Abstract: An apparatus includes a voltage detection module and a sense resistor configured to couple a low-voltage domain of the voltage detection module to a high-voltage node of an external circuit and to develop a sense current based on a voltage developed at the high-voltage node, the sense current being received at a sensing node of the voltage detection module. The voltage detection module includes a reference network configured to establish one or more threshold conditions at respective internal nodes within the voltage detection module, the one or more threshold conditions being generated based on one or more biasing circuits, and a comparison network configured to generate one or more comparison output signals based on a received current level of the sense current and the one or more threshold conditions.

Abstract: A multi-port charger allocates a total allocated power to power delivery modules to provide power to respective sink devices at less than or equal to a total rated power capacity of the multi-port charger. Under predetermined conditions, a subsequent power allocation provided to a sink device is allowed to result in the total allocated power of the multi-port charger being greater than the total rated power capacity of the multi-port charger. After the total allocated power has been higher than the total rated power capacity for longer than a timeout time period, the total allocated power is reset to be less than or equal to the total rated power capacity of the multi-port charger.

Abstract: A pulsed laser diode driver includes an inductor having a first terminal configured to receive a first source voltage provided by a source capacitor. A bypass switch has a drain node connected to a second terminal of the inductor. A laser diode has an anode connected to the second terminal of the inductor and a cathode connected to a drain node of a pulse emission switch. The pulse emission switch and the bypass switch are configured to control a current flow through the inductor to emit a high-current pulse through the laser diode to thereby emit a light pulse corresponding to a peak current of a resonant waveform developed at the anode of the laser diode. The bypass switch is enabled during emission of the high-current pulse to modify a falling edge of the high-current pulse.

Abstract: A pulsed laser diode driver includes a source capacitor having a first terminal connected to a respective first terminal of two or more inductors and a second terminal coupled to ground. First and second bypass switches each have a respective drain node connected to a respective second terminal of first and second inductors of the two or more inductors and a respective source node connected to ground. First and second laser diodes each have a respective anode connected to the respective second terminal of the first and second inductors. The bypass switches are configured to control a current flow through the first and second inductors to produce high-current pulses through the laser diodes, each high-current pulse corresponding to a peak current of a resonant waveform developed at the anode of the respective laser diode.

Abstract: A power converter includes an AC/DC converter to generate a DC output voltage based on an AC input voltage. A multi-port DC output circuit receives the DC output voltage and provides respective DC output voltages to a first DC output port and a second DC output port. The multi-port DC output circuit includes a first intermediate rail voltage switch, a second intermediate rail voltage switch, and multiple bus switches, a body diode of the first intermediate rail voltage switch being forward biased with respect to the first secondary side output voltage, and a body diode of the second intermediate rail voltage switch being reverse biased with respect to the first secondary side output voltage. The bus switches control a routing of a first intermediate rail voltage and a second intermediate rail voltage of the multi-port DC output circuit to the first DC output port and the second DC output port.

Abstract: A transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: A transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: A power transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: A power transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: A power transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: A power transistor is switched on and off with an on-time that is held constant and an off-time that is varied. When the off-time is detected to be less than a threshold value that is greater than a minimum off-time limit, the on-time is extended. Then the power transistor is switched on and off with the extended on-time that is held constant and the off-time that varies.

Abstract: An apparatus and method for virtual current sensing in a DC-DC switched mode power supply. In a fixed frequency implementation, when a switching phase begins, the phase node goes high when the high-side switching transistor is turned on. At this point, a first programmable current source begins charging a current sensing capacitor and the voltage across the capacitor simulates the rising slope of the voltage across a conventional current sensing resistor. Simultaneously, a ramp capacitor beginning at a reference voltage is charged by a second programmable current source. When the sum of the voltages across the two capacitors exceeds an error voltage, the phase node goes low when the drive signal to the transistor is turned off. At this point, a third programmable current source begins discharging the current sensing capacitor and the voltage across the capacitor simulates the falling slope of the current across the conventional resistor.