FS7M0880 FAIRCHILD [Fairchild Semiconductor], FS7M0880 Datasheet
FS7M0880
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FS7M0880 Summary of contents
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... FS7M0680, FS7M0880 Fairchild Power Switch (FPS Features • Pulse by Pulse Current Limit • Over load protection (OLP) - Latch • Over voltage protection (OVP) - Latch • Internal Thermal Shutdown (TSD) - Latch • Under Voltage Lock Out (UVLO) with hysteresis • Internal High Voltage SenseFET (800V rated) • ...
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... FS7M0680, FS7M0880 Internal Block Diagram Vref Soft start 5 Vcc Vref I delay Vcc Vovp TSD Figure 2. Functional Block Diagram of FS7M0680 and FS7M0880 2 Vcc 3 Vcc good 9V/15V Reset OSC I PWM FB 2.5R R LEB Vcc Reset (Vcc<6V) Internal Vref Bias S Q Gate R Q driver ...
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... GND. If the voltage of this pin reaches 7.5V, the over load protection triggers resulting in shutdown of the FPS. This pin is for the soft start. Soft start time is programmed by a capacitor on this pin. TO-3P-5L Figure 3. Pin Configuration (Top View) FS7M0680, FS7M0880 5.S/S 4.Vfb 3.Vcc 2.GND 1.Drain 3 ...
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... FS7M0680, FS7M0880 Absolute Maximum Ratings FS7M0680 Parameter (1) Maximum Drain Voltage Drain-Gate Voltage (R =1MΩ) GS Gate-Source (GND) Voltage (2) Drain Current Pulsed Single Pulsed Avalanche Energy (4) Avalanche Current Continuous Drain Current (T =25°C) C Continuous Drain Current (T =100°C) C Maximum Supply Voltage Input Voltage Range ...
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... Crss td(on) V =0.5BV DD DSS (MOSFET switching tr time are essentially td(off) independent of tf operating temperature) V =10V =0.5BV DS DSS switching time are Qgs essentially independent of Qgd operating temperature) FS7M0680, FS7M0880 Min. Typ. 800 - - - - - =125°C =5.0A - 1.6 - 1600 =25V, - 140 - =8. 150 - ...
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... FS7M0680, FS7M0880 Electrical Characteristics (Ta=25°C unless otherwise specified) Parameter UVLO SECTION Start Threshold Voltage Stop Threshold Voltage OSCILLATOR SECTION Initial Frequency Frequency Change With Temperature Maximum Duty Cycle FEEDBACK SECTION Feedback Source Current Shutdown Delay Current SOFT START SECTION Soft Start Voltage ...
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... FS7M0680, FS7M0880 -40 - 100 120 140 160 Temperature [°C] Start up Current vs. Temp. -40 - 100 120 140 160 Temperature [°C] Vcc Stop Threshold Voltage vs. Temp. -40 -20 ...
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... FS7M0680, FS7M0880 Electrical characteristics 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [°C] Minimum Duty Cycle vs. Temp. 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [°C] Shutdown Feedback Voltage vs. Temp. 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [°C] SoftStart Voltage vs. Temp 100 120 140 160 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 80 100 120 140 160 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 80 100 120 140 160 1 ...
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... Electrical characteristics 1.4 1.3 1.2 1.1 1.0 0.9 0.8 -40 - Temperature [°C] Feedback Current vs. Temp. 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 80 100 120 140 160 -40 - 100 120 140 160 Temperature [°C] Pulse-by-pulse Current limit vs. Temp. FS7M0680, FS7M0880 9 ...
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... FS7M0680, FS7M0880 Functional Description 1. Startup : Figure 4 shows the typical startup circuit and transformer auxiliary winding for FS7M-series. Because all the protections are implemented as latch mode, AC startup is typically used to provide a fast reset as shown in Figure 4. Before FPS begins switching operation, only startup current ...
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... Sense FET, the AOCP block is enabled and monitors the current through the sensing resistor. The voltage across the resistor is then Over load protection *(7.5-2.8)/ Figure 8. Over load protection FS7M0680, FS7M0880 B from 2. delay ...
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... FS7M0680, FS7M0880 compared with a preset AOCP level. If the sensing resistor voltage is greater than the AOCP level, the set signal is applied to the latch, resulting in the shutdown of SMPS. This protection is implemented in latch mode. 2.5R OSC S Q PWM LEB + AOCP - Figure 9. AOCP block 3.3 Over voltage Protection (OVP the secondary side ...
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... C16 IC3 10nF 10nF KA431 R10 1kV 1kV 1kΩ TURNS WINDING METHOD 50T SOLENOID WINDING 4T COPPER FOIL WINDING 5T SOLENOID WINDING 50T SOLENOID WINDING 6T SOLENOID WINDING Remarks @70kHz all short FS7M0680, FS7M0880 12V, 10A C11 1000uF 16V 5V, 26A C14 1000uF 10V 13 ...
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... FS7M0680, FS7M0880 Typical application circuit II (7M0880 : Flyback) Application Output power Adaptor 1. Schematic NTC 10D-11 100uF 400V 2KBP06M3N257 2.2nF 2.2nF 250VAC 250VAC 1uF 50V 22nF LF1 20mH 100nF 275VAC FUSE 250V 2.0A 2. Transformer Specification Winding Specification PIN(S → F) No. 1 → P/2 INSULATION : POLYESTER TAPE t = 0.050mm, 1Layer 12 → ...
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... Package Dimensions TO-3P-5L FS7M0680, FS7M0880 15 ...
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... FS7M0680, FS7M0880 Package Dimensions 16 (Continued) TO-3P-5L(Forming) ...
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... Ordering Information Product Number FS7M0680TU FS7M0680YDTU TO-3P-5L(Forming) FS7M0880TU FS7M0880YDTU TO-3P-5L(Forming Non Forming Type YDTU : Forming type Package Rating TO-3P-5L 800V, 6A TO-3P-5L 800V, 8A FS7M0680, FS7M0880 Fosc 66kHz 66kHz 17 ...
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... FS7M0680, FS7M0880 DISCLAIMER 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. ...