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UPSR1103

Unisonic Technologies
Part Number UPSR1103
Manufacturer Unisonic Technologies
Description HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR
Published Mar 12, 2016
Detailed Description UNISONIC TECHNOLOGIES CO., LTD UPSR1103 Advance HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR CMOS IC  DES...
Datasheet PDF File UPSR1103 PDF File

UPSR1103
UPSR1103

Overview
UNISONIC TECHNOLOGIES CO.
, LTD UPSR1103 Advance HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR CMOS IC  DESCRIPTION The UTC UPSR1103 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 integrates PWM controller to enhance the performance of discontinuous conduction mode (DCM) flyback converters.
The UTC UPSR1103 operates in primary-side sensing and regulation.
Opto-coupler and TL431 could be eliminated.
It also provides off-time modulation to linearly decrease PWM frequency under light-load conditions so that low standby power can be achieved.
The UTC UPSR1103 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, VDD over voltage protection, VDD clamp, OTP, leading edge blanking, VDD under voltage lockout, etc.
SOP-8  FEATURES * High voltage startup * ±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 * Programmable cable compensation in CV mode * Flyback topology in DCM operation * Frequency hopping to reduce system EMI * Driver MOSFET switch * Built-in leading edge blanking * Built-in primary winding inductance compensation * Gate output maximum voltage clamped at 15V * Cycle-by-cycle current limiting * Over voltage protection * VDD under-voltage lockout  ORDERING INFORMATION Ordering Number Lead Free Halogen Free UPSR1103L-S08-T UPSR1103G-S08-T Package SOP-8 Packing Tube www.
unisonic.
com.
tw Copyright © 2013 Unisonic Technologies Co.
, Ltd 1 of 8 QW-R502-961.
a UPSR1103  PIN CONFIGURATION CS 1 GATE 2 VDD 3 COMR 4 Advance 8 HV 7 NC 6 GND 5 VS CMOS IC  PIN DESCRIPTION PIN NO.
1 2 3 4 5 6 7 8 PIN NAME CS GATE VDD ...


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