SA8281DP1S MITEL [Mitel Networks Corporation], SA8281DP1S Datasheet
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SA8281DP1S
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SA8281DP1S 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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SA828 HARDWARE INPUT/OUTPUT FUNCTIONS Set Output Trip (SET TRIP input) The SET TRIP input is provided separately from the microprocessor interface in order to allow an external source to override the microprocessor and provide a rapid shutdown facility. For example, ...
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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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PACKAGE DETAILS Dimensions are shown thus: mm (in). For further package information, please contact your local Customer Service Centre. 28 SPOT REF. CHAMFER 1 REF. 0·74 (0·029) MAX. 14·73 (0·58) MAX 1·14/1·65 (0·045/0·065) 5·08/(0·200) MAX SEATING PLANE 0·38/0·61 (0·015/0·024) 7·40/7·60 ...
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SA828 HEADQUARTERS OPERATIONS MITEL SEMICONDUCTOR Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (01793) 518000 Fax: (01793) 518411 MITEL SEMICONDUCTOR 1500 Green Hills Road, Scotts Valley, California 95066-4922 United States of America. Tel (408) 438 2900 Fax: (408) 438 ...