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UPSR100

Unisonic Technologies
Part Number UPSR100
Manufacturer Unisonic Technologies
Description HIGH PRECISION CC/CV PRIMARY SIDE REGULATOR
Published Mar 12, 2016
Detailed Description UNISONIC TECHNOLOGIES CO., LTD UPSR100 Preliminary HIGH PRECISION CC/CV PRIMARY SIDE REGULATOR CMOS IC  DESCRIPTIO...
Datasheet PDF File UPSR100 PDF File

UPSR100
UPSR100

Overview
UNISONIC TECHNOLOGIES CO.
, LTD UPSR100 Preliminary HIGH PRECISION CC/CV PRIMARY SIDE REGULATOR CMOS IC  DESCRIPTION The UTC UPSR100 is a primary control unit for switch mode charger and adapter applications.
The controlled variable is transferred by an auxiliary winding from the secondary to the primary side.
The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.
The UTC UPSR100 operates in primary-side sensing and regulation.
Opto-coupler and TL431 could be eliminated.
It also eliminates the need of loop compensation circuitry while maintaining stability.
The UTC UPSR100 achieves high precision CV/CC regulation and high power efficiency.
It offers comprehensive protection coverage with auto-recovery features including Cycle-by-cycle current limiting, output over voltage protection, feedback loop open protection, short circuit protection, leading edge blanking, VCC under voltage lockout, etc.
SOP-8  FEATURES * ±5% constant voltage regulation at universal AC input * High precision constant current regulation at universal AC input * Primary side control without TL431 and opto-coupler * Programmable CV and CC regulation * Eliminates control loop compensation circuitry * Flyback topology in DCM operation * Random frequency modulation to reduce system EMI  ORDERING INFORMATION * Driver BJT switch * Built-in leading edge blanking * Built-in primary winding inductance compensation * Open circuit protection * Over voltage protection * Short circuit protection Ordering Number UPSR100G-S08-R Package SOP-8 Packing Tape Reel www.
unisonic.
com.
tw Copyright © 2015 Unisonic Technologies Co.
, Ltd 1 of 7 QW-R502-946.
d UPSR100  MARKING Preliminary  PIN CONFIGURATION CMOS IC  PIN DESCRIPTION PIN NO.
1 2 3 4 5 6 7 8 PIN NAME CS VCC OUT GND FB VDD BIAS COMP DESCRIPTION Current sense input.
Power supply.
Base drive for power BJT.
Ground.
The voltage feedback from the auxiliary winding The 5V o...


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