ATA6823-DK

ATA6823-DK Datasheet

The ATA6823 is designed specifically for automotive applications that require high-power motors. It provides four high-current gate driver outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. A fully integrated charge pump with external capacitors provides the gate voltage for the high-side output stages.

Part	Datasheet
ATA6823-DK	ATA6823-DK (pdf)

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H-bridge Gate Driver with LIN Transceiver, Watchdog, and 5V Regulator Introduction The ATA6823 is designed specifically for automotive applications that require high-power motors. It provides four high-current gate driver outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. A fully integrated charge pump with external capacitors provides the gate voltage for the high-side output stages. The ATA6823 supports low-speed LIN-data communication up to 20kBaud in compliance with LIN specification using a built-in LIN transceiver. Protection features include undervoltage/overvoltage detection and shutdown, overtemperature shutdown, and short circuit detection of motor leads to battery voltage and to ground. Shoot-through protection is guaranteed using a dead-time adjustment which can be set by hardware. Atmel ATA6823 H-bridge Gate Driver with LIN Transceiver, Watchdog and 5V Regulator Application Note Application Board The ATA6823 application board allows the running of a DC motor. The supply voltage is 8V to 18V, maximum power of the DC motor is limited by the external H-bridge MOSFETs. No microcontroller is implemented on-board. It is possible to control the motor either via an external microcontroller with or without LIN bus , or directly using the DIR and PWM pins . • Header Pins X1 to Connect to LIN Bus as well as Power Supply Output and EN2 Wake-up See Table 2-1 on page 6 • Microcontroller Connector Interface See Table 2-2 on page 6 • 4-mm Banana Plugs to Connect Power Supply BAT and GND See Figure 2-2 on page 3 • Included Power DC Motor On-board, Turn Direction Indicated by LEDs • Vias M+ and to Connect Optional DC Motor • Optional Connection of External Motor H-bridge See Figure 2-6 on page 8 • Push-button EN2 to Wake-up Atmel ATA6823 • Jumper VMODE to Select VCC Output Voltage Level • Jumper RWD to Select Different WD Resistors • Shunt for DC Motor Current Measurement Figure Application Board 2 Atmel ATA6823 Figure ATA6823 Application Board Schematic V+ VSUP C1 C2 10 nF µF PGND 1 VCC 2 GND 3 LIN 4 VBAT 5 VBATSW 6 EN2 1 VCC 2 GND 3 /RESET 4 WD 5 TX 6 DIR 7 PWM 8 EN1 9 RX 10 DG3 11 DG2 12 DG1 13 AD0 14 PGND L1 7 µH Q1 SUM110N06-05L D1 BAS16 R1 470 kΩ Q2 BC817-40 D2 GF1G C4 µF C5A + 220 µF/ 35V 220 µF/ 35V PBAT C6 470 nF VRES 10 kΩ R3 10 kΩ D3 LL4248 1kΩ Master C9 + 220 µF/35V C7 100 nF C10 µF R5B n.b. JP1 RWD C11 220 nF n.b.

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H-bridge Gate Driver with LIN Transceiver, Watchdog, and 5V Regulator

Introduction

The ATA6823 is designed specifically for automotive applications that require high-power motors. It provides four high-current gate driver outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. A fully integrated charge pump with external capacitors provides the gate voltage for the high-side output stages.

The ATA6823 supports low-speed LIN-data communication up to 20kBaud in compliance with LIN specification using a built-in LIN transceiver. Protection features include undervoltage/overvoltage detection and shutdown, overtemperature shutdown, and short circuit detection of motor leads to battery voltage and to ground. Shoot-through protection is guaranteed using a dead-time adjustment which can be set by hardware.

Atmel ATA6823 H-bridge Gate Driver with LIN Transceiver, Watchdog and 5V Regulator

Application Note

Application Board

The ATA6823 application board allows the running of a DC motor. The supply voltage is 8V to 18V, maximum power of the DC motor is limited by the external H-bridge MOSFETs. No microcontroller is implemented on-board. It is possible to control the motor either via an external microcontroller with or without LIN bus , or directly using the DIR and PWM pins .
• Header Pins X1 to Connect to LIN Bus as well as Power Supply Output and EN2 Wake-up See Table 2-1 on page 6
• Microcontroller Connector Interface See Table 2-2 on page 6
• 4-mm Banana Plugs to Connect Power Supply BAT and GND See Figure 2-2 on page 3
• Included Power DC Motor On-board, Turn Direction Indicated by LEDs
• Vias M+ and to Connect Optional DC Motor
• Optional Connection of External Motor H-bridge See Figure 2-6 on page 8
• Push-button EN2 to Wake-up Atmel ATA6823
• Jumper VMODE to Select VCC Output Voltage Level
• Jumper RWD to Select Different WD Resistors
• Shunt for DC Motor Current Measurement

Figure Application Board
2 Atmel ATA6823

Figure ATA6823 Application Board Schematic

V+ VSUP

C1 C2 10 nF µF

PGND
1 VCC 2 GND 3 LIN 4 VBAT 5 VBATSW 6 EN2
1 VCC 2 GND 3 /RESET 4 WD 5 TX 6 DIR 7 PWM 8 EN1 9 RX 10 DG3 11 DG2 12 DG1 13 AD0 14 PGND

L1 7 µH

Q1 SUM110N06-05L

D1 BAS16

R1 470 kΩ

Q2 BC817-40

D2 GF1G

C4 µF

C5A +
220 µF/ 35V
220 µF/ 35V

PBAT C6 470 nF

VRES
10 kΩ

R3 10 kΩ

D3 LL4248
1kΩ Master

C9 + 220 µF/35V

C7 100 nF

C10 µF

R5B n.b.

JP1 RWD

C11 220 nF
n.b.

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Datasheet ID: ATA6823-DK 519210