HOMURA H-bridge motor driver HMR-MD04 (Winter, 2012)


Four Nch-FETs are drives by half-bridge FET driver ICs (LT1158). A motor can be controlled by PWM with less than 100 kHz.

When the battery voltage is lower than abount 6V, the FET drivers are disable.

Nch-FETs IRLR8713 (max 100A) are used.

Signal level from microcontroller should be 5V.

Caution Current of the circuit is about 1 mA even in idle time.

Circuit diagram of HMR-MD04

PCB file

A
B
Vbat
Action
X
X
<6V
FREE

L

L
>6V
FREE
H
L
>6V
REVERSE
L
H
>6V
NORMAL
H
H
>6V
BRAKE
Mobile Sensor for Volcanic Observation "HOMURA"
火山観測用自走式センサー「ほむら」

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