DRV8704 Dual Brushed DC Gate Driver (PWM Ctrl) | TI.com

DRV8704
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Dual Brushed DC Gate Driver (PWM Ctrl)

Dual Brushed DC Gate Driver (PWM Ctrl) - DRV8704
Datasheet
 

Recommended alternative parts

  • DRV8701  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Single Brushed DC Motor Gate Driver (PH/EN, PWM Ctrl)

Description

The DRV8704 is a dual-brushed motor controller for industrial equipment applications. The device controls external N-channel MOSFETs configured as two H-bridges.

Motor current can be accurately controlled using adaptive blanking time and various current decay modes, including an automatic mixed decay mode.

A simple PWM interface allows easy interfacing to controller circuits. A SPI serial interface is used to program the device operation. Output current (torque), gate drive settings, and decay mode are all programmable through a SPI serial interface.

Internal shutdown functions are provided for overcurrent protection, short-circuit protection, gate driver faults, undervoltage lockout (UVLO), and overtemperature. Fault conditions are indicated by a FAULTn pin, and each fault condition is reported by a dedicated bit through SPI.

The DRV8704 is packaged in a PowerPAD™ 38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS & no Sb/Br).

Features

  • Pulse Width Modulation (PWM) Motor Driver
    • Drives External N-Channel MOSFETs
    • PWM Control Interface for Dual DC Motors
    • Supports 100% PWM Duty Cycle
  • 8-V to 52-V Operating Supply Voltage Range
  • Adjustable Gate Drive (4 Levels)
    • 50-mA to 200-mA Source Current
    • 100-mA to 400-mA Sink Current
  • Integrated PWM Current Regulation
  • Flexible Decay Modes
    • Automatic Mixed Decay Mode
    • Slow Decay
    • Fast Decay
    • Mixed Decay (Adjustable Percent Fast)
  • Highly Configurable SPI
  • Torque DAC to Digitally Scale Current
  • Low-Current Sleep Mode (65 µA)
  • 5-V, 10-mA LDO Regulator
  • Thermally-Enhanced Surface-Mount Package
    • 38-Pin HTSSOP (PowerPAD)
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Gate Driver Fault (PDF)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT)
    • Fault Diagnostics through SPI

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Parametrics

Compare all products in Brushed DC (BDC) motor drivers Email Download to Excel
Part number Order Number of full bridges Vs (Min) (V) Vs (Max) (V) Peak output current (A) RDS(ON) (HS + LS) (mOhms) Control mode Control interface Features Package size: mm2:W x L (PKG) Approx. price (US$) Rating
DRV8704 Order now 2     8     52     NULL     NULL     PWM     SPI
Hardware (GPIO)    
Current Regulation     38HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 38)     1.90 | 1ku     Catalog    
DRV8702-Q1 Order now 1     5.5     45     NULL     NULL     PWM
PH/EN
Independent 1/2-H PWM    
Hardware (GPIO)     Smart Gate Drive
Current Sense Amplifier
Current Regulation    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     1.12 | 1ku     Automotive    
DRV8702D-Q1 Order now 1/2     5.5     45     NULL     NULL     Independent 1/2-H PWM     Hardware (GPIO)     Smart Gate Drive
Current Sense Amplifier
Current Regulation    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     0.72 | 1ku     Automotive    
DRV8703-Q1 Order now 1     5.5     45     NULL     NULL     PWM
PH/EN
Independent 1/2-H PWM    
SPI
Hardware (GPIO)    
Smart Gate Drive
Current Sense Amplifier
Current Regulation    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     1.29 | 1ku     Automotive    
DRV8703D-Q1 Order now 1/2     5.5     45     NULL     NULL     Independent 1/2-H PWM     SPI
Hardware (GPIO)    
Smart Gate Drive
Current Sense Amplifier
Current Regulation    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     0.78 | 1ku     Automotive