DRV3245A-Q1 Datasheet, PDF (1/6 Pages) Texas Instruments – DRV3245A-Q1 Three-Phase Automotive Gate Driver With Three Integrated Current Shunt Amplifiers

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DRV3245A-Q1
SLVSDJ8 – APRIL 2016
DRV3245A-Q1 Three-Phase Automotive Gate Driver With Three Integrated Current Shunt
Amplifiers
1 Features
•1 AEC-Q100 Qualified for Automotive Applications
• Ambient Operating Temperature Range:
– Temperature Grade 1: –40°C to 125°C
• 4.4-V to 45-V Operating Voltage
• 1.25-A and 1-A Peak Gate Drive Currents
• Programmable High- and Low-Side Slew-Rate
Control
• Charge-Pump Gate Driver for 100% Duty Cycle.
Reverse protection FET supply
• Three Integrated Current-Shunt Amplifiers
• 3-PWM or 6-PWM Input Control up to 20 kHz
• Single PWM-Mode Commutation Capability
• Supports Both 3.3-V and 5-V Digital Interface
• Serial Peripheral Interface (SPI) for Device
Settings and Fault Reporting
• Thermally-Enhanced 48-Pin HTQFP
• Protection Features:
– Fault Diagnostics
– DVDD, AVDD, PVDD voltage monitor
– Clock monitor
– SPI CRC
– Analog Built in self test
– Programmable Dead-Time Control
– MOSFET Shoot-Through Prevention
– MOSFET V_DS Overcurrent Monitors
– Gate-Driver Fault Detection
– Overtemperature Warning and Shutdown
2 Applications
• Three-Phase BLDC and PMSM Motors
• Automotive BLDC Applications
3 Description
The DRV3245A-Q1 device is a gate driver IC for
three-phase motor-drive applications. The device
provides three high-accuracy and temperature
compensated half-bridge drivers, each capable of
driving a high-side and low-side N-channel MOSFET.
A charge pump driver supports 100% duty cycle and
low-voltage operation for cold crank situations. The
device can tolerate load dump voltages up to 45 V.
The DRV3245A-Q1 device includes three
bidirectional current-shunt amplifiers for accurate low-
side current measurements that support variable gain
settings and an adjustable offset reference.
The gate driver uses automatic handshaking when
switching to prevent current shoot-through. The V_DS
of both the high-side and low-side MOSFETs is
accurately sensed to protect the external MOSFETs
from overcurrent conditions. The SPI provides
detailed fault reporting, diagnostics, and device
configurations such as gain options for the current
shunt amplifier, individual MOSFET overcurrent
detection, and gate-drive slew-rate control.
Device Information ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV3245A-Q1
HTQFP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
4.4 to 45 V
MCU
EN_GATE
PWM
SPI
nFAULT
ADC
DRV3245-Q1
3-Phase Gate
Driver
Protections
Diagnostics
3-Channel CS
Amplifiers
N-Channel
M
MOSFETs
Copyright © 2016, 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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.