Reverse current preventing circuit with an automatic...

Details Reverse current preventing circuit with an automatic... Reverse current preventing circuit with an automatic...

2007-11-06

2007-11-06

Nguyen, Matthew V. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S222000, C323S283000, C323S285000

Reexamination Certificate

active

11278965

ABSTRACT:
A synchronous switching voltage converter has a first switch, a second switch, and an inductor, coupled together to a switch node. A reverse current preventing circuit has a fixed reference current source, a correcting circuit, a variable reference current generating circuit, and a comparing circuit. Based on a comparison between an inductor current and the fixed reference current source, the correcting circuit generates a correcting signal. The variable reference current generating circuit generates a variable reference current signal, which is adjusted in accordance with the correcting signal. Based on a comparison between the inductor current and the variable reference current signal, the comparing circuit applies a preventing signal to the second switch so as to turn off the second switch.

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Steve Mappus, “Predictive Gate Drive™ Boosts Synchronous DC/DC Power Converter Efficiency”. Application Report, Apr. 2003, pp. 1-25, SLUA281, Texas Instruments, Dallas, Texas.

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