Atmel Dual Triple DMOS Output Drivers with Serial Input and PWM Control ATA6829 Product Manual

Dual Triple DMOS Output Drivers

with Serial Input and PWM Control
T6819, ATA6829, ATA6831
The T6819/ATA6829/ATA6831 are fully protected driver interfaces designed in smart power BCDMOS tech-
nology. They are used to control different loads by a microcontroller in automotive and industrial applications.
Each driver of the T6819/ATA6829 is freely configurable and can be PWM controlled separately from a standard
serial data interface. The power stages of the ATA6831 are combined to 3 half bridges. Due to the ATA6831's
enhanced PWM signal of up to 25 kHz, the DC motor control is carried out without any audible noise caused
by the PWM signal. All kinds of loads such as bulbs, resistors, and inductors can be combined.
OUT3H OUT2H
Watchdog
High-side High-side
Switch Switch
PWM
Micro-
controller
DI
16-bit SPI
DO
CS
CLK
Low-side Low-side
Switch Switch
Voltage
Regulator
VCC
OUT3L OUT2L
Features
Supply Voltage up to 40V
n
T6819/ATA6829: 3 High-side and 3 low-side
n
Drivers Usable as Single outputs or Half Bridges
ATA6831: 3 Half Bridges
n
output Currents up to 1A/1.5A
n
Various Diagnostic Functions
n
SPI up to 2 MHz Clock Frequency
n
So16/QFn18 Power Package with Heat Slug
n
Applications
Various Automotive and Industrial Applications
n
Such as Flap Control or light Dimming
Switches all Kinds of loads Such as
n
DC Motors, Bulbs, resistors and Inductors
OUT1H
T6819, ATA6829
High-side
Charge
Power-on
Switch
Pump
Reset
Logic Control
Protection:
Short circuit
Low-side
Open Load
Switch
Overtemperature
Undervoltage
OUT1L
Watchdog
INH
DI
16-bit SPI
DO
CS
Micro-
CLK
controller
PWM
High-side High-side
Switch Switch
Low-side Low-side
Switch Switch
Voltage
Regulator
VCC
OUT3 OUT2
Benefits
no Shoot-through Current
n
Selective overtemperature Prewarning and
n
Protection for Each Switch
PWM Capability for Each output Controlled by
n
External PWM Signal
ATA6831: Enhanced PWM Frequency of
n
up to 25 kHz for noise Elimination
Capability to Control 3-phase Motors
n
DC Motor Control Systems
The IC design especially supports the application
of H-bridges to drive brush/brushless DC motors.
Protection is guaranteed regarding short-circuit
conditions, overtemperature and undervoltage.
AuTOMOTIve & ConTrol
ATA6831
Logic Control
Charge
Power-on
High-side
Pump
Reset
Switch
Protection:
Short circuit
Low-side
Open Load
Switch
Overtemperature
Undervoltage
OUT1