Error amplifier structures

Details Error amplifier structures Error amplifier structures

2009-01-22

2010-12-07

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S255000, C330S260000

Reexamination Certificate

active

07847634

ABSTRACT:
Error amplifier structures are provided to generate an error signal in response to the difference between an input signal (e.g., a feedback current) and a reference signal (e.g., a bias current). Amplifier embodiments generally include a reference generator and a differencing amplifier. In at least one embodiment, the error generator is arranged to generate first and second bias voltages that correspond to the bias current. In at least one embodiment, the differencing amplifier is configured to provide a reference current to an output node in response to the first bias voltage, provide a feedback current to the output node in response to the second bias voltage, and generate an error current in response to a voltage at the output node. The error amplifier structures are suited for use in various systems such as negative switching regulators.

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“DC-DC Controllers Use Average-Current-Mode Control for Infotainment Applications”, Application Note 3939, Maxim Integrated Products, Dallas, Texas, pp. 1-9.

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