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PDF FCM8202 Data sheet ( Hoja de datos )
| Número de pieza | FCM8202 | |
| Descripción | 3-Phase Sinusoidal Brushless DC Motor Controller | |
| Fabricantes | Fairchild Semiconductor | |
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November 2010
FCM8202
3-Phase Sinusoidal Brushless DC Motor Controller
Features
Supports Space Vector Modulation (SVM)
Supports Sine-Wave & Square-Wave Solutions
Built-in Clock Generator
Built-in Error Amplifier for Torque Loop Control
Direct Duty Control
Square-Wave 120°, Sine-Wave 180° Turn-on
PLL Angle Detection (Hall Sensors)
Current Leading Phase Correction
Two Selectable Dead Times
Synchronous Rectifying
Over-Voltage and Under-Voltage Protections
Motor and Power Transistors for Over-Voltage
Protections (OVP)
Three Levels of Over-Current Protections (OCP)
Adjustable OC Timer
Over-Temperature Protection (OTP)
Applicationswww.DataSheet4U.net
BLDC Motor Control
Low Noise Motor Applications
Fan, Pump, Tools, etc.
Description
FCM8202 is a three-phase sinusoidal brushless (BLDC)
motor controller with the advanced Hall sensor design.
Using the Hall sensor signals, the control system is able
to execute the PWM commutation by switching the
three-phase inverter. There are two PWM modes: Sine-
Wave Mode and Square-Wave Mode. The Square-
Wave Mode includes PWM-PWM and PWM-ON
approaches to improve the efficiency of the motor drive.
Complete protection functions including over-voltage,
over-current, over-temperature, and short-circuit
protections prevent the control circuits and the motor
from being damaged, particularly under stressed
applications and demanding environments.
Ordering Information
Part Number
FCM8202QY
Operating
Temperature Range
-40°C to 85°c
Package
32-Pin, Leadless Quad Flat Pack Package (LQFP),
JEDEC MS-026, Variation BCE, 7mm Square
Packing
Method
Tray
© 2010 Fairchild Semiconductor Corporation
FCM8202 • Rev. 1.0.0
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
VPP
ESD
Supply Voltage
Electrostatic Discharge
Protection Level
Parameter
Human Body Model, JESD22-A114
Charged Device Model, JESD22-C101
Min.
0
Max.
30
2.50
1.25
Unit
V
kV
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
TA
VPP
fSYS
R_CLK
RI_IN
Parameter
Operating Ambient Temperature
Supply Voltage
System Clock
Clock Generator External Resistor
I_IN Bias Resistor
Min.
-40
10.0
0.96
Typ.
12.0
1.28
12
10
Max.
+85
17.5
1.92
Unit
°C
V
MHz
kΩ
kΩ
www.DataSheet4U.net
© 2010 Fairchild Semiconductor Corporation
FCM8202 • Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
Figure 19. Current Feedback Flow
Figure 18. Sine-Wave Output at CW=0
Current Feedback and Protections
The current feedback circuit performs two major
functions: (1) for generating a current feedback signal
for the motor control (2) for the over-current protection.
The I_IN pin outputs 50µA current to provide a DC bias
on the I_IN terminal to prevent a negative voltage.
Equation 1 shows the I_FB and the I_IN. A 0.5V DC
bias on I_IN is recommended. The maximum average
current signal is 1V. By using these parameters, the
maximum I_FB signal swing is 0.5V~4.5V.
VI _ FB = (VS × 8) + (I BIAS _ I _ IN × RBIAS )
(1)
FCM8202 provides three levels of over-current
protection (OCP). The first level is 1.4V, is used for
overload current protection with the OCP timer delay. If
the I_IN is higher than 1.4V, the OC timer is triggered.
The OC_Latch is enabled once the timer is exceeds its
time-out limit. The second level is 1.5V, used for the
cycle-by-cycle current limit. The PWM signal is turned
off immediately when the I_IN is > 1.5V. The third level
is 2.5V, designed for short-circuit protection. If the I_IN
is > 2.5V for over three PWM pulses, all PWM outputs
(U, V, W, X, Y, Z pins) are turned off.
www.DataSheet4U.net
Protections and Faults
Table 2. Faults Table
Type
VPP OV
VPP UV
VOUT UV
RT
OS
Hall Error
HOVP
OC_Latch
SHORT
State
Free
Free, Reset
Free
Free
Free
Free
Free
Free
Free
Trigger
VPP > 18V
VPP < 8V
VOUT < 4V
RT < 1.0V
Open and Short
Hall = 000 or 111
VSENSE > 4.5V
I_IN > 1.4V
I_IN > 2.5V
© 2010 Fairchild Semiconductor Corporation
FCM8202 • Rev. 1.0.0
11
Release
VPP < 17V
VPP > 9V
VOUT > 4.5V
RT > 1.2V
FREE/nST Ê
VSENSE < 4.0V
FREE/nST Ê
FREE/nST Ê
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet FCM8202.PDF ] | |
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