TA84006F/FG

2006-3-6

7

Functions

Input

Output

IN-P

IN-N

Upper Power

Transistor

Lower Power

Transistor

High

High

ON

OFF

High

Low

High

ON

ON

Prohibit mode

(Note 4)

High

Low

OFF

OFF

High impedance

Low

Low

OFF

ON

Low

Connecting the TB6548F/FG (or TB6537P/PG/F/FG) to the TA84006F/FG allows electric motors to be controlled

by PWM.

Note 4: In Prohibit Mode, the output power transistor goes into vertical ON mode and through current may damage

the circuit. Do not use the TA84006F/FG in this mode.

This mode is not actuated when the TA84006F/FG is connected to the TB6548F/FG or TB6537P/PG/F/FG,

but can be triggered by input noise during standalone testing.

<Schematic>

<Lower PWM>

Connecting the TA84006F/FG to the TB6537P/PG/F/FG controls the lower PWM.

At chopping ON, the diagonally output power transistors are ON.

At chopping OFF, the lower transistor is OFF, regenerating the motor current via the upper diode

(incorporating the Pch-MOS).

TB6548F/FG

(TB6537P/

PG/F/FG)

OUT-P

OUT-N

Low active

High active

IN-P

IN-N

VM

OUT

VM

ON

Pch-MOS

OFF

<Coil current route>

When chopping is ON

When chopping is OFF

OFF