Abstract: An improved CMBB regulator includes a current amplifier circuit that allows both load transient performance and noise immunity to be optimized simultaneously. The current amplifier circuit measures a voltage drop across a sense resistor to determine a power driver output current. The current amplifier circuit separates AC and DC current information and applies separate gain factors to the AC and DC current information. AC and DC current information modified by the gain factors is then recombined and used to pass current through an output resistor. A current amplifier output voltage is input to a comparator circuit that provides an output that indicates whether the current amplifier output voltage is above, equal to, or below a desired voltage level. The comparator output is then used to provide feedback control to a power driver circuit.

Abstract: A current controller for a device is provided. The current controller includes power and ground inputs for connecting to a source of energization, and power and ground outputs for connecting to the device. A variable impedance is coupled in series between the power input and the power output and has an impedance control input. The impedance control input controls the variable impedance between a high impedance, OFF state and a low impedance, ON state. An impedance control circuit is coupled to the impedance control input, which biases the variable impedance in the high impedance, OFF state when at least one of the following conditions occur: the resistance between the power and ground outputs is less than a threshold resistance, and current drawn by the current controller through the power input exceeds a threshold current level.

Abstract: An apparatus and method for controlling a power supply which is coupled to an integrated circuit (IC) that is subject to latch-up is provided. The apparatus includes a comparator circuit that compares a voltage across the IC with a threshold and provides a comparator output. A restart circuit that receives the comparator output, and that receives a fault status signal from the power supply is also included. The restart circuit initiates a restart by shutting off the power supply if the fault status signal is indicative of a latch-up condition in the IC. The restart circuit turns on the power supply if the comparator output indicates that the voltage across the IC is below the threshold.

Abstract: An inrush current controller for a device has a connector for hot-plugging the device into a source of energization. An impedance has a current input coupled to a first contact of the connector and a current output coupled to the device. The impedance has an impedance control input. An impedance control circuit has a logic input coupling to a second contact of the connector. The impedance control circuit has an impedance control output connected to the impedance control input. The impedance control output forces the impedance OFF during a first time interval after hot-plugging. The logic input triggers a limited inrush at the current input after the first time interval.

Abstract: A current controller for a device is provided. The current controller includes power and ground inputs for connecting to a source of energization, and power and ground outputs for connecting to the device. A variable impedance is coupled in series between the power input and the power output and has an impedance control input. The impedance control input controls the variable impedance between a high impedance, OFF state and a low impedance, ON state. An impedance control circuit is coupled to the impedance control input, which biases the variable impedance in the high impedance, OFF state when at least one of the following conditions occur: the resistance between the power and ground outputs is less than a threshold resistance, and current drawn by the current controller through the power input exceeds a threshold current level.

Abstract: An apparatus and method for controlling a power supply which is coupled to an integrated circuit (IC) that is subject to latch-up is provided. The apparatus includes a comparator circuit that compares a voltage across the IC with a threshold and provides a comparator output. A restart circuit that receives the comparator output, and that receives a fault status signal from the power supply is also included. The restart circuit initiates a restart by shutting off the power supply if the fault status signal is indicative of a latch-up condition in the IC. The restart circuit turns on the power supply if the comparator output indicates that the voltage across the IC is below the threshold.

Abstract: An inrush current controller for a device has a connector for hot-plugging the device into a source of energization. An impedance has a current input coupled to a first contact of the connector and a current output coupled to the device. The impedance has an impedance control input. An impedance control circuit has a logic input coupling to a second contact of the connector. The impedance control circuit has an impedance control output connected to the impedance control input. The impedance control output forces the impedance OFF during a first time interval after hot-plugging. The logic input triggers a limited inrush at the current input after the first time interval.

Abstract: A regulator provides a load voltage. The regulator includes a power driver having a feedback input and a power driver voltage. The regulator includes a comparator having a comparator output related to a combination of the load voltage and a power driver current. The regulator includes a pulse generator controlled by the comparator output and having output pulses with fixed pulse widths. The regulator includes a time limit circuit controlled by the output pulses. The time limit circuit provides the output pulses to the feedback input subject to a time limit between the output pulses.

Abstract: A regulator provides a load voltage. The regulator includes a power driver having a feedback input and a power driver voltage. The regulator includes a comparator having a comparator output related to a combination of the load voltage and a power driver current. The regulator includes a pulse generator controlled by the comparator output and having output pulses with fixed pulse widths. The regulator includes a time limit circuit controlled by the output pulses. The time limit circuit provides the output pulses to the feedback input subject to a time limit between the output pulses.