FEATURES High efficiency: 87.0% 1.8V/25A Size: 33.0 x 22.9 x 9.5 mm (1.30x0.90x0.37) Industry standard footprint and pinout Fixed frequency operation SMD and through-hole versions Input UVLO and OVP OTP and output OCP, OVP Output voltage trim: -20%, +10% Monotonic startup into normal and pre-biased loads 2250V isolation and basic insulation No minimum load required No negative current during power or enable on/off ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS18001 certified manufacturing facility UL/cUL 60950 (US & Canada) recognized, th Delphi Series V48SR, 1/16 Brick 66W th OPTIONS The Delphi Series V48SR, 1/16 Brick, 48V input, single output, isolated DC/DC converter, is the latest offering from a world leader in SMD pins power systems technology and manufacturing Delta Electronics, Inc. Positive remote On/Off This product family provides up to 66 watts of power or 25A of output OTP and output OVP, OCP mode th current (1.8V and below) in an industry standard 1/16 brick form factor (auto-restart or latch) (1.30 x 0.90). The 1.8V output offers one of the highest output currents available and provides up to 87.0% efficiency at full load. With creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as well as extremely high reliability under highly stressful operating conditions. All modules are protected from abnormal input/output APPLICATIONS voltage, current, and temperature conditions. For lower power needs with Optical Transport the 1.5V output, but in a similar small form factor, please check out Delta Data Networking S48SP (1.5V/10A) and S48SE (1.5V/5A) series standard DC/DC Communications modules. Servers DATASHEET DS V48SR1R825 09262012 TECHNICAL SPECIFICATIONS (T =25C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted.) A in PARAMETER NOTES and CONDITIONS V48SR1R825 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to figure 21 for measuring point -40 127 C Storage Temperature -55 125 C Input/Output Isolation Voltage 2250 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 32 34 35 Vdc Turn-Off Voltage Threshold 30 32 33 Vdc Lockout Hysteresis Voltage 1 2 3 Vdc Maximum Input Current 100% Load, 36Vin 1.6 A No-Load Input Current 50 mA Off Converter Input Current 10 mA 2 2 Inrush Current (I t) 1 A s Input Reflected-Ripple Current P-P thru 12H inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz 60 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25C 1.782 1.800 1.818 Vdc Output Voltage Regulation Over Load Io=Io, min to Io, max 3 10 mV Over Line Vin=36V to 75V 3 10 mV Over Temperature Tc=-40C to125C 18 mV Total Output Voltage Range Over sample load, line and temperature 1.746 1.80 1.854 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1F ceramic, 10F tantalum 40 mV RMS Full Load, 1F ceramic, 10F tantalum 15 30 mV Operating Output Current Range 0 25 A Output Over Current Protection Output Voltage 10% Low 110 140 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, 10F Tan & 1F Ceramic load cap, 0.1A/s Positive Step Change in Output Current 50% Io.max to 75% Io.max 50 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 50 mV Settling Time (within 1% Vout nominal) 200 us Turn-On Transient Start-Up Time, From On/Off Control 30 ms Start-Up Time, From Input 30 ms Maximum Output Capacitance Full load 5% overshoot of Vout at startup 30000 F EFFICIENCY 100% Load 87.0 % 60% Load 87.0 % ISOLATION CHARACTERISTICS Input to Output 2250 Vdc Isolation Resistance 10 M Isolation Capacitance 1100 pF FEATURE CHARACTERISTICS Switching Frequency 420 kHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off 0.7 V Logic High (Module Off) Von/off 2 18 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off 0.7 V Logic High (Module On) Von/off 2 18 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=15V 50 uA Pout max rated power Output Voltage Trim Range -20 10 % Output Voltage Remote Sense Range Pout max rated power 10 % Output Over-Voltage Protection Over full temp range % of nominal Vout 130 % GENERAL SPECIFICATIONS MTBF Io=80% of Io, max Ta=25C, airflow rate=300FLM 2.0 M hours Weight 16 grams Over-Temperature Shutdown Refer to figure 21 for measuring point 130 C DS V48SR1R825 09262012 2