UPSR100_15 Datasheet, PDF (1/7 Pages) Unisonic Technologies – HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

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, V_CC
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
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