1997 Sep 12

13

Philips Semiconductors

Preliminary specification

Brushless DC motor drive circuit

TDF5242T

APPLICATION INFORMATION

(1) RX = RY > 8 (VMOT

− 1.5).

Fig.6

Application diagram without use of the Operational Transconductance Amplifier (OTA) with bipolar power

transistors.

handbook, full pagewidth

MGG990

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TDF5242T

1

k

Ω

1

k

Ω

1

k

Ω

330

Ω

10

nF

100

nF

18

nF

18

nF

n.c.

n.c.

n.c.

FG

RX

(1)

RY

(1)

RX

(1)

RY

(1)

RX

(1)

RY

(1)

DIR

BRAKE

1

µF

VP

VMOT

1

µF