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

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.
 Dual Triple DMOS Output Drivers
with Serial Input and PWM Control
T6819, ATA6829, ATA6831
AuTOMOTIve & ConTrol
n Supply Voltage up to 40V
n T6819/ATA6829: 3 High-side and 3 low-side
Drivers Usable as Single outputs or Half Bridges
n 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
Features
G
N
D
VS
OUT1 OUT2 OUT3
VCC
INH
DI
DO
CS
CLK
PWM
ATA6831
Watchdog
Micro-
controller
Voltage
Regulator
16-bit SPI
Charge
Pump
Protection:
Short circuit
Open Load
Overtemperature
Undervoltage
Power-on
Reset
Logic Control
High-side
Switch
Low-side
Switch
Low-side
Switch
Low-side
Switch
High-side
Switch
High-side
Switch
G
N
D
VS
OUT1L OUT2L OUT3L
OUT1H OUT2H OUT3H
VCC
PWM
T6819, ATA6829
Protection:
Short circuit
Open Load
Overtemperature
Undervoltage
Charge
Pump
Power-on
Reset
DI
DO
CS
CLK
16-bit SPI
Low-side
Switch
Low-side
Switch
Low-side
Switch
Logic Control
Watchdog
Micro-
controller
Voltage
Regulator
High-side
Switch
High-side
Switch
High-side
Switch
Benefits
n no Shoot-through Current
n Selective overtemperature Prewarning and
Protection for Each Switch
n PWM Capability for Each output Controlled by
External PWM Signal
n ATA6831: Enhanced PWM Frequency of
up to 25 kHz for noise Elimination
n Capability to Control 3-phase Motors
Applications
n Various Automotive and Industrial Applications
Such as Flap Control or light Dimming
n Switches all Kinds of loads Such as
DC Motors, Bulbs, resistors and Inductors
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.