DRV8874 具有集成电流检测和电流检测输出的 6A 刷式直流电机驱动器 | 德州仪器 TI.com.cn

DRV8874
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
具有集成电流检测和电流检测输出的 6A 刷式直流电机驱动器

具有集成电流检测和电流检测输出的 6A 刷式直流电机驱动器 - DRV8874
数据表
 

描述

The DRV8874 is an integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. The family of devices come in pin-to-pin RDS(on) variants to support different loads with minimal design changes.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the external voltage reference pin, VREF, these devices can regulate the motor current during start-up and high-load events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, charge pump undervoltage, output overcurrent, and device overtemperature. Fault conditions are indicated on nFAULT.

View our full portfolio of brushed motor drivers on ti.com.

特性

  • N-channel H-bridge motor driver
    • Drives one bidirectional brushed DC motor
    • Two unidirectional brushed DC motors
    • Other resistive and inductive loads
  • 4.5-V to 37-V operating supply voltage range
  • Pin to pin RDS(on) variants
    • DRV8874: 200-mΩ (High-Side + Low-Side)
    • DRV8876: 700-mΩ (High-Side + Low-Side)
  • High output current capability
    • DRV8874: 6-A Peak
    • DRV8876: 3.5-A Peak
  • Integrated current sensing and regulation
  • Proportional current output (IPROPI)
  • Selectable current regulation (IMODE)
    • Cycle-by-cycle or fixed off time
  • Selectable input control modes (PMODE)
    • PH/EN and PWM H-bridge control modes
    • Independent half-bridge control mode
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Ultra low-power sleep mode
    • <1-µA @ VVM = 24-V, TJ = 25°C
  • Spread spectrum clocking for low electromagnetic interference (EMI)
  • Integrated protection features
    • Undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
      • Automatic retry or outputs latched off (IMODE)
    • Thermal shutdown (TSD)
    • Automatic fault recovery
    • Fault indicator pin (nFAULT)

All trademarks are the property of their respective owners.

参数

与其它产品相比 刷式直流电机驱动器 邮件 下载到电子表格中
Part number 立即下单 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
DRV8874 立即下单 1     4.5     37     6     200     Independent 1/2-Bridge
PH/EN
PWM    
Hardware (GPIO)     Current Sense Amplifier
Integrated Current Sensing    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     1.25 | 1ku     Catalog    
DRV8801 立即下单 3     8     38     2.8     830     PH/EN     Hardware (GPIO)     Current Sense Amplifier     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
0.99 | 1ku     Catalog    
DRV8870 立即下单 1     6.5     45     3.7     565     PWM     Hardware (GPIO)     Current Regulation     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     0.81 | 1ku     Catalog    
DRV8873 立即下单 1     4.5     37     10     150     Independent 1/2-Bridge
PH/EN
PWM    
Hardware (GPIO)
SPI    
Current Sense Amplifier
Integrated Current Sensing
Open-Load Detection    
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)       Catalog    
DRV8876 立即下单 1     4.5     37     3.5     700     Independent 1/2-Bridge
PH/EN
PWM    
Hardware (GPIO)     Current Sense Amplifier
Integrated Current Sensing    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
0.70 | 1ku     Catalog    
DRV8876N 立即下单 1     4.5     37     3.5     700     Independent 1/2-Bridge
PWM    
Hardware (GPIO)       16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)       Catalog