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| SPS KA2S0880 SPS TO-3P-5L The SPS product family is specially designed for an off line SMPS with minimal external component. The SPS consist of high voltage Power SenseFET and current mode PWM IC. Included control IC features a tr-immed oscillator, under voltage lock out, leading edge blanking, optimized gate turnon/turn-off driver, thermal shut down protection, over voltage protection, and temperature compensated precision current source 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, weight and at the same time increase efficiency, productivity and system reliability. It has a basic platform well suited for cost effective monitor power supply. 1.DRAIN 2. GND 3. VCC 4. FB 5. Sync FEATURES * * * * * * * * * Wide operating frequency range up to 150kHz Pulse by pulse over current limiting Over load protection Over voltage protection (Min. 23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET External sync terminal Latch up Mode ORDERING INFORMATION Device KA2S0880 Package TO-3P-5L Rating 800V, 8A Topr (C) -25C to +85C BLOCK DIAGRAM #3 VCC 32V 5V Vref - 5V + 6.4V #4 FB 2A 1mA 2.5R 1R 9V + 7.5V - + 25V - Thermal S/D OVER VOLTAGE S/D - + OSC S R L.E.B 0.1V S R Q #2 GND Q Good logic Internal bias #1 DRAIN SFET #5 Sync Power on reset Rev. B 1 (c) 1999 Fairchild Semiconductor Corporation KA2S0880 SPS ABSOLUTE MAXIMUM RATINGS Characteristic Drain-source (GND) voltage (1) Drain-Gate voltage (RGS=1M) Gate-source (GND) voltage Drain current pulsed (2) Symbol VDSS VDGR VGS IDM EAS IAS ID ID VCC VFB PD (watt H/S) Derating TOPR TSTG Value 800 800 30 32.0 810 25 8.0 5.6 30 -0.3 to VSD 190 1.54 -25 to +85 -55 to +150 Unit V V V ADC mJ A ADC ADC V V W W/C C C Single pulsed avalanche energy (3) Avalanche current (4) Continuous drain current (TC=25C) Continuous drain current (TC=100C) Supply voltage Analog input voltage range 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, VDD=50V, RG=25, starting Tj=25C 4. L=13uH, VDD=330V, Tj=25C 2 SPS KA2S0880 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=0.8Max., 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=8.0A (MOSFET switching time are essentially independent of operating temperature) VGS=10V, ID=8.0A, VDS=0.5BVDSS (MOSFET switching time are essentially independent of operating temperature) VGS=10V, ID=5.0A VDS=15V, ID=5.0A VGS=0V, VDS=25V, f=1MHz Min. 800 - - - 1.5 - - - - - - - - - - Typ. - - - 1.2 2.5 2460 210 64 - 95 150 60 - 20 70 Max. - 50 200 1.5 - - - - 90 200 450 150 150 - - nC nS Unit V A A mho pF NOTE: Pulse test: Pulse width 300S, duty cycle 2% 3 KA2S0880 SPS ELECTRICAL CHARACTERISTICS (Control part) (Ta=25C unless otherwise specified) Characteristic REFERENCE SECTION Output voltage (1) Temperature Stability (1)(2) OSCILLATOR SECTION Initial accuracy Frequency change with temperature Sync threshold voltage (3) PWM SECTION Maximum duty cycle FEEDBACK SECTION Feedback source current Shutdown delay current IFB Idelay Ta=25C, Vfb=GND Ta=25C, 5VVfbVSD Max. inductor current - After turn on 0.7 1.4 0.9 1.8 1.1 2.2 mA A Dmax - 92 95 98 % (2) Symbol Test condition Min. Typ. Max. Unit Vref Vref/T Ta=25C -25CTa+85C 4.80 - 5.00 0.3 5.20 0.6 V mV/C FOSC F/T VSYTH Ta=25C -25CTa+85C Vfb=5V 18 - 6.0 20 5 6.4 22 10 6.8 kHz % V OVER CURRENT PROTECTION SECTION Over current protection UVLO SECTION Start threshold voltage Minimum operating voltage TOTAL STANDBY CURRENT SECTION Start current Operating supply current (control part only) VCC zener voltage SHUTDOWN SECTION Shutdown Feedback voltage Thermal shutdown temperature (Tj) Over voltage protection voltage SOFT START SECTION Soft start current Soft start voltage ISS VSS Sync & S/S=GND VFB=2V 0.8 4.7 1.0 5.0 1.2 5.3 mA V (1) IL(max) Vth(H) Vth(L) 4.40 5.00 5.60 A 14 9 15 10 16 11 V V IST IOPR VZ VSD TSD VOVP VCC=14V Ta=25C ICC=20mA - - - 0.1 6 30 0.3 12 32.5 0.55 18 35 mA mA V 6.9 140 23 7.5 160 25 8.1 - 28 V C V NOTES: 1. These parameters, although guaranteed, are not 100% tested in production 2. These parameters, although guaranteed, are tested in EDS (wafer test) process 3. The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function. 4 SPS KA2S0880 TYPICAL PERFORMANCE CHARACTERISTICS (These characteristic graphs are normalized at Ta=25C) Figure 1. Operating Frequency Figure 2. Feedback Source Current Figure 3. Operating Current Figure 4. Max. Inductor Current Figure 5. Start up Current Figure 6. Start Threshold Voltage 5 KA2S0880 SPS TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (These characteristic graphs are normalized at Ta=25C) Figure 7. Stop Threshold Voltage Figure 8. Maximum Duty Cycle Figure 9. VCC Zener Voltage Figure 10. Shutdown Feedback Voltage Figure 11. Shutdown Delay Current Figure 12. Over Voltage Protection 6 SPS KA2S0880 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (These characteristic grahps are normalized at Ta=25C) Figure 13. Soft Start Voltage Figure 14. Drain Source Turn-on Resistance 7 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACExTM CoolFETTM CROSSVOLTTM E2CMOSTM FACTTM FACT Quiet SeriesTM FAST(R) FASTrTM GTOTM HiSeCTM DISCLAIMER ISOPLANARTM MICROWIRETM POPTM PowerTrenchTM QSTM Quiet SeriesTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 TinyLogicTM UHCTM VCXTM FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. 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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Preliminary First Production No Identification Needed Full Production Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. |
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