FSFR1700HS Fairchild Semiconductor, FSFR1700HS Datasheet
FSFR1700HS
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FSFR1700HS Summary of contents
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... Package FSFR1800HS 9-SIP 9-SIP FSFR1800HSL L-Forming FSFR1700HS 9-SIP 9-SIP FSFR1700HSL L-Forming Notes: 1. The junction temperature can limit the maximum output power. 2. Maximum practical continuous power in an open-frame design at 50°C ambient. © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Advanced Fairchild Power Switch ...
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... Application Circuit Diagram Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter) Block Diagram © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Figure 2. Internal Block Diagram 2 www.fairchildsemi.com ...
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... This pin is the supply voltage of the control IC connection 9 HV This is the supply voltage of the high-side gate-drive circuit CTR This is the drain of the low-side MOSFET. Typically, a transformer is connected to this pin. © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Figure 3. Package Diagram Description 3 www.fairchildsemi.com ...
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... Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Parameter FSFR1800HS/L (4) FSFR1700HS/L (5) (5) =1M) GS FSFR1800HS/L (6) FSFR1700HS/L T =25C C FSFR1800HS/L T =100 =25C C FSFR1700HS/L T =100C C Parameter FSFR1800HS/L FSFR1700HS/L 4 Min. Max. Unit 500 V -0.3 25.0 V -0.3 25.0 V -0.3 525.0 V -0.3 5 600 kHz ...
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... T I =200μ =200μ FSFR1800HS/L V =10V FSFR1700HS/L V =10V =0V FSFR1800HS/L dI DIODE V =0V FSFR1700HS/L dI DIODE HV CC ( =50KHz OSC No Switching f =50KHz OSC No Switching R =26k =50kHz osc (7) V < V ...
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... Low-Side MOSFET Duty Cycle vs. Temperature 1.1 1.05 1 0.95 0.9 -50 - Figure 6. High-Side V (HV CC 1.1 1.05 1 0.95 0.9 -50 - Figure 8. Low-Side V ( © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 =25ºC. A 1.1 1.05 0.95 0 100 Figure 5. Switching Frequency vs. Temperature 1.1 1.05 0.95 0 100 ) Start vs. Temperature Figure 7. High-Side V CC 1.1 1.05 0.95 0 100 ) Start vs ...
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... Typical Performance Characteristics These characteristic graphs are normalized at T 1.1 1.05 1 0.95 0.9 -50 - Temp ( Figure 10. LV OVP Voltage vs. Temperature CC Figure 12. V vs. Temperature RT,RESET Figure 14. V vs. Temperature LINE © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 (Continued) =25ºC. A 1.1 1.05 0.95 0 100 O C) 1.05 0. -50 -25 0 ...
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... Typical Performance Characteristics These characteristic graphs are normalized at T Figure 16. t DELAY,RESET © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 (Continued) =25ºC. A vs. Temperature 8 Figure 17. V vs. Temperature RT,RESET www.fairchildsemi.com ...
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... Hz ] min 792 µ min © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Assuming transistor is 0.2V, the maximum switching frequency is determined as: 12.5V, the IC max CC,START increases Figure 20. Resonant Converter Typical Gain Curve increases. CTC To prevent excessive inrush current and overshoot of output voltage during startup, the IC needs to increase the voltage gain of the resonant converter progressively ...
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... SS SS min Figure 22. Internal Block for Auto-Restart Figure 23. Self Auto-Restart Operation © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 5. Protection Circuits: The FSFR-HS series has several self-protective functions; such as Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Over- Voltage Protection (OVP), Thermal Shutdown (TSD), and ...
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... Figure 28. Half-wave sensing allows low power dissipation in the sensing resistor; while full-wave sensing has less switching noise in the sensing signal. For a time constant range for the filter, 3/100~1/10 of the operating frequency is reasonable. © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 ( ...
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... Figure 29. Capacitive Sensing © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 9. PCB Layout Guidelines: Duty imbalance problems may occur due to the radiated noise from the main transformer, the inequality of the secondary side leakage inductances of main transformer, and so on. This is one of the reasons that the control components in the vicinity of the RT pin are enclosed by the primary current flow pattern on PCB layout ...
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... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...
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... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...
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... Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 15 www.fairchildsemi.com ...