DRV8702D-Q1 Datasheet, PDF (1/66 Pages) Texas Instruments – Automotive Half-Bridge Gate Driver

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
DRV8702D-Q1, DRV8703D-Q1
SLVSDX8 – MARCH 2017
DRV870xD-Q1 Automotive Half-Bridge Gate Driver
1 Features
•1 AEC-Q100 Qualified for Automotive Applications
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
• Single Half-Bridge Gate Driver
– Drives Two External N-Channel MOSFETs
– Supports 100% PWM Duty Cycle
• 5.5- to 45-V Operating Supply-Voltage Range
• PWM Control Interface
• Serial Interface for Configuration (DRV8703D-Q1)
• Adjustable Gate Drive For Slew-Rate Control
• Supports 1.8-V, 3.3-V, and 5-V logic inputs
• Current-Shunt Amplifier
• Integrated PWM Current Regulation
• Low-Power Sleep Mode
• Small Package and Footprint
– 32-Pin VQFN
– 5 mm × 5 mm
– Wettable Flanks Package
• Protection Features
– Supply Undervoltage Lockout (UVLO)
– Charge-Pump Undervoltage (CPUV) Lockout
– Overcurrent Protection (OCP)
– Gate-Driver Fault (GDF)
– Thermal Shutdown (TSD)
– Watchdog Timer (DRV8703D-Q1)
– Fault-Condition Output (nFAULT)
2 Applications
• Fuel Pumps
• Unidirectional Brushed DC Motors
• Relays or Solenoids
• Unipolar Loads
3 Description
The DRV870xD-Q1 family of devices is a half-bridge
gate driver that uses two external N-channel
MOSFETs targeted to drive unidirectional brushed-
DC motors or solenoid loads.
The PWM interface allows simple interfacing to
controller circuits. An internal sense amplifier
provides adjustable current control. The gate driver
includes circuitry to regulate the winding current using
fixed off-time PWM current chopping.
The DRV870xD-Q1 family of devices drives both
high-side and low-side FETs with a 10.5-V V_GS gate
drive. The gate-drive current for all external FETs is
configurable with a single external resistor or through
the serial peripheral interface (SPI).
A low-power sleep mode is provided which shuts
down internal circuitry to achieve a very-low
quiescent-current draw.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8702D-Q1
DRV8703D-Q1
VQFN (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
5.5 to 45 V
PH/EN or PWM
DRV870xD-Q1
nSLEEP
VREF
Gate
Half-Bridge Gate Driver
Drive
Half-
Bridge
M
Sense Output
nFAULT
Shunt Amplifier
Current Regulation
Current
Sense
Protection
High-side
gate drive
current
ISTRONG
Gate-Drive Current
t(DRIVE)
IHOLD
IDRIVE(SNK)
ISTRONG
High-side
VGS
Low-side
gate drive
current
IHOLD
IDRIVE(SNK)
Low-side
VGS
ISTRONG
t(DRIVE)
IHOLD
Copyright © 2017, Texas Instruments Incorporated
1
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. PRODUCTION DATA.