Mode control circuit for switching regulators and method...

Details Mode control circuit for switching regulators and method... Mode control circuit for switching regulators and method...

2011-03-29

2011-03-29

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S283000, C323S284000

Reexamination Certificate

active

07915873

ABSTRACT:
A mode control method and apparatus for a switching regulator is disclosed. The method receives an input signal and amplifying the input signal to get an amplified signal. The amplified signal is sent to a sample circuit to get a sample signal. The sample signal is delivered to an averaging circuit to get an averaged sensed output signal. The averaged sensed output signal is compared with a first pre-determined threshold or an second pre-determined threshold to get a PWM enable signal. The appropriate mode is determined based on the PWM enable signal.

REFERENCES:
patent: 7436158 (2008-10-01), Huang et al.

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