UNISONIC TECHNOLOGIES CO.
, LTD
UM612/A
LINEAR INTEGRATED CIRCUIT
SPS SECONDARY-SIDE CC/CV CONTROLLER
DESCRIPTION
The UTC UM612/A is a secondary-side CC/CV controller for SPS applications.
It integrates a Constant Current (CC) regulating amplifier, a Constant
Voltage (CV) regulating amplifier, and 2 precision reference
voltages.
An internal 2.
5V reference
voltage is generated from VCC input power.
The UTC UM612/A can be used to monitor the transformer secondary-side output
voltage by the CV control loop and regulate the output current by the CC control loop at the same time.
The transformer secondary-side output
voltage can be monitored by the FB pin
voltage.
The sensed FB pin
voltage i...