Rainbow-electronics ATA6831 Bedienungsanleitung PDF herunterladen (Seite 3)

4908D–AUTO–09/06

ATA6831

2. Pin Configuration

Figure 2-1. Pinning QFN18

OUT3S

OUT3F

CLK

PWM

OUT2F

VS2

VS1

VCC

GND

PGND3

PGND1

OUT1S

OUT1F

PGND2

OUT2S

18 17 16 15 1314

Table 2-1. Pin Description

Pin Symbol Function

1 OUT3S Sense pin, used only for final testing

2 OUT3F

Half-bridge output 3; formed by internally connecting power MOS high-side switch 3 and low-side switch 3

with internal reverse diodes; short circuit protection; overtemperature protection; diagnosis for short and

open load

3CS

Chip select input; 5V CMOS logic level input with internal pull-up;

low = serial communication is enabled, high = disabled

4DI

Serial data input; 5V CMOS logic level input with internal pull-down; receives serial data from the control

device; DI expects a 16-bit control word with LSB transferred first

5CLK

Serial clock input; 5V CMOS logic level input with internal pull-down;

controls serial data input interface and internal shift register (f

max

= 2 MHz)

6 PWM PWM input; 5V CMOS logic level input with internal pull-down

7DO

Serial data output; 5V CMOS logic-level tri-state output for output (status) register data; sends 16-bit status

information to the microcontroller (LSB transferred first); output will remain tri-stated unless device is

selected by CS = low; this allows several ICs to operate on only one data-output line

8 GND Ground

9 VCC Logic supply voltage (5V)

10 VS1 Power supply for output stages OUT1 and OUT2; internal supply

11 VS2 Power supply for output stages OUT2 and OUT3; internal supply

12 OUT2F

Half-bridge output 2; formed by internally connected power MOS high-side switch 2 and low-side switch 2

with internal reverse diodes; short circuit protection; overtemperature protection; diagnosis for short and

open load

13 OUT2S Sense pin, used only for final testing

14 PGND2 Power ground OUT2

15 OUT1F

Half-bridge output 1; formed by internally connected power MOS high-side switch 1 and low-side switch 1

with internal reverse diodes; short circuit protection; overtemperature protection; diagnosis for short and

open load

16 OUT1S Sense pin, used only for final testing

17 PGND1 Power ground OUT1

18 PGND3 Power ground OUT3

1 2 3 4 5 6 7 8 ... 16 17

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