DC/DC converter

Details DC/DC converter DC/DC converter

1996-02-16

1997-05-06

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323284, 323288, 323290, G05F 140

Patent

active

056274599

ABSTRACT:
A DC/DC converter includes a control unit for outputting a control signal on the basis of a voltage difference between a DC output voltage and a reference voltage; a switching element which is connected to a line of the DC input voltage, and which becomes ON-state or OFF-state in accordance with the control signal; and a minimum ON-state duration setting unit, e.g., a monostable multivibrator, which defines the minimum ON-state duration of the switching element, when a necessary output electric power is low. Preferably, the converter includes a charge-pumping circuit having two diodes and two capacitors, so as to obtain from one capacitor a driving voltage source for driving an N-channel type field-effect transistor as the switching element.

REFERENCES:
patent: 4092712 (1978-05-01), Harrigill, Jr. et al.
patent: 4947102 (1990-08-01), Ekstrand et al.
patent: 5045771 (1991-09-01), Kislovski
patent: 5278490 (1994-01-01), Smedley
English language Abstract of JP 4-150765.

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