Abstract: The present application discloses a converter system, a driving circuit and a driving method for a semiconductor switch. The driving circuit includes a driving unit, a sampling unit and a selection unit. A plurality of turn-off driving units with different turn-off parameters is provided in the driving unit, and a turn-off driving unit having a turn-off parameter adaptive to the working state of the semiconductor switch is selected according to the working state of the semiconductor switch so as to turn off the semiconductor switch.

Abstract: A current path of a first transistor is connected in series to a communication line. When the electric current through the current path of the first transistor becomes equal to or greater than a set electric current, a current-limiting controller limits the electric current through the current path by controlling the first transistor to increase the resistance of the current path. When the end-to-end voltage of the current path of the first transistor becomes equal to or greater than a set voltage, a load limiter switches the first transistor off.

Abstract: Disclosed is a control line diagnostic apparatus for diagnosing a control line of a driver circuit in which a driven load is driven due to a current flowing through the control line from a first high-potential node to a first low-potential node when a driving switch having a higher potential than a potential of the driven load is turned on, the control line diagnostic apparatus including a first diagnostic line having an end connected to a first node provided on the control line and the other end connected to a second high-potential node, and including a first resistor, a second resistor, and a first diode connected to one another in series, a second diagnostic line having an end connected to the first node and the other end connected to a second low-potential node, and including a third resistor, a voltage measurement unit configured to measure a voltage of a second node provided between the first and second resistors, and a control unit configured to set predetermined operation modes by controlling the driv

Abstract: A voltage regulator for delivering power to a processor subsystem within an information handling system is disclosed. The voltage regulator includes an interface to an embedded controller for receiving a linear load line impedance and an intelligent load line controller. The intelligent load line controller may enable linear load line control, determine that a nonlinear load line condition is satisfied, and enable nonlinear load line control based on the determination that the nonlinear load line condition is satisfied.

Abstract: Disclosed are a vehicle motor drive circuit and a driving method thereof. In the vehicle motor drive circuit according to the present invention, when the floating voltage is generated on the digital ground line due to a short circuit or a poor contact, the switch control signal is connected to the motor ground power supply to lower the signal level of the switch control signal in response to the voltage difference produced between the digital ground line and the motor ground line. Therefore, it is possible to prevent an erroneous operation of the motor switch or the motor. Accordingly, it is possible to prevent a damage of the motor or the motor switch and a secondary problem caused by unintentional operation of the motor.

Abstract: A rectifier diode failure detection apparatus for an electrical machine (10), the electrical machine (10) comprising an exciter armature winding (28a-c), a rotor main field winding (24) and first and second rectifiers (34a, 34b) arranged in parallel, each rectifier (34a, 34b) comprising at least first and second diodes (38a, 38b), each rectifier being configured to independently supply the rotor main field winding (24) with DC electrical current, the failure detection apparatus comprising: a controller (40) comprising at least two current sensors (42a, 42b), each current sensor (42a, 42b) being configured to measure output current (If1, If2) of a respective one of the rectifiers (34a, 34b), and the controller (40) being configured to determine a harmonic of the measured rectifier output currents; the controller (40) being further configured to determine a ratio of the magnitude of the first rectifier (34a) output current harmonic to the magnitude of the second rectifier (34b) output current harmonic, wherein

Abstract: Embodiments of the invention relate to electrostatic discharge (ESD) protection. One embodiment includes creating a window for multiple leads in a first plane on a cable. A common bus bar is attached adjacent to the window in a second plane on the cable. A first dissipative adhesive (DA) is applied across at least a portion of the multiple leads to connect the multiple leads to one another and to the common bus bar. At least some leads of the multiple leads are operatively connected to an element of an electronic device.

Abstract: A DC/DC converter has: a soft-start circuit, a variable output current generator, a constant current source, an oscillator, a slope circuit, a PWM comparator, and a control circuit operable to turn ON and OFF first and second transistors alternately based on a pulse width modulation signal. Through the switching operation of the first and second transistors, an input voltage is converted into a output voltage.

Abstract: A power supply unit (PSU) mismatch detection system that includes a plurality of PSU slots configured to couple to a PSU and transmit power to an auxiliary power rail (APR) and a main power rail (MPR), a controller that is coupled to the MPR and the PSU slots and configured to perform a PSU mismatch check on each PSU coupled to the PSU slots, and a programmable logic device (PLD) that is coupled to the APR, the MPR, and each of the plurality of PSU slots. The PLD enables transmission of power to the MPR from a first PSU coupled to a first PSU slot, receives an indication that the controller has completed the PSU mismatch check, determines valid PSU slots using the results of the PSU mismatch check, and enables the transmission of power to the main power rail from the valid PSUs slots.

Abstract: Some embodiments provide irrigation controllers, comprising: a transformer configured to step down a voltage producing an AC power signal; a live AC line and an AC common line coupled with the transformer; a plurality of AC switches coupled with the live AC line and configured to selectively pass the AC power signal to one or more valve solenoids such that the one or more valve solenoids are effectively coupled across the live AC line and the AC common line; an impedance element coupled serially on the AC common line with the transformer, wherein the impedance element comprises an inductive reactance and a resistive component, and the impedance element is configured to increase overvoltage protection between the transformer and the plurality of AC switches increasing an effective voltage tolerance to the overvoltage conditions at the AC switches; and a controller configured to selectively control the plurality of AC switches.

Abstract: An example device in accordance with an aspect of the present disclosure includes a first converter to selectively convert a first input signal to a first output signal, and a second converter to selectively convert a second input signal to a second output signal. A controller is to control switches of the first and second converters based on the input signals and output signals, and based on operating the first and second converters exclusively with respect to each other such that a total of first and second duty cycles does not exceed one.

Abstract: There is provided a DC-DC converter which is safe and secure, but yet with low power consumption. The DC-DC converter is configured to monitor the output voltage of an error amplifier, and detect that the output voltage of the error amplifier becomes a fixed value or smaller to drive an overheat protection circuit and a supply voltage monitoring circuit intermittently.

Abstract: A manual is disclosed for a frequency converter and a method, apparatus and a computer program product are disclosed for configuring a frequency converter. The manual can include a data storage storing operational configuration information of the frequency converter; wherein the configuration information is encoded to the data storage to be wirelessly readable from the data storage. The configuration information is obtained from the manual by wireless reading, and installed to the frequency converter by transmitting the obtained configuration information over a wireless connection.

Abstract: An overcurrent protection circuit includes a voltage monitoring part configured to monitor an output voltage generated from a periodic switching operation of a switching output stage or a feedback voltage corresponding to the output voltage, a current monitoring part configured to monitor whether a current flowing through the switching output stage is under an overcurrent condition, and a protection operation part configured to perform an overcurrent protection operation in response to monitoring results of both the voltage monitoring part and the current monitoring part.

Abstract: Systems and methods are provided for reliable redundant power distribution. Some embodiments include micro Automatic Transfer Switches (micro-ATSs), including various components and techniques for facilitating reliable auto-switching functionality in a small footprint (e.g., less than ten cubic inches, with at least one dimension being less than a standard NEMA rack height). Other embodiments include systems and techniques for integrating a number of micro-ATSs into a parallel auto-switching module for redundant power delivery to a number of devices. Implementations of the parallel auto-switching module are configured to be mounted in, on top of, or on the side of standard equipment racks. Still other embodiments provide power distribution topologies that exploit functionality of the micro-ATSs and/or the parallel micro-ATS modules.

Abstract: In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby preventing the short circuit from being falsely detected in the event that the short circuit and the welding of the relay can both be detected. A device for detecting welding of a relay detects welding of a relay provided to a path via which a cell is charged by an external power supply. Welding of a power-supply-side relay or a ground-side relay is detected on the basis of a current flowing disproportionately more toward the external power supply than the power-supply-side relay or ground-side relay when a control unit has deactivated the power-supply-side relay or ground-side relay during an interrupting in charging. A disconnecting switch establishes or disestablishes the connection between the external power supply and a weld-detection switch.

Abstract: A non-contact type power receiving apparatus, of which a voltage level of output power varies depending on a rated voltage of a battery, includes: a power receiving coil unit receiving a power in a non-contact scheme; a rectifying/multiplying unit rectifying the received power depending on controlling thereof and selectively multiplying a voltage level of the rectified power; and a controller selectively controlling a rectifying operation or a multiplying operation of the rectifying/multiplying unit to be performed depending on a selection signal.

Abstract: A method for detecting a short circuit fault in a multi-level inverter circuit is provided. The multi-level inverter circuit includes a plurality of single phase branches each including of switches. The method includes steps outlined below. At least one detecting pulse sequence is transmitted to the switches of each of the single phase branches. Whether a conducting path is formed in any of the single phase branches is determined according to the detecting pulse sequence. When the conducting loop is formed, respective position of one or more malfunctioned switch in the single phase branches is located according to a path of the conducting loop. A short-circuit detection device and a three-phase three-level inverter circuit are also disclosed herein.

Abstract: A device and method for detecting faults in a shield of an electrosurgical instrument is described. The device has a relay configured to selectively interrupt power to the electrosurgical instrument, monitoring circuitry configured to monitor a shield in the electrosurgical instrument, control circuitry to control the relay, and a battery power source. The monitoring circuitry has an envelope detector and an detected average shield current detector. The monitoring circuitry is configured to compare a shield current peak value to a shield current peak threshold value, and to compare an detected average shield current value to an detected average shield current threshold value. The device is further configured to operatively couple an active electrode of an electrosurgical instrument and a return electrode to an electrosurgical generator.

Abstract: A system for enhancing tonal quality for ringback signals in a telecommunications network by adjusting audio processing during an alerting interval of a telecommunications session (e.g. during a telephone call). The system may be embodied in a telecommunications switching device and include a ringback manager process that provides the ability to adjust audio processing (e.g., by signaling to in-path equipment) which enhances the tonal quality of the ringback signal. As an example, a telephone system (e.g. equipment associated with establishment and operation of telephone communications sessions) can disable or attenuate operation of voice quality enhancement processing such as echo cancellation, noise reduction, adaptive level control, and the like, during the ringback or alerting interval or period of a telephone call so that the ringback tone provided to the calling party is not distorted by such processing.

Abstract: A solar power generation system having a backup inverter, the solar power generation system has N number of solar panels, N number of inverters, at least one backup inverter and at least one AC (Alternating Current) wiring box; each inverter and the backup inverter are parallel connected to the AC wiring box; the AC wiring box can be connected to a utility grid; when each inverter is normally operated, each solar panel can supply power to each inverter; when the X-th inverter is faulted, the X-th solar panel can supply power to the backup inverter, therefore reduce the interruption time of power generation.

Abstract: A switched-mode power supply system and method for converting an input voltage into an output voltage, including at least one switching stage controlled by a pulse-width modulation circuit in a clocked manner, and a control circuit that influences a pulse-width modulation circuit to vary the level of the output voltage, characterized by the provision of a current limiting circuit which, after a threshold voltage has been exceeded, limits the power supply output current first to an elevated maximum current for a first period of time, and thereafter to a regular maximum current. The control circuit is such that the first period of time for which the output current is limited to the elevated maximum current is dependent on the level of the output current.

Abstract: A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor RS. The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.

Abstract: A control circuit of the present disclosure can directly coupled with AC power grid to control and adjust an LED lamp. The control circuit includes a protection unit, an anti-interference unit, an adjusting unit, an auxiliary control unit, a light emitting module, a low-flicker control unit, an ESD protection unit, an output unit and a plurality of IC unit. the adjusting unit adjusts and control a luminance of the light emitting module, the auxiliary control unit assistants to adjust the luminance of the light emitting module and increase a compatibility between the adjusting unit and the IC unit.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a power system comprising a plurality of voltage regulator phases, wherein at least one of the plurality of voltage regulator phases comprises an allocable voltage regulator phase that is configured to be selectively allocated to one of at least a first voltage rail and a second voltage rail of the information handling system based on a hardware configuration of the information handling system.

Abstract: A motor drive device includes: a drive circuit unit having a plurality pair of switching elements and a plurality pair of free wheel diodes connected in parallel to the plurality pair of switching elements respectively; and a controller that turns on/off the switching elements. The controller performs a synchronous rectification control in which at least one pair of the switching elements is complementarily turned on/off, or performs an asynchronous rectification control in which the synchronous rectification control is not performed. The controller has a variation restriction portion that restricts a variation in current that is caused by a switch from one of the synchronous rectification control and the asynchronous rectification control to the other.

Abstract: A power supply system includes a load, a power line, first and second DC power supplies, a power converter, and a controller for controlling the power converter. Upon selection of an operation mode in which the first and second DC power supplies are parallelly connected to the power line for providing the power line with an output from the first DC power supply after DC voltage conversion in the power converter and with an output from the second DC power supply without DC voltage conversion, the controller sets the maximum value of the total power output from the first and second DC power supplies to the power line at the sum of actual power of the first DC power supply and a charge limiting value for the second DC power supply.

Abstract: Devices and methods comprising a switch and an overload detection are disclosed. When an overload detection is detected, a first retry scheme followed by a second retry scheme different from the first retry scheme may be applied. If the overload condition persists, the switch may be disabled.

Abstract: In activating a motor, a gate voltage with which a power semiconductor element may supply a rush current of the motor is generated by a charge pump circuit, when a certain time (time until the rush current ends) has elapsed after activating the motor, a timer circuit operates a gate clamp circuit, which reduces the gate voltage of the power semiconductor element to reduce the current-carrying capability of the power semiconductor element. Subsequently, when the motor has caused a short-circuit failure, the power semiconductor element, because its gate voltage is reduced by the gate clamp circuit in advance, supplies only a load short current corresponding to the reduced gate voltage. Accordingly, the heat generation due to the short-circuit current is also small and an increase in temperature is also suppressed.

Abstract: A regulator for providing a load current at a regulator output voltage to a load at an output of the regulator is described. The regulator has a differential input stage to provide a differential output voltage based on a reference voltage and based on the regulator output voltage. Furthermore, the regulator has an output driver to generate a control signal based on the differential output voltage. In addition, the regulator has a pass transistor to provide the load current in dependence of the control signal. The regulator also has clamping circuitry to sense an overvoltage indication which indicates that the pass transistor is being turned off. Furthermore, the clamping circuitry clamps the differential output voltage to a clamping voltage, if the overvoltage indication indicates that the pass transistor is being turned off.

Abstract: An angle adjustment mechanism for LED bar lighting includes a lamp body, two end covers arranged two ends of the lamp body along an axial direction thereof, two lamp frames respectively mounted on the two threading pipes, two wheel gears respectively fixed on the two lamp frames, two outer end caps fixed and covered on the two end covers, respectively, and at least two stopping plates respectively received in the two lamp frames. Each of the two end covers includes a threading pipe extending along the axial direction of the lamp body. Each of the two wheel gears includes a plurality of gear teeth taken along a radial direction thereof and rotating around the threading pipe. Each of the stopping plates provides at least one stopping tooth which is coupling to the gear teeth.

Abstract: A circuit breaker includes a set of separable contacts moveable between a closed position and an open position, an operating mechanism configured to open the set of contacts, a conductor coupled to the set of contacts, a current transformer coupled to the conductor, and a trip circuit coupled to the operating mechanism and to the current transformer and configured to cause the operating mechanism to open the set of contacts when a current through the conductor exceeds a current threshold that is greater than a saturation threshold of the current transformer. The trip circuit is further configured to vary the current threshold during an interval following a closure of the set of the contacts and to provide a fixed current threshold thereafter.

Abstract: A memory load sharing system and method therefor. This system can include a platform VRM (Voltage Regulator Module) coupled to a memory channel with the platform VRM having a platform voltage input. One or more first memory modules can coupled to the platform VRM through the memory channel. Each of the first memory modules includes one or more plane connectors and a module connector, as well as a memory module VRM coupled to a module load sharing diode that is coupled to the one or more plane connectors of that first memory module. The platform VRM is coupled to a first platform load sharing diode that is coupled the plane connectors of each of the first memory modules. This platform is configured to support load sharing between the first memory modules and to provide a predetermined amount of power to each of the memory modules.

Abstract: An exemplary inductive power transfer system having a transmitter coil and a receiver coil. A transmitter-side power converter having a mains rectifier stage powering a transmitter-side dc-bus and controlling a transmitter-side dc-bus voltage U1,dc. A transmitter-side inverter stage with a switching frequency fsw supplies the transmitter coil with an alternating current. A receiver-side power converter having a receiver-side rectifier stage that rectifies a voltage induced in the receiver coil and powering a receiver-side dc-bus and a receiver-side charging converter controlling a receiver-side dc-bus voltage U2,dc. Power controllers that determine from a power transfer efficiency of the power transfer, reference values U1,dc*, U2,dc* for the transmitter and receiver side dc-bus voltages. An inverter stage switching controller controls the switching frequency fsw to reduce losses in the transmitter-side inverter stage.

Abstract: An automatic gain control (AGC) circuit and method are provided herein to control the gain, and the gain step size, of an amplifier circuit based on a duration of a detected overload condition. According to one embodiment, a method of gain control may include comparing a received signal to a threshold value, detecting an overload condition if the received signal exceeds the threshold value, detecting a duration of the overload condition, and controlling the gain, and the gain step size, of the amplifier circuit based on the detected duration of the overload condition.

Abstract: System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal. The second threshold signal is different from the first threshold signal in magnitude. Moreover, the system includes a first detection component configured to receive at least the second comparison signal, detect the second comparison signal only if one or more predetermined conditions are satisfied, and generate a first detection signal based on at least information associated with the detected second comparison signal.

Abstract: A power supply for supplying power to a chipset includes a first voltage regulating circuit, which is configured to convert an applied power supply signal into a group of first supply voltages, and a second voltage regulating circuit, which is configured to convert the applied power supply signal into a group of second supply voltages. A control circuit is provided, which is configured to selectively enable the second voltage regulating circuit to generate the group of second supply voltages. An output discharge circuit is provided, which is configured to discharge an output stage of the first voltage regulating circuit in response to a transition of the first voltage regulating circuit from an active state to an inactive state. This transition of the first voltage regulating circuit from an active state to an inactive state can occur in response to a change in magnitude of the power supply signal.

Abstract: Apparatus and methods for boost regulators with dynamic regulation band are disclosed. In certain configurations, a boost regulator system includes a boost regulator, a current source, and a light emitting element, such as a flash LED, that is controlled using a current generated by the current source. The boost regulator generates an output voltage that is used to power the current source. The boost regulator operates with a regulation band that changes based on a current level of the light emitting element.

Abstract: An apparatus for protecting a grid-connected inverter from a low grid voltage includes a first output current sensor configured to sense an output current of a grid-connected inverter, a first output current calculator configured to calculate a D-axis current and a Q-axis current of the output current to obtain the output current that is sensed, and a first output current controller configured to determine whether a difference between the output current and a reference current exceeds a predetermined range, and to decrease the output current by a predetermined value when the difference between the output current and the reference current exceeds the predetermined range.

Abstract: An IGBT provided on the high voltage side uses the sensing function of the IGBT to detect a current and prevents the IGBT from breaking due to an overcurrent through a gate drive unit when the current detected by the short-circuit protection unit is determined to be an overcurrent. When detecting an overcurrent, the short-circuit protection unit outputs an alarm signal to a composition unit. Also, it detects the temperature of the power semiconductor module by using a temperature detection element, converts the detected temperature into a digital signal in the temperature information generating unit, and outputs the digitized temperature information to the composition unit. The composition unit composites the temperature information and the alarm signal and one resultant composite output is transmitted to a control unit on the low voltage side.

Abstract: A voltage source converter (30) comprises a converter limb (36), having primary and secondary limbs connected in parallel between first and second DC terminals (32,34), the primary limb element including first and second primary limb element portions (38,40) separated by a third terminal (42), being connectable to an AC electrical network (46), each primary limb element portion (38,40) including at least one primary switching element (50), the secondary limb including first and second secondary limb element portions (52,54) separated by a junction (56), and including a DC side chain-link converter (58), and a connection interconnecting the third terminal (42) and the junction (56) wherein the voltage source converter (30) further includes a control unit (62) controlling the switching of the respective switching elements.

Abstract: A method for discharging a high-voltage system in a vehicle, the high-voltage system having at least one energy store and a plurality of high-voltage consumers. To discharge the high-voltage system, the electrical energy store is first separated from the rest of the vehicle electrical system, and at least one of the high-voltage consumers is switched on, so that the charge stored within the system drains via the consumers.

Abstract: A load associated with one or more components coupled via one or more ports to a first power supply rail is monitored. The one or more components are switched to a second power supply rail, if the load is greater than a predetermined load.

Abstract: Technologies for detecting a fault location in a DC electrical distribution system include a bus protection unit that monitors a DC electrical bus. The bus protection unit includes at least one sensor to produce sensor data indicative of one or more characteristics of the DC electrical bus monitored by the bus protection unit. The bus protection unit monitors the sensor data, determines whether a fault has occurred based on the sensor data, and determines whether the fault occurred within a bus zone defined by the DC electrical bus in response to determining that the fault has occurred. Further, the bus detection unit trips isolation devices within the bus zone in response to a determination that the fault occurred within the bus zone or a communication from another bus protection unit indicating the fault has occurred within the bus zone. The bus protection unit transmits a bus fault indication signal to another bus protection unit in response to a determination that the fault has occurred.

Abstract: An improved intrinsic safety barrier arrangement for an electrical device or component. A method of intrinsic safety barrier operation for an electrical device or component is also disclosed.

Abstract: A voltage clamp circuit which operates using a voltage controlled current source where the change of the polarity of the voltage controlled current source controls whether it is clamping or not. While clamping, the stability of the control loop uses the capacitance of the output to create and single pole roll-off of the loop gain and while not clamping, uses the capacitance of the circuit which sets the clamping voltage to produce the roll-off. The circuit operates in a linear fashion both while clamping and not clamping, which allows for a faster response when clamping is needed.

Abstract: A voltage-adjusting device is provided for adjusting voltages of one or more power domains in a chip. The device includes a distributing system, and a voltage-adjusting system. The distributing system obtains task information for the one or more power domains, obtains a forecasted voltage and a detected voltage for a power domain, and obtains a control system for the power domain for controlling a voltage applied on the power domain based on the forecasted voltage and the detected voltage. The forecasted voltage is a voltage required for the power domain to execute a task. Further, the voltage-adjusting system is connected to the distributing system and the one or more power domains, adjusts the voltage applied on the power domain based on the control signal such that the detected voltage reaches the forecasted voltage when the power domain executes a task.

Abstract: An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at least one switching device coupled with the power source. The motor includes a plurality of windings. The motor is coupled with the driving circuit and driven by the driving circuit. The controller is configured to provide first switch signals to the at least one switching device of the driving circuit in a normal mode. The protection circuit is coupled with the controller, and configured to generate second switch signals based at least in part on a fault signal in a fault mode and provide the second switch signals to the at least one switching device of the driving circuit so as to reconstruct circuit loops between the driving circuit and the plurality of windings. A method for operating the motor driving system is also described.

Abstract: A power conversion device located between an AC power source and a load includes: a rectifier circuit unit that rectifies a voltage of the AC power source; a smoothing unit that smooths a DC voltage on the load side of the rectifier circuit unit; a short-circuiting unit that short-circuits the AC power source; a step-up reactor—located on the AC power source side of the short-circuiting unit; at least one of a reactor current detecting unit—that detects the current of the step-up reactor and a bus voltage detecting unit that detects an output voltage of the smoothing unit; a counterflow preventing element that prevents a counterflow of the current from the smoothing unit to the AC power source; a switching control unit that outputs a control signal for the short-circuiting unit; and a switching frequency changing unit that changes a frequency of the control signal using a logic operation.

Abstract: A peak current protection circuit includes a current sensing circuit configured to sense an operating current of a DC-DC converter, and an over-current detector operably coupled with the current sensing circuit. The over-current detector is configured to generate an over-current detect signal at a peak current limit that is that is independent of a voltage level of an output signal of the DC-DC converter. A method for providing over-current protection for a DC-DC converter includes sensing an operating current of a DC-DC converter at a first input of a comparator, sensing a reference current at a second input of the comparator, comparing the first input with the second input, and generating an over-current detect signal in response to the comparison such that a peak current limit for the DC-DC converter is independent of a voltage level of an output signal of the DC-DC converter.