SA8281, SA8 Datasheet - Mitel Networks Corporation

SA8281 Three-Phase PWM Waveform Generator

Pin No. 1 2 3 4 5 6 Name AD3 AD4 AD5 AD6 AD7 Intel: WR Motorola: R/W Intel: RD Motorola: DS Intel: ALE Motorola: AS Type I I I I I I Function Multiplexed Address/Data Multiplexed Address/Data Multiplexed Address/Data Multiplexed Address/Data Multiplexed Address/Data(MSB) Intel bus control: Write St.

SA828 Family Three-Phase PWM Waveform Generator DS4226 - 2.0 November 1996 The SA828 PWM generator has been designed to provide waveforms for the control of variable speed AC machines, uninterruptible power supplies and other forms of power electronic devices which require pulse width modulation as a means of efficient power control. The six TTL level PWM outputs (Fig. 2) control the six switches in a three-phase inverter bridge. This is usually via an external isolation and amplification stage.

SA8281 Features

* s Fully Digital Operation Fig. 1 Pin connections

* top view (not to scale) s Interfaces with Most Microprocessors s Wide Power-Frequency Range s 12-Bit Speed Control Accuracy s Carrier Frequency Selectable up to 24kHz s Waveform Stored in Internal ROM s Double Edged Regular Sampling s Sele

SA8-28.pdf