hpfang

HPFANG+/http://www.championmicro.com.tw
HP Power Supply Fan Controller DATA SHEET
GENERAL DESCRIPTION
FEATURES
HPFANG+/- is designed for HP related application. The
target application is for the Fan Control Section of HP PC
Power Supply. It might infringe HP patent if the application
is not relate to HP related business.
‹
Combine Mother Board Temperature Signals with Power
Supply Temperature Signals
‹
Low BOM and It may reduce one Fan
HPFANG+/- is designed to achieve high performance and
high efficiency with low cost BOM. With HPFANG+/-, the
application may reduce one FAN.
It combines PC
motherboard temperature information and the temperature
information of PC power supply. The temperature
information of PC power supply is an analog signal called
TFB, which can be generated by a simple Thermistor. The
temperature information of PC motherboard usually is
presented by the duty cycle of the signal called FANCMD.
‹
Precision OP (TEAO) uses TFB to sense the thermistor
information at power supply
‹
Precision 25KHz Ramp generator: Peak ~ 3.5V (Duty
~100%) and Valley ~1.5V (Duty ~1.5%)
‹
Precision 25KHz Ramp generator compares TEAO,
Caverage, and Fault to determine the duty cycle of
FANPWMOUT
‹
It does not require negative voltage
TEAO and TFB are output and inverting input of the OP.
The non-inverting input of TEAO OP is connected to internal
2.5V reference. A simple inverting gain configuration with
a thermistor in series of a current limit resistor Rs can
program the TEAO to search for the duty cycle of
FANPWMOUT which corresponds with the fan speed at the
temperature. When TEAO is greater than 3.5V, the
FANPWMOUT duty cycle is 100%. When TEAO is ~ 2.5V,
the FANPWMOUT duty cycle is ~50%. When TEAO is
below 1.5V, the FANPWMOUT duty cycle is ~ 1.5%.
‹
Accept Pulse PWMing signal FANCMD (prefer it is
below 100Khz) from Mother Board
‹
Precision Duty to Duty Converter or called a Pulse to
Pulse Converter or called PWMing to PWMing Converter
‹
The amplitude of Input pulse (FANCMD), peak to peak
can be from 0V - 5V to 0V - 2V
‹
Minimum VCC > 8V Power Supply
‹
Preferred VCC~ 12V
Usually, 50% duty cycle of FANPWMOUT corresponds to
50% Power Supply load at room temperature, and 5% duty
cycle of FANPWMOUT corresponds to 20% Power Supply
load at room temperature. To have FANPWMOUT ~ 50%,
TEAO is ~2.5V.
‹
Precision (1% variation) 5V Reference Voltage
‹
Precision Internally Generated 25KHz +/-10% Switching
Frequency
‹
FANPWMOUT 1.5% to 100% Output Duty Cycle
FANCMD is represented as motherboard temperature
information. FANCMD usually is a 25KHz PWMing signal.
The amplitude of FANCMD needs to be greater than 1.5V
and lower than 5V to work with HPFANG+/-.
‹
Thermal Shut Down can be done by sensing TFB or
TEAO
Low Operating Current, Ivcc ~ 0.5mA
HPFANG+/- is inverting the complimentary duty cycle of
FANCMD to FANPWMOUT. FANCMD duty cycle is ~
FANPWMOUT duty cycle.
HPFANG+/- selects the highest voltage among TEAO,
CAVERAGE to compare with oscillator ramp, which is 1.5V
to 3.5V.
‹
‹
HPFANG+ : Input Signal FANCMD 25% Duty (+)
Output Signal FANCMD 25% Duty (+)
‹
HPFANG- : Input Signal FANCMD 25% Duty (-)
Output Signal FANCMD 75% Duty (-)
‹
8 pin package : DIP & SOP Package
HPFANG+/- design tool is available. Please contact
Champion Sales.
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
1
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
PIN CONFIGURATION
DIP-8 / SOP-8
1
TEAO
VREF
8
2
TFB
VCC
7
3
FANCMD
4
CAVERAGE
6
FANPWMOUT
5
GND
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are those values beyond which the device could be permanently damaged.
Parameter
VCC
TEAO
TFB
FANPWMOUT
IREF
CAVERAGE / FANCMD
Peak FANPWMOUT Current, Source or Sink
FANPWMOUT, Energy Per Cycle
Min.
0
0
GND – 0.5
0
Junction Temperature
Storage Temperature Range
Operating Temperature Range
Lead Temperature (Soldering, 10 sec)
Thermal Resistance (θJA)
Plastic DIP
Plastic SOP
Plastic TSSOP
-65
-40
Max.
18
7
VCC+0.5
7
5
7
10
1.5
Units
V
V
V
V
mA
V
mA
μJ
150
150
125
260
℃
℃
℃
℃
80
105
105
℃/W
℃/W
℃/W
ORDERING INFORMATION
Part Number
HPFANG-XIS*
Temperature Range
-40℃ to 125℃
Package
SOP-8 Pin
HPFANG-XISTR*
-40℃ to 125℃
SOP-8 Pin
HPFANG+XIS*
-40℃ to 125℃
SOP-8 Pin
HPFANG+XISTR*
-40℃ to 125℃
SOP-8 Pin
HPFANG-XIP*
-40℃ to 125℃
DIP-8 Pin
HPFANG+XIP*
-40℃ to 125℃
DIP-8 Pin
*Note: X : Suffix for Halogen Free and PB Free Product
TR : Package is Taping Reel
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
2
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
SIMPLIFIED BLOCK DIAGRAM (HPFANG+/-)
VCC
5.0V
U3
+
OP
OSC
.
-
8 VREF
TEAO 1
7 VCC
CLK
TFB 2
U2
-
OP
2.5V
S
Q
R
Q
6 FANPWMOUT
.
.
+
+
+
PWM CMP
5 GND
+
HPFANG+ =
FANCMD 3
-
.
1.5V
U1
U1
-
.
1.5V
+
-
HPFANG- =
CAVERAGE 4
U1
.
1.5V
+
PIN DESCRIPTION
Pin No.
Symbol
1
TEAO
2
TFB
Operating Voltage
Description
Min.
Fan Controller’s OP Output which is one of
Typ.
0
FANPWMOUT duty control signal
Fan controller’s OP inverting Input. It is power supply
Max.
Unit
4.3
V
2.5
temperature signal
V
Motherboard Temperature signal. It can be a variable
3
FANCMD
speed and variable value PWM input signal.
It is
converted to an average signal and then controls
1.5
5
V
1.375
3.625
V
FANPWMOUT duty
4
CAVERAGE
5
GND
6
Averaged FANCMD signal. It is one of FANPWMOUT
duty control signal
0
Ground
FANPWMOUT Controller Output
7
VCC
8
VREF
2015/04/23 Rev. 1.4
Positive Supply
Maximum 3mA buffered output for the internal 5V
reference when VCC=12V
Champion Microelectronic Corporation
V
0
5.7
V
8
15
V
5
3
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, these specifications apply Vcc=+12V, CVREF = 0.1uF, TA=Operating Temperature Range
(Note1)
Symbol
Parameter
HPFANG+/-
Test Conditions
Unit
Min.
Typ.
Max.
8
12
15
Supply
VCC
Input Voltage Range
VCC
Operating Current
12V, CL = 0
V
0.45
mA
Voltage Error Amplifier Output (TEAO)
Input Voltage Range
TFB
0
Feedback Reference Voltage TEAO = TFB, TA = 25℃,
2.475
2.5
-0.05
Input Bias Current
Note 2, Note 3
-1.0
Output High Voltage
TA = 25℃, ITEAOSOURCING=1mA
4.0
Output Low Voltage
TA = 25℃, ITEAOSINKING=1mA
Output Sourcing Current
TEAO = TFB,TA = 25℃, ITEAOSOURCING=1mA
Output Sinking Current
TEAO = TFB,TA = 25℃, ITEAOSINKING=1mA
Open Loop Gain
DC gain
3
V
2.525
V
μA
V
0.65
1
V
2.475
2.5
2.525
V
2.475
2.5
2.525
V
Power Supply Rejection Ratio 10V < VCC < 12V
110
dB
135
dB
FANPWMOUT Duty vs TEAO voltage
TEAO~1.5V
10V < VCC < 12V, TA = 25℃, TEAO=1.5V
TEAO~2.5V
10V < VCC < 12V, TA = 25℃, TEAO=2.5V
50
%
TEAO~3.5V
10V < VCC < 12V, TA = 25℃, TEAO=3.5V
100
%
Output Voltage
TA = 25℃, I(VREF) = 0mA
Line Regulation
1.5
5
%
Reference
VREF
4.95
5
5.05
V
10V < VCC < 12V @ T=25℃
10
25
mV
Load Regulation
VCC=12V, 0mA < I(VREF)< 3mA; TA=25℃
15
Load Regulation
VCC=12V, 0mA< I(VREF)< 3mA;
TA=-40℃~85℃
30
Temperature Stability
50
mV
0.4
Total Variation
Line, Load, Temp
Long Term Stability
TJ = 125℃, 1000HRs
2015/04/23 Rev. 1.4
mV
Champion Microelectronic Corporation
%
4.95
5.05
V
5
25
mV
4
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, these specifications apply Vcc=+12V, CVREF = 0.1uF, TA=Operating Temperature Range
(Note1)
HPFANG+/Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
45
50
55
%
45
50
55
%
45
50
55
%
70
75
80
%
20
25
30
%
20
25
30
%
70
75
80
%
22.5
25
27.5
kHz
FANPWMOUT Matching Test
HPFAN(+/-)
FANPWMOUT Duty
HPFAN(+/-)
FANPWMOUT Duty
HPFAN(+/-)
FANPWMOUT Duty
HPFAN(-)
FANPWMOUT Duty
HPFAN(+)
FANPWMOUT Duty
HPFAN(-)
FANPWMOUT Duty
HPFAN(+)
FANPWMOUT Duty
INPUT SIGNAL FANCMD 15KHz
50% Duty (+/-)
INPUT SIGNAL FANCMD 25KHz
50% Duty (+/-)
INPUT SIGNAL FANCMD 35KHz
50% Duty (+/-)
INPUT SIGNAL FANCMD 25KHz
25% Duty (-)
INPUT SIGNAL FANCMD 25KHz
25% Duty (+)
INPUT SIGNAL FANCMD 25KHz
75% Duty (-)
INPUT SIGNAL FANCMD 25KHz
75% Duty (+)
Internal Oscillator (Measuring FANPWMOUT)
Frequency
TA = 25℃
Ramp Peak to Peak Voltage 10V < VCC < 12V
2
V
Ramp Peak High Voltage
10V < VCC < 12V
3.5
V
Ramp Peak Low Voltage
10V < VCC < 12V
1.5
V
Voltage Stability
10V < VCC < 12V
2
%
2
%
Temperature Stability
Total Variation
VCC=10V~12V, 0mA <I(VREF)< 3mA;
TA = -40℃~85℃
FANPWMOUT Dead Time
22.5
27.5
kHz
1.2
1.5
1.8
us
1.48
1.5
1.55
V
FANCMD / FANPWMOUT
FANCMD Threshold Voltage TFB=2.6V,
FANCMD>1.5V Minimum Duty Cycle
TFB>2.5V and FANCMD>1.5V (For HPFAN-),
1.5
%
FANCMD<1.5V Maximum Duty Cycle
TFB<2.5V and FANCMD<1.5V (For HPFAN-),,
100
%
Output Low Rdson
IOUT = -5mA @ TA =25℃ Vcc=12V
80
ohm
Rise/Fall Time (Note 3)
CL = 100pF @ TA =25℃
50
ns
Output High Voltage
TA = 25℃, IFANPWMOUTSOURCING=5mA
4.5
5
V
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: Includes all bias currents to other circuits connected to the VFB pin.
Note 3: Guaranteed by design, not 100% production test.
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
5
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
Description
Functional Description
HPFANG+/- is a Fan control with an internal VREF=5V and maximum IREF=2.5mA current sourcing ability
reference voltage/current . HPFANG+/- operates at 25KHz and the duty cycle ranges from 1.5% to 100%. It
transfers input PWMing command signal, thermal signal to fan control signal.
HPFANG+/- combines thermal
signal, which is from power supply load, represented by Rthermister, and motherboard temperature signal,
represented by FANCMD, to generate fan control signal. It features high efficiency, larger variable range speed,
and low cost.
Error Amplifier Output TEAO
Error Amplifier receives power supply load information, which is represented by Rthermistor and then generates signal TEAO.
It is an internal compensated OP. It feedback resistor RF (see figure 1.) needs to be calculated respect to the chosen SPEC of
thermal resistor RTHERMISTER
Error Amplifier output TEAO is one of signals, which decides FANPWMOUT duty cycle, and finally decides the fan speed. As
power supply load increase, RTHERMISTER reduce, TEAO increae, FANPWMOUT duty increase, then the FAN speed increases.
Figure 1. FANPWMOUT Control Circuit
FAN1
TACH
R10
0.5K
Rc
R1
Rf R2
4K
15K
1
2
R4
Rt
100K
CN1
C1
0.01uF
U1 HPFANG
R5
10
3
2
VREF
TEAO
VCC
TFB
FANCMD
FANPWMOUT
VCC
8
R7
R3
CN2
7
6
1
R6
10
2
C3
C2
0.01uF 47uF/25V
CON2
0
UFan
10K
1
Rs
4
3
2
1
4
CAVERAGE
GND
CON2
5
C4
0.1uF
R8
HouseKeeping
NPN
R9
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
6
HPFANG+/HP Power Supply Fan Controller DATA SHEET
http://www.championmicro.com.tw
Calculation of Thermal Resistor RTHERMOSITER and Error Amplifier Feedback Resistor RF (Figure 1.)
Thermal Resistor and Error Amplifier Feedback Resistor Relationship
(VREF − TFB ) TEAO − TFB
TFB
+
=
Rc
Rf
Rthemistor + Rseries
Full Speed RPM 50% Load
(5V − 2.5V ) 3.5V − 2.5V
2.5V
+
=
When TEAO ~ 3.5V
Rc
Rf
Rthemistor + Rseries
Duty100%
Half Speed RPM
(5V − 2.5V ) 2.5V − 2.5V
2.5V
+
=
When TEAO ~ 2.5V
Rc
Rf
Rthemistor + Rseries
Duty50%
Minimum Speed RPM
(5V − 2.5V ) 1.5V − 2.5V
2.5V
+
=
When TEAO ~ 1.5V
Rc
Rf
Rthemistor + Rseries
Duty < 5%
APPLICATION CIRCUIT (HPFANG+/-)
FAN1
TACH
R10
0.5K
Rc
R1
Rf R2
4K
15K
1
2
R4
Rt
100K
CN1
C1
0.01uF
U1 HPFANG
R5
10
3
2
VREF
TEAO
VCC
TFB
FANCMD
FANPWMOUT
VCC
8
R7
CN2
7
6
1
R6
10
2
C3
C2
0.01uF 47uF/25V
CON2
0
UFan
R3
10K
1
Rs
4
3
2
1
4
CAVERAGE
GND
CON2
5
C4
0.1uF
R8
HouseKeeping
NPN
R9
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
7
HPFANG+/http://www.championmicro.com.tw
HP Power Supply Fan Controller DATA SHEET
PACKAGE DIMENSION
8-PIN DIP (D8)
8-PIN SOP (S8)
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
8
HPFANG+/http://www.championmicro.com.tw
HP Power Supply Fan Controller DATA SHEET
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain
the latest version of relevant information to verify, before placing orders, that the information being relied
on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury,
or severe property or environmental damage. CMC integrated circuit products are not designed,
intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems
or other critical applications. Use of CMC products in such applications is understood to be fully at the
risk of the customer. In order to minimize risks associated with the customer’s applications, the
customer should provide adequate design and operating safeguards.
HsinChu Headquarter
Sales & Marketing
5F, No. 11, Park Avenue II,
Science-Based Industrial Park,
HsinChu City, Taiwan
21F., No. 96, Sec. 1, Sintai 5th Rd., Sijhih City,
Taipei County 22102,
Taiwan R.O.C
T E L : +886-3-567 9979
F A X : +886-3-567 9909
http://www.champion-micro.com
T E L : +886-2-2696 3558
F A X : +886-2-2696 3559
2015/04/23 Rev. 1.4
Champion Microelectronic Corporation
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