参数资料
型号: MC34921AE
厂商: Freescale Semiconductor
文件页数: 32/36页
文件大小: 0K
描述: IC MOTOR DRVR PWM DC DUAL 64LQFP
标准包装: 800
应用: DC 电机驱动器,步进电机驱动器,H 桥式
输出数: 2
电流 - 输出: ±4.5A
电压 - 负载: 0 V ~ 38 V
电源电压: 4.8 V ~ 5.2 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP 裸露焊盘
供应商设备封装: 64-LQFP EP(10x10)
包装: 散装
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Table 21. High-Side Out (HSOUT) Drivers Truth Table (Motor Driver Configured for H-bridge DC Motor)
Note: The HSOUT terminals are controlled by the OUT1 and OUT2 signals (Bit 14 and Bit 15 in the NORMAL input frame).
HSOUT is only available when DC motor is configured as Motor Driver C. (Set Bit 4 = 0 in CONFIG frame.)
Inputs
Output
Xdca
X
X
X
X
X
Xdcb
X
X
X
X
X
XPWM
X
X
X
X
X
OUTx
X
X
0
1
1
RST
X
0
1
1
1
I LIMIT Output
X
X
0
0
1
TSD
1
0
0
0
0
HSOUTx
OFF
OFF
OFF
ON
Limited
Table 22. Step Motor Driver Truth Table (33)
A or B Bit
X
X
X
0
0
0
1
1
1
A or B Bit
X
X
X
0
1
1
0
0
1
SPWMx Input
X
X
X
X
0
1
0
1
X
I LIMIT
X
X
0
0
0
0
0
0
RST
X
0
1
1
1
1
1
1
1
TSD
1
0
0
0
0
0
0
0
0
Output x
OFF
OFF
Limited or OFF
OFF
ON
OFF
OFF
ON
OFF
Output x
OFF
OFF
Limited or OFF
OFF
OFF
ON
ON
OFF
OFF
Notes
33. To reduce parasitic dissipation associated with the body diode, the counterphase is turned on for synchronous rectification.
34. The current limit sense function may be disabled when the outputs are disabled. Hence, the output will oscillate between the requested
state from the Truth Table and this state.
34921
Analog Integrated Circuit Device Data
32
Freescale Semiconductor
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