ATA6832_08 ATMEL [ATMEL Corporation], ATA6832_08 Datasheet

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ATA6832_08

Manufacturer Part Number
ATA6832_08
Description
High Temperature Triple Half-bridge Driver with SPI and PWM
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
1. Description
The ATA6832 is a fully protected driver IC specially designed for high temperature
applications. In mechatronic solutions, for example turbo charger or exhaust gas recir-
culation systems, many flaps have to be controlled by DC motor driver ICs which are
located very close to the hot engine or actuator where ambient temperatures up to
150°C are usual. Due to the advantages of SOI technology junction temperatures up
to 200°C are allowed. This enables new cost effective board design possibilities to
achieve complex mechatronic solutions.
The ATA6832 is a triple half-bridge driver to control up to 3 different loads by a micro-
controller in automotive and industrial applications. Each of the 3 high-side and 3
low-side drivers is capable of driving currents up to 1.0A. Due to the enhanced PWM
signal (up to 25 kHz) it is possible to generate a smooth control of, for example, a DC
motor without any noise. The drivers are internally connected to form 3 half-bridges
and can be controlled separately from a standard serial data interface, enabling all
kinds of loads, such as bulbs, resistors, capacitors and inductors, to be combined.
The IC design especially supports the application of H-bridges to drive DC motors.
Protection is guaranteed with respect to short-circuit conditions, overtemperature and
undervoltage. Various diagnostic functions and a very low quiescent current in
standby mode enable a wide range of applications. Automotive qualification (protec-
tion against conducted interferences, EMC protection and 2-kV ESD protection) gives
added value and enhanced quality for exacting requirements of automotive
applications.
Supply Voltage up to 40V
R
Up to 1.0A Output Current
Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers
Capable of Switching Loads such as DC Motors, Bulbs, Resistors, Capacitors, and
Inductors
PWM Capability up to 25 kHz for Each High-side Output Controlled by External PWM
Signal
No Shoot-through Current
Outputs Short-circuit Protected
Selective Overtemperature Protection for Each Switch and Overtemperature
Prewarning
Undervoltage Protection
Various Diagnostic Functions such as Shorted Output, Open Load, Overtemperature
and Power-supply Fail Detection
Serial Data Interface, Daisy Chain Capable, up to 2 MHz Clock Frequency
QFN18 Package
DSon
Typically 0.8 at 25°C, Maximum 1.8 at 200°C
High
Temperature
Triple
Half-bridge
Driver with SPI
and PWM
ATA6832
4951C–AUTO–02/08

Related parts for ATA6832_08

ATA6832_08 Summary of contents

Page 1

Features • Supply Voltage up to 40V • R Typically 0.8 at 25°C, Maximum 1.8 at 200°C DSon • 1.0A Output Current • Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers • Capable of Switching ...

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Figure 1-1. Block Diagram Input register Ouput register CLK Fault DO detector 7 PWM 6 Fault detector 1 OUT3S ATA6832 ...

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Pin Configuration Figure 2-1. Pinning QFN24 Table 2-1. Pin Description Pin Symbol Function 1 OUT3S Used only for final testing connected to OUT3F Half-bridge output 3; formed by internally connecting power MOS high-side switch 3 and low-side ...

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Functional Description 3.1 Serial Interface Data transfer starts with the falling edge of the CS signal. Data must appear at DI synchronized to CLK and is accepted on the falling edge of the CLK signal. The LSB (bit 0, ...

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Table 3-2. Bit 4951C–AUTO–02/08 Output Data Protocol Output (Status) Register Function TP Temperature prewarning: high = warning Normal operation: high = output is on, ...

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After power-on reset, the input register has the following status: Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 SI OCS OLD PH3 PL3 The following patterns are used to enable internal test modes of ...

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Overtemperature Protection If the junction temperature of one or more output stages exceeds the thermal prewarning thresh- old, T jPW set temperature falls below the thermal prewarning threshold, T bit can be read without transferring a complete 16-bit data ...

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Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated ...

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Noise and Surge Immunity Parameters Conducted interferences Interference suppression ESD (Human Body Model) CDM (Charge Device Model) Note: 1. Test pulse 40V smax 8. Electrical Characteristics 7.5V < V < 40V; 4.75V < V < 5.25V; ...

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Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40° GND pins. No. Parameters Test Conditions 3.5 Thermal shutdown on Thermal shutdown 3.6 hysteresis Ratio thermal shutdown 3.7 off/thermal ...

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Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40° GND pins. No. Parameters Test Conditions Input register bit 13 Low-side open load 4.13 (OLD) = low, output off ...

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Electrical Characteristics (Continued) 7.5V < V < 40V; 4.75V < V < 5.25V; INH = High; –40° GND pins. No. Parameters Test Conditions Leakage current V CS 6.3 (tri-state) 0V < Inhibit Input – ...

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Figure 9-1. Serial Interface Timing with Chart Number CS 4 CLK 3 DI CLK DO Inputs DI, CLK, CS: High level = 0.7 Output DO: High level = 0.8 4951C–AUTO–02/ ...

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Application Circuit Figure 10-1. Application Circuit V CC U5021M Watchdog DI 4 CLK 5 CS Micro- 3 controller DO 7 PWM 10.1 Application Notes • Connect the blocking capacitors at V GND pins. • Recommended value ...

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Ordering Information Extended Type Number ATA6832-PIQW 12. Package Information Package: VQFN_4 x 4_18L Exposed pad 2.7 x 3.175 Dimensions in mm Not indicated tolerances ±0.05 Pin 1 identification Drawing-No.: 6.543-5133.01-4 Issue: 1; 26.04.07 13. Revision History Please note that ...

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Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to ...

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