HEF4752V

INTEGRATED CIRCUITS DATA SHEET 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. PINNING Inputs; group I 24 = L 25 = I 7=K 5 = CW 13 = A 15 = B 16 = C Inputs; group II 12 = FCT 17 = VCT 4 = RCT 6 = OCT frequency clock voltage clock reference clock output delay clock data data data data data data data HEF4752V LSI Outputs; group I 23 = RSYN 26 = VAV 18 = CSP Outputs; group II 8 = ORM1 9 = ORM2 10 = ORC1 11 = ORC2 22 = OYM1 21 = OYM2 20 = OYC1 19 = OYC2 3 = OBM1 2 = OBM2 1 = O...