Abstract: A circuit for controlling a high-side power switch includes a level shifting circuit configured to receive an input signal for selectively configuring a logic command circuit to be in a set state, for providing a first output signal to the high-side power switch, and in a reset state, for providing a second output signal, different from the first output signal, to the high-side power switch. The circuit also includes a regulation circuit configured to detect an indicative signal indicative of the output signal provided to the high-side power switch and to change sensitivity of the level shifting circuit to the input signal, based on the indicative signal that is detected.

Abstract: A circuit for controlling a high-side power switch includes a level shifting circuit including a latching circuit. The level shifting circuit is configured to receive a control signal for selectively configuring the latching circuit to be in a set state, for providing a first output signal to the high-side power switch, and in a reset state, for providing a second output signal, different from the first output signal, to the high-side power switch.

Abstract: A bootstrap diode emulator circuit having a cathode and an anode includes a transistor device and a diodic device. The transistor device is arranged at the cathode of the bootstrap diode emulator circuit. The diodic device has a cathode connected to the transistor device and an anode that is the anode of the bootstrap diode emulator circuit.

Abstract: The present disclosure provides a pulse filtering circuit with two input ports and two output ports, including: a first signal path with a first buffer unit, a first comparison unit, and a first shaping unit; and a second signal path with a second buffer unit, a second comparison unit, and a second shaping unit; each of the first comparison unit and the second comparison unit has four ports, which are a first port, a second port, a third port and a fourth port; the first port of each comparison unit serves as an input control port, the second port of each comparison unit serves as an output port, the third port serves as a fixed potential port, and the fourth port serves as a floating potential input port.

Abstract: The present disclosure provides a pulse filtering circuit with two input ports and two output ports, including: a first signal path with a first buffer unit, a first comparison unit, and a first shaping unit; and a second signal path with a second buffer unit, a second comparison unit, and a second shaping unit; each of the first comparison unit and the second comparison unit has four ports, which are a first port, a second port, a third port and a fourth port; the first port of each comparison unit serves as an input control port, the second port of each comparison unit serves as an output port, the third port serves as a fixed potential port, and the fourth port serves as a floating potential input port.

Abstract: A pulse width filtering circuit for filtering pulse signals includes an input transition detection circuit detecting change of state of an input signal, including a first transition from a low signal to a high signal and a second transition from the high signal to the low signal; a first delay circuit determining whether the high signal from the first transition is maintained longer than a first period and, if so, generating a first output indicative of the first transition, after the first period; a second delay circuit determining whether the low signal from the second transition is maintained for longer than a second period and, if so, generating a second output indicative of the second transition, after the second period; and a switching circuit connected to the first and second delay circuits and selectively outputting the first output and the second output, based on the state of the input signal.

Abstract: A direct drive LED lighting circuit includes a LED current control circuit with a power switching device; a current sensing device, an averaging circuit, and an error amplifier. A LED chain circuit is formed by connecting several LEDs in series with a capacitor connecting in parallel with the series of LEDs, with a current flowing in side as a positive terminal, and a current leaving terminal as a negative terminal. The LED chain circuit and the LED current control circuit are connecting in series and the whole circuit is connected between the positive and negative terminals of a rectified AC power source.

Abstract: A bootstrap diode emulator circuit having a cathode and an anode includes a transistor device and a diodic device. The transistor device is arranged at the cathode of the bootstrap diode emulator circuit. The diodic device has a cathode connected to the transistor device and an anode that is the anode of the bootstrap diode emulator circuit.

Abstract: A voltage clamping circuit for a driver arranged to drive a half bridge circuit connected to an inductive load. The circuit includes a detector arranged to detect magnitude of a voltage at a switched node connected to the inductive load and to provide an input signal indicative of the magnitude of the voltage at the switched node; and a comparator arranged to receive and compare the input signal to a reference signal representing a reference voltage value, for selectively controlling operation of a switching device to clamp the voltage at the switched node thereby reducing the magnitude of the voltage at the switched node.

Abstract: A pulse width filtering circuit for filtering pulse signals includes an input transition detection circuit detecting change of state of an input signal, including a first transition from a low signal to a high signal and a second transition from the high signal to the low signal; a first delay circuit determining whether the high signal from the first transition is maintained longer than a first period and, if so, generating a first output indicative of the first transition, after the first period; a second delay circuit determining whether the low signal from the second transition is maintained for longer than a second period and, if so, generating a second output indicative of the second transition, after the second period; and a switching circuit connected to the first and second delay circuits and selectively outputting the first output and the second output, based on the state of the input signal.

Abstract: A circuit for controlling a high-side power switch includes a level shifting circuit including a latching circuit. The level shifting circuit is configured to receive a control signal for selectively configuring the latching circuit to be in a set state, for providing a first output signal to the high-side power switch, and in a reset state, for providing a second output signal, different from the first output signal, to the high-side power switch.

Abstract: A circuit for controlling a high-side power switch includes a level shifting circuit configured to receive an input signal for selectively configuring a logic command circuit to be in a set state, for providing a first output signal to the high-side power switch, and in a reset state, for providing a second output signal, different from the first output signal, to the high-side power switch. The circuit also includes a regulation circuit configured to detect an indicative signal indicative of the output signal provided to the high-side power switch and to change sensitivity of the level shifting circuit to the input signal, based on the indicative signal that is detected.

Abstract: A three terminal high voltage Darlington bipolar transistor power switching device includes two high voltage bipolar transistors, with collectors connected together serving as the collector terminal. The base of the first high voltage bipolar transistor serves as the base terminal. The emitter of the first high voltage bipolar transistor connects to the base of the second high voltage bipolar transistor (inner base), and the emitter of the second high voltage bipolar transistor serves as the emitter terminal. A diode has its anode connected to the inner base (emitter of the first high voltage bipolar transistor, or base of the second high voltage bipolar transistor), and its cathode connected to the base terminal. Similarly, a three terminal hybrid MOSFET/bipolar high voltage switching device can be formed by replacing the first high voltage bipolar transistor of the previous switching device by a high voltage MOSFET.

Abstract: A direct drive LED lighting circuit includes a LED current control circuit with a power switching device; a current sensing device, an averaging circuit, and an error amplifier. A LED chain circuit is formed by connecting several LEDs in series with a capacitor connecting in parallel with the series of LEDs, with a current flowing in side as a positive terminal, and a current leaving terminal as a negative terminal. The LED chain circuit and the LED current control circuit are connecting in series and the whole circuit is connected between the positive and negative terminals of a rectified AC power source.

Abstract: A three terminal high voltage Darlington bipolar transistor power switching device includes two high voltage bipolar transistors, with collectors connected together serving as the collector terminal. The base of the first high voltage bipolar transistor serves as the base terminal. The emitter of the first high voltage bipolar transistor connects to the base of the second high voltage bipolar transistor (inner base), and the emitter of the second high voltage bipolar transistor serves as the emitter terminal. A diode has its anode connected to the inner base (emitter of the first high voltage bipolar transistor, or base of the second high voltage bipolar transistor), and its cathode connected to the base terminal. Similarly, a three terminal hybrid MOSFET/bipolar high voltage switching device can be formed by replacing the first high voltage bipolar transistor of the previous switching device by a high voltage MOSFET.

Abstract: A three terminal high voltage Darlington bipolar transistor power switching device includes two high voltage bipolar transistors, with collectors connected together serving as the collector terminal. The base of the first high voltage bipolar transistor serves as the base terminal. The emitter of the first high voltage bipolar transistor connects to the base of the second high voltage bipolar transistor (inner base), and the emitter of the second high voltage bipolar transistor serves as the emitter terminal. A diode has its anode connected to the inner base (emitter of the first high voltage bipolar transistor, or base of the second high voltage bipolar transistor), and its cathode connected to the base terminal. Similarly, a three terminal hybrid MOSFET/bipolar high voltage switching device can be formed by replacing the first high voltage bipolar transistor of the previous switching device by a high voltage MOSFET.

Abstract: A three terminal high voltage Darlington bipolar transistor power switching device includes two high voltage bipolar transistors, with collectors connected together serving as the collector terminal. The base of the first high voltage bipolar transistor serves as the base terminal. The emitter of the first high voltage bipolar transistor connects to the base of the second high voltage bipolar transistor (inner base), and the emitter of the second high voltage bipolar transistor serves as the emitter terminal. A diode has its anode connected to the inner base (emitter of the first high voltage bipolar transistor, or base of the second high voltage bipolar transistor), and its cathode connected to the base terminal. Similarly, a three terminal hybrid MOSFET/bipolar high voltage switching device can be formed by replacing the first high voltage bipolar transistor of the previous switching device by a high voltage MOSFET.

Abstract: A switching converter IC without a built-in power switching device includes a first terminal serving as a power supply positive connection, a second terminal serving as a power supply return connection, a third terminal serving as the switch-driving connection for controlling the switching duty of an external bipolar or MOSFET power switching device and also serving as a conduit for detection of current drawn by the power switching device to thereby provide overcurrent protection. Feedback information is derived from voltage between the first and the second terminals.

Abstract: A switching converter circuit includes bipolar devices in a Darlington configuration as a main switching element. Current drive is provided to the first base terminal to turn on the Darlington bipolar device. Base relaxation circuits to both the first and inner base terminals turn off the Darlington bipolar device.

Abstract: A switching converter IC without a built-in power switching device includes a first terminal serving as a power supply positive connection, a second terminal serving as a power supply return connection, a third terminal serving as the switch-driving connection for controlling the switching duty of an external bipolar or MOSFET power switching device and also serving as a conduit for detection of current drawn by the power switching device to thereby provide overcurrent protection. Feedback information is derived from voltage between the first and the second terminals.