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DRV8874PWPRG4 bảng dữ liệu(PDF) 27 Page - Texas Instruments

tên linh kiện DRV8874PWPRG4
Giải thích chi tiết về linh kiện  DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation
PDF  42 Pages
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nhà sản xuất  TI2 [Texas Instruments]
Trang chủ  https://www.ti.com
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DRV8874PWPRG4 bảng dữ liệu(HTML) 27 Page - Texas Instruments

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DRV887x
EN/IN1
1
PH/IN2
2
nSLEEP
3
nFAULT
4
VREF
5
IPROPI
6
IMODE
7
OUT1
8
PMODE
16
GND
15
CPL
14
CPH
13
VCP
12
VM
11
OUT2
10
PGND
9
Thermal
Pad
BDC
Controller
PWM
PWM
I/O
I/O
ADC
0.1 …F
C
Bulk
V
M
0.1 …F
0.022 …F
10 k
V
CC
R
IPROPI
V
CC
V
CC
X
BDC
V
M
V
M
27
DRV8874
www.ti.com
SLVSF66A – AUGUST 2019 – REVISED DECEMBER 2019
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
Chan. 1 = OUT1
Chan. 2 = OUT2
Chan. 3 = EN/IN1
Chan. 4 = IOUT
Figure 31. Driver PWM Operation With Current Chopping
Chan. 1 = OUT1
Chan. 2 = OUT2
Chan. 3 = EN/IN1
Chan. 4 = IOUT
Figure 32. Driver Full On Operation With Current Chopping
8.2.2 Alternative Application
In the alternative application example, the device is configured to drive a unidirectional current through two
external loads (such as two brushed DC motors) using a dual half-bridge configuration. The duty cycle of each
half-bridge is controlled with a PWM resource from the external controller to the EN/IN1 and PH/IN2 pins. The
device is configured for the independent half-bridge control mode by leaving the PMODE pin floating. Since the
current regulation scheme is disabled in the independent half-bridge control mode, the VREF pin is tied to VCC.
The combined load current is monitored with an ADC from the controller to detect the voltage across RIPROPI.
Figure 33. Typical Application Schematic



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