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MIC9130 Datasheet(PDF) 17 Page - Micrel Semiconductor

Part # MIC9130
Description  High-Voltage, High-Speed Telecom DC-to-DC Controller
PDF  19 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC9130 Datasheet(HTML) 17 Page - Micrel Semiconductor

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April 2005
17
M9999-040805
MIC9130
Micrel, Inc.
Error Amplifier
The error amplifier is part of the voltage control loop of the
power supply. The FB pin is the inverting input to the error
amplifier. The non-inverting input is internally connected to
a 2.5V reference. The output of the error amplifier, COMP,
is connected to the PWM comparator. The error amplifier
provides the reference to limit and control the peak current
of the power supply. There is a 1.2V level shift between the
output of the error amplifier and the PWM comparator. This
allows the output of the error amplifier to operate in a linear
region and prevents loading on the COMPpin from interfering
with proper control of the current signal.



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