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. 2013/01/17 Rev. 1.2 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 Min. Max. VCC 15 TEAO 0 VCC+0.5 TFB 0 VCC+0.5 FANPWMOUT GND – 0.5 VCC+0.5 5 IREF CAVERAGE / FANCMD 0 VCC+0.5 Peak FANPWMOUT Current, Source or Sink 10 FANPWMOUT, Energy Per Cycle 1.5 Junction Temperature Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) Thermal Resistance (θJA) Plastic DIP Plastic SOP Plastic TSSOP -65 -40 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 Typing Reel 2013/01/17 Rev. 1.2 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 2013/01/17 Rev. 1.2 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 2013/01/17 Rev. 1.2 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. 2013/01/17 Rev. 1.2 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 2013/01/17 Rev. 1.2 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 2013/01/17 Rev. 1.2 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) 2013/01/17 Rev. 1.2 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 2013/01/17 Rev. 1.2 Champion Microelectronic Corporation 9