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DRV8714-Q1_V01

更新时间： 2024-11-27 02:50:11
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德州仪器 - TI 栅
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144页 2768K
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DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers With Wide Common Mode Current Sense Amplifiers

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DRV8714-Q1,DRV8718-Q1
SLVSEA2 – AUGUST 2020  
DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers  
With Wide Common Mode Current Sense Amplifiers  
1 Features  
3 Description  
•
AEC-Q100 qualified for automotive applications:  
– Temperature grade 1: –40°C to +125°C, TA  
Multi-channel half-bridge gate driver  
The DRV871x-Q1 family of devices are highly  
integrated, multi-channel gate drivers intended for  
driving multiple motors or loads. The devices integrate  
either 4 (DRV8714-Q1) or 8 (DRV8718-Q1) half-  
bridge gate drivers, driver power supplies, current  
shunt amplifiers, and protection monitors reducing  
total system complexity, size, and cost.  
•
– Pin to pin 4 and 8 half-bridge driver variants  
– 4.9-V to 37-V (40-V abs. max) operating range  
– 4 PWM inputs with output mapping  
– Tripler charge pump for 100% PWM  
– Half-bridge, H-bridge, and SPI control modes  
Smart multi-stage gate drive architecture  
– Adjustable slew rate control  
– Adaptive propagation delay control  
– 64-µA to 62-mA peak source current output  
– 64-µA to 62-mA peak sink current output  
– Integrated dead-time handshaking  
2x wide common mode current shunt amplifiers  
– Supports inline, high-side, or low-side  
– Adjustable gain settings (10, 20, 40, 80 V/V)  
Multiple interface options available  
– SPI: Detailed configuration and diagnostics  
– H/W: Simplified control and less MCU pins  
Compact VQFN package with wettable flanks  
Integrated protection features  
A smart gate drive architecture optimizes dead time to  
prevent shoot-through conditions, controls slew rate to  
decrease electromagnetic interference (EMI), and  
adaptively optimizes propagation delay for optimal  
driver performance.  
•
Input modes are provided for independent half-bridge  
or H-bridge control. Four PWM inputs can be  
multiplexed between the different drivers in  
combination with SPI control.  
•
•
Wide common mode shunt amplifiers provide inline  
current sensing to continuously measure motor  
current even during recirculating windows. The  
amplifier can be used in low-side or high-side sense  
configurations if inline sensing is not required.  
•
•
The devices provide an array of protection features to  
ensure robust system operation. These include under  
and overvoltage monitors, VDS overcurrent and VGS  
gate fault monitors for the external MOSFETs, offline  
open load and short circuit diagnostics, and internal  
thermal warning and shutdown protection.  
– Dedicated driver disable pin (DRVOFF)  
– Low IQ, sleep mode motor braking (BRAKE)  
– Supply and regulator voltage monitors  
– MOSFET VDS overcurrent monitors  
– MOSFET VGS gate fault monitors  
Device Information (1)  
– Charge pump for reverse polarity MOSFET  
– Offline open load and short circuit diagnostics  
– Device thermal warning and shutdown  
– Window watchdog timer.  
PART NUMBER  
DRV8714-Q1  
PACKAGE  
BODY SIZE (NOM)  
6.00 mm x 6.00 mm  
8.00 mm x 8.00 mm  
8.00 mm x 8.00 mm  
VQFN (40)  
VQFN (56)  
VQFN (56)  
DRV8718-Q1  
– Fault condition interrupt pin (nFAULT)  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
2 Applications  
VBAT  
•
•
•
•
•
•
•
Automotive brushed DC motors  
Power seat modules  
Power trunk and lift gate  
Door module  
Body control modules  
Power sunroof  
DRV871x-Q1  
PWM  
4-Channel  
8-Channel  
SPI  
DRVOFF/nFLT  
Current Sense  
Multi-Channel  
Smart Gate Driver  
Inline Amps  
Protection  
Transmission and engine control modules  
Simple Block Diagram  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change  
without notice.  
 
 
 
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