Power-supply device

Details Power-supply device Power-supply device

2005-04-12

2005-04-12

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

06879137

ABSTRACT:
A step down type DC-DC power-supply device implements both the stabilization of the control loop and the responsibility at the same time. In the power-supply device, an output power signal is fed back to an error amplifier after having passed through a CR smoothing filter provided independently of a power LC smoothing filter. Also, independently of the duty controls over Power MOSFETs, i.e., upper-side/lower-side semiconductor switching components in the steady state, an output from the power LC smoothing filter is added to an upper and lower limit-mode-equipped control circuit, thereby, at the transient state, forcefully setting the duty α at either 0% or 100%.

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Michael T. Zhang, et al., Design Considerations for Low-Voltage On-Board DC/DC Modules for Next Generation of Data Processing Circuits, IEEE Transactions on Power Electronics, vol. 11, No. 2, Mar. 1996.

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