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UNISONIC TECHNOLOGIES CO., LTD UPSS1650 Preliminary CMOS IC www.unisonic.com.tw 1 of 7 Copyright © 2013 Unisonic Technologies Co., Ltd QW-R502-947.d HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH  DESCRIPTION The UTC UPSS1650 is a primary control switch mode charger and adapter applications. The cont rolled variable is transferred by an auxiliary winding from the se condary to the primary side. The device integrates PWM controller to enhance the performance of discontinuous conduction mode (DCM) flyback converters. The UTC UPSS1650 operates in primary-side sensing and regulation. Opto-coupler and T L431 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 UPSS1650 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, V DD over voltage protection, V DD clamp, OTP, leading edge blanking, VDD under voltage lockout, etc.  FEATURES * Built-in 600V Power MOSFET * ±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 * Built-in leading edge blanking DIP-8 SOP-8 * Built-in primary winding inductance compensation * Power on soft start * Gate Output Maximum Voltage Clamped at 15V * Cycle-by-cycle current limiting * Over voltage protection * V DD under-voltage lockout  ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free UPSS1650L-D08-T UPSS1650G-D08-T DIP-8 Tube UPSS1650L-S08-R UPSS1650G-S08-R SOP-8 Tape Reel UPSS1650L-D08-T (1)Packing Type (2)Package Type (1) T: Tube, R: Tape Reel (2) D08: DIP-8, S08: SOP-8 (3) L: Lead Free, G: Halogen Free(3)Halogen Free

UPSS1650 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 2 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 7 . d  PIN CONFIGURATION VDD COMP INV CS GND GND DRAIN DRAIN  PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION

1 V DD Power Supply

2 COMP Loop Compensation

3 INV The voltage feedback from the auxiliary winding

4 CS Current sense input

5/6 DRAIN Power MOSFET Drain Pin 7/8 GND Ground  BLOCK DIAGRAM

UPSS1650 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 3 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 7 . d  ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Drain Voltage (Off State) B VDSS -0.3~Bvdss V VDD Zener Clamp Continuous Current I DD 10 mA COMP Voltage V COMP -0.3~7 V CS Input Voltage V CS -0.3~7 V INV Input Voltage V INV -0.3~7 V Operating Junction Temperature T J -20~150 °C Storage Temperature T STG -55~150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. Drain Pin Connected 100mm 2 PCB copper clad.  THERMAL CHARACTERISTICS PARAMETER SYMBOL RATINGS UNIT Junction to Ambient DIP-8 θJA 75 °C/W SOP-8 90 °C/W  OUTPUT POWER TABLE PARAMETER RATINGS UNIT Adapter (Note) 230VAC±15% 6 W 85-264VAC 5 W Note: Maximum practical continuous power in an Adapter desi gn with sufficient drain pattern as a heat sink, at 50°C ambient.

UPSS1650 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 4 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 7 . d  ELECTRICAL CHARACTERISTICS (TA=25°C, VDD=15V, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT SUPPLY SECTION Turn-on Threshold Voltage V TH(ON) 13.5 14.5 15.5 V Turn-off Threshold Voltage V TH(OFF) 8.5 9 9.5 V VDD OVP Protection V DD_OVP 26 V Startup Current I DD-ST 5 20 μA Operating Current I DD-OP 1.6 2 mA Green-Mode Operating Current I DD-GREEN 1.3 mA OSCILLATOR SECTION Maximum Frequency f OSC 50 55 60 kHz Minimum Frequency at CCM f OSC-CM-MIN 18 kHz Minimum Frequency at No-load f OSC-N-MIN 370 Hz Frequency Hopping Range △f/freq ±5.0 % Frequency Hopping Period t FHR 3 ms Frequency Variation vs. VDD Deviation f DV V DD=10~25V 1 2 % Frequency Variation vs. Temperature Deviation fDT T A=-20°C~+150°C 15 % INV SECTION Reference Voltage for EA V VR 1.94 2.00 2.03 V Reference Voltage for CCM V VR_CCM 0.5 V Max. Cable Compensation Current I CABLE_MAX 42 uA CURRENT SENSE SECTION Current Sense Threshold Voltage V CS 740 760 780 mV OCP Propagation Delay t D_OC 90 200 nS Leading Edge Blank Time t LEB 540 nS Soft Start Time t SS 10 mS POWER MOSFET SECTION MOSFET DS Breakdown Voltage B VDSS 600 V On Resistance R DS(ON) 17 20 Ω OTP SECTION Threshold Temperature of OTP (Note) T OTP +140 °C Note: When the over-temperature protecti on is activated, the power system enters auto restart mode and output is disabled.

performance of discontinuous conduction mode (DCM) flyback converters. VDD voltage reaches VTH(ON), the internal startup circuit is disabled and the IC turns on. △Where V indicates the drop vo ltage of the output diode. Figure 2. Auxiliary voltage waveform output voltage, thus constant output voltage can be achieved.

UPSS1650 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 7 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 9 4 7 . d  OPERATION DESCRIPTION(Cont.) Protection Control Good power supply system reliability is achieved with its comprehensive protecti on features including V DD over-voltage protection, V DD Clamp, GATE Clamp, Power on soft start, Cycle-by-cycle current limiting, short circuit protection, leading edge blanking, OTP and UVLO, etc. VDD is supplied by transformer auxiliary winding output. The output of UTC UPSS1650 is shutdown when V DD drops below VTH(OFF) and the power converter enters power on start-up sequence thereafter.  TYPICAL APPLICATION CIRCUIT DRAIN CS GND INV COMP VDD UTC UPSS1650 L N Vo Is CoNS Io NP NA RCS 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.