20160325162458233

APX9781
Single-Phase digital calibration Motor Pre-Driver for Fan Motor
Features
General Description
•
Single Phase Fan Pre-Driver
•
Easy digital programming (EDP.)
•
Built-in direct PWM input terminal
•
Built-in soft start function
•
Multi Signal Output for SOUT (FG,RD,FG+RD,Low
The APX9781 is a single phase full wave DC brushless
motor driver with variable speed control that works with
a speed feedback signal and current limit features suitable for the fan of server system and high power cooling
fan.APX9781 currect protection can be set via digital
programming. Multi PWM curve, soft start, output signal,
the lock protection.The APX9781 is available in TSSOP16 package (see Pin Configuration).Using digital calibration (OTP), the design speed curve for more easily.
RPM Alarm )
•
Built-in Current Limit
•
LDO 5V output
•
Low Quiescent Current
•
Built-in Lock Protection and Auto Restart Function
•
Thermal shut down circuit
•
Lead Free and Green Device Available (RoHS
Compliant)
Pin Configuration
Applications
•
•
CPU And Server Cooling Fans
OUT2P 1
16 OUT1P
OUT2N 2
15 OUT1N
VCC 3
14 SENSE
VLIM 4
NC 5
Variable Speed Control Fans
TSSOP-16
13 GND
12 NC
5VREG 6
11 IN+
PWM 7
10 HB
SOUT 8
9 IN-
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain
the latest version of relevant information to verify before placing orders.
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Aug., 2015
1
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APX9781
Ordering and Marking Information
Package Code
O: TSSOP - 16
Operating Ambient Temperature Range
I : -40 to 95 oC
Handling Code
TR : Tape & Reel
Assembly Material
G: Halogen and Lead Free Device
APX9781
Assembly Material
Handling Code
Temperature Range
Package Code
Source Code
APX9781 O :
APX9781
XXX XXXXX
XXX - Source Code
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings
Symbol
VCC
VOUTP, OUTN
(Note 1)
Parameter
Ratings
Unit
VCC Pin Supply Voltage (VCC to GND)
-0.3 to 18
V
Output Pin Voltage
-0.3 to 18
V
50
mA
IOUTP
Output Pin Sink and Source Current
IOUTN
Output Pin Sink and Source Current
50
mA
VPWM
PWM Pin Input Voltage (PWM to GND)
-0.3 to 7
V
SENSE/VLIM Pin Withstand Voltage (SENSE/VLIM to SGND)
-0.3 to 7
V
VSOUT
SOUT Pin Output Voltage
-0.3 to 18
V
ISOUT
SOUT Pin Maximum Output Sink Current
10
mA
HB Pin Output Current
10
mA
5VREG Pin Output Source Current
20
mA
Maximum Junction Temperature
150
o
-65 to 150
o
260
o
VSENSE/VLIM
IHB
I5VREG
TJ
TSTG
TSDR
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
C
C
C
Note1: Stresses beyond 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 rating conditions for extended periods may affect
device reliability.
Thermal Characteristics
Symbol
RTH,JA
PD
Parameter
Typical Value
Thermal Resistance-Junction to Ambient (Note 2)
TSSOP-16
Power Dissipation, TA=25oC
156
0.8
Unit
o
C/W
W
Note 2: Mounted on a board (60x38x1.6t mm, Glass epoxy).
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APX9781
Recommended Operating Conditions (Note4)
Symbol
Parameter
Range
Unit
VCC
VCC Pin Supply Voltage Range
4 to 15
V
VPWM
PWM Pin Input Voltage Range
0 to V5VREG
V
VVLIM
VLIM Pin Input Voltage Range
0 to V5VREG
V
VICM
Hall Input (IN+, IN-) Common-Phase Input Voltage Range
TA
TJ
0.2 to 3
Ambient Temperature
Junction Temperature
V
-40 to 105
o
-40 to 125
o
C
C
Note 4: Mounted on a board (60x38x1.6t mm, Glass epoxy).
Electrical Characteristics
Symbol
(VCC = 12V, TA = 25°C, unless otherwise specified)
Parameter
Test Conditions
APX9781
Min
Typ
Max
Unit
SUPPLY CURRENT
V5VREG
VHB
ICC1
5VREG Pin Output Voltage
I5VREG = 5mA
4.85
5
5.15
V
HB Pin Output Voltage
IHB = 5mA
1.15
1.3
1.45
V
Rotation Mode
-
9
15
Lock Protection Mode
-
9
15
Operating Current
ICC2
mA
LOCK PROTECTION
TON
Lock Detection On Time
0.1
-
2
s
TOFF
Lock Detection Off Time
3
-
18
s
OUTPUT DRIVERS
VOUTPH OUT_P Output Low Voltage
IOUTP = 20mA
VCC-2
VCC-1.5
-
V
VOUTPL OUT_P Output Low Voltage
IOUTN = 20mA
-
0.5
1
V
VOUTNH OUT_N Output High Voltage
IOUTN = -20mA
VCC-2
VCC-1.5
-
V
VOUTNL OUT_N Output Low Voltage
IOUTN = 20mA
-
0.5
1
V
VSOUT
SOUT Pin Low Voltage
ISOUT = 5mA
-
0.2
0.3
V
ISOUTL
SOUT Pin Leakage Current
VSOUT = 12V
-
<0.1
1
μA
PWM CONTROL
VPWMH
PWM Input High Level Voltage
2.5
-
VCC+0.3
V
VPWML
PWM Input Low Level Voltage
-0.3
-
0.8
V
IPWMH
PWM High Input Current
PWM=5V
-
0
-
µA
IPWML
PWM Low Input Current
PWM=GND
-
-10
-20
µA
FPWM
PWM Input Frequency
1
-
50
kHz
-
10
20
mV
Over Thermal Protection Temperature
-
165
-
Over Thermal Protection Hysteresis
-
30
-
HALL SENSITIVITY
VHN
Hall Input Sensitivity
Zero to peak including offset and
hysteresis
THERMAL PROTECTION
OTS
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Aug., 2015
3
o
C
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APX9781
Pin Descriptions
PIN
FUNCTION
NO.
NAME
1
OUT2P
2
OUT2N
3
VCC
Supply Voltage Input.
4
VLIM
Current-Limit Setting. Use a voltage divider from 5VREG to set VLIM pin voltage to set current limit
value.
High side external H-bridge Driver. Connect this pin to the upper P-MOSFET gate of OUT2.
Low side external H-bridge Driver. Connect this pin to the lower N-MOSFET gate of OUT2.
5
NC
6
5VREG
7
PWM
8
SOUT
9
IN-
Hall Input -. Connect to hall element negative output.
10
HB
Hall Bias. This is a 1.3V constant–voltage output for hall element bias.
Hall Input +. Connect to hall element positive output.
5V Regulator Output. This is a 5V constant-voltage output for application circuit biases.
PWM Signal Input Terminal. Please let it be floating when not be used.
Multi Signal Output (FG, RD, FG+RD, Low RPM Alarm ). This pin is an open-collector output.
11
IN+
12
NC
13
GND
14
SENSE
Current-Limit Input. Connect to external N-MOSFET source pins and connect a resistor SENSE to
GND to sense coil current
15
OUT1N
Low side external H-bridge Driver. Connect this pin to the lower N-MOSFET gate of OUT1.
16
OUT1P
High side external H-bridge Driver. Connect this pin to the upper P-MOSFET gate of OUT1.
Control stage GND.
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APX9781
Block Diagram
VCC
5VREG
LDO 5V
STD
VCC
OUT1P
OUT2P
HB
HB
1.3V
Clock
Digital Control
DRIVER
OUT1N
IN+
OUT2N
IN-
SENSE
VLIM
Current Limit
SOUT
OTP
PWM
GND
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APX9781
Typical Application Circuit
Circuit 1: Direct PWM Input Speed Control
VIN
CVM
10~10µF
OUT2P
OUT1P
OUT2N
OUT1N
RFG=10KΩ
VCC
SOUT
C1
1~4.7µF
SOUT
RCL
0.1Ω
RSENSE
330Ω
SENSE
CSENSE
10nF
PWM
PWM Input
5VREG
C5VREG
1µF
OUT1P
OUT1P
OUT1N
OUT1N
OUT2P
OUT2P
OUT2N
OUT2N
VLIM
HB
IN+
GND
IN-
CHN
HALL
Note : Insert the capacitor CHN to avoid noise coupling at power switch.
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APX9781
Functional Descriptions
Variable multi-speed Control
Signal Output (SOUT) PIN
The APX9781 can be selected open or closed loop and
The SOUT pin is an open drain output connecting a pull
multi-speed curve.
up resistor to a high level voltage for the detection function.
This detection feature includes four modes (FG,RD,
RPM
FG+RD,Low RPM Alarm ) can be selected.
Easy digital programming (EDP.)
The Easy Digital Program is called "EDP.". Help engineers design a suitable speed curve, without changing
open-loop
multi-speed curve
closed-loop
Enable MIN
Disable MIN
the hardware. Achieve Low-cost, high-value design, just
new parameters can be quickly downloaded to the IC.
EDP. including I2C hardware and applications. Use
method please contact ANPEC service personnel.
PWM
Lockup Protection and Automatic Restart
PWM Speed Control (fixed-frequency output)
The APX9781 provides the lockup protection and automatic restart functions for preventing the coil burn-out
It is possible to change rotation speed of the motor by
switching output transistor. The on-duty of switching de-
when the fan is locked. This IC has an internal counter to
determine the shutdown time (Time-OFF) and restart time
pends on the signal from input to PWM terminal.
The output PWM frequency is fixed frequency.(25KHZ)
(Time-ON). During shutdown time, the output drivers keep
turning off for Time-OFF and then enter the restart time.
Soft Start Function
During the restart time, one output is high and the other is
low, which makes a torque for fan rotation. The restart
The APX9781 provides an internal programmable softstart circuitry to control the current rise rate and limit the
time has Time-ON. If the locked condition is not removed,
the shutdown/restart process will be recurred until the
inrush current during startup. Soft-start when the power
is turned on and restart. The typical soft-start control range
locked condition is released.
Time-OFF
= 3S ~ 18S
Time-ON
= 0.1S ~ 2S
of 1 to 30 seconds.
Current Limit Function
The APX9781 is equipped with external current limit circuit.
APX9781 can set TON and TOFF values.
The external current limit circuit works when SENSE pin
voltage is higher than VLIM. VLIM is defined in APX9781
IN-
internal circuit and its typical value is 200mV.
IN+
Limit Current = VLIM / RF
Time-OFF
Time-OFF
Where:
OUT2
VLIM = internal reference voltage for current limit
RCL = SENSE pin resistor
Time-ON
For example:
OUT1
VLIM = 0.2V, RF = 0.1Ω
Limit Current = 2A
FG
PCB layout wiring of RCL between N-MOSFET source
Lock Lock Detection
pins, SENSE pin and GND must to be short to set an
accurate limit current value.
Release Reset
Copyright  ANPEC Electronics Corp.
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APX9781
Functional Descriptions (Cont.)
Thermal Protection
The APX9781 is designed with a thermal protection to
protect the IC from the damage of over temperature. When
internal junction temperature reaches 175oC, the output
devices will be switched off. When the IC’s junction temperature cools by 30oC, the thermal sensor will turn the
output devices on again resulting in a pulsed output during continuous thermal overload.
Copyright  ANPEC Electronics Corp.
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APX9781
Package Information
TSSOP-16
D
e
E
E1
SEE VIEW A
C
0.25
A
A2
b
GAUGE PLANE
A1
SEATING PLANE
VIEW A
S
Y
M
B
O
L
L
TSSOP-16
MILLIMETERS
MIN.
INCHES
MIN.
MAX.
A
MAX.
0.047
1.20
A1
0.05
0.15
0.002
0.006
A2
0.80
1.05
0.031
0.041
b
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.008
D
4.90
5.10
0.193
0.201
E
6.20
6.60
0.244
0.260
E1
4.30
4.50
0.169
0.177
e
L
0
0.65 BSC
0.026 BSC
0.45
0.75
0.018
0o
8o
0o
0.030
8o
Note : 1. Follow from JEDEC MO-153 AB.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 6 mil per side.
3. Dimension "E1" does not include inter-lead flash or protrusions.
Inter-lead flash and protrusions shall not exceed 10 mil per side.
Copyright  ANPEC Electronics Corp.
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APX9781
Carrier Tape & Reel Dimensions
P0
P2
P1
A
B0
W
F
E1
OD0
K0
A0
A
OD1 B
B
T
SECTION A-A
SECTION B-B
H
A
d
T1
Application
A
H
T1
C
d
D
W
E1
F
330.0±2.00
50 MIN.
12.4+2.00
-0.00
13.0+0.50
-0.20
1.5 MIN.
20.2 MIN.
12.0±0.30
1.75±0.10
5.50±0.05
4.00±0.10
8.00±0.10
2.00±0.05
1.5+0.10
-0.00
1.5 MIN.
0.6+0.00
-0.40
6.80±0.20
5.40±0.20
1.60±0.20
TSSOP-16
(mm)
Devices Per Unit
Package Type
Unit
Quantity
TSSOP- 16
Tape & Reel
2500
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APX9781
Taping Direction Information
TSSOP-16
USER DIRECTION OF FEED
Classification Profile
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APX9781
Classification Reflow Profiles
Profile Feature
Sn-Pb Eutectic Assembly
Pb-Free Assembly
100 °C
150 °C
60-120 seconds
150 °C
200 °C
60-120 seconds
3 °C/second max.
3°C/second max.
183 °C
60-150 seconds
217 °C
60-150 seconds
See Classification Temp in table 1
See Classification Temp in table 2
Time (tP)** within 5°C of the specified
classification temperature (Tc)
20** seconds
30** seconds
Average ramp-down rate (Tp to Tsmax)
6 °C/second max.
6 °C/second max.
6 minutes max.
8 minutes max.
Preheat & Soak
Temperature min (Tsmin)
Temperature max (Tsmax)
Time (Tsmin to Tsmax) (ts)
Average ramp-up rate
(Tsmax to TP)
Liquidous temperature (TL)
Time at liquidous (tL)
Peak package body Temperature
(Tp)*
Time 25°C to peak temperature
* Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum.
** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum.
Table 1. SnPb Eutectic Process – Classification Temperatures (Tc)
Package
Thickness
<2.5 mm
≥2.5 mm
Volume mm
<350
235 °C
220 °C
3
Volume mm
≥350
220 °C
220 °C
3
Table 2. Pb-free Process – Classification Temperatures (Tc)
Package
Thickness
<1.6 mm
1.6 mm – 2.5 mm
≥2.5 mm
Volume mm
<350
260 °C
260 °C
250 °C
3
Volume mm
350-2000
260 °C
250 °C
245 °C
3
3
Volume mm
>2000
260 °C
245 °C
245 °C
Reliability Test Program
Test item
SOLDERABILITY
HOLT
PCT
TCT
HBM
MM
Latch-Up
Method
JESD-22, B102
JESD-22, A108
JESD-22, A102
JESD-22, A104
MIL-STD-883-3015.7
JESD-22, A115
JESD 78
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Description
5 Sec, 245°C
1000 Hrs, Bias @ Tj=125°C
168 Hrs, 100%RH, 2atm, 121°C
500 Cycles, -65°C~150°C
VHBM≧2KV
VMM≧200V
10ms, 1 tr≧100mA
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APX9781
Customer Service
Anpec Electronics Corp.
Head Office :
No.6, Dusing 1st Road, SBIP,
Hsin-Chu, Taiwan
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
2F, No. 11, Lane 218, Sec 2 Jhongsing Rd.,
Sindian City, Taipei County 23146, Taiwan
Tel : 886-2-2910-3838
Fax : 886-2-2917-3838
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