BCD AM4962 Single phase full wave direct pwm motor driver Datasheet

Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
General Description
Features
The AM4962 is a full wave driver IC with direct
PWM control function. It is used for single phase
motor and is capable of speed control by PWM pulse.
•
The AM4962 is available in HTSSOP-14 and
SSOP-16 packages.
•
•
•
•
•
•
•
•
•
AM4962
The Motor Speed is Controlled by PWM Pulse
Directly
Built-in Triangle Wave Circuit Without Extra
Oscillation Capacitor
Built-in Hall Bias Circuit
Built-in Minimal Speed Setup Circuit
Slope K* Adjustable
Rotation Speed Indication (FG)
Rotation or Lock State Indication (RD)
Built-in Thermal Shutdown Circuit
Lock Protection and Auto-restart
Output Current Limit
* Slope K is the slope of output PWM duty vs. input
PWM duty
Applications
•
•
HTSSOP-14
CPU Cooler Fan in PC
Brushless DC Motor Driver
SSOP-16
Figure 1. Package Types of AM4962
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Pin Configuration
GH Package
(HTSSOP-14)
PGND
PGND
OUT2
1
14
OUT1
VCC
2
13
GND
VMIN
3
12
CT
PWM
4
11
RADJ
CF
5
10
HIN-
FG
6
9
HB
RD
7
8
HIN+
GS Package
(SSOP-16)
OUT2
1
16
PGND
NC
2
15
OUT1
VCC
3
14
GND
VMIN
4
13
CT
PWM
5
12
RADJ
CF
6
11
HIN-
FG
7
10
HB
RD
8
9
HIN+
Figure 2. Pin Configuration of AM4962 (Top View)
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Pin Description
Pin Number
HTSSOP-14 SSOP-16
1
Pin Name
Function
1
OUT2
Driver output 2
2
NC
No connection
2
3
VCC
Power supply
3
4
VMIN
Minimum duty setting
4
5
PWM
PWM pulse Input
5
6
CF
PWM filter capacitor
6
7
FG
Rotation speed indicator
7
8
RD
Rotation/lock state indicator
8
9
HIN+
9
10
HB
10
11
HIN-
Hall sensor input -
11
12
RADJ
Slope K adjustable terminal
12
13
CT
13
14
GND
Ground for control circuit
14
15
OUT1
Driver output 1
16
PGND
Power ground
Apr. 2011
Hall sensor input +
Hall sensor bias regulator
Lock and rotation setting capacitor terminal
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Functional Block Diagram
V+
VMIN
6 (7)
V+
V+
51k
11 (12)
7 (8)
93k
90k
4 (5)
56k
18k
54k
CF
HB
RD
Predriver
V+
PWM
FG
3 (4)
42k
RADJ
Thermal
Shutdown
Triangle Wave
104k
2 (3)
5 (6)
VCC
Control
Circuit
9 (10)
Hall
Bias
1 (1)
OUT2
8 (9)
HIN+
10 (11)
HIN-
Lock Shutdown
and
Auto Restart
Hysteresis Amp
12 (13)
14 (15)
CT
OUT1
(16)
13 (14)
GND
PGND
A (B)
A HTSSOP-14
B SSOP-16
Figure 3. Functional Block Diagram of AM4962
Truth Table (Note 1)
Items
IN-
IN+
1
H
L
2
L
H
3
H
L
4
L
H
5
H
L
6
L
H
CF
CT
OUT1
OUT2
FG
Mode
H
L
L
Rotation
L
H
Off
PWM off
Off
L
L
L
Off
Off
Rotation Recirculate
PWM off
H
Off
L
Off
H
Off
L
L
H
L
H
Lock Protection
Note 1: VCF(H)=5V, VCF(L) =1V, VCT(H)=5V, VCT(L) =0
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
4
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Ordering Information
AM4962
Package
-
Circuit Type
G1: Green
Package
GH: HTSSOP-14
GS: SSOP-16
Blank: Tube
TR: Tape & Reel
Temperature
Range
Part Number
Marking ID
Packing
Type
AM4962GH-G1
AM4962GH-G1
Tube
AM4962GHTR-G1
AM4962GH-G1
Tape & Reel
AM4962GS-G1
AM4962GS-G1
Tube
AM4962GSTR-G1
AM4962GS-G1
Tape & Reel
HTSSOP-14
-30 to 90°C
SSOP-16
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Absolute Maximum Ratings (Note 2)
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
18
V
Output Current
IOUT
1.0
A
Output Voltage
VOUT
18
V
HB Output Current
IHB
10
mA
RD Output Voltage
VRD
18
V
FG Output Voltage
VFG
18
V
RD Output Current
IRD
10
mA
FG Output Current
IFG
10
mA
Power Dissipation
PD
Storage Temperature Range
TSTG
Thermal Resistance
(Junction to Ambient)
θJA
SSOP-16
0.8
W
HTSSOP-14
1.1
W
-55 to 150
°C
SSOP-16
156
HTSSOP-14
114
°C/W
ESD (Human Body Model)
ESD
2000
V
ESD (Machine Model)
ESD
250
V
Note 2: 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.
Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage
VCC
3.5
12
16
V
Hall Input Voltage + (Note 3)
VIN+
0.2
3
V
Hall Input Voltage - (Note 3)
VIN-
0.2
3
V
VCC-1
V
90
°C
PWM High Level Voltage
Ambient Temperature
VPWM
TA
-30
Note 3: Hall input voltage range includes the amplitude of signal.
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
6
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Electrical Characteristics
(VCC=12V, TA=25°C, unless otherwise specified.)
Parameter
Symbol
Conditions
Min
Typ
Max
IQ1
VCT=0
10.18
15
18.76
IQ2
VCT=5V
5.38
8
10.55
Quiescent Current
Unit
mA
Output Saturation Voltage at High
Side
VSATH
ISOURCE=200mA
1.0
1.17
V
Output Saturation Voltage at Low
Side
VSATL
ISINK=200mA
0.2
0.3
V
18
25
32
kHz
CPWM Frequency
fOSC
CF High Level Voltage
VCFH
VPWM=0
3.2
3.6
3.75
V
CF Low Level Voltage
VCFL
VPWM=5
1.83
1.95
2.15
V
VMIN Voltage
VMIN
3.4
3.7
4.0
V
RADJ Pin Voltage
VADJ
3.6
3.8
4.4
V
Hall Input Hysteresis
VHYS
±10
±20
mV
Hall Bias Voltage
VHB
1.1
1.25
1.4
V
CT High Level Voltage
VCTH
3.55
3.7
3.88
V
CT Low Level Voltage
VCTL
1.55
1.7
1.85
V
CT Charge Current
ICHG
1.5
2
2.85
µA
CT Discharge Current
IDHG
0.14
0.2
0.285
µA
CT Charge and Discharge Ratio
RCD
ICHG/IDHG
8.5
10
14.5
FG Output Low Level Voltage
VFGL
IFG=5mA
0.2
0.3
V
FG Leakage Current
ILFG
VFG=12V
30
µA
RD Output Low Level Voltage
VRDL
IRD=5mA
0.3
V
RD Leakage Current
ILRD
VRD=12V
30
µA
Apr. 2011
VPWM=0
IHB=5mA
Rev. 1. 2
0.2
BCD Semiconductor Manufacturing Limited
7
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
20
20
16
16
Quiescent Current (mA)
Quiescent Current (mA)
Typical Performance Characteristics
12
8
VCC=12V
4
12
8
o
TA=25 C
4
IQ1(VCT=L)
IQ1(VCT=L)
IQ2(VCT=H)
IQ2(VCT=H)
0
-50
-25
0
25
50
75
100
0
125
4
6
8
O
Ambient Temperature ( C)
Figure 4. Quiescent Current vs. Ambient Temperature
12
14
16
18
Figure 5. Quiescent Current vs. Supply Voltage
1.2
2.0
o
VCC=12V, TA=25 C
Allowable Power Dissipation (W)
VSATH1
Output Saturation Voltage (V)
10
Supply Voltage (V)
VSATH2
1.6
VSATL1
VSATL2
1.2
0.8
0.4
Package: HTSSOP-14
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
700
800
900
0.0
1000
-20
20
40
60
80
90 100
Ambient Temperature ( C)
Figure 6. Output Saturation Voltage vs.
Output Current
Apr. 2011
0
O
Output Current (mA)
Figure 7. Power Dissipation vs.
Ambient Temperature
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
8
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Typical Performance Characteristics (Continued)
Allowed Power Dissipation (W)
1.2
Package: SSOP-16
1.0
0.8
0.6
0.4
0.2
0.0
-20
0
20
40
60
80
90 100
120
O
Ambient Temperature ( C)
Figure 8. Power Dissipation vs. Ambient Temperature
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
9
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Operating Diagram
Figure 9. Operating Diagram of AM4962
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
10
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Typical Application (Note 4)
L1
100
Max. Duty Cycle
AM4962
VCC
D1
V+
2 (3)
3 (4)
C1
1μF
4 (5)
5 (6)
C3
1μF
OUT2
VCC
VMIN
PWM
OUT1
GND
14 (15)
80
Output Duty Cycle (%)
1 (1)
13 (14)
12 (13)
CT
RADJ
11 (12)
10 (11)
CF
HIN-
6 (7)
FG
HB
7 (8)
RD PGND HIN+
9 (10)
Hall
C2
0.47μF
8 (9)
60
40
Slope K
20
Min. Duty Cycle
0
0
10
20
30
40
50
60
70
80
90
Input PWM Duty Cycle (%)
Figure 10
Application 1 (Default)
VCC
D1
L1
V+
D2
D3
AM4962
1 (1)
C1
1 F
2 (3)
R1
3 (4)
4 (5)
R2
C3
1 F
R3
5 (6)
R4
OUT2
OUT1
VCC
GND
VMIN
CT
PWM
RADJ
CF
HIN-
6 (7)
FG
HB
7 (8)
RD PGND HIN+
14 (15)
V+
13 (14)
12 (13)
R5
11 (12)
10 (11)
9 (10)
R6
Hall
8 (9)
C2
0.47 F
Application 2 (Slope K and Minimum/Maximum Duty Adjustable)
Note: D2 and D3 are recommended to be used when the current in coil L1 is higher than 300mA.
Figure 11. Typical Applications of AM4962
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
100
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Typical Application (Note 4, Continued)
Note 4 (Refer to application circuit 2 unless otherwise noted.):
Adjust slope K of output PWM's duty vs. input PWM's duty
1. The default K is about 0.8 (application circuit 1).
2. Adding R5 can increase K (see Figure 12).
3. Adding R6 can decrease K (see Figure 13).
100
100
R5=270k, R1, R2, R3, R4, R6 Open
R5=560k, R1, R2, R3, R4, R6 Open
R1, R2, R3, R4, R5, R6 Open
80
Output Duty Cycle (%)
Output Duty Cycle (%)
80
60
40
20
0
60
40
R6=100k, R1, R2, R3, R4, R5 Open
R6=270k, R1, R2, R3, R4, R5 Open
R1, R2, R3, R4, R5, R6 Open
20
0
10
20
30
40
50
60
70
80
90
0
100
0
10
20
Input PWM Duty Cycle (%)
30
40
50
60
70
80
90
100
Input PWM Duty Cycle (%)
Figure 12
Figure 13
Adjust minimum duty of output PWM:
1. The default minimum duty of output PWM is about 20% (application circuit 1, Figure 10).
2. Decreasing R2 can increase minimum output PWM duty (see Figure 14).
3. Adding R5 can decrease minimum output PWM duty (see Figure 15).
100
80
Minimum Duty Cycle (%)
Minimum Duty Cycle (%)
R1, R2, R3, R4, R6 open
R1=15k,R3,R4,R5,R6 open
70
60
50
40
30
80
60
40
20
20
0
10
3.5k
4.0k
4.5k
5.0k
5.5k
6.0k
390K
6.5k
Figure 14
Apr. 2011
560K
820K
1M
2.2M
4.7M
8.2M
R5 (Ω)
R2 (Ω)
Figure 15
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
12
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Typical Application (Note 4, Continued)
Adjust maximum duty of output PWM:
1. The default maximum output PWM duty is 100% (application circuit 1).
2. Adding R3 can decrease maximum output PWM duty (see Figure 16).
3. Adding R4 can increase maximum output PWM duty (see Figure 17).
100
100
R3=390k, R1, R2, R4, R5, R6 Open
R3=1M, R1, R2, R4, R5, R6 Open
R1, R2, R3, R4, R5, R6 Open
80
Output Duty Cycle (%)
Output Duty Cycle (%)
80
60
40
40
R4=150k, R1, R2, R3, R4, R6 Open
R4=390k, R1, R2, R3, R5, R6 Open
R1, R2, R3, R4, R5, R6 Open
20
20
0
60
0
10
20
30
40
50
60
70
80
90
0
100
Figure 16
Apr. 2011
0
10
20
30
40
50
60
70
80
90
100
PWM (%)
PWM (%)
Figure 17
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
13
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Mechanical Dimensions
HTSSOP-14
Unit: mm(inch)
1. 470(0. 058)
1. 570(0. 062)
6. 350(0. 250)
6. 550(0. 258)
1. 450(0. 057)
1. 550(0. 061)
6. 200(0. 244)
6. 600(0. 260)
4. 300(0. 169)
4. 500(0. 177)
SEE
DETAIL A
0. 750(0. 030)
0. 850(0. 033)
0.200(0.008) or 1.480(0.058)
0.280(0.011) or 1.610(0.063)
0.100(0.004)
0.190(0.007)
0. 650(0. 026)
BSC
1. 300(0. 051)
BSC
1. 200(0. 047)
MAX
0. 340(0. 013)
0. 540(0. 021)
0. 200(0. 008)
MIN
10
14
R0. 090(0. 004)
MIN
BASE METAL
0.100(0.004)
0.150(0.006)
0.200(0.008) or 1.470(0.058)
0.240(0.009) or 1.570(0.062)
R0. 090(0. 004)
MIN
0. 250(0. 010)
BSC
0.050(0. 002)
0.200(0. 008)
0
8
0. 450(0. 018)
0. 750(0. 030)
0.900(0. 035)
1.050(0. 041)
1. 000(0. 039)
REF
DETAIL A
Note: Eject hole, oriented hole and mold mark is optional.
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
14
Data Sheet
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
AM4962
Mechanical Dimensions (Continued)
SSOP-16
Unit: mm(inch)
o
o
Φ
o
o
o
o
Apr. 2011
Rev. 1. 2
BCD Semiconductor Manufacturing Limited
15
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