UPSR100

UPSR100 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD UPSR100 Preliminary CMOS IC www.unisonic.com.tw 1 of 6 Copyright © 2013 Unisonic Technologies Co., Ltd QW-R502-946.c SOP-8 HIGH PRECISION CC/CV PRIMARY SIDE REGULATOR „ 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 T L431 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 vo ltage protection, feedback loop open protection, short circuit protec tion, leading edge blanking, V CC under voltage lockout, etc. „ 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 * Driver BJT switch * Built-in leading edge blanking * Built-in primary winding inductance compensation * Open circuit protection * Over voltage protection * Short circuit protection „ ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing UPSR100L-S08-T UPSR100G-S08-T SOP-8 Tube UPSR100L-S08-R UPSR100G-S08-R SOP-8 Tape Reel UPSR100L-S08-R (1)Packing Type (2)Package Type (1) T: Tube, R: Tape Reel (2) S08: SOP-8 (3) L: Lead Free, G: Halogen Free(3)Halogen Free

UPSR100 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 6 . c „ PIN CONFIGURATION „ PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 CS Current sense input. 2 V CC Power supply. 3 OUT Base drive for power BJT. 4 GND Ground.

5 FB The voltage feedback from the auxiliary winding

6 V DD The 5V output of the internal voltage regulator

7 BIAS This pin sets the bias current inside UTC UPSR100 with an external resistor to GND

8 COMP This pin connects a bypass capacitor

„ BLOCK DIAGRAM VDD Regulator & VREF Por2VCC Logic coreOVP8V + 5FB + -4V CV controller Ibias Base drive IREF BIAS 0.43V

3 OUT

0.5V LEB CC controller COMP GND Tdemag detector CS

UPSR100 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 6 . c „ ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage V CC -0.3~30 V Voltage at CS, BIAS, OUT, VDD, COMP to GND -0.3~7 V FB Input (Pin 5) -40~10 V ESD (Machine Model) 200 V Output Current at OUT Internally limited A Power Dissipation at TA=25°C P D 0.657 W Operating Junction Temperature T J 150 °C Storage Temperature T STG -65~150 °C Note: Absolute maximum ratings are those values be yond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. „ THERMAL DATA DESCRIPTION SYMBOL RATINGS UNIT Junction to Ambient θJA 190 °C/W „ ELECTRICAL CHARACTERISTICS (VCC=15V, TA=25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT UVLO SECTION Turn-on Threshold Voltage V TH (ON) 17.5 19 20.5 V Turn-off Threshold Voltage V TH(OFF) 6.5 7.5 8.5 V REFERENCE VOLTAGE SECTION BIAS Pin Voltage V BIAS R BIAS=200kΩ, Before Turn on 1.15 1.20 1.25 V VDD Pin Voltage V DD 4.75 5.0 5.25 V STANDBY CURRENT SECTION Start-up Current I ST R BIAS=200kΩ, Before Turn on 90 110 µA Operating Current I OP R BIAS=200kΩ 500 700 µA DRIVE OUTPUT SECTION IOUT(SINK) R BIAS=200kΩ,VOUT<0.2V 50 mA OUT Maximum Current IOUT(SOURCE) IOUT RBIAS=200kΩ 30 40 mA CURRENT SENSE SECTION Current Sense Threshold V CS 505 520 545 mV Pre-Current Sense V CS(PRE) 455 480 505 mV Leading Edge Blanking 460 ns FEEDBACK INPUT SECTION Feedback Pin Input Leakage Current I FB V FB=4V 11.0 13.5 15.0 µA Feedback Threshold V FB 3.90 4.00 4.10 V Enable Turn-on Voltage V FB(EN) -1.2 -1.0 -0.9 V COMP THRESHOLD VOLTAGE SECTION Turn-on Threshold Voltage V COMP 3.28 3.4 3.58 V PROTECTION SECTION Over Voltage Protection V FB(OVP) 7 8 9 V

discontinuous conduction mode (DCM) flyback power supplies. The voltage regulator provides the internal power supply V DD. For V CC and V DD external capacitors are required. deactivates the IC in case of UVLO. Where V△ indicates the drop voltage of the output diode. Figure 2. Auxiliary voltage waveform voltage, thus constant output voltage can be achieved.

UPSR100 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 6 . c „ TYPICAL APPLICATION CIRCUIT L N Vo Is Co Rcs NA NP NS UTC UPSR100 BIAS GND VDD VCC OUT CS FB COMP Io A typical flyback application by UTC UPSR100 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.