Self-oscillation type DC-DC converter
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United States of America Patent
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Feb 14, 1995
Grant Date -
N/A
app pub date -
Mar 18, 1994
filing date -
Mar 19, 1993
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Abstract
In a non-insulated, self-oscillation type DC-DC converter, a first PNP switching transistor (Q1) has the emitter thereof connected to the emitter of a second switching transistor (Q2) of the same conductivity type as the first switching transistor. The base of the first switching transistor (Q1) is connected to the collector of the second switching transistor (Q2). The base of the first switching transistor (Q1) is connected to the base of the second switching transistor (Q2) through a resistor R2. A feedback circuit (4) is connected between the collector of the first switching transistor (Q1) and the base of the second switching transistor (Q2).
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