Control circuit for step-down DC-DC converter, step-down...

Details Control circuit for step-down DC-DC converter, step-down... Control circuit for step-down DC-DC converter, step-down...

2008-03-25

2011-12-06

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

08072199

ABSTRACT:
To provide a control circuit of a step-down DC-DC converter, a step-down DC-DC converter and a control method thereof which can prevent overshoot and production of a through current flowing to a main switching transistor and a synchronous rectifier transistor by adopting a simple circuit configuration. The control circuit of the step-down DC-DC converter in which a main switching transistor M0is constituted of a NMOS transistor has a MOS transistor M2connected between a gate of the main switching transistor M0and a ground potential and is operable to become conductive in response to an OFF command from the main switching transistor M0.

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patent: 2002-84741 (2002-03-01), None
patent: 2005-174351 (2005-06-01), None

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