Inverter Interface and Digital Deadtime Generator
for 3-Phase PWM Controls
Type
IXDP630 PI
IXDP631 PI
Package
18-Pin Plastic DIP
18-Pin Plastic DIP
Configuration
RC Oscillator
Crystal Oscillator
Temp. Range
-40掳C to +85掳C
-40掳C to +85掳C
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Features
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5 V HCMOS logic implementation
maintains low power at high speed
Schmitt trigger inputs and CMOS
logic levels improve noise immunity
Simultaneously injects equal dead-
time in up to three output phases
Replaces 10-12 standard SSI/MSI
logic devices
Allows a wide range of PWM
modulation strategies
Directly drives high speed
optocouplers
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This 5 V HCMOS integrated circuit is
intended primarily for application in
three-phase, sinusoidally commutated
brushless motor, induction motor, AC
servomotor or UPS PWM modulator
control systems. It injects the required
deadtime to convert a single phase leg
PWM command into the two separate
logic signals required to drive the upper
and lower semiconductor switches in a
PWM inverter. It also provides facilities
for output disable and fast overcurrent
and fault condition shutdown.
In the IXDP630, deadtime programming
is achieved by an internal RC oscillator.
In the IXDP631, programming is
achieved by use of a crystal oscillator.
An alternative for both the IXDP630/
631 is with an external clock signal.
Because of its flexibility, the IXDP630/
631 is easily utilized in a variety of
brushed DC, trapezoidally commutated
brushless DC, hybrid and variable
reluctance step and other more exotic
PWM motor drive power and control
circuit designs.
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Applications
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1- and 3- Phase Motion Controls
1- and 3- Phase UPS Systems
General Power Conversion Circuits
Pulse Timing and Waveform
Generation
General Purpose Delay and Filter
General Purpose Three Channel
"One Shot"
Block Diagram IXDP 630/IXDP 631
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IXYS reserves the right to change limits, test conditions and dimensions.
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漏 1998 IXYS All rights reserved
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