PT4100—24V SLTS020A 15 Watt Isolated DC-DC Converter (Revised 1/15/2001) • Input Voltage Range: 18V to 40V • 1500 VDC Isolation • Low Profile • Current Limit • Short-Circuit Protection • Over-Temperature Shutdown • UL1950 recognized • CSA 22.2 950 certified • Meets EN60950 The PT4100—24V series of dc/dc converters provide 18 Watts/in3 of isolated power in a single low-profile module. Designed to operate from a standard 24V telecom bus, these modules employ switching frequencies of up to 850kHz, planar magnetics, and surface-mount construction. They are designed for Telecom, Industrial, Computer, Medical, and other distributed power applications that require input-to-output isolation. Specifications Standard Application PT4100—24V SERIES Characteristics (Ta=25°C unless noted) Symbols Conditions Output Current Io Over Vin range, Min Typ Max Units Vo = 5V Vo = 12V Vo = 15V 0 0 0 — — — 3.0 1.25 1.0 A Vo = 5V Vo = 12V Vo = 15V — — — 4.0 1.75 1.4 — — — A On/Off 1 +Vin 3 -Vin 2 PT4100 5 +Vout 4 -Vout Icl Vin = 18V, On/Off Standby Current Iin standby Vin = 24V, Pin 1 = -V in — 7 10 mA Short Circuit Current Isc Vin = 24V, — — — 6.25 2.5 2.0 — — — A Inrush Current Iir tir Vin = 24V @ max Io On start-up — — 1.0 1.0 2.0 5.0 A mSec Pin Function Input Voltage Range Vin Io = 0.1 to max I o 18.0 24.0 40.0 V 1 Output Voltage Tolerance ∆Vo Over Vin Range TA= -40°C to +85°C Remote ON/OFF — ±1.0 ±2.0 %Vo 2 -V in Line Regulation Regline Over Vin range @ max Io — ±0.2 ±1.0 %Vo 3 +Vin Load Regulation Regload 10% to 100% of Io max — ±0.4 ±1.0 %Vo 4 -V out Vo Ripple/Noise Vn Vin=24V, Io=3.0A, Vo=5V Vin=24V, Io=1.25A, Vo=12V Vin=24V, Io=1.25A, Vo=15V — — — 75 75 100 100 150 200 mVpp 5 +Vout 6 Do not connect Current Limit Vo = 5V Vo = 12V Vo = 15V Pin-Out Information Transient Response ttr 50% load change Vo over/undershoot — — 125 3.0 200 5.0 µSec %Vo Efficiency η Vin=24V, Io=3.0A, V o=5V Vin=24V, Io=1.25A, Vo=12V Vin=24V, Io=1A, Vo=15V — — — 82 82 83 — — — % Switching Frequency ƒo Over Vin and Io, Vo=5V Vo=12V/15V 800 600 850 650 900 700 kHz Recommended Operating Temperature Range Ta Vin = 24V @ max Io Free air convection, (40-60LFM) -40 — +85 (1) °C Thermal Resistance θja Free air convection, (40-60LFM) — 12 — °C/W Case Temperature Tc @ Thermal shutdown — — 100 °C Storage Temperature Ts -40 — 110 °C Mechanical Shock — — 50 — G’s — 10 — G’s Per Mil-STD-202F, Method 213B, 6mS, Half-sine, mounted to a PCB Mechanical Vibration — Per Mil-STD-202F, Method 204D, 10-500Hz, Soldered in a PCB Weight — — — 28 — grams Isolation Capacitance Resistance — — — — — — 1500 — 10 — 1100 — — — — V pF MΩ Flammability — Materials meet UL 94V-0 Remote On/Off On (2) Off Referenced to –Vin 7.0 0.8 V 2.5 0 Notes: (1) See thermal derating curves. (2) If pin2 is left open, the converter will operate when input power is applied. For technical support and more information, see inside back cover or visit www.ti.com/powertrends Ordering Information Through-Hole PT4104A = 5 Volts PT4105A = 12 Volts PT4106A = 15 Volts Surface Mount PT4104C = 5 Volts PT4105C = 12 Volts PT4106C = 15 Volts (For dimensions and PC board layout, see Package Style 710.) Typical Characteristics PT4100—24V 15 Watt Isolated DC-DC Converter PT4104, 5.0 VDC PT4105, 12.0 VDC (See Note A.) Efficiency vs Output Current Efficiency vs Output Current 80 18V 24V 70 32V 60 40V 50 90 Vin Vin 80 18V 24V 70 32V 60 40V Efficiency - % Vin Efficiency - % 50 40 40 0 0.5 1 1.5 2 2.5 3 80 18V 24V 70 32V 60 40V 50 40 0.25 0.5 Iout-(Amps) 0.75 1 1.25 0.25 0.5 Iout-(Amps) Ripple vs Output Current Ripple vs Output Current 110 110 110 90 Vin 40V 70 32V 24V 50 18V Ripple-(mV) 90 0.75 1 Iout-(Amps) Ripple vs Output Current 90 Vin 40V 70 32V 24V 50 18V Ripple-(mV) Efficiency - % 100 90 90 (See Note A.) Efficiency vs Output Current 100 100 Ripple-(mV) PT4106, 15.0 VDC (See Note A.) Vin 70 40V 32V 50 24V 18V 30 30 30 10 10 0 0.5 1 1.5 2 2.5 10 0.25 3 0.5 Iout-(Amps) Thermal Derating (Ta) 1 1.25 0.25 0.5 Iout-(Amps) 0.75 (See Note B.) 1.25 Thermal Derating (Ta) 1 NO DERATING @ 85°C 0.8 1.5 1 0.75 Iout-(Amps) Iout-(Amps) 0.5 0.25 0 0 18 20 22 24 26 28 30 32 34 36 38 40 20 22 24 26 28 30 32 34 36 5 4 4 3 32V 24V 2 PD-(Watts) 40V 24 2.5 3 3 32V 24V 2 18V 0.25 28 30 32 34 36 4 40V 38 40 Vin 40V 3 32V 24V 2 18V 1 0 0 26 Power Dissipation vs Output Current Vin 1 1 Iout-(Amps) 22 5 18V 2 20 Vin-(Volts) Vin 1.5 18 40 Power Dissipation vs Output Current 5 1 38 Vin-(Volts) Power Dissipation vs Output Current 0.5 0.4 0 18 Vin-(Volts) 0 0.6 0.2 PD-(Watts) Iout-(Amps) 1 2 0.5 PD-(Watts) (See Note B.) NO DERATING @ 85°C NO DERATING @ 85˚C 2.5 1 Iout-(Amps) Thermal Derating (Ta) (See Note B.) 3 0.75 0 0.5 0.75 Iout-(Amps) 1 1.25 0.25 0.5 0.75 1 Iout-(Amps) Note A: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter. Note B: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. 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. 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