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| Preliminary KA5Q1265RT SPS The SPS product family is specially designed for an off-line SMPS with minimal external components. The SPS consist of high voltage power SenseFET and current mode PWM IC. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turnoff driver, thermal shut down protection, over voltage protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to discrete MOSFET and controller or RCC switching converter solution, a SPS can reduce total component count, design size, and weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective design in QuasiResonant Converter as C-TV power supply. TO -22 0F -5L SPS 1. Drain 2. GND 3. VCC 4. FB 5. Sync FEATURES * * * * * * * * * Quasi Resonant Converter Controller Internal Burst mode Controller for Stand-by mode Pulse by pulse current limiting Over current Latch protection Over voltage protection (Vsync: Min. 11V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto-restart mode ORDERING INFORMATION Device KA5Q1265RT Package TO-220F-5L Topr (C) -25C to +85C BLOCK DIAGRAM + - Sync. REF. PSR REF. Burst mode controller Internal Bias Vref - + UVLO 3 1 - + 5 OSC S R _ Q Ron OVP LEB Roff PWM 4 1.7R Ifb R - + Vfb offset Ids + Vds REF. - S TSD 150oC Power-on Reset Q R Delay 500nS + - OCL REF. Vz Rsense 2 REV. B 1999 Fairchild Semiconductor Corporation Preliminary KA5Q1265RT ABSOLUTE MAXIMUM RATINGS Characteristic Drain-source (GND) voltage (1) Drain-Gate voltage (RGS=1M) Gate-source (GND) voltage Drain current pulsed (4) (2) SPS Symbol VDSS VDGR VGS IDM EAS IAS ID ID VCC VFB VSYNC PD (wt H/S) Derating TOPR TSTG Value 650 650 30 48 785 - 12 8.4 40 -0.3 to VSD -0.3 to 13 135 1.1 -25 to +85 -55 to +150 Unit V V V ADC mJ A ADC ADC V V V W W/C C C Single pulsed avalanche energy (3) Avalanche current Continuous drain current (TC=25C) Continuous drain current (TC=100C) Supply voltage Analog input voltage range (F/B pin) Analog input voltage range (Sync pin) Total power dissipation Operating temperature Storage temperature NOTES: 1. Tj=25C to 150C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L=24mH, starting Tj=25C 4. L=13uH, starting Tj=25C Preliminary KA5Q1265RT ELECTRICAL CHARACTERISTICS (SFET part) (Ta=25C unless otherwise specified) Characteristic Drain-source breakdown voltage Zero gate voltage drain current Symbol BVDSS IDSS Test condition VGS=0V, ID=50A VDS=Max., Rating, VGS=0V VDS=0.8*Max., Rating, VGS=0V, TC=125C Static drain-source on resistance (note) RDS(ON) Forward transconductance (note) Input capacitance Output capacitance Reverse transfer capacitance Turn on delay time Rise time Turn off delay time Fall time Total gate charge (gate-source+gate-drain) Gate-source charge Gate-drain (Miller) charge gfs Ciss Coss Crss td(on) tr td(off) tf Qg Qgs Qgd VDD=0.5BVDSS, ID=12.0A (MOSFET switching time are essentially independent of operating temperature) VGS=10V, ID=12.0A, VDS=0.5BVDSS (MOSFET switching time are essentially independent of operating temperature) VGS=10V, ID=6.0A VDS=15V, ID=6.0A VGS=0V, VDS=25V, f=1MHz Min. 650 - - - 5.7 - - - - - - - - - - Typ. - - - 0.72 - 2700 300 61 18 37 88 36 - 20 69 SPS Max. - 200 500 - - - - - - - - - 140 - - Unit V A A S pF nS nC NOTE: Pulse test: Pulse width 300S, duty cycle 2% Preliminary KA5Q1265RT ELECTRICAL CHARACTERISTICS (Control part) (Ta=25C unless otherwise specified) Characteristic OSCILLATOR SECTION Initial accuracy Frequency change with temperature PWM SECTION Maximum duty cycle FEEDBACK SECTION Feedback Source Current Shutdown Delay Current IFB IDELAY Ta=25C, 0V SPS Symbol Test condition Min. Typ. Max. Unit FOSC - Ta=25C -25C 20 5 22 10 KHz % 98 % 1.1 6 mA A OVER CURRENT PROTECTION SECTION Over Current Protection UVLO SECTION Start threshold voltage Minimum oeration voltage TOTAL STANDBY CURRENT SECTION Start threshold voltage Operating supply current (Control part only) SHUTDOWN SECTION Shutdown Feedback voltage Thermal shutdown temperature (Tj) Over Voltage Protection Voltage Over Current latch Protection BURST MODE SECTION Burst mode Threshold Voltage Burst mode Hysteresis Voltage Burst mode Enable Feedback voltage Burst mode Current Limit VBURST VBURSTH VBURST_EN IBURST Vfb=0V Vfb=0V VCC=11V VCC=11.5V 10.6 0.7 0.7 0.7 11.0 1 1.0 0.85 11.4 1.2 1.3 1.0 V V V V (1) (1) IL(MAX) Max. inductor current - After turn on 5.28 6.00 6.72 A IST IOPR 14 8 - - 15 9 16 10 V V Vth(H) Vth(L) VCC=14 VCC<28 0.1 10 0.2 18 mA mA VSD TSD VOVP VOCL Vfb>6.5V - Vsync>11V - 6.9 140 11 0.9 7.5 - 12 1.0 8.1 - 13 1.1 V C V V Preliminary KA5Q1265RT ELECTRICAL CHARACTERISTICS (Continued) (Ta=25C unless otherwise specified) Characteristic SYNCHORONIZATION SECTION Burst Sync Threshold Voltage Burst Sync Hysteresis Voltage Normal Sync Threshold Voltage Normal Sync Hysteresis Voltage VBSY VBSYH VNSY VNSYH VPR GPR VFB=0V VFB=0V VFB=5V VFB=5V SPS Symbol Test condition Min. Typ. Max. Unit 3.1 2.0 4.0 1.8 3.5 2.25 4.5 2.0 3.9 2.5 5.0 2.2 V V V V PRIMARY SIDE REGULATION SECTION Primary Reg. Threshold Voltage Primary Reg. Transconductance IFB=0 - 32.0 - 32.3 2.6 32.6 - V mA/V NOTE: 1. These parameters, although guaranteed, are not 100% tested in production 2. These parameters, although guranteed, are tested in EDS (wafer test) process KA5Q1265RT LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 12/28/99 0.0m 001 Stock#DSxxxxxxxx 1999 Fairchild Semiconductor Corporation 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. |
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