FEATURES High efficiency : 86% 3.3V/7.5A Size: 19.1mmx23.4mmx8.9mm (0.92x0.75x0.35) Standard footprint Fixed frequency operation Hiccup output over current protection (OCP) Hiccup output over voltage protection (OVP) Auto recovery OTP Input UVLO Output voltage trim:-20%,+10% Pre-biased loads 1500V isolation and basic insulation No minimum load required ISO 9001, TL 9000, ISO 14001, QS9000, OHSAS18001 certified manufacturing facility UL/cUL 60950-1 (US & Canada) recognized Delphi Series T48SR, 1/32 Brick Family OPTIONS DC/DC Power Modules: Latched over voltage protection 36~75V in, 3.3V/7.5A out, 24.75W Positive On/Off logic The Delphi series T48SR3R307, 1/32 brick, 36V~75V input, single output, isolated DC/DC converter is the latest offering from a world leader in power system and technology and manufacturing Delta Electronics, Inc. This product provides up to 24.75 watts of power in an industry standard footprint and pin out. With creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performances, as well as extremely high reliability under highly stressful operating conditions. The APPLICATIONS T48SR3R307 offers more than 86% high efficiency at 7.5A full load. Telecom / Datacom Wireless Networks Optical Network Equipment Server and Data Storage Industrial / Testing Equipment DATASHEET DS T48SR3R307 10162012 TECHNICAL SPECIFICATIONS (T =25C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted A in PARAMETER NOTES and CONDITIONS T48SR3R307 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient 100ms 100 Vdc Operating Temperature -40 85 C Storage Temperature -55 125 C Input/Output Isolation Voltage 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 32.5 34 35.5 Vdc Turn-Off Voltage Threshold 30.5 32 33.5 Vdc Lockout Hysteresis Voltage 1 2 5 Vdc Maximum Input Current 100% Load, 36Vin 1 A No-Load Input Current Vin=48V, Io=0A 40 mA Off Converter Input Current Vin=48V, Io=0A 9 mA 2 2 Inrush Current (I t) 1 A s Input Reflected-Ripple Current P-P thru 12H inductor, 5Hz to 20MHz 40 mA Input Voltage Ripple Rejection 120 Hz -50 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=0, Tc=25C 3.25 3.3 3.35 Vdc Output Voltage Regulation Over Load Vin=48V, Io=Io,min to Io,max 5 10 mV Over Line Vin=36V to 75V, Io=Io max 5 10 mV Over Temperature Vin=48V, Tc=-40C to 85C 10 mV Total Output Voltage Range over sample load, line and temperature 3.2 3.4 Vdc Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 400F ceramic 25 mV RMS Full Load, 400F ceramic 5 mV Operating Output Current Range 0 7.5 A Output DC Current-Limit Inception Output Voltage 10% Low 110 160 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, 400F Ceramic load cap, 1A/s Positive Step Change in Output Current 50% Io.max to 75% Io.max 115 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 115 mV Settling Time (within 1% Vout nominal) 130 s Turn-On Transient Start-Up Time, From On/Off Control 10 30 ms Start-Up Time, From Input 15 30 ms Maximum Output Capacitance Full load 0 400 5000 F EFFICIENCY 100% Load Vin=48V 86 % 60% Load Vin=48V 85 % ISOLATION CHARACTERISTICS Input to Output 1500 Vdc Isolation Resistance 10 M Isolation Capacitance 1300 pF FEATURE CHARACTERISTICS Switching Frequency 480 KHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off at Ion/off=1.0mA 0 0.8 V Logic High (Module Off) Von/off at Ion/off=0.0 A 2.4 5 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off at Ion/off=1.0mA 0 0.8 V Logic High (Module On) Von/off at Ion/off=0.0 A 2.4 5 V ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 1 mA Leakage Current (for both remote on/off logic) Logic High, Von/off=5V uA Output Over-Voltage Protection 120 140 % GENERAL SPECIFICATIONS MTBF Vin=48V Io=80% of Io, max Ta=25C 100LFM 5.3 M hours Weight(open frame) 8.2 grams Refer to Figure 24 for Hot spot location Over-Temperature Shutdown (Hot Spot) 128 C (48Vin,80%Io, 200LFM,Airflow from Vin+ to Vin-) Over-Temperature Shutdown (NTC Resistor) Refer to Figure 24 for NTC resistor location 125 C Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots temperature is just for reference. DS T48SR3R307 10162012 2