Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM • Networking Gear • Data Communications • Telecommunications • Industrial / Medical Basic operation and functions H100 single output DC/DC converters provide from 50 watts up to 100 watts of output power in an industry standard half-brick package and footprint. The H100 features high efficiency, fixed switching frequency at 500 KHz, continuous short circuit protection, over voltage protection, over current protection, over temperature protect, five-sided metal case, True-Trim Option, 1500V Isolation, and Positive or Negative Logic. Therefore, H100 converters are particularly suited to telecom, networking, and industrial application. Input (Vi+ , Vi-) Input power Vin+ must be connected to Positive input voltage(Vi+) ; Input power Logic State Negative Logic Module on Logic LowSwitch Closed Logic High- Module off Switch Closed Positive Logic Module off Module on Remote Sense(+sense , -sense) Permits the user to maintain the accurate output voltage at the remote load trminals regardless of the line drop. The +sense and -sense should be connected at the load or at the point where the regulation is needed. Vin- must be connected to Negative voltage(Vi-). Output (Vo+ , Vo- ) Output power Vout+ must be connected to Positive output voltage (Vo+) ; Output power Vout- must be Negative output voltage (Vo-). On /Off The output allows the user to switch the module on and off electronically by remote on/off feature. There are two remote control options available, Positive logic and Negative logic. The remote must use the TTL to control on/off pin. The remote sense feature of the unit compensates for voltage drop occurring between the output pins of the unit and load. The +sense and -sense should be connected at the load or at the point where regulation is required. If remote sense is not required, the +sense pin muse be connected to the Vout+ pin and -sense pin must be connected to the Vout- pin to ensure the unit will regulate at the specified output voltage. If these connections are not made, the unit's output voltage will be higher than the specified value. 1 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM • Networking Gear • Data Communications • Telecommunications • Industrial / Medical The unit output over voltage protection senses the voltage across Vout+ and Vout-, When using the remote sense feature, the output voltage at the unit can be increased by as much as 10% above the normal rating, in order to maintain the required voltage across the load. Therefore, the designer must consider this condition. Also when using the remote senses function, the output power must be taken care of, as not to exceed the maximum power capability of the unit. Output voltage trim(trim) Permits the user to adjust the output voltage up or down to achieve the custom voltage or to make the output voltage margining. The adjustment range is from +10% to -10%. Output voltage can be adjusted up or down, by connecting the Rtrim-up or Rtrim-down resistor as show. Rtrim-up makes the output voltage go up to 10%; and the Rtrim-down makes the output voltage go down to 10%. Leave Trim pin open for normal output voltage. Trimming up the output voltage for a typical circuit For Trim up resistance value, we list the reference "Trim UP Resistance" for increasing the output voltage for every 1 percent. Rtrim-up(K) Vout(V) Trim-up Vout(%) 68.54 24.24 1% 49.36 24.48 2% 37.95 24.72 3% 30.39 24.96 4% 25.00 25.20 5% 20.97 25.44 6% 17.84 25.68 7% 15.35 25.92 8% 13.31 26.16 9% 11.61 26.40 10% shows "Trim UP Resistance" value chart. 70 60 Rtrim-up(KΩ) and not across the sense lines, so the resistance between the output pins of the unit and the load should be minimized to prevent unwanted triggering of the OVP. 50 40 30 20 10 0 0% 1% 2% 3% 4% 5% 6% 7% Trim-up Vout(%) 8% 9% 10% Trimming down the output voltage for a typical circuit For Trim up resistance value, we list the 2 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM For Trim down resistance value, we list the reference "Trim Down Resistance" for decreasing the output voltage for every 1 percent. Rtrim-down(K) Vout(V) Trim-down Vout(%) 1671.67 23.76 1% 775.83 23.52 2% 477.22 23.28 3% 327.92 23.04 4% 238.33 22.80 5% 178.61 22.56 6% 135.95 22.32 7% 103.96 22.08 8% 79.07 21.84 9% 59.17 21.60 10% • Networking Gear • Data Communications • Telecommunications • Industrial / Medical Output over current protection (OCP) and output short protection The unit will auto recovery current limit when the over current or short circuit condition exists. Once the OCP happens, the unit has auto recovery current limit. The attempted restart will continue indefinitely until the over current or short circuit condition is removed. When OCP happens, the output voltage drops below 0.2V. Input voltage has almost no effect on the current limit point. shows "Trim Down Resistance" value chart. 1800 1600 Rtrim-down(KΩ) 1400 1200 1000 800 600 400 200 0 0% 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% CH1:24Vout/OCP Trim-down Vout(%) Protection Features Input under voltage lockout(UVLO) Input under voltage lockout(UVLO) is standard with the H100 unit. The unit will shut down when the input voltage drops below a threshold, and the unit will turn on when the input voltage goes to the upper threshold. The hysteresis voltage of the unit voltage protection is 1V, typically from the 16V to CH1:24Vout/short 17V range. 3 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM Output over voltage protection(OVP) The output over voltage protection range rating. above 115-140% Vout. If the output voltage exceeds 140%Vout, the output will keep 140%Vout. Efficiency Efficiency vs load current is given below. The ambient temperature is 25℃, airflow is • Networking Gear • Data Communications • Telecommunications • Industrial / Medical 20LFM(0.1m/s), and the input voltage is 18V, protect the unit from overheating. The OTP circuit will turn the unit off when OTP happens. Once the unit has shut down, it will 24V and 36V conditions. 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% restart at the cycle when the case plate temperature goes down. Characterization General information The H100 unit has many operational characterized aspects, including efficiency, start up and down timing parameter, H100-24S24 EFF. Eff. CHB100-24S24 EFF.(%) Over temperature protection(OTP) The unit will shut down when the case plate temperature exceeds the protection threshold. The unit will shut down under the case plate temperature over a 100℃ condition to 18V 24V 36V 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Iout(A) Start up During the turn on transient using the On/Off pin and power supply for full load current, the output voltage waveforms are given in the below. overshoot, output ripple & noise, dynamic response to load , input ripple current and thermal derating. The following pages contain specific plots or waveforms associated with the unit. Additional comments for specific data are provided below. Test conditions: For the output, a 10uF tantalum capacitor with Esr < 1.5Ω and a 1uF ceramic capacitor has been used for the test. Also it is better when these two capacitors CH1:24Vin H2:24Vout/FL Start up delay time: 5.2ms are close to the unit. Note: It is important to make sure that the components on the unit do not exceed their 4 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM • Networking Gear • Data Communications • Telecommunications • Industrial / Medical Output Ripple and Noise The output voltage waveform measured at minimum load and full load current, with a 0.1uF ceramic capacitor across to close unit. CH1: Remote CH2: 24Vout/FL Start up delay time: 3.58ms Overshoot and rise time The input start-up from power supply. The output voltage waveform measured at CH1: 24Vout/FL minimum load and full load current. Ripple: 60.4mVp-p Hold time The hold time is measure from the power supply end or on/off pin is off to when Vout drop down to 90% output. CH1: 24Vout/FL Overshoot: zero % Rise time: 1.524ms CH1:24Vin Ch2: 24Vout/FL Hold time:60us CH1:24Vout/NL Overshoot: zero % Rise time:2.177ms 5 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM CH1:Remote Ch2: 24Vout/FL CH1:24Vout Ch2:Iout, 0.1A/us Hold time:2.56ms Load change 25%-75%-25% • Networking Gear • Data Communications • Telecommunications • Industrial / Medical Dynamic response Output voltage dynamic response at 24Vin and different load condition. ceramic capacitor. Output with a 0.1uF Derating Curve When operating the H100 series proper derating or cooling is needed. Following is the derating curve of H100 without heatsink. Where: The power dissipation(Pd) Pd = Pi – Po = Po(1-eff.) / eff. The thermal resistance are list below: The temperature rise(△T): CH1:24Vout Ch2:Iout, 0.1A/us Load change 50%-100%-50% △Pd*Rca 50 100LFM(0.5m/s) Power Disspated(W) 45 200LFM(1m/s) 40 35 300LFM(1.5m/s) 30 400LFM(2m/s) 25 20 500LFM(2.5m/s) 15 600LFM(3m/s) 10 700LFM(3.5m/s) 5 800LFM(4m/s) 0 0 20 40 60 80 100 20LFM(0.1m/s) Ambient Temperature(℃ ) Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: 6 • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A Applications Switches and Data Storage H100-24S24 DC/DC Converter •• Servers, Wireless Communications 1400 PROVIDENCE HIGHWAY • BUILDING 2 • Distributed Power Architecture Application Notes NORWOOD, MASSACHUSETTS 02062-5015 • Semiconductor Test Equipment WWW.INTRONICS.COM • Networking Gear • Data Communications • Telecommunications • Industrial / Medical Input ripple current CH1: Iin / Output: FL Input ripple current: 244mAp-p Chart of Thermal Resistance vs Airflow Air Flow Rate Typical Rca 20LFM (0.1m/s) 7.12℃/W 100LFM (0.5m/s) 6.21℃/W 200LFM (1.0m/s) 5.17℃/W 300LFM (1.5m/s) 4.29℃/W 400LFM (2.0m/s) 3.64℃/W 500LFM (2.5m/s) 2.96℃/W 600LFM (3.0m/s) 2.53℃/W 700LFM (3.5m/s) 2.37℃/W 800LFM (4.0m/s) 2.19℃/W *. Natural convection = 20LFM (0.1m/s) 7 Intronics, Inc. • 1400 Providence Highway, Building 2, Norwood, MA 02062-5015 Phone: • 1-800-367-0004, 1-781-551-5500 Fax: 1-781-551-5555 Rev. A