Philips hef4752v DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

For a complete data sheet, please also download:

•The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC

•The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC

HEF4752V
LSI

A.C. motor control circuit

Product specification
File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product specification

A.C. motor control circuit

DESCRIPTION

The HEF4752V is a circuit for a.c. motor speed control
utilizing LOCMOS technology. The circuit synthesizes
three 120° out of phase signals, of which the average
voltage varies sinusoidally with time in the frequency
range 0 to 200 Hz. The method employed is based upon
the pulse width modulation principle, in order to achieve a
sufficient accuracy of the output voltages over the whole
frequency range. A pure digital waveform generation is
used.

All outputs are of the push-pull type. Inputs and outputs are
protected against electrostatic effects in a wide variety of
device-handling situations. However, to be totally safe, it is
desirable to take handling precautions into account.

HEF4752V

LSI

PINNING
Inputs; group I

24 = L data
25 = I data

7 = K data

5 = CW data
13 = A data
15 = B data
16 = C data

Inputs; group II

12 = FCT frequency clock
17 = VCT voltage clock

4 = RCT reference clock
6 = OCT output delay

clock

Outputs; group I

23 = RSYN R-phase synchronization
26 = VAV average voltage
18 = CSP current sampling pulses

Outputs; group II

8 = ORM1 R-phase main

9 = ORM2 R-phase main
10 = ORC1 R-phase commutation
11 = ORC2 R-phase commutation
22 = OYM1 Y-phase main
21 = OYM2 Y-phase main
20 = OYC1 Y-phase commutation
19 = OYC2 Y-phase commutation

3 = OBM1 B-phase main
2 = OBM2 B-phase main

1 = OBC1 B-phase commutation
27 = OBC2 B-phase commutation

SUPPLY VOLTAGE

Fig.1 Pinning diagram.

January 1995 2

RATING RECOMMENDED

OPERATING

HEF4752V −0,5 to 18 4,5 to 12,5 V