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UPSRB03

UTC
Part Number UPSRB03
Manufacturer UTC
Description HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR
Published Apr 20, 2020
Detailed Description UNISONIC TECHNOLOGIES CO., LTD UPSRB03 Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITC...
Datasheet PDF File UPSRB03 PDF File

UPSRB03
UPSRB03

Overview
UNISONIC TECHNOLOGIES CO.
, LTD UPSRB03 Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR  DESCRIPTION The UTC UPSRB03 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 multi-mode operations to achieve high performance and high efficiency.
Device operations in PFM in CC mode at large load condition and it operates in PWM with frequency reduction at light/medium load which can cancel audio noise.
The UTC UPSRB03 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 UPSRB03 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, VDD over voltage protection, feedback loop open protection, short circuit protection, leading edge blanking, VDD under voltage lockout, etc.
 FEATURES * Multi-Mode control for cancel audio noise * ±5% constant voltage regulation at universal AC input * Primary side control without TL431 and opto-coupler * High precision constant current regulation at universal AC input * Programmable CV and CC regulation * Eliminates control loop compensation circuitry * Flyback topology in DCM operation * Driver BJT switch * Built-in Line CC compensation * Built-in leading edge blanking * Driver soft start * Built-in primary winding inductance compensation * Open circuit protection * Output over voltage protection * VDD over voltage protection * Short circuit protection  ORDERING INFORMATION Ordering Number UPSRB03G-AF5-R Package SOT25 Packing Tape Reel UPSRB03G-AF5-R (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) AF5: SOT-25 (3) G: Halogen Free and...


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