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參數(shù)資料
| 型號： | MM908E626R2 |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Integrated Stepper Motor Driver with Embedded MCU and LIN Serial Communication |
| 中文描述： | 集成的步進電機驅(qū)動器，帶有嵌入式微控制器和LIN串行通信 |
| 文件頁數(shù)： | 23/32頁 |
| 文件大小： | 303K |
| 代理商： | MM908E626R2 |
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
908E626
23
Figure 9. Half-Bridge Push-Pull Output Driver
Half-Bridge Control
Each output MOSFET can be controlled individually. The
general enable of the circuitry is done by setting PSON in the
System Control Register (SYSCTL). HBx_L and HBx_H form
one half-bridge. It is not possible to switch on both MOSFETs in
one half-bridge at the same time. If both bits are set, the high-
side MOSFET has a higher priority.
To avoid both MOSFETs (high side and low side) of one half-
bridge being on at the same time, a break-before-make circuit
exists.
Switching the high-side MOSFET on is inhibited as long
as the potential between gate and V
SS
is not below a certain
threshold. Switching the low-side MOSFET on is blocked as
long as the potential between gate and source of the high-side
MOSFET did not fall below a certain threshold.
Half-Bridge Output Register (HBOUT)
HBx_L—Low-Side On/Off Bits
These read/write bits turn on the low-side MOSFETs. Reset
clears the HBx_L bits.
1 = Low-side MOSFET turned on for half-bridge output x.
0 = Low-side MOSFET turned off for half-bridge output x.
HBx_H—High-Side On/Off Bits
These read/write bits turn on the high-side MOSFETs. Reset
clears the HBx_H bits.
1 = High-side MOSFET turned on for half-bridge output x.
0 = High-side MOSFET turned on for half-bridge output x.
High-Side Driver
Charge Pump,
Overtemperature Protection,
Overcurrent Protection
Low-Side Driver
Current Recopy,
Current Limitation,
Overcurrent Protection
Control
On/Off
Status
On/Off
Status
Current
Limit
HBx
VSUP
GND
BEMF
Register Name and Address: HBOUT - $01
Bit7
6
5
4
3
2
1
Bit0
Read
HB4
_
H HB4
_
L HB3
_
H HB3
_
L HB2
_
H HB2
_
L HB1
_
H HB1
_
L
Write
Reset
0
0
0
0
0
0
0
0
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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