ata6832c ATMEL Corporation, ata6832c Datasheet

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ata6832c

Manufacturer Part Number
ata6832c
Description
High Temperature Triple Half-bridge Driver With Spi And Pwm
Manufacturer
ATMEL Corporation
Datasheet
Features
1. Description
The Atmel
perature applications. In mechatronic solutions, for example turbo charger or exhaust
gas recirculation 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 tempera-
tures 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 Atmel ATA6832C is a triple half-bridge driver to control up to three different loads
by a microcontroller in automotive and industrial applications. Each of the three
high-side and three low-side drivers is capable of driving currents up to 1.0A. Due to
the enhanced PWM signal (up to 25kHz) it is possible to generate a smooth control of,
for example, a DC motor without any noise. The drivers are internally connected to
form three half-bridges and can be controlled separately from a standard serial data
interface, enabling all kinds of loads, such as bulbs, resistors, capacitors and induc-
tors, 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 1.5-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 25kHz 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 2MHz Clock Frequency
QFN18 Package
DSon
Typically 0.8Ω at 25°C, Maximum 1.8Ω at 200°C
®
ATA6832C is a fully protected driver IC specially designed for high tem-
High
Temperature
Triple
Half-bridge
Driver with SPI
and PWM
Atmel
ATA6832C
Preliminary
9216B–AUTO–06/11

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ata6832c Summary of contents

Page 1

... This enables new cost effective board design possibilities to achieve complex mechatronic solutions. The Atmel ATA6832C is a triple half-bridge driver to control up to three different loads by a microcontroller in automotive and industrial applications. Each of the three high-side and three low-side drivers is capable of driving currents up to 1.0A. Due to the enhanced PWM signal (up to 25kHz possible to generate a smooth control of, for example motor without any noise ...

Page 2

... Figure 1-1. Block Diagram Input register Ouput register CLK Fault DO detector 7 PWM 6 Fault detector 1 OUT3S Atmel ATA6832C [Preliminary Serial interface O n ...

Page 3

... OUT1S Used only for final testing connected to OUT1F 17 PGND1 Power ground OUT1 18 PGND3 Power ground OUT3 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary OUT3S 1 12 OUT2F OUT3F 2 11 VS2 ...

Page 4

... CLK DO TP S1L S1H Table 3-1. Bit Atmel ATA6832C [Preliminary] 4 LS2 HS2 LS3 HS3 nPL! PH1 S2L S2H S3L S3H Input Data Protocol Input Register Function Status register reset (high = reset; the bits PSF and OVL in the output ...

Page 5

... 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary] Output Data Protocol Output (Status) Register Function TP Temperature prewarning: high = warning Normal operation: high = output is on, low = output is off Open-load detection: high = open load, low = no open load Status LS1 (correct load condition is detected if the corresponding output is switched off) ...

Page 6

... If the OUTx is not connected, a Low-side open load is indicated, because the low-side current sink is higher than the high-side current source, see open load detection current ratio I Out1-3L Switching on an output stage with the OLD bit set to low disables the open-load function for this output. Figure 3-2. Atmel ATA6832C [Preliminary Out1-3H OLD Threshold Level ...

Page 7

... Switching the high side outputs is possible up to 25kHz, low side switches up to 8kHz. Figure 3-3. 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary] , the temperature prewarning bit (TP) in the output register is set. When the jPW set , the affected output is disabled and the corresponding bit in the output register is set , and the SRR bit in the input register is set to high ...

Page 8

... Thermal resistance from junction to ambient 6. Operating Range Parameters Supply voltage Logic supply voltage Logic input voltage Serial interface clock frequency PWM input frequency Junction temperature range Note: 1. Threshold for undervoltage description Atmel ATA6832C [Preliminary] 8 Pin Symbol 10 10 VCC ...

Page 9

... Delay time between rising/falling edge of input signal at pin PWM and switch on/off output stages to 90% of final level. 3. Difference between switch-on and switch-off delay time of input signal at pin PWM to output stages in PWM mode. 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary] Test Conditions ISO 7637-1 VDE 0879 Part 2 ESD S 5 ...

Page 10

... Device not in standby for t > 1ms. 2. Delay time between rising/falling edge of input signal at pin PWM and switch on/off output stages to 90% of final level. 3. Difference between switch-on and switch-off delay time of input signal at pin PWM to output stages in PWM mode. Atmel ATA6832C [Preliminary] 10 ≤ 200°C; T ...

Page 11

... Delay time between rising/falling edge of input signal at pin PWM and switch on/off output stages to 90% of final level. 3. Difference between switch-on and switch-off delay time of input signal at pin PWM to output stages in PWM mode. 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary] ≤ 200° ...

Page 12

... CLK high time 8.10 CLK low time 8.11 CLK period time 8.12 CLK setup time 8.13 CLK setup time 8.14 DI setup time 8.15 DI hold time *) Type means: A =100% tested 100% correlation tested Characterized on samples Design parameter Atmel ATA6832C [Preliminary] 12 ≤ 200° Pin = 2mA 7 DOL = –2mA ...

Page 13

... 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 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary low level = 0 low level = 0 ...

Page 14

... Connect the blocking capacitors at V and GND pins. • Recommended value for capacitors at V • Recommended value for capacitors at V • To reduce thermal resistance, place cooling areas on the PCB as close as possible to the GND pins and to the die pad. Atmel ATA6832C [Preliminary ...

Page 15

... Ordering Information Extended Type Number ATA6832C-PIQW 12. Package Information PIN 1 ID Package Drawing Contact: packagedrawings@atmel.com 9216B–AUTO–06/11 Atmel ATA6832C [Preliminary] Package QFN18, 4mm × 4mm Top View Side View Bottom View 10:1 b TITLE Package: VQFN_4x4_18L Exposed pad 2 ...

Page 16

... Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 9216B-AUTO-06/11 Atmel ATA6832C [Preliminary] 16 History • Package Information: drawing changed 9216B–AUTO–06/11 ...

Page 17

... Atmel , Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellec- tual property right is granted by this document or in connection with the sale of Atmel products ...

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