MTD6501D 12V 3-PHASE BLDC SENSORLESS
FAN CONTROLLER DAUGHTER BOARD
USER’S GUIDE
2016 Microchip Technology Inc. DS50002481A-page 15
Chapter 2. Installation and Operation
2.1 GETTING STARTED
In Standalone mode, a power supply (2V to 14V) is required to supply the board using
the VCC and the GND connector to operate with the daughter boards. Ensure that the
power supply can provide enough current for the application (maximum is 800 mA).
A function generator with the frequency range of 0.02 kHz to 100 kHz can be used for
the PWM pin. The PWM pin can be driven open-drain (internal pull) or logic 0V-3V. The
PWM pin can be left open in order to operate with a PWM = 100%. The FG pin allows
the electrical speed of the motor to be read. The assembled R1 resistor is used as a
pull-up to VDD, so the signal will switch between 0V and 3V.
Verify if the Boost pin has to be enabled. To enable the Boost pin, a 0Ω resistor should
be assembled on the board in the R2 location. If the Boost pin does not need to be
enabled, R2 should remain unpopulated. See the MTD6501 Data Sheet (DS22263B)
for more information about the Boost pin. Connect the 3-phase BLDC motor before
enabling the power supply.
Figure 2-1 shows the connection to operate the MTD6501 Daughter Board.
FIGURE 2-1: MTD6501 Daughter Board Operation.
C2
R1
FG
GND
VDD
GND
GND
PWM
Not connected
VCC
VCC
VCC
C1
GND
OUT1-2-3
MTD6501
PWM input
(0.02-100 kHz)
VCC 2-14V
R2
