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PDF APX9370 Data sheet ( Hoja de datos )
| Número de pieza | APX9370 | |
| Descripción | Three-Phase Sensor-Less Fan Motor Driver | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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【深圳市登辰易科技有限公司-------电子元件选型推荐】
WWW.DCY-CHINA.COM
APX9370
Three-Phase Sensor-Less Fan Motor Driver
Features
General Description
• Three-Phase Full-Wave Sensor-Less Drive
The APX9370 is a three phase full wave DC brushless
• Low Quiescent Current (6mA Typical)
motor driver with PWM variable speed control, current
• Built-In External PWM Speed Function
limit and soft start features suitable for the fan of personal
• Minimum Speed Setting
computer¡¦s power supply, CPU cooler and server. Ad-
• Direct PWM Input Speed Control (Circuit 2)
equate SS pin capacitor could reduce the peak current at
• Built-in Current Limit Circuit (2A Typical)
power on and lock-restart mode. The PWM control sys-
• Built-in Lock Protection and Auto Restart Function tem works depending on the comparison among the volt-
• Soft Start Function
age of SET, MIN, and OSC. The device is equipped with a
• FG (Rotation Speed Detection) Output
built-in lock protection, which protects the fan when it is
• Built-in Thermal Protection Circuit
locked. It also has rotation speed detection output and
• Lead Free and Green Device Available (RoHS thermal protection function. The APX9370 is available in
Compliant)
SSOP-16 package (see Pin Configuration).
Applications
• CPU Cooler Fans
• Instrumentation Fans
• Variable Speed Control Fans
Pin Configuration
VO 1
UO 2
VCC 3
MIN 4
SET 5
OSC 6
FG 7
COMIN 8
SSOP-16
(Top View)
16 GND
15 WO
14 5VREG
13 SS
12 CT
11 SC
10 COMOUT
9 FN
Ordering and Marking Information
APX9370
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
N : SSOP-16
Operating Ambient Temperature Range
I : -40 to 90 oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APX9370 N :
APX9370
XXXXX
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).
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 - Sep., 2013
1
www.anpec.com.tw
1 page  
【深圳市登辰易科技有限公司-------电子元件选型推荐】
WWW.DCY-CHINA.COM
APX9370
Typical Operating Characteristics
CT Pin Charge/Discharge Current vs.
VCC Supply Voltage
2.5
ICT1
2
1.5
1
ICT2
0.5
0
0 2 4 6 8 10 12 14 16
VCC Supply Voltage(V)
FG Pin Low Voltage vs. Sink Current
700
VCC = 3V
600
500
400 VCC = 12V
300
200
100
0
0 2 4 6 8 10
FG Pin Sink Current(mA)
OSC Pin Charge/Discharge Current vs.
VCC Supply Voltage
25
IOSC2
20
IOSC1
15
10
5
0
0 2 4 6 8 10 12 14 16
VCC Supply Voltage(V)
Maximum Power Dissipation vs.
Ambient Temperature
1200
1000
800
600
400
200
0
0 25 50 75 100 125 150
Ambient Temperature(oC)
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Sep., 2013
5
www.anpec.com.tw
5 Page 
【深圳市登辰易科技有限公司-------电子元件选型推荐】
WWW.DCY-CHINA.COM
APX9370
Application Information
Input Protection Diode & Capacitor
The IC should be added a protection diode (D1) to pre-
vent the damage from the power reverse connection.
However, the protection diode will cause a voltage drop
on the supply voltage. The current rating of the diode must
be greater than the maximum output current. For the noise
reduction purpose, a capacitor (C1) must connect be-
tween VCC and GND. It is the suggestion that C1 should
be placed as close as possible to the device VCC pin.
CT Capacitor
The capacitor that is connected from CT pin to GND de-
termines the shutdown time and restart time.
Locked Detection Time = CCT × (VCTH - 0.2V)
ICH1
Restart Time = CCT × (VCTH - VCTL)
ICH1
Shutdown Time = CCT × (VCTH - VCTL)
ICH2
Where:
CCT = CT pin capacitor
For example:
VCC = 12V, CCT = 1uF
Locked Detection Time = 1.4s
Restart Time = 1s
Shutdown Time = 10s
The value of charge capacitor is recommended from
0.47µF to 1µF.
FG Resistor
The value of the FG resistor could be decided by the fol-
lowing equation:
RFG = VDC − VFG
IFG
For example:
VDC = 5V, IFG = 3mA, VFG = 0.2V, RFG = 1.6kΩ
The value of resistor in the range of 1kΩ to 10kΩ is
recommended.
COMOUT and FN pins
The APX9370 detects the BEMF generated when the
motor is running to obtain the position information.
Inserting a capacitor (reference value 10nF) between pins
COMOUT and FN is useful to reduce the noise which may
result in the wrong position information. However, it
should take care a extremely high capacitance will cause
delays and decrease the efficiency, This condition is ob-
vious when the motor is running at high speed.In addition,
the path between the capacitor and those two pins should
be as short as possible to avoid the noise from other
sources.
S-S Capacitor
The capacitor that is connected from S-S pin to 5VREG
determines the soft start time.
Case 1 : VOSCL<VSET<VMIN
Soft Start Time = CS - S × (VOSCH - VSET)
IS - S
where:
C = S-S pin capacitor
S-S
For example:
VCC=12V, VOSCH=4V, VOSCL=1V, VSET=1.4V, IS-S=0.5µA,
CS-S=1µF
Soft Start Time = 5.2s
Case 2 : V <V <V
SCT OSCL MIN
Soft Start Time = CS - S × (VOSCH - VOSCL)
IS - S
For example:
V =12V,
CC
V =4V,
OSCH
V =1V,
OSCL
V =0.5V,
SET
I
=0
S-S
.
5
µA
,
CS-S=1µF
Soft Start Time = 6s
The value of S-S pin capacitor is recommended 0.47µF
to 10µF. The choices of CT pin and S-S pin capacitors
should be considered that fan must start up during re-
start time at lock mode. When the C is determined and
CT
the fan can?¦t start up at power-on or lock-restart mode,
decrease the CS-S capacitance can let the fan start up
successfully but it will reduce the soft start time.
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Sep., 2013
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet APX9370.PDF ] | |
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