NOT RECOMMENDED FOR NEW DESIGN NO ALTERNATE PART
AM4962
SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER
Description
Pin Assignments
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.
(Top View)
PGND
PGND
The AM4962 is available in HTSSOP-14 and SSOP-16 packages.
Features
•
•
•
•
•
•
•
•
•
•
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
OUT2
1
14
OUT1
VCC
2
13
GND
VMIN
3
12
CT
PWM
4
11
RADJ
CF
5
10
HIN-
FG
6
9
HB
7
8
HIN+
RD
HTSSOP-14
(Top View)
OUT2
1
16
PGND
NC
2
15
OUT1
VCC
3
14
GND
VMIN
4
13
CT
5
12
RADJ
HINHB
PWM
•
•
CPU Cooler Fan in PC
Brushless DC Motor Driver
CF
6
11
FG
7
10
RD
8
9
HIN+
SSOP-16
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Typical Applications Circuit (Note 1)
L1
100
Max. Duty Cycle
AM4962
D1
V+
2 (3)
3 (4)
C1
1µF
4 (5)
5 (6)
C3
1µF
OUT2
VCC
OUT1
GND
VMIN
CT
PWM
RADJ
CF
HIN-
6 (7)
FG
7 (8)
RD PGND HIN+
HB
14 (15)
80
Output Duty Cycle (%)
1 (1)
VCC
13 (14)
12 (13)
11 (12)
10 (11)
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
100
Input PWM Duty Cycle (%)
Application 1 (Default)
VCC
D1
L1
V+
D2
D3
AM4962
1 (1)
C1
1µF
2 (3)
R1
3 (4)
4 (5)
R2
C3
1 µF
R3
5 (6)
R4
OUT2
OUT1
VCC
GND
VMIN
PWM
CT
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
0.47µF
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.
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Typical Applications Circuit (Note 1) (Continued)
Note 1
(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
2. Adding R5 can increase K
3. Adding R6 can decrease K
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 (%)
Adjust minimum duty of output PWM:
1. The default minimum duty of output PWM is about 20%
2. Decreasing R2 can increase minimum output PWM duty
3. Adding R5 can decrease minimum output PWM duty
80
100
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
10
3.5k
4.0k
4.5k
5.0k
5.5k
6.0k
6.5k
0
R2 (Ω)
AM4962
Document number: DS43019 Rev. 1 - 3
390K
560K
820K
1M
2.2M
4.7M
8.2M
R5 (Ω)
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AM4962
Typical Applications Circuit (Note 1) (Continued)
Adjust maximum duty of output PWM:
1. The default maximum output PWM duty is 100%.
2. Adding R3 can decrease maximum output PWM duty.
3. Adding R4 can increase maximum output PWM duty.
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
100
0
0
10
20
30
40
50
60
70
80
90
100
PWM (%)
PWM (%)
Pin Descriptions
Pin Number
Pin Name
Function
HTSSOP-14
SSOP-16
1
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
AM4962
Document number: DS43019 Rev. 1 - 3
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Hall sensor input +
Hall sensor bias regulator
Lock and rotation setting capacitor terminal
August 2020
© Diodes Incorporated
AM4962
Functional Block Diagram
V+
VMIN
6 (7)
V+
V+
51k
11 (12)
7 (8)
93k
4 (5)
90k
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-
Hysteresis Amp
Lock Shutdown
and
Auto Restart
14 (15)
13 (14)
12 (13)
CT
OUT1
(16)
GND
PGND
A (B)
A HTSSOP-14
B SSOP-16
Truth Table (Note 2)
Items
IN-
IN+
1
H
L
CF
CT
OUT1
OUT2
FG
Mode
H
L
L
Rotation
L
H
Off
PWM off
Off
L
L
Rotation Recirculate
L
Off
Off
PWM off
H
Off
L
Off
H
Off
L
2
L
H
L
3
H
L
H
4
L
H
5
H
L
L
6
Note 2:
L
H
H
Lock Protection
VCF(H)=5V, VCF(L) =1V, VCT(H)=5V, VCT(L) =0
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Absolute Maximum Ratings (Note 3)
Symbol
Note 3:
Parameter
Value
Unit
VCC
Supply Voltage
18
V
IOUT
Output Current
1.0
A
VOUT
Output Voltage
18
V
IHB
HB Output Current
10
mA
VRD
RD Output Voltage
18
V
VFG
FG Output Voltage
18
V
IRD
RD Output Current
10
mA
IFG
FG Output Current
10
mA
PD
Power Dissipation
TSTG
Storage Temperature Range
θJA
Thermal Resistance
(Junction to Ambient)
SSOP-16
0.8
W
HTSSOP-14
1.1
W
-55 to +150
°C
SSOP-16
156
HTSSOP-14
114
°C/W
ESD
ESD (Human Body Model)
2000
V
ESD
ESD (Machine Model)
250
V
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
Symbol
Min
Typ
Max
Unit
VCC
Supply Voltage
3.5
12
16
V
VIN+
Hall Input Voltage + (Note 4)
0.2
—
3
V
VIN-
Hall Input Voltage - (Note 4)
0.2
—
3
V
PWM High Level Voltage
—
—
VCC-1
V
Ambient Temperature
-30
—
+90
°C
VPWM
TA
Note 4:
Parameter
Hall input voltage range includes the amplitude of signal.
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Electrical Characteristics (VCC=12V, TA=+25°C, unless otherwise specified.)
Symbol
Parameter
IQ1
Conditions
Min
Typ
Max
VCT=0
10.18
15
18.76
VCT=5V
5.38
8
10.55
Quiescent Current
IQ2
Unit
mA
VSATH
Output Saturation Voltage at High Side
ISOURCE=200mA
—
1.0
1.17
V
VSATL
Output Saturation Voltage at Low Side
ISINK=200mA
—
0.2
0.3
V
fOSC
CPWM Frequency
—
18
25
32
kHz
VCFH
CF High Level Voltage
VPWM=0
3.2
3.6
3.75
V
VCFL
CF Low Level Voltage
VPWM=5
1.83
1.95
2.15
V
VMIN
VMIN Voltage
—
3.4
3.7
4.0
V
VADJ
RADJ Pin Voltage
VPWM=0
3.6
3.8
4.4
V
VHYS
Hall Input Hysteresis
—
—
±10
±20
mV
VHB
Hall Bias Voltage
IHB=5mA
1.1
1.25
1.4
V
VCTH
CT High Level Voltage
—
3.55
3.7
3.88
V
VCTL
CT Low Level Voltage
—
1.55
1.7
1.85
V
ICHG
CT Charge Current
—
1.5
2
2.85
µA
IDHG
CT Discharge Current
—
0.14
0.2
0.285
µA
RCD
CT Charge and Discharge Ratio
ICHG/IDHG
8.5
10
14.5
—
VFGL
FG Output Low Level Voltage
IFG=5mA
—
0.2
0.3
V
ILFG
FG Leakage Current
VFG=12V
—
—
30
µA
VRDL
RD Output Low Level Voltage
IRD=5mA
—
0.2
0.3
V
ILRD
RD Leakage Current
VRD=12V
—
—
30
µA
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Performance Characteristics
Quiescent Current vs. Supply Voltage
20
20
16
16
Quiescent Current (mA)
Quiescent Current (mA)
Quiescent Current vs. Ambient Temperature
12
8
VCC=12V
IQ1(VCT=L)
IQ2(VCT=H)
4
0
-50
-25
0
25
50
75
100
12
8
TA=25oC
IQ1(VCT=L)
IQ2(VCT=H)
4
0
125
4
6
8
O
Ambient Temperature ( C)
Output Saturation Voltage vs.
Output Current
14
16
18
1.2
VSATH1
VSATH2
VSATL1
VSATL2
1.6
o
VCC=12V, TA=25 C
Allowable Power Dissipation (W)
Output Saturation Voltage (V)
12
Power Dissipation vs.
Ambient Temperature
2.0
1.2
0.8
0.4
0.0
10
Supply Voltage (V)
Package: HTSSOP-14
1.0
0.8
0.6
0.4
0.2
0
100
200
300
400
500
600
700
800
900
1000
0.0
-20
0
20
40
60
80
90 100
Ambient Temperature (OC)
Output Current (mA)
Power Dissipation vs. Ambient Temperature
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
Ambient Temperature (OC)
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Operating Diagram
VPWM adjustable voltage
fOSC=25kHz
VH=3.6V
VMIN
VL=2.0V
Low Speed
PWM Variable
High Speed
All parameters are tested under VCC=12V
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Ordering Information
AM4962 XX XX - XX
GH : HTSSOP-14
GS : SSOP-16
Package
Packing
RoHS/Green
Blank : Tube
TR : Tape & Reel
G1 : Green
Package
Product Name
Temperature
Range
Part Number
Marking ID
Packing
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
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Package Outline Dimensions (All dimensions in mm(inch))
Please see http://www.diodes.com/package-outlines.html for the latest version.
(1)
Package Type: HTSSOP-14
1. 470(0. 058)
1. 570(0. 062)
6. 350(0. 250)
6. 550(0. 258)
Φ 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
Φ 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.
AM4962
Document number: DS43019 Rev. 1 - 3
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AM4962
Package Outline Dimensions (All dimensions in mm(inch)) (Continued)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(2)
Package Type: SSOP-16
3.800(0.150)
4.000(0.157)
7°
0.200(0.008)
0.300(0.012)
7°
0.635(0.025)
BSC
4.700(0.185)
Φ 0.800(0.031)
5.100(0.201)
0.100(0.004)
0.900(0.035)
1.000(0.039)
0.250(0.010)
1.350(0.053)
1.750(0.069)
0.400(0.016)
1.270(0.050)
5.800(0.228)
6.200(0.244)
SEE
DETAIL A
1.350(0.053)
1.550(0.061)
8°
0.150(0.006)
0°
R0.150(0.006)
0.250(0.010)
8°
0.250(0.010)
R0.150(0.006)
8°
0.650(0.026)
0.750(0.030)
0.200(0.008)
0.250(0.010)
0.020(0.001)
0.050(0.002)
Note: Eject hole, oriented hole and mold mark is optional.
AM4962
Document number: DS43019 Rev. 1 - 3
DETAIL A
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IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2020, Diodes Incorporated
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AM4962
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