2020 Microchip Technology Inc. DS50002927A-page 55
dsPIC33CK LOW-VOLTAGE
MOTOR CONTROL BOARD
USER’S GUIDE
Appendix B. Electrical Specifications
B.1 INTRODUCTION
This section provides the electrical specifications for the dsPIC33CK Low-Voltage
Motor Control Board User’s Guide (see Table B-1).
TABLE B-1: ELECTRICAL SPECIFICATIONS
(1,2,3)
Parameter Operating Range
Input DC Voltage 12-48V
Absolute Maximum Input DC Voltage 55V
Maximum Input Current through Connector J1 2.5A
Maximum Input Current through Connector J2 24A
Continuous Output Current per Phase @ +25°C 10A (RMS)
Note 1: At an ambient temperature (+25°C), the Motor Control Board remains within
thermal limits when operating with continuous output currents of up to 10A (RMS)
while operating in the permissible voltage range.
2: At an ambient temperature (+25°C), it is possible to increase the continuous per
phase output current delivery up to 20A (RMS) by an appropriate level of forced air
cooling using a fan.
3: When spinning the motor under certain conditions (field weakening or restarting of
motor with inertia load while coasting down, direction reversal when motor is spin-
ning at higher speed), this may cause the DC bus voltage to rise beyond the
applied input DC voltage (if the DC power supply is non-receptive). Under such
conditions, ensure that the input DC voltage does not exceed the specified
‘Absolute Maximum Input DC Voltage’ (refer to Tabl e B-1). Failure to ensure the DC
voltage will cause permanent damage to the Motor Control Board.
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