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| PT4471--24V 100 W att 30 Amp Programmable Isolated DC-DC Converter SLTS093 (Revised 6/30/2000) Features * Input Range: 18V to 36V * Programmable Output: 1.3V to 3.5V *T emp Range: -40 to +100C * 1500 VDC Isolation * 88% Efficiency * Remote On/Off * Differential Remote Sense * N+1 Current Sharing * Over-Current Protection * Over-T emperature Protection * Over-Voltage Protection * Solderable Copper Case Description The PT4471 ExcailburTM module combines state-of-the-art power conversion technology with un-paralleled flexibility. Operating off a standard 24V telecom input, the PT4471 provides a full 100W output at load currents up to 30A, and over the programmable output voltage range of 1.3V to 3.5V. The PT4471 features high efficiencies, ultra-fast transient response, and the capability for true N+1 current sharing. This product also includes output short circuit and over-temperature protection. Patent pending on package assembly Standard Application + V IN 1 2 +V in V 7 +V sns +V out 8-13 + VO U T L O A D * C1 = Optional 33F, 50V electrolytic capacitor * Programming pins, VID0-VID4, are shown configured for Vo =3.3V * For normal operation, pin 3 (Inhibit) must be connected to -Vin. * For operation in N+1 configuration, consult the related application note. * Pins 6 & 26 are used for N+1 configurations only. PT4471 in + C1 -V out 14-19 -V sns 20 Inhibit 3 VID0 - VID4 21 22 23 24 25 V OUT V IN PROGRAMMING PINS Specifications Characteristics (Ta=25C unless noted) Output Current Current Limit Current Sharing Input Voltage Range Output Voltage T olerance Line Regulation Load Regulation Vo Ripple/Noise Transient Response Vin Vo Regline Regload Vn ttr Symbols Io Icl Conditions (Vin= 24V, Vo=3.3V unless noted) Over Vin range Vin = 18V with PT4495 current booster Io = 0 to max Io Over Vin Range TA= -40 to +100C Case Over Vin range @ max Io 0 to 100% of Io max Io =I omax 50% to 75% Iomax @ 0.1A/s Vo over/undershoot (no ext caps) 50% to 100% I omax @1.0A/s Vo over/undershoot (no ext. caps) Vo Rise Time Efficiency Switching Frequency Remote On/Off Over-Voltage Protection Isolation Maximum Operating T emperature Range Over-T emperature Shutdown Point Reliability Mechanical Shock Mechanical Vibration Weight Votr o Off On OVP -- Tc OTP MTBF -- -- -- At turn-on Io=15A -- Open or 2.5 to 5.1 VDC above -V in Short or 0 to 0.8 VDC above -Vin Shutdown and latch off -- Measured at center of case Case temperature - Auto reset Per Bellcore TR-332 50% stress, t =40C, ground benign Per Mil-STD-883D, Method 2002.3, 1mS, Half-sine, mounted to a fixture Per Mil-STD-883D, Method 2007.2, 20-2000Hz, Soldered in a PC board -- -- 1500 -40 -- 1.4 -- -- -- 125 -- -- +105 -- TBD TBD 90 -- -- +100 -- -- -- -- -- %Vo VDC C C 10 Hrs G's G's grams 6 PT4471 Min 0 -- -- 18 -- -- -- Vo >2.0V Vo 2.0V -- -- -- -- -- -- -- -- -- Typ -- 35 -- 24 1.0 0.1 0.5 60 45 N/A 1.0 75 5 -- 88.5 300 Max 30 -- 10 36 2.0 1.0 1.0 75 55 -- -- -- -- 10 -- -- Units A A % V %Vo %Vo %Vo mVpp Sec %Vo Sec %Vo mSec % kHz For technical support and more information, see inside back cover or visit www.ti.com/powertrends PT4471-- 24V 100 W att 30 Amp Programmable Isolated DC-DC Converter Pin-Out Information Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Programming Information Pin 14 15 16 17 18 19 20 21 22 23 24 25 26 Ordering Information PT 4471t = 1.3 to 3.5 Volts t (For dimensions and PC board layout, see Package Styles 1200, 1210 and 1215.) 1.30V 1.35V 1.40V 1.45V 1.50V 1.55V 1.60V 1.65V 1.70V 1.75V 1.80V 1.85V 1.90V 1.95V 2.00V 2.05V Function +V in -V in Inhibit Do not connect Do not connect Sync +V sense +V out +V out +V out +V out +V out +V out Function -Vout -Vout -Vout -Vout -Vout -Vout -V sense VID0 VID1 VID2 VID3 VID4 Share VID3 VID2 VID1 VID0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 VID4=1 VID4=0 Vout Vout 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V PT Series Suffix (PT1234X) Case/Pin Configuration Vertical Through-Hole N Horizontal Through-Hole A Horizontal Surface Mount C Logic 0 = Pin 20 potential (remote sense gnd) Logic 1 = Open circuit (no pull-up resistors) VID4 may not be changed while the unit is operating. TYPICAL PT4471, Vo =3.3V Efficiency vs Output Current 100 CHARACTERISTICS Safe Operating Area, Vin =24V, Vo =3.3V PT4472, Stand Alone and w/o Heatsink 90 80 (See Note A) (See Note B) Ambient Temperature ( C) 90 Airflow 70 60 50 40 30 Efficiency - % VIN 80 70 18.0V 24.0V 36.0V 500LFM 400LFM 300LFM 200LFM 100LFM Free Conv 60 50 0 5 10 15 20 25 30 20 0 5 10 15 20 25 30 Iout (A) Iout (A) Ripple vs Output Current 100 80 Ripple - mV VIN 60 40 36.0V 24.0V 18.0V 20 0 0 5 10 15 20 25 30 Iout (A) Power Dissipation vs Output Current 20 16 VIN Pd - Watts 12 8 18.0V 24.0V 36.0V 4 0 0 5 10 15 20 25 30 Iout (A) Note A: All data listed in the above graphs has been developed from actual products tested at 25C. This data is considered typical data for the DC-DC Converter. Note B: SOA curves represent operating conditions at which the temperature of the metal case is at or below the maximum specified 100C For technical support and more information, see inside back cover or visit www.ti.com/powertrends IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 2000, Texas Instruments Incorporated |
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