Delta Electronics S48SP User Manual

Delphi Series S48SP, 35W 1x1 Brick DC/DC Power Modules: 48V in, 5V/7A out

The Delphi Series S48SP, 1x1 Brick, 48V input, single output, isolated

DC/DC converters are the latest offering from a world leader in power

systems technology and manufacturing -- Delta Electronics, Inc. This

product family is available in a surface mount or through-hole package

and provides up to 35 watts of power or 10A of output current (3.3V and

below) in a new 1x1 form factor (1.3”x0.96”x0.33”). The pinout is

compatible with the industry standard 1x2 products. 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. Typical efficiency of the 5V/7A module is 90%. All modules

are fully protected against abnormal input/output voltage, current, and

temperature conditions.

FEATURES

 High efficiency: 90% @5V/7A

 Industry standard 1x2 pin out

 Size: 33.0x24.4x8.55mm

(1.30”x0.96”x0.34”)

 SMD and Through-hole versions

 Fixed frequency operation

 2:1 input voltage range

 Input UVLO, OVP

 OTP and output OCP, OVP (default is

auto-restart)

 Output voltage trim ±10%

 Negative On/Off  Monotonic startup into normal and

pre-biased loads

 2250V isolation and basic insulation

 No minimum load required

 ISO 9001, TL 9000, ISO 14001, QS9000,

OHSAS18001 certified manufacturing facility

 UL/cUL 60950 (US & Canada) recognized,

and TUV (EN60950) certified

 CE mark meets 73/23/EEC and 93/68/EEC

directive

OPTIONS

 Positive On/Off or no On/Off

 OTP and Output OVP, OCP mode,

Auto recovery (default) or latch-up

 SMD module available

 Short pin lengths

 Encapsulated case optional

APPLICATIONS

 Optical Transport

 Data Networking

 Communications, including Wireless and

traditional Telecom

 Servers

DATASHEET DS_S48SP05007_05222008

TECHNICAL SPECIFICATIONS

(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)

PARAMETER NOTES and CONDITIONS S48SP05007 (Standard)

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 80 Vdc

Transient(100ms) 100ms 100 Vdc Operating Case Temperature Refer to Figure 20 for measuring point -40 +111 °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 32.5 34 35.5 Vdc

Turn-Off Voltage Threshold 30.5 32 33.5 Vdc

Lockout Hysteresis Voltage 1.0 2.0 3.0 Vdc

Maximum Input Current 100% Load, 36Vin 1.10 A No-Load Input Current 35 mA Off Converter Input Current 10 mA Inrush Current (I2t) 0.01 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 10 mA Input Voltage Ripple Rejection 120 Hz 60 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 4.925 5.0 5.075 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=-40°C to 100°C ±50 mV

Total Output Voltage Range Over load, line and temperature 4.85 5.15 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 30 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 10 mV

Operating Output Current Range 0 7 A Output DC Current-Limit Inception Output Voltage 10% Low 110 140 %

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

Positive Step Change in Output Current 50% Io.max to 75% Io.max 150 mV

Negative Step Change in Output Current 75% Io.max to 50% Io.max 150 mV

Settling Time (within 1% Vout nominal) 100 us

Turn-On Transient

Start-Up Time, From On/Off Control 25 30 ms

Start-Up Time, From Input 25 30 ms

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 3000 µF

EFFICIENCY

100% Load 90.0 % 60% Load 88.5 %

ISOLATION CHARACTERISTICS

Input to Output 2250 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF

FEATURE CHARACTERISTICS

Switching Frequency 400 kHz ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On) Von/off -0.7 0.8 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 0.8 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 0.25 mA

Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 30 uA

Output Voltage Trim Range Output Over-Voltage Protection Over full temp range 5.75 7.5 V

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Ta=25°C; air flow 300LFM 2.82 M hours Weight 10.5 grams Over-Temperature Shutdown Refer to Fig. 20 for measuring point 123 °C

Min. Typ. Max. Units

Across Pins 4 & 5, Pout ≦ max rated power

-10% 10% %

DS_S48SP05007_05222008

ELECTRICAL CHARACTERISTICS CURVES

Figure 1: Efficiency vs. load current for minimum, nominal, and

maximum input voltage at 25°C

Figure 2: Power dissipation vs. load current for minimum,

nominal, and maximum input voltage at 25°C.

Figure 3: Typical full load input characteristics at room

temperature

DS_S48SP05007_05222008

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 4: Turn-on transient at full rated load current (5 ms/div).

Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input,

2V/div

For Positive Remote On/Off Logic

Figure 5: Turn-on transient at zero load current (5 ms/div).

Vin=48V. Top Trace: Vout, 2V/div, Bottom Trace: ON/OFF input,

2V/div

Figure 6: Turn-on transient at full rated load current (5 ms/div).

Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, 2V/div

Figure 7: Turn-on transient at zero load current (5 ms/div).

Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, 2V/div

DS_S48SP05007_05222008

ELECTRICAL CHARACTERISTICS CURVES

)

Figure 8: Output voltage response to step-change in load

current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div, 50us/div), Bottom Trace: Iout (2A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76

mm (2 inches to 3 inches) from the module

Figure 9: Output voltage response to step-change in load

current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div, 50us/div measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76

mm (2 inches to 3 inches) from the module

, Bottom Trace: Iout (2A/div). Scope

Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple

Current. Note: Measured input reflected-ripple current with a simulated source Inductance (L possible battery impedance. Measure current as shown below.

of 12 μH. Capacitor Cs offset

TEST

DS_S48SP05007_05222008

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