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BD6762FS-E2 Datasheet(PDF) 7 Page - Rohm |
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BD6762FS-E2 Datasheet(HTML) 7 Page - Rohm |
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7 / 23 page  BD6761FS,BD6762FV Technical Note 7/22 www.rohm.com 2010.06 - Rev.A © 2010 ROHM Co., Ltd. All rights reserved. 2)BD6762FV Fig.10 BD6762FV Block Diagram BD6762FV pin Function No. Pin name Function No. Pin name Function 1 GND GND pin 21 ST/SP Start/Stop pin 2 RF Motor current detection pin 22 FR Forward/reverse rotation switching pin 3 UHG U-phase high-side FET gate pin 23 SB Short brake pin 4 U Protection pin for U-phase high-side FET GS breakdown voltage 24 120/SL 120°/slope switching pin 5 ULG U-phase low-side FET gate pin 25 FGIN+ FG amplifier input + pin 6 VHG V-phase high-side FET gate pin 26 FGIN- FG amplifier input - pin 7 V Protection pin for V-phase high-side FET GS breakdown voltage 27 FGOUT FG amplifier output pin 8 VLG V-phase low-side FET gate pin 28 FGSOUT FGS output pin 9 WHG W-phase high-side FET gate pin 29 CLKIN Reference CLK input pin 10 W Protection pin for W-phase high side FET GS breakdown voltage 30 LPF VCO system loop filter connection pin 11 WLG W-phase low-side FET gate pin 31 POUT PLL output pin 12 VREG Internal power supply 5 V output pin 32 DOUT Speed discriminator output pin 13 CFE PWM frequency control pin 33 INTIN Integration amplifier input pin 14 RFE CEF charge/discharge current control pin 34 INTOUT Integration amplifier output pin 15 HU+ Hall signal input pin 35 LP Motor lock protection time setting pin 16 HU- Hall signal input pin 36 LD Motor rotation number lock detection pin 17 HV+ Hall signal input pin 37 VCC VCC pin 18 HV- Hall signal input pin 38 VG Step-up voltage output pin 19 HW+ Hall signal input pin 39 CP2 Capacitor connection pin (to CP1) 20 HW- Hall signal input pin 40 CP1 Capacitor connection pin (to CP2) 2k (1kΩ ~ 5kΩ) 1kΩ ~ 100kΩ R1 1kΩ ~ 100kΩ 0.1µF C9 0.33µF 5k (2kΩ ~ 10kΩ) R2 BOOSTER ST/SP FR FGIN+ FGIN- FGOUT INTOUT VG VCC LP CP2 GND UHG ULG VHG VLG WHG WLG CFE RFE HW+ HW- M V U W DOUT INTIN HV+ HV- SB 120/SL CLKIN LPF POUT LD MOS FET VCO FGSOUT CP1 RF HU+ HU- PRE DRIVER VELOCITY DISCRIMINATOR REGURATOR DIVIDER VCO PHASE COMPARISON PLL HALL COMP LP LD CLK OSCILLATOR DAC3 470pF 1kΩ (0.01µF~0.1µF) 0.1µF 1000pF (500pF ~ 2000pF) 20k (20kΩ ~ 100kΩ) 0.01µF 0.1µF 0.1Ω 0.01µF (0.01µF ~ 0.1µF) 10µF C7 0.22µF (0.1µF ~ 1µF) R6 220kΩ C5 0.047µF C6 0.47µF R5 1MΩ R4 20kΩ C8 0.33µF R7 2kΩ 150pF 390kΩ 4.7kΩ 0.1µF 1µF VREG LOGIC TRIANGULAR OSCILLATOR MOS FET VCO MOS FET VCO 0.1µF 0.1µF 0.01µF 0.01µF HU HV HW VCC 10kΩ 10kΩ Capacitor for the protection between the output FET drain and source See P. 18/22. Resistor for setting the current limit See P. 18/22. RF voltage smoothing low pass filter See P. 18/22. Capacitor for preventing VREG oscillation See P. 18/22. PWM frequency external constant See P. 18/22. Capacitor for Hall noise elimination See P. 18/22. Capacitor for setting VG current capacity See P. 18/22. Resistor for setting FG amplifier gain and the capacitor for the filter See P. 18/22. ⑦ ⑤ ⑨ ④ ⑪ RNF R1 C1 R2 C2 ⑬ Speed lock detection pull-up resistor Capacitor for the motor lock detection time See P. 19/22. Integration amplifier external constant See P. 19/22. FGSOUT pull-up resistor MOS FET ① Output FET gate voltage stabilization resistor See P. 19/22. For setting Hall input level See P. 18/22. ⑥ For setting Hall input level See P. 18/22. ⑥ LPF external constant See P. 19/22. ⑫ Capacitor for VCC pin noise elimination See P. 19/22. ⑰ ⑱ ⑲ ⑩ ⑧ ③ ⑮ |
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