mic9130 Micrel Semiconductor, mic9130 Datasheet - Page 17

• Manufacturer Part Number: mic9130
• Description: High-voltage, High-speed Telecom Dc-to-dc Controller
• Manufacturer: Micrel Semiconductor

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
April 2005
MIC9130
17
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 COMP pin from interfering
with proper control of the current signal.
M9999-040805
Micrel, Inc.