DIA57070

Version 1.2, Oct 2024

www.dioo.com

© 2024 DIOO MICROCIRCUITS CO., LTD.

13

Table 4. Truth table: OFF-state

INA

INB

SEL0 PWM

OUTA

OUTB

CS

Description

OFF-state diagnostic

0

0

1

0

VOUTA >

VOL

X

VSENSEH

Case 1. OUTA shorted to VCC if no pull-up

resistor is applied

Case 2. No open-load in full bridge configuration

with an external pull-up resistor on OUTB

Case 3. open-load in half bridge configuration

with an external pull-up resistor on OUTA (motor

connected between OUTA and Ground)

VOUTA <

VOL

X

Hi-Z

Case 1. Open-load in full bridge configuration

with an external pull-up resistor on OUTB

Case 2. No open-load in half bridge

configuration with an external pull-up resistor on

OUTA (motor connected between OUTA and

Ground)

0(1,2)

X

VOUTB >

VOL

VSENSEH

Case 1. OUTB shorted to VCC if no pull-up

resistor is applied

Case 2. No open-load in full bridge configuration

with an external pull-up resistor on OUTA

Case 3. Open-load in half bridge configuration

with an external pull-up resistor on OUTB (motor

connected between OUTB and Ground)

X

VOUTB <

VOL

Hi-Z

Case 1. Open-load in full bridge configuration

with an external pull-up resistor on OUTA

Case 2. No open-load in half bridge

configuration with an external pull-up resistor on

OUTB (motor connected between OUTB and

Ground)

Note:

(1) The device enters standby mode after standby mode blanking time.

(2) To power on the device from the standby, toggle INA or INB from 0 to 1 first and then PWM from 0 to 1 to avoid any

over-stress on the device in case of short-to-battery.