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ERROR AMPLIFIER CIRCUITS FOR DC-DC CONVERTERS, DC-DC CONVERTERS AND CONTROLLERS
ERROR AMPLIFIER CIRCUITS FOR DC-DC CONVERTERS, DC-DC CONVERTERS AND CONTROLLERS
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机译:DC-DC转换器,DC-DC转换器和控制器的误差放大器电路
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摘要
An error amplifier circuit for a DC-DC power converter controller is disclosed for providing an amplified error signal to a switch control circuit, the circuit comprising an error amplifier first stage. The first stage comprises: a first input terminal for receiving a voltage proportional to an output voltage of the converter; an output node; a first operational transconductance amplifier in a first path between the input terminal and the output node and having a first input connected to the input terminal, a second input connectable to a reference signal, and an output connected to the output node; and a second, parallel, path comprising a series combination of an amplifier, a second OTA and a capacitor. The second OTA has an output connected to the capacitor, a first input connected to an output of the amplifier, and a second input connected to the output. Associated control circuits, controllers and converters are also disclosed.
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