FCM8202 Fairchild Semiconductor, FCM8202 Datasheet - Page 4

• Manufacturer Part Number: FCM8202
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FCM8202 • Rev. 1.0.1
Pin Definitions
Pin #
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
FREE/nST
CW/CCW
OC_TMR
VSENSE
nFAULT
R_CLK
Name
DGND
HOVP
AGND
PGND
APRS
VOUT
DUTY
OPO
I_FB
DTS
VPP
I_IN
HC
HA
HB
FO
AS
RT
IP
IN
W
Y
V
X
U
Z
Motor Drive Over-Voltage Protection Output. Can be connected to an external power
transistor for discharging the Back-EMF.
Hall A Sensor Input. Phase-U magnetic field detection.
Hall B Sensor Input. Phase-V magnetic field detection.
Hall C Sensor Input. Phase-W magnetic field detection.
Direction Control Input. This pin has a 200KΩ internal pull-up. HIGH: CW, LOW: CCW.
Free and Start Control Input. This pin has a 200KΩ internal pull-up. HIGH: Free, LOW: Start.
Angle Predict Range Selection Input. This pin has a 200KΩ internal pull-up. LOW: 0.8 ~ 80Hz,
HIGH: 3.2 ~ 320Hz Hall Frequency.
Dead-Time Selection Input. This pin has a 200KΩ internal pull-up. LOW: 3µs, HIGH: 4µs.
Revolution Pulse Output. Pulses per revolution = motor poles ÷ 2 × 3.
Digital Ground
Voltage Regulator Output. A 0.1µF (minimum) capacitor should be connected between this
pin and ground.
Positive Input of Torque Error Amplifier
Output of Torque Error Amplifier
Negative Input of Torque Error Amplifier
Current Feedback Output
PWM Duty Control Input. Designed to directly control the PWM duty cycle.
External Resistor of Clock Generator. Designed for determining the frequency of internal clock
generator.
Analog Ground
Current Feedback Input
Angle Shift Input. Designed for correcting the lead angle of PWM output signals. The range is
from 0° to 60° related to the induced magnetic voltage.
Motor Drive Voltage-Sensing Resistor. Designed for determining the voltage level of over-
voltage protections.
Thermistor Voltage Input. Connect to a Negative Temperature Coefficient (NTC) thermistor
for the over-temperature protection.
Overload Time-Out Programmable Input. Connect to a capacitor for determining the time
delay of overload protection.
Fault Flag. Open-drain output, LOW: system failure.
Supply Voltage Input
PWM Output of W-Phase, Low-Side
PWM Output of W-Phase, High-Side
PWM Output of V-Phase, Low-Side
PWM Output of V-Phase, High-Side
PWM Output of U-Phase, Low-Side
PWM Output of U-Phase, High-Side
High-Voltage Ground
4
Description
www.fairchildsemi.com