RDK-249 Power Integrations, RDK-249 Datasheet
RDK-249
Specifications of RDK-249
Related parts for RDK-249
RDK-249 Summary of contents
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TFS757-764HG HiperTFS Family ™ Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs Key Benefits Single chip solution for two-switch forward main and flyback • standby High integration allows smaller form factor and higher power • ...
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TFS757-764HG Description .................................................................................................................................................................. 3 Product Highlights ...................................................................................................................................................... 3 Pin Functional Description ......................................................................................................................................... 5 Pin Configuration ...................................................................................................................................................... 5 Functional Block Diagram .....................................................................................................................................6-7 Functional Description ............................................................................................................................................... 8 Output Power Table ............................................................................................................................................... 13 Design, Assembly, and Layout Considerations .................................................................................................... 14 Application Example ................................................................................................................................................. ...
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... The device is ideal for high power applications that require both a main power converter (two-switch forward 414 W, and standby converter (flyback HiperTFS includes Power Integrations’ standard set of comprehen- sive protection features, such as integrated soft-start, fault and over-load protection, and hysteretic thermal shutdown. ...
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TFS757-764HG Typical Two-Switch Function Nominal Duty Cycle Maximum Duty Cycle Switch Current (RMS) Output Catch Diode Clamp Voltage Reset diodes from zero Thermal Shutdown Current Sense Resistor 0.5 V drop (0. High-Side Drive Requires gate-drive transformer (high cost) ...
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Pin Functional Description MAIN DRAIN (D) Pin Drain of the low-side MOSFET transistor forward converter. STANDBY DRAIN (DSB) Pin Drain of the MOSFET of standby power supply. GROUND (G) Pin This pin gives a signal current path to the substrate ...
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TFS757-764HG HIGH-SIDE OPERATING VOLTAGE (VDDH) HSD1 HSD2 BYPASS (BP) MAIN REMOTE-ON PWM INPUT FEEDBACK (FB) 3 V+VT and MAIN CURRENT LIMIT SELECT RESET (R) LINE-SENSE ( Figure 3. Functional Block Diagram for Two-Switch Forward Converter. 6 Rev. C ...
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BYPASS (BP) 115 µA ENABLE 1 ENABLE (EN) T and STANDBY CURREN LIMIT SELECT 1.0 V Figure 4. Functional Block Diagram for Flyback/Standby Converter. www.powerint.com LV (LINE VOLTAGE) FAULT 6.0 V PRESENT AUTO- ENABLE PULL RESTART UP ...
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TFS757-764HG Functional Description The HiperTFS contains two switch-mode power supply controllers and associated low-side MOSFET’s along with high-side driver and high-side MOSFET. The HiperTFS two-switch forward includes a controller along • with low-side power MOSFET, high-side power MOSFET and high-side ...
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MOSFET is held off. By the end of the pre-charge period, the PFC-boost voltage should above the nominal boost voltage. The HiperTFS begins switching, going through the soft-start period (t soft-start period ...
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TFS757-764HG 0.7 0.6 0.5 0.4 0.5 Figure 8. Duty Cycle Limit vs. Ratio of R Pin Current Over L Pin Current. A resistor R is connected from the BYPASS pin to the FB FEEDBACK pin. This resistor feeds current into ...
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Supply Start-Up Sequence V IN 385 V 315 V 100 Standby Output 12 ms Main Output V BP 5.7 V 4.7 V Figure 10. Main and Standby Start-Up. Main Reset Overvoltage Detection There is also an overvoltage ...
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TFS757-764HG are slightly different for the ENABLE pin versus the FEEDBACK pin. The ENABLE pin internal current selection is chosen according to the above table. The current limit selection for both FEEDBACK pin and ENABLE pin takes place when the ...
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Second threshold (I )for standby secondary OVP BP(SD) latch-off. When the BYPASS pin current exceeds this threshold, the standby and main converters are latched-off. This latch can be reset by pulling the LINE-SENSE pin below the ...
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TFS757-764HG Design, Assemble and Layout Considerations Power Table The data sheet power table (Table 1, page 1) represents the maximum advised continuous power based on the following conditions; 1. Typical multi-output PC main with the following outputs + ...
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HiperTFS VDDH CONTROL Bulk Capacitor Figure 16. HiperTFS Layout Considerations. EMI The frequency jitter feature modulates the switching frequency over a narrow band as a means to reduce conducted EMI average and quasi-peaks ...
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TFS757-764HG Minimum Supply Current to VDDH = 1 mA HiperTFS Figure 18. High-Side Bias (15 mA × R OUT(OV) 1 Figure 19. Latching Output OVP. 16 Rev. C 02/ ...
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OUT(OV OUT V 1 Figure 20. Non-Latching Output OVP. Standby Out REMOTE_MIN REM kΩ Remote Figure 21. Remote ON and Standby Bias. ...
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TFS757-764HG V BIAS 10 kΩ Q1 300 kΩ MΩ IN(OV L(OV VR1 - 1 L(OV) Figure 22. Input OVP (Latching). ...
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L 6.8 MΩ AC Input N 6.8 MΩ 0.1 µF Figure 24. Fast AC Reset of BP Latch MΩ Figure 25. L and R Pin Reset and Duty Limit Circuit. www.powerint.com ...
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... RMS switch currents and allows using lower voltage more efficient Schottky diodes on the output. The flyback section uses Power Integrations TinySwitch technology which is often used in designs that demand high-efficiency and low no-load input power consumption. ...
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Main converter. The Main converter will first turn on the bottom switch to allow the high-side drive to receive the boot- strap bias. After 14 ms the Main converter will start switching both switches at 66 kHz and the ...
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TFS757-764HG – C13 + C1 VR3 R6 TP1 Figure 28. Layout of High-Efficiency + Main Output and +5 V, 2.5 A Standby Power Supply. 22 Rev. C 02/11 Y Capacitor C21 C3 C6 ...
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Absolute Maximum Ratings (1,5) DRAIN Voltage High-Side MOSFET .......................-0 530 V DRAIN Peak Current High-Side: TFS757 ................... 3.1 (5.9) TFS758 ...................4.5 (8.4) TFS759 ...................5.0 (9.3) TFS760 ................. 5.7 (10.7) TFS761 ..................6.1 (11.4) TFS762 ..................6.4 (12.1) TFS763 ................. 7.2 ...
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TFS757-764HG Parameter Symbol FEEDBACK Pin PWM Gain DC REG(MA) PWM Gain TC Temperature Drift DCREG FEEDBACK Pin Feed- I back Onset current FB(ON) FEEDBACK Pin Current I at Zero Duty Cycle FB(OFF) FEEDBACK Pin P Internal Filter Pole FB FEEDBACK ...
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Parameter Symbol Maximum Current Limit I LIM(1)(MA) I LIM(2)(MA) I LIM(3)(MA) I LIM(1)(MA) I LIM(2)(MA) I LIM(3)(MA) I LIM(1)(MA) I LIM(2)(MA) I LIM(3)(MA) I LIM(1)(MA) I LIM(2)(MA) I LIM(3)(MA) Current Limit I LIM(1)(MA) I LIM(2)(MA) I LIM(3)(MA) I LIM(1)(MA) I ...
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TFS757-764HG Parameter Symbol Low-Side Main MOSFET (cont.) OFF-State Drain I Leakage Current DSS(D) Breakdown BV Voltage DSS(D) Rise Time t R(D) Fall Time t F(D) High-Side Main MOSFET ON-State Resistance R DS(ON)(HD) Effective Output C Capacitance OSS(EFF)(HD) Breakdown Voltage BV ...
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Parameter Symbol High-Side Main MOSFET (cont.) High-Side Bias V Shunt Voltage DDH(SHUNT) High-Side Undervoltage V ON-Threshold DDH(UVON) High-Side Undervoltage V OFF-Threshold DDH(UVOFF) High-Side Shunt V Hysteresis Voltage DDH(HYST) Standby MOSFET ON-State R Resistance DS(ON)(DS) I DSS1(DS) OFF-State Drain Leakage Current ...
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TFS757-764HG Parameter Symbol Standby Circuit Protection (cont.) ENABLE Pin Current I Limit Selection Range #2 LIM(2)(DSB) ENABLE Pin Current I Limit Selection Range #3 LIM(3)(DSB) ENABLE Pin Current I Limit Selection Range #4 LIM(4)(DSB) I LIM(1)(DSB) I LIM(2)(DSB) I Standby ...
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Typical Performance Characteristics 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 29. Main Supply. Breakdown Voltage vs. Temperature. 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 ...
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TFS757-764HG Typical Performance Characteristics (cont.) 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - Junction Temperature (°C) Figure 35. Standby Supply. Undervoltage Threshold vs. Junction Temperature 100 150 R ...
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Typical Performance Characteristics (cont VDDH Votage (V) Figure 41. VDDH Current vs. VDDH Voltage. 100 -50 - Temperature (°C) Figure 43. Duty Cycle vs. Temperature (I ...
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TFS757-764HG Typical Performance Characteristics (cont.) 10000 1000 100 10 0 100 200 300 DRAIN Pin Voltage (V) Figure 47. Main Supply. Drain Capacitance vs. Drain Voltage. 500 Scaling Factors: TFS757 0.4 400 TFS758 0.6 TFS759 0.8 TFS760 1.0 TFS761 1.2 ...
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Typical Performance Characteristics (cont.) www.powerint.com 2 Scaling Factors: TFS757 0.17 TFS758 0.25 1.5 TFS759/760 0.33 TFS761 0.42 TFS762 0.50 TFS763/764 0. kHz 0 100 200 300 DRAIN Voltage (VD) Figure 53. High-Side MOSFET Power vs. Drain ...
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TFS757-764HG 34 Rev. C 02/11 www.powerint.com ...
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Part Ordering Information Part Number PFS757HG PFS758HG PFS759HG PFS760HG PFS761HG PFS762HG PFS763HG PFS764HG Part Marking Information TFS 757 H G www.powerint.com Option Tube Tube Tube Tube Tube Tube Tube Tube • HiperTFS Product Family • TFS Series Number • Package ...
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... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or Power Integrationslly by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www ...