SK-POWER-3P-LV-MC Fujitsu, SK-POWER-3P-LV-MC Datasheet - Page 6

• Manufacturer Part Number: SK-POWER-3P-LV-MC
• Description: Low Voltage/Motor Control Evaluation Board
• Manufacturer: Fujitsu

Specifications of SK-POWER-3P-LV-MC

• Silicon Manufacturer: Fujitsu
• Silicon Core Number: SK-91470-144PMC1-MC, SK-91480-100PMC-MC
• Kit Application Type: Power Management - Motor Control
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SK-POWER-3P-LV User Guide
1.3 General Description
The SK-POWER-3P-LV supports the Fujitsu starter kits with the –MC suffix, such as the SK-
91470-144PMC1-MC and SK-91480-100PMC-MC (The MotorKit-91F267-MC is not directly
connectable). It is an extension board for these starter kits and serves as power stage
(inverter) for brushless motor control applications using Fujitsu’s motor control MCUs.
The on-board voltage regulators allow the user to configure the board to fit a variety of
situations. The board includes a 15V regulator for the gate drivers, as well as a 5V-regulator
for the analog and logic supply. The 15V regulator can be bypassed (JP22) if the source
input voltage is in the range of 10-20V. The 5V regulator can use a separate 9-15V input or
use the gate drive supply as regulator input. Also, solder jumpers (JP18 and JP19) can be
set to supply the DC link from the logic power supply input (X6), e.g. when using a small
motor (<3A).
The board includes shunt resistors and signal conditioning for phase- and DC link current
measurement. Also voltage dividers for phase- and DC link voltage measurement are
provided. A comparator with adjustable threshold can be used to monitor the DC link and
generate a fault signal in case of over-current or over-voltage.
A temperature sensor IC is placed between the power transistors to monitor the board
temperature. Its analog output signal is 500mV +10mV/° C and can be routed to the
Starterkit.
The board contains three MOSFET half-bridges to drive three-phase motors, such as PMSM
(Permanent Magnet Synchronous Motor) or BLDC (Brushless Direct Current) motors.
Additionally, a chopper circuit is provided. Together with an external brake resistor, it
enables dynamic braking, i.e. limiting the DC link voltage when the motor acts as generator,
for example when decelerating a mechanical load.
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