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UPSR105

UTC
Part Number UPSR105
Manufacturer UTC
Description POWER SUPPLY CONTROLLER
Published Oct 22, 2023
Detailed Description UNISONIC TECHNOLOGIES CO., LTD UPSR105 Advance PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER CMOS IC...
Datasheet PDF File UPSR105 PDF File

UPSR105
UPSR105

Overview
UNISONIC TECHNOLOGIES CO.
, LTD UPSR105 Advance PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER CMOS IC  DESCRIPTION The UTC UPSR105 is a high performance AC/DC power supply controller for battery charger and adapter applications.
It can meet less than 10mW standby power for “Super Star” charger criteria.
SOP-8 The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.
The UTC UPSR105 provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring an opto-coupler.
It also eliminates the need of loop compensation circuitry while maintaining stability.
The UTC UPSR105 is equipped with both cable drop compensation function to meet various cables with different lengths and gauges and adjustable line voltage compensation function.
When UTC UPSR105 is used with 2nd-side synchronous rectification, better under-shoot performance and higher conversion efficiency can be achieved.
The UTC UPSR105 has internal over temperature protection for itself, and also provides dedicated pin for ex ternal over temperature protection.
 FEATURES * Primary Side Control for Eliminating Opto-coupler * 10mW No-load Input Power * Flyback Topology in DCM Operation * External Adjustable Line Compensation for CC * External Adjustable Cable Compensation for CV * Multiple PWM/PFM Control Mode to Improve Audio Noise Efficiency * VCS Jitter to Reduce System EMI * Valley-on for the Higher Efficiency and Better EMI  ORDERING INFORMATION * Multiple Protections: -Over Voltage Protection (OVP) -Output Short Circuit Protection (SCP) -Transformer Saturation Protection (TSP) via Primary Peak -Current Limitation -OTP and External Over Temperature Protection (OTP) * Matching 2nd-side synchronous rectification with Schottky Synchronous Rectifier Solution Ordering Number Lead Free Halogen Free UPSR105L-S08-R UPSR105G-S08-R Package SOP-8 Packing Tape R...


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