SA8281IG Mitel, SA8281IG Datasheet
SA8281IG
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SA8281IG Summary of contents
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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. ...
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SA828 ELECTRICAL CHARACTERISTICS These characteristics are guaranteed over the following conditions (unless otherwise stated + AMB DC Characteristics Characteristic Input high voltage Input low voltage Input leakage current Output high voltage Output ...
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CS BUS MOTEL CONTROL INTERFACE SYSTEM 8 BUS BUS DEMULTIPLEXER AD - RST CLOCK CLOCK DIVIDER FUNCTIONAL DESCRIPTION An asynchronous method of PWM generation is used with uniform or ‘double-edged’ regular sampling of ...
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SA828 PWM SWITCHING INSTANTS +1 0 – – 1 Fig. 3 Asynchronous PWM generation with‘double-edged’ regular sampling as used by the SA828 t 1 ALE ...
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MICROPROCESSOR BUS TIMING Intel Mode (Fig. 4 and Table 1) The address is latched by the falling edge of ALE. Data is written from the bus into the SA828 on the rising edge of WR not used in ...
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SA828 The power frequency range is a function of the carrier waveform frequency ( f ) and a multiplication factor m , CARR determined by the 3-bit FRS word. The value determined as shown in Table 5. ...
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PWM SIGNAL BEFORE PULSE DELETION PWM SIGNAL AFTER PULSE DELETION t = PULSE DELETION TIME pd Control Register Programming The control register should only be programmed once the initialisation register contains the basic operating parameters of the SA828. As with ...
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SA828 AMP AMP AMP AMP AMP AMPLITUDE SELECT WORD AMP = MSB 7 = LSB AMP 0 Fig.14 Temporary register R2 Amplitude selection The power waveform amplitude is determined by scaling the amplitude of the ...
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Control Register Programming Example The control register would normally be updated many times while the motor is running, but just one example is given here assumed that the initialisation register has already heen programmed with the parameters given ...
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... A [ sin ( sin SA828-2 Pure sinewave: x( sin ( t )] Additional wave shapes can be implemented to order, provided they are symmetrical about the 90 , 180 and 270 axes. Contact your local Mitel Semiconductor Customer Service Centre for further details. Sample number 0 - 127 128 - 255 256 - 383 90 ...
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RECTIFIER AND SMOOTHING SINGLE OR 3-PHASE POWER SUPPLY Fig typical SA828 application INVERTER – DC LINK 3-PHASE VARIABLE VOLTAGE, VARIABLE FREQUENCY WAVEFORM + 6 ISOLATOR TTL LEVEL FAST PWM 6 SHUTDOWN WAVEFORMS SA828 8 DATA/ADDRESS ...
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SA828 12 ...
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... Please contact your Mitel Semiconductor Customer Service Centre for further information. 15.24 (0·6) NOM CTRS 0·23/0·41 (0·009/0·016) NOTES 1. Controlling dimensions are inches. 2. This package outline diagram is for guidance only. Please contact your Mitel Semiconductor Customer Service Centre for further information. SA828 13 ...
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... TAIWAN, ROC Taipei Tel: 886 2 25461260 Fax: 886 2 27190260 UK, EIRE, DENMARK, FINLAND & NORWAY Swindon Tel: (01793) 726666 Fax : (01793) 518582 These are supported by Agents and Distributors in major countries world-wide. © Mitel Corporation 1998 Publication No. DS4226 Issue No. 2.0 November 1996 TECHNICAL DOCUMENTATION – NOT FOR RESALE. PRINTED IN UNITED KINGDOM ...