参数资料
| 型号： | FDMF8704 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC MODULE DRIVER/FET 56MLP 8X8 |
| 标准包装： | 1 |
| 类型： | 高端/低端驱动器 |
| 输入类型： | PWM |
| 输出数： | 1 |
| 电流 - 输出 / 通道： | 32A |
| 电流 - 峰值输出： | 65A |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -55°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-MLP |
| 供应商设备封装： | 56-MLP（8x8） |
| 包装： | 标准包装 |
| 产品目录页面： | 1216 (CN2011-ZH PDF) |
| 其它名称： | FDMF8704DKR |
Application Information
Supply Capacitor Selection
For the supply input (V CIN ) of the FDMF8704, a local ceramic
bypass capacitor is recommended to reduce the noise and to
supply the peak current. Use at least a 1μF, X7R or X5R
capacitor. Keep this capacitor close to the FDMF8704 V CIN and
CGND pins.
Bootstrap Circuit
The bootstrap circuit uses a charge storage capacitor (C BOOT )
and the external schottky diode, as shown in Figure 18. A
Typical Application
V IN 12V
V CIN 5V
bootstrap capacitance of 100nF, X7R or X5R capacitor is
adequate.
The peak surge current rating of the boot diode should be
checked in-circuit, since this is dependent on the equivalent
impedance of the entire bootstrap circuit, including the PCB
traces. Boot diode must be sized big enough to carry the
forward charge current. Refer to Figure 14 for boot diode
average forward current.
The bootstrap diode must have low V F and low reverse current
leakage. Breakdown voltage of the bootstrap diode must be
greater than the BOOT to VSWH voltage.
VIN
PWM
DISB
VCIN
BOOT
HSEN
VSWH
CGND
VIN
PWM
DISB
PGND
VCIN
BOOT
HSEN
VSWH
FDMF8704
VCC
EN
PWM1
CGND
PGND
FDMF8704
PWM
PWM2
Controller PWM3
PWM4
GND
VIN
PWM
DISB
VCIN
BOOT
HSEN
VSWH
VOUT
Signal
GND
Power
GND
CGND
PGND
FDMF8704
VIN
PWM
DISB
VCIN
BOOT
HSEN
VSWH
CGND
PGND
FDMF8704
Figure 17. Typical Application
FDMF8704 Rev. G
8
www.fairchildsemi.com
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