Atmel Network Card ATA6829 User Manual

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

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