BCD AM4406MTR-E1 2-phase half-wave high voltage motor pre-driver Datasheet

Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
General Description
Features
The AM4406 is a 2-phase, half-wave motor predriver
fabricated for fan motors. This IC is equipped with
lock shutdown, automatic restart and rotation detection
(RD) function. The lock shutdown function turns off
the output current when the motor is under lock condition. And when the motor is unlocked, the IC will automatically restart and allow DC fan to run. In addition,
the RD function is to detect the motor status.
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AM4406
Hall Inputs with a Hysteresis
Lock Shutdown and Automatic Restart
Rotation Detection (RD) Output
Supply Voltage: 4 to 28V
Output Current: 70mA Max.
Operating Temperature: -30 to 85oC
Applications
The AM4406 is available in SOIC-8 package.
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High Voltage, High Current Brushless DC Fan
Power Supply and Switchboards
Communications Facilities
Industrial Equipment
SOIC-8
Figure 1. Package Type of AM4406
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Pin Configuration
M Package
(SOIC-8)
VCC
1
8
OUT1
HS (+)
2
7
OUT2
RD
3
6
CT
HS (-)
4
5
GND
Figure 2. Pin Configuration of AM4406 (Top View)
Pin Description
Pin Number
Pin Name
Function
1
VCC
Power supply
2
HS (+)
Hall input (+)
3
RD
4
HS (-)
Hall input (-)
5
GND
Ground
6
CT
7
OUT2
Driver output 2
8
OUT1
Driver output 1
Rotation detection
Timing capacitor
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Functional Block Diagram
VCC
1
Reg
HS (+)
RD
8
Pre-driver 1
Pre-driver 2
2
7
6
Hall
Amp
Control Logic
OUT2
CT
3
Automatic
Restart
Lock
Detector
Comparator
5
HS (-)
OUT1
4
GND
Comparator
Figure 3. Functional Block Diagram of AM4406
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Ordering Information
AM4406
-
Circuit Type
E1: Lead Free
Package
TR: Tape and Reel
Blank: Tube
M: SOIC-8
Package
Temperature Range
SOIC-8
-30 to 85oC
Part Number
Marking ID
Packing Type
AM4406M-E1
AM4406M
Tube
AM4406MTR-E1
AM4406M
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
30
V
Output Current
IOUT
70
mA
PD
550 (Note 2)
mW
Storage Temperature Range
TSTG
-55 to 125
ESD (Human Body Model)
ESD
3000
V
ESD (Machine Model)
ESD
300
V
Power Dissipation
o
C
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods
may affect device reliability.
Note 2: Reduced by 5.5mW/oC when TA is over 25oC.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
VCC
4
28
V
Hall Input Voltage (+) (Note 3)
VHS (+)
1.0
VCC-0.5
V
Hall Input Voltage (-) (Note 3)
VHS (-)
1.0
VCC-0.5
V
TA
-30
85
Supply Voltage
Operating Temperature
o
C
Note 3: Hall input voltage range includes the amplitude of signal.
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Electrical Characteristics
(VCC=12V, TA=25oC, unless otherwise specified.)
Parameter
Supply Current
Symbol
ICC
Conditions
Min
No load
Typ
Max
Unit
3.2
5.0
mA
Hall Amplifier Input Hysteresis (+)
VHYS (+)
Zero to peak including offset
and hysteresis
3
15
mV
Hall Amplifier Input Hysteresis (-)
VHYS (-)
Zero to peak including offset
and hysteresis
-3
-15
mV
CT Charge Current
ICHG
VCT=1.5V
2
3.45
5.25
µA
CT Discharge Current
IDHG
VCT=1.5V
0.35
0.8
1.45
µA
CT Charge and Discharge Ratio
RCD
ICHG/ IDHG
3
4.5
8
CT Clamp Voltage
VCL
2.2
2.6
3
V
CT Comparator Voltage
VCP
0.4
0.6
0.8
V
OUT1 High Level Voltage
VOH1
IOUT1=10mA
10
10.5
V
OUT2 High Level Voltage
VOH2
IOUT2=10mA
10
10.5
V
RD Output Low Level Voltage
VRDL
IRD=5mA
IRD
VRD=2V
RD Current Capacity
Apr. 2007 Rev. 1. 2
0.2
8
18
0.5
V
mA
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Typical Performance Characteristics
12.0
6.0
VCC=12V
No Load
5.5
5.0
Output Voltage (V)
Supply Current (mA)
11.6
4.5
4.0
11.2
10.8
3.5
10.4
3.0
2.5
0
10.0
5
10
15
20
25
30
0
20
40
60
80
100
Output Current (mA)
Supply Voltage (V)
Figure 4. Supply Current vs. Supply Voltage
Figure 5. Output Voltage vs. Output Current
50
2.5
VCC=12V
VCC=12V
40
RD Low Voltage (V)
RD Current (mA)
2.0
30
20
1.5
1.0
0.5
10
0.0
0
0
4
8
0
12
4
8
12
16
20
RD Current (mA)
RD Supply Voltage (V)
Figure 6. RD Current vs. RD Supply Voltage
Figure 7. RD Low Voltage vs. RD Current
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Typical Performance Characteristics (Continued)
800
Power Dissipation (W)
700
Package: SOIC-8
600
500
400
300
200
100
0
0
20
40
60
80 85
100
120
O
Ambient Temperature ( C)
Figure 8. Power Dissipation vs. Ambient Temperature
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Operating Diagram
Hall Input
ON
OFF
Motor Output
CT
Motor Lock
Cleared
Motor Locked
Motor Lock Detected
TON
TOFF
Reverts to normal operation
High
RD
Note 4: Automatic restart is performed in the following manner. A motor lock condition is detected when the hall signal stops
switching. The output is ON when CT pin is being charged. C2 is the external capacitor of the CT pin. Output ON time and
OFF time are determined by the capacitance of C2.
Note 5: RD pin is ON during normal operation, and OFF when the motor is locked. It is an open collector output pin.
TON =
C2 * ( VCL − VCP )
(Sec.)
ICHG
TOFF =
C2 * ( VCL − VCP )
(Sec.)
IDHG
Note 6: The RD pin may maintain HIGH level for a few hundred milliseconds when the power is turn on.
Power
RD
A few hundred milliseconds
Figure 9. Control Timing Diagram of AM4406
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Typical Application
D2
D1
VCC
+
C1
L1
VCC
OUT1
R1
Hall
Element
Q1
R4
HS (+)
L2
Z11
Z1N
Z21
OUT2
R2
AM4406
R5
Z2N
R6
HS (-)
CT
VRD (Note 7)
Q2
RD
RD Output
GND
C2
Note 7: VRD should be equal or smaller than VCC.
Figure 10. Typical Application of AM4406
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER
AM4406
Mechanical Dimensions
SOIC-8
4.700(0.185)
5.100(0.201)
7°
Unit: mm(inch)
0.320(0.013)
1.350(0.053)
1.750(0.069)
8°
8°
7°
0.675(0.027)
0.725(0.029)
D
5.800(0.228)
1.270(0.050)
6.200(0.244)
TYP
D
20:1
φ 0.800(0.031)
0.300(0.012)
R0.150(0.006)
0.100(0.004)
0.200(0.008)
0°
8°
1.000(0.039)
3.800(0.150)
4.000(0.157)
0.330(0.013)
0.190(0.007)
0.250(0.010)
1°
5°
0.510(0.020)
0.900(0.035)
R0.150(0.006)
0.450(0.017)
0.800(0.031)
Apr. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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