FEBFCM8531_B01H300A Fairchild Semiconductor, FEBFCM8531_B01H300A Datasheet - Page 5

• Manufacturer Part Number: FEBFCM8531_B01H300A
• Description: Power Management IC Development Tools 300W 3Phse PMSM/BLDC Motor Control Board
• Manufacturer: Fairchild Semiconductor
• Type: Motor / Motion Controllers & Driversr

Specifications of FEBFCM8531_B01H300A

• Rohs: yes
• Product: Devolopment Boards
• Input Voltage: 5 V
• Output Voltage: 2.5 V
• Description/function: Processor for motor control that consist of an advanced motor controller
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: -40 C
• Output Current: 29 mA
• For Use With: MCS51

Power Input
An AC-DC rectifier converts the 220 V
residential electricity to a DC voltage that
AC
powers the motor drive and the system DC-DC converter. The evaluation board can also
accommodate an alternate input source through the PFC+ and PFC_GND connectors. For
example, if Power Factor Correction (PFC) or a specific regulated DC input voltage is
required, connect the output of an external power supply directly to the PFC+ and
PFC_GND inputs on the board. When one these alternative powering methods is utilized,
the on-board AC-DC rectifier circuits are not used. Nevertheless, it is still galvanically
connected to the high-voltage portion of the evaluation board; thus the components of the
AC-DC recifier circuit can cause dangerous high-voltage electric shock. It is important to
physically remove the AC input cord of the evaluation board when the AC-DC bridge
rectifier is not used.
The DC-DC converter provides the +15 V and +5 V supply voltages for the control and
gate drive circuits of the evaluation board. The operation of the bias power supply is
indepenent of the input source and can accommodate the input from the AC-DC rectifier
or from an external power source.
Motor Drive and Current Sensing
The evaluation board uses a Fairchild Smart Power Module (SPM®), which simplifies
the PCB layout and manufacturing by integrating all the motor drive components; e.g.
IGBTs/FRFETs, HVICs, LVIC, bootstrap diodes, and NTC thermistor. Note that various
SPM modules can meet the requirements of different motor applications; e.g. SPM Series
5, SPM Series 45 H, SPM Series 3, and SPM Series 2. Please visit the Fairchild website
for more information;
http://www.fairchildsemi.com/applications/motor-control/bldc-
pmsm-controller.html.
The FCM8531 has three dedicated current-sensing pins and users may connect those pins
to three shunt resistors. The current-sense information can be used for over-current
protection and for sensorless algorithms.
Operating Interface
Operation of the evaluation board is controlled by three commands: forward / reverse
rotation (CW/CCW), run / stop, and speed. The first two commands (FWD/REV and
RUN/STOP) are implemented by switches connected to digital I/O pins of the FCM8531.
The speed command uses a variable resistor (potentiometer) for adjusting a voltage level
connected to the ADC0 input of the FCM8531. Inside the FCM8531, this voltage level is
converted to a speed command.
Debugging Interface
The Motor Control Development System (MCDS) programming kit is needed to load the
developed firmware into the FCM8531 through the In System Programming (ISP)
interface. Verification and debugging are performed with the MCDS programming kit.
© 2012 Fairchild Semiconductor Corporation
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FEBFCM8531_B01H300A • Rev. 1.0.1