FDMF8704V Fairchild Semiconductor, FDMF8704V Datasheet
FDMF8704V
Specifications of FDMF8704V
Related parts for FDMF8704V
FDMF8704V Summary of contents
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... Fairchild Semiconductor Corporation FDMF8704V Rev. G General Description The FDMF8704V is a fully optimized integrated Driver plus MOSFET power stage solution for high current synchronous buck DC-DC applications. The device integrates a driver IC and two Power MOSFETs into a space saving, MLP 8x8, 56-pin package ...
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... VIN 10 TEST PAD 1 22-38 PGND 39 TEST PAD 2 52 REGOUT 54 REGFB 55 DISB 56 PWM FDMF8704V Rev (CGND) (VIN (VSWH Figure 2. MLP 8x8 56L Bottom View IC Ground. Ground return for driver IC. High Side FET Enable. Must be connected to BOOT pin. Auxiliary Power for 5V regulator Op-Amp. ...
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... PWM Input Current DISB Input High Voltage DISB Input Low Voltage DISB Input Current Auxiliary Input Voltage Operating Range V Regulator Output Voltage Propagation Delay Note 2: t refers to HIGH-to-LOW transition, t PDL(LDRV/HRDV) FDMF8704V Rev 1MHz 100°C sw PCB = 10µs Min. 4.5 7 0.8 Symbol ...
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... REGFB VCIN DISB PWM Functional Description The FDMF8704V is a driver plus FET module optimized for synchronous buck converter topology. A single PWM input signal is all that is required to properly drive the high-side and the low-side MOSFETs. Each part is capable of driving speeds up to 1MHz. ...
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... Timing Diagram DISB LDRV / HDRV V IH(PWM) PWM LDRV t HDRV-SW SW FDMF8704V Rev IH(DISB) V IL(DISB) t PDL(DISB) Figure 4. Output Disable Timing V IL(PWM) t PDL(LDRV) 1.2V PDH(HDRV) t PDL(HDRV) t PDH(LDRV) 2.2V Figure 5. Adaptive Gate Drive Timing 5 t PDH(DISB) www.fairchildsemi.com ...
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... Figure 8. Power Loss vs. Switching Frequency 1.15 1.10 1. 12V 1.3V 1.00 OUT I = 30A OUT L = 0.33uH f = 1MHz SW 0.95 4.5 5.0 Driver Supply Voltage, V Figure 10. Power Loss vs. Driver Supply Voltage FDMF8704V Rev 0.33uH 100 125 150 Figure 7. Module Power Loss vs. Output Current 1.15 1.10 1.05 1.00 0.95 6 ...
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... KHz SW Figure 14. Driver Supply Current vs. Frequency 1. CIN 1. 1.80 1. 1.70 1.65 -50 - Temperature, Figure 16. DISB Threshold Voltage vs. Temperature FDMF8704V Rev. G 1.0 V CIN DISB = 5V 0.9 0.8 0.7 0.6 0.5 0.4 0.6 0.8 1.0 -50 Figure 13. Driver Supply Current vs. Temperature 1.83 V CIN 1.81 1.79 1.77 1.75 ...
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... FDMF8704V, a local ceramic CIN bypass capacitor is recommended to reduce the noise and to supply the peak current. Use at least a 1µF, X7R or X5R capac- itor. Keep this capacitor close to the FDMF8704V V CGND pins. Bootstrap Circuit The bootstrap circuit uses a charge storage capacitor (C and the external schottky diode, as shown in Figure 18 ...
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... P (W) LOSS IN OUT PCB Layout Guideline Figure 19. shows a proper layout example of FDMF8704V and critical parts. All of high current flow path, such and GND copper, should be short and wide for better and OUT stable current flow, heat radiation and system performance. Following is a guideline which the PCB designer should consider: 1 ...
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... Dimensional Outline and Pad layout FDMF8704V Rev. G (DATUM A) Bayan Lepas FIZ 11900, Penang, Malaysia 10 www.fairchildsemi.com ...
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... TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended exhaustive list of all such trademarks. ® ACEx Build it Now™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ ...