www.fairchildsemi.com FS7M0880 Fairchild Power Switch(FPS) Features Description Precision Fixed Operating Frequency The Fairchild Power Switch(FPS) product family is specially FS7M0880(66kHz) designed for an off line SMPS with minimal external Pulse By Pulse Over Current Limiting components. The Fairchild Power Switch(FPS) consists of a Over Load Protection high voltage power SenseFET and the current mode PWM con- Over Voltage Protection (Min. 25V) troller IC. The PWM controller includes an integrated fixed Internal Thermal Shutdown Function oscillator, the under voltage lock out, the leading edge blanking Under Voltage Lockout block, the optimized gate turn-on/turn-off driver, the thermal Internal High Voltage Sense FET shut down protection, the over voltage protection, the tempera- Latch Up Mode ture compensated precision current sources for loop compensa- Soft Start tion and an fault protection circuit. Compared to just PWM controller combined MosFET or R switching converter solu- CC tion, a Fairchild Power Switch(FPS) can reduce total compo- nent price, design size, and weight,also simultaneously increase efficiency, productivity, and system reliability. It has a simple method of application well suited for cost down design in either a flyback converter or a forward converter. TO-3P-5L 1 1. DRAIN 2. GND 3. V 4. FB 5. S/S CC Internal Block Diagram 3 3 V Vcccc VVoollttageage UVUVLLOO ReRef.f. VccVcc VVcccc GoGoodod 4 4 VckVck 4 4 LoLogigicc DrDrainain 5u5uAA 1m1mAA FFeedeedbabacckk OSOSCC 2.2.5R5R SS QQ RR 5 5 RR SoSofftt Star Startt LELEBB VoVoffffsesett SeSennssee 2 2 5V5V RseRsennssee SoSoururcece SeSennsseFETeFET GNGNDD ReResetset SS 7.7.5V5V QQ ThTheerrmmaall ReResetset PPrrototecectitionon RR OVOVPP OCOCLL CoContntrrool ICl IC Rev.1.0.1 2003 Fairchild Semiconductor CorporationFS7M0880 Absolute Maximum Ratings Parameter Symbol Value Unit Drain-Gate Voltage (R =1M)V 800 V GS DGR Gate-Source (GND) Voltage V 30 V GS (2) Drain Current Pulsed I 32.0 A DM DC (3) Single Pulsed Avalanche Energy E 810 mJ AS (4) Avalanche Current I 15 A AS Continuous Drain Current (T =25C) I 8.0 A C D DC Continuous Drain Current (T =100C) I 5.6 A C D DC Maximum Supply Voltage V 30 V CC,MAX Input Voltage Range V -0.3 to V V FB SD P 190 W D Total Power Dissipation Derating 1.54 W/C Operating Ambient Temperature T -25 to +85 C A Storage Temperature T -55 to +150 C STG Note: 1. T = 25C to 150C j 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L = 24mH, V = 50V, R = 25 , starting Tj =25C DD G 4. L = 13 H, starting T = 25C j 2