Vector Control Development Kit
User Manual
21
Description of the Hardware
The hardware interface of the Vector Control Unit consists of the follow-
ing:
UM021402-0407
?
?
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Insulated gate bipolar transistors (IGBTs)
Six 6SGS5N60RUFD insulated-gate bipolar transistors are used
under PWM control to generate the required 3-phase AC motor drive
current from a high-voltage DC supply. Although these IGBTs are
rated for momentary short-circuit operation, the Z8 Encore! MC ?
PWM deadband feature is used to reduce leakage when the IGBTs are
switched.
Three IR21064S high- and low-side gate drivers are used to convert
the Z8 Encore! MC ? microcontroller ’s CMOS PWM outputs into
signals with the voltage needed to drive the IGBT gate inputs.
High-voltage (HV) gate drive module
This module contains the three IR21064S high- and low-side gate
drivers that convert the Z8 Encore! MC ? microcontroller PWM out-
puts into the voltage needed to drive the IGBT gate inputs.
The module uses 600-V level-shifted drivers for the three high-side
IGBTs.
UART interface module
This module interfaces to the tachogenerator and optoisolated UART.
The tachogenerator produces a single sine wave with voltage and fre-
quency proportional to motor speed. The optoisolators are used for
UART communication.
Description of the Hardware
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