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参数资料
| 型号： | DRV8825PWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 5/22页 |
| 文件大小： | 628K |
| 代理商： | DRV8825PWP |
SLVSA73C
– APRIL 2010 – REVISED MAY 2011
Table 3. Relative Current and Step Directions (continued)
FULL
WINDING
ELECTRICAL
1/32 STEP 1/16 STEP
1/8 STEP
1/4 STEP
1/2 STEP
STEP
CURRENT
ANGLE
70%
A
B
104
34%
–94%
290
105
53
27
14
38%
–92%
293
106
43%
–90%
295
107
54
47%
–88%
298
108
51%
–86%
301
109
55
28
56%
–83%
304
110
60%
–80%
307
111
56
63%
–77%
309
112
67%
–74%
312
113
57
29
15
8
4
71%
–71%
315
114
74%
–67%
318
115
58
77%
–63%
321
116
80%
–60%
323
117
59
30
83%
–56%
326
118
86%
–51%
329
119
60
88%
–47%
332
120
90%
–43%
335
121
61
31
16
92%
–38%
338
122
94%
–34%
340
123
62
96%
–29%
343
124
97%
–24%
346
125
63
32
98%
–20%
349
126
99%
–15%
352
127
64
100%
–10%
354
128
100%
–5%
357
nRESET, nENBLE and nSLEEP Operation
The nRESET pin, when driven active low, resets internal logic, and resets the step table to the home position. It
also disables the H-bridge drivers. The STEP input is ignored while nRESET is active.
The nENBL pin is used to control the output drivers and enable/disable operation of the indexer. When nENBL is
low, the output H-bridges are enabled, and rising edges on the STEP pin are recognized. When nENBL is high,
the H-bridges are disabled, the outputs are in a high-impedance state, and the STEP input is ignored.
Driving nSLEEP low will put the device into a low power sleep state. In this state, the H-bridges are disabled, the
gate drive charge pump is stopped, the V3P3OUT regulator is disabled, and all internal clocks are stopped. In
this state all inputs are ignored until nSLEEP returns inactive high. When returning from sleep mode, some time
(approximately 1 ms) needs to pass before applying a STEP input, to allow the internal circuitry to stabilize. Note
that nRESET and nSLEEP have internal pulldown resistors of approximately 100 k
Ω. These signals need to be
driven to logic high for device operation.
Protection Circuits
The DRV8825 is fully protected against undervoltage, overcurrent and overtemperature events.
Overcurrent Protection (OCP)
An analog current limit circuit on each FET limits the current through the FET by removing the gate drive. If this
analog current limit persists for longer than the OCP time, all FETs in the H-bridge will be disabled and the
nFAULT pin will be driven low. The device will remain disabled until either nRESET pin is applied, or VM is
removed and re-applied.
Copyright
2010–2011, Texas Instruments Incorporated
13
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| DRV8828PWPR | 功能描述:马达/运动/点火控制器和驱动器 H-Bridge motor controller IC RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| DRV8829EVM | 功能描述:电源管理IC开发工具 DRV8829 Eval mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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