Abstract: A direct current to direct current (DC/DC) converter control systems and related methods are disclosed. An exemplary embodiment provides a control circuit configured to modulate the duty cycles of a first switching device and a second switching device, and is further configured to compensate for a voltage drift at a monitoring node by varying the modulation for at least one of the switching devices.

Abstract: A compensation circuit for a DC—DC converter having a low voltage output line and a plurality of high voltage output lines applied to a plurality of loads includes an adjustable impedance source connected to the low voltage output line. The impedance source generates a feedback control signal to the DC—DC converter used to control the transformer duty cycle. A sensing circuit is connected to the plurality of high voltage output lines for generating a control signal which represents variations in the output voltages of the high voltage output lines. The control signal is applied to the impedance source to thereby regulate the feedback control signal which in turn provides regulation for the high voltage output lines.

Abstract: In a flyback converter receiving a high voltage DC input for generating a low voltage output, a power control circuit includes a peak current mode controller having as an input, the flyback converter output. The controller generates a feedback signal to the flyback converter for controlling the switching frequency of switches present in the flyback converter. The peak current controller includes a clock circuit. Circuitry monitors the high voltage DC input. The monitoring circuit generates a control signal which is applied to the controller clock circuit for controlling the switching frequency of the flyback converter to thereby control output power levels.

Abstract: A digital electronics system, such as a computer, includes circuits which provides signals proportional to the instantaneous voltage and current on the power bus to a microprocessor. The microprocessor uses these signals, the capacitance of the system filter capacitors, and the desired time for the system voltage to remain above a minimum voltage, to calculate an instantaneous voltage threshold. When the power bus voltage falls below this threshold voltage, the microprocessor provides a signal warning of impending power failure. The product of the voltage and current, i.e. the instantaneous system power, is displayed on an alphanumeric LED on the front panel of the computer.