VNH5019A-E Datasheet, PDF (1/37 Pages) STMicroelectronics – Automotive fully integrated H-bridge motor driver

VNH5019A-E
Automotive fully integrated
H-bridge motor driver
Features
Type
VNH5019A-E
R_DS(on)
18 mΩ typ
(per leg)
I_out
30 A
V_ccmax
41 V
■ ECOPACK^®: lead free and RoHS compliant
■ Automotive Grade: compliance with AEC
guidelines
■ Output current: 30 A
■ 3 V CMOS compatible inputs
■ Undervoltage and overvoltage shutdown
■ High-side and low-side thermal shutdown
■ Cross-conduction protection
■ Current limitation
■ Very low standby power consumption
■ PWM operation up to 20 khz
■ Protection against:
– Loss of ground and loss of V_CC
■ Current sense output proportional to motor
current
■ Charge pump output for reverse polarity
protection
■ Output protected against short to ground and
short to V_CC
Description
The VHN5019A-E is a full bridge motor driver
intended for a wide range of automotive
applications. The device incorporates a dual
monolithic high-side drivers and two low-side
switches. The high-side driver switch is designed
using STMicroelectronics’ well known and proven
proprietary VIPower^® M0 technology that allows
to efficiently integrate on the same die a true
MultiPowerSO-30™
Power MOSFET with an intelligent
signal/protection circuit.
The three dice are assembled in
MultiPowerSO-30 package on electrically isolated
lead-frames. This package, specifically designed
for the harsh automotive environment offers
improved thermal performance thanks to exposed
die pads. The input signals IN_A and IN_B can
directly interface to the microcontroller to select
the motor direction and the brake condition.
The DIAG_A/EN_A or DIAG_B/EN_B, when connected
to an external pull-up resistor, enable one leg of
the bridge. They also provide a feedback digital
diagnostic signal. The CS pin allows to monitor
the motor current by delivering a current
proportional to its value when CS_DIS pin is
driven low or left open. The PWM, up to 20 KHz,
lets us to control the speed of the motor in all
possible conditions. In all cases, a low-level state
on the PWM pin turns-off both the LS_A and LS_B
switches. When PWM rises to a high-level, LS_A or
LS_B turn-on again depending on the input pin
state.
Output current limitation and thermal shutdown
protects the concerned high-side in short to
ground condition.
The short to battery condition is revealed by the
overload detector or by thermal shutdown that
latches off the relevant low-side.
Active V_CC pin voltage clamp protects the device
against low energy spikes in all configurations for
the motor.
CP pin provides the necessary gate drive for an
external n-channel PowerMOS used for reverse
polarity protection.
December 2011
Doc ID 15701 Rev 8
1/37
www.st.com
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