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VNH5250AS-E Datasheet PDF - STMicroelectronics

Part Number VNH5250AS-E
Description Automotive fully integrated H-bridge motor driver
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 

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VNH5250AS-E datasheet, circuit
VNH5250AS-E
Automotive fully integrated H-bridge motor driver
SO-16N
GAPGCFT00648
Features
Type
VNH5250AS-E
RDS(on)
250 mΩ typ
(per leg)
Iout VCCmax
8 A 41 V
Output current: 8 A
3 V CMOS-compatible inputs
Undervoltage shutdown
Overvoltage clamp
Thermal shutdown
Cross-conduction protection
Current and power limitation
Very low standby power consumption
Protection against loss of ground and loss of
VCC
Current sense output proportional to motor
current
Output protected against short to ground and
short to VCC
Package: ECOPACK®
Datasheet - target specification
Description
The VNH5250AS-E is a full bridge motor driver
intended for a wide range of automotive
applications. The device incorporates a dual
monolithic high-side driver and two low-side
switches.
Both switches are designed using
STMicroelectronics’ well known and proven
proprietary VIPower® M0 technology that allows
to efficiently integrate on the same die a true
Power MOSFET with an intelligent
signal/protection circuitry. The three dies are
assembled in SO-16N package on electrically
isolated leadframes. This package, specifically
designed for the harsh automotive environment
offers improved thermal performance thanks to
exposed die pads. Moreover, its fully symmetrical
mechanical design allows superior
manufacturability at board level. The input signals
INA and INB can directly interface to the
microcontroller to select the motor direction and
the brake condition. The DIAGA/ENA or
DIAGB/ENB, when connected to an external pull-
up resistor, enables one leg of the bridge. Each
DIAGA/ENA provides a feedback digital diagnostic
signal as well. The normal operating condition is
explained in the truth table. The CS pin allows to
monitor the motor current by delivering a current
proportional to its value.
Package
SO-16N
Table 1. Device summary
Order codes
Tube
VNH5250AS-E
Tape and reel
VNH5250ASTR-E
September 2013
DocID025102 Rev 2
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
1/18
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VNH5250AS-E equivalent
VNH5250AS-E
Block diagram and pin description
1 Block diagram and pin description
Figure 1. Block diagram
VCC
FAULT
DETECTION
LSA_OVERTEMPERATURE
HSA_OVERTEMPERATURE
UV
POWER
LIMITATION
LSB_OVERTEMPERATURE
HSB_OVERTEMPERATURE
OUTA
CLAMP HSA
HSA
DRIVER
HSA
LOGIC
CURRENT
LIMITATION A
CLAMP LSA
1/K
LSA
DRIVER
LSA
OVERLOAD
DETECTOR A
GNDA
DIAGA/ENA INA CS
CLAMP HSB
DRIVER
HSB
HSB
CURRENT
LIMITATION B
1/K
CLAMP LSB
OUTB
DRIVER
LSB
OVERLOAD
DETECTOR B
LSB
INB DIAGB/ENB
GNDB
GAPGCFT00647
Table 2. Block description
Name
Description
Logic control
Allows the turn-on and the turn-off of the high-side and the
low-side switches according to the truth table.
Undervoltage
Shuts down the device for battery voltage lower than 5 V.
High-side and low-side clamp voltage
Protect the high-side and the low-side switches from the
high voltage on the battery line.
High-side and low-side driver
Current limitation
Drive the gate of the concerned switch to allow a proper
RDS(on) for the leg of the bridge.
Limits the motor current in case of short circuit.
High-side and low-side overtemperature
protection
In case of short-circuit with the increase of the junction
temperature, it shuts down the concerned driver to prevent
degradation and to protect the die.
Low-side overload detector
Detects when low-side current exceeds shutdown current
and latches off the concerned low-side.
DocID025102 Rev 2
5/18
17

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Information Total 18 Pages
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