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DRV8412_11

更新时间： 2024-09-19 12:51:19
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德州仪器 - TI 驱动器
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31页 1307K
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Dual Full Bridge PWM Motor Driver

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DRV8412  
DRV8432  
www.ti.com  
SLES242D –DECEMBER 2009–REVISED JULY 2011  
Dual Full Bridge PWM Motor Driver  
Check for Samples: DRV8412, DRV8432  
The DRV8412/32 require two power supplies, one at  
1
FEATURES  
12 V for GVDD and VDD, and another up to 50 V for  
PVDD. The DRV8412/32 can operate at up to  
500-kHz switching frequency while still maintain  
precise control and high efficiency. They also have an  
innovative protection system safeguarding the device  
against a wide range of fault conditions that could  
damage the system. These safeguards are  
short-circuit protection, overcurrent protection,  
undervoltage protection, and two-stage thermal  
protection. The DRV8412/32 have a current-limiting  
circuit that prevents device shutdown during load  
transients such as motor start-up. A programmable  
overcurrent detector allows adjustable current limit  
and protection level to meet different motor  
requirements.  
•
High-Efficiency Power Stage (up to 97%) with  
Low RDS(on) MOSFETs (110 mΩ at TJ = 25°C)  
•
•
Operating Supply Voltage up to 52 V  
DRV8412 (power pad down): up to 2 x 3 A  
Continuous Output Current (2 x 6 A Peak) in  
Dual Full Bridge Mode or 6 A Continuous  
Current in Parallel Mode (12 A Peak)  
•
DRV8432 (power pad up): up to 2 x 7 A  
Continuous Output Current ( 2 x 12 A Peak) in  
Dual Full Bridge Mode or 14 A Continuous  
Current in Parallel Mode (24 A Peak)  
•
•
PWM Operating Frequency up to 500 kHz  
Integrated Self-Protection Circuits Including  
Undervoltage, Overtemperature, Overload, and  
Short Circuit  
The DRV8412/32 have unique independent supply  
and ground pins for each half bridge, which makes it  
possible to provide current measurement through  
external shunt resistor and support multiple motors  
with different power supply voltage requirements.  
•
•
•
•
Programmable Cycle-by-Cycle Current Limit  
Protection  
Independent Supply and Ground Pins for Each  
Half Bridge  
Simplified Application Diagram  
GVDD  
Intelligent Gate Drive and Cross Conduction  
Prevention  
PVDD  
GVDD_A  
BST_A  
GVDD_B  
OTW  
No External Snubber or Schottky Diode is  
Required  
FAULT  
PVDD_A  
OUT_A  
GND_A  
GND_B  
OUT_B  
PVDD_B  
BST_B  
PWM_A  
RESET_AB  
PWM_B  
M
APPLICATIONS  
•
•
Brushed DC and Stepper Motors  
OC_ADJ  
Controller  
GND  
Three Phase Permanent Magnet Synchronous  
Motors  
AGND  
VREG  
M3  
BST_C  
PVDD_C  
OUT_C  
GND_C  
GND_D  
OUT_D  
•
•
•
•
•
Robotic and Haptic Control System  
Actuators and Pumps  
Precision Instruments  
TEC Drivers  
M2  
M1  
M
PWM_C  
RESET_CD  
LED Lighting Drivers  
PVDD  
PWM_D  
VDD  
PVDD_D  
BST_D  
GVDD  
DESCRIPTION  
GVDD_C  
GVDD_D  
The DRV8412/32 are high performance, integrated  
dual full bridge motor drivers with an advanced  
protection system.  
Because of the low RDS(on) of the H-Bridge MOSFETs  
and intelligent gate drive design, the efficiency of  
these motor drivers can be up to 97%, which enables  
the use of smaller power supplies and heatsinks, and  
are good candidates for energy efficient applications.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2009–2011, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
 
 
 
 
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