Delta Electronics S48SA User Manual

FEATURES

 High efficiency: 90.5% @ 5V/ 6.6A

 Size: 47.2mm x 29.5mm x 8.35mm

(1.86" x 1.16" x 0.33")

 Low profile: 0.33"

 Industry standard footprint and pin out

 Surface mountable

 Fixed frequency operation

 Input UVLO, Output OCP, OVP

 No minimum load required

 2:1 input voltage range

 Basic insulation

 ISO 9001, TL 9000, ISO 14001, QS 9000,

OHSAS 18001 certified manufacturing

facility

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

and TUV (EN60950) certified

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

directive

Delphi Series S48SA, 33W Family DC/DC Power Modules: 48V in, 5V/6.6A out

The Delphi Series S48SA, surface mountable, 48V 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 family provides up to 33 watts of powe

or up to 12A of output current (for output voltage 1.8V or under). With

creative design technology and optimization of componen

placement, these converters possess outstanding electrical and

thermal performance, as well as extremely high reliability unde

highly stressful operating conditions. All models are protected from

abnormal input/output voltage and current conditions.

OPTIONS

 Positive on/off logic

 Through hole pin

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment  Server and Data Storage

 Industrial/Test Equipment

DATASHEET DS_S48SA05006_06022006

Delta Electronics, Inc.

TECHNICAL SPECIFICATIONS

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

PARAMETER

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous Transient (100ms) 100ms 100 Vdc

Operating Temperature Refer to Figure 18 for measuring point -40 115 °C Storage Temperature Input/Output Isolation Voltage 1 minute 1500 Vdc

INPUT CHARACTERISTICS

Operating Input Voltage Input Under-Voltage Lockout

Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage

Maximum Input Current 100% Load, 36Vin 1.3 A No-Load Input Current 40 mA Off Converter Input Current 7 Inrush Current(I2t) 0.01 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 5 mA Input Voltage Ripple Rejection 120 Hz 50 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Output Voltage Regulation

Over Load Io=Io,min to Io,max ±2 ±10 mV Over Line Vin=36V to75V ±2 ±5 mV

Over Temperature Total Output Voltage Range Over sample 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 75 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 8 20 mV Operating Output Current Range 0 6.6 A Output DC Current-Limit Inception Output Voltage 10% Low 7.26 8.5 9.9 A

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 50 100 mV

Negative Step Change in Output Current 75% Io,max to 50% Io.max 50 100 mV

Settling Time to 1% of Final value 200 µs Turn-On Transient

Start-Up Time, From On/Off Control 6 12 ms

Start-Up Time, From Input 6 12

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 2200 µF

EFFICIENCY

100% Load

ISOLATION CHARACTERISTICS

Isolation Voltage 1500 V Isolation Resistance 10 MΩ Isolation Capacitance 1500 pF

FEATURE CHARACTERISTICS

Switching Frequency 330 kHz ON/OFF Control, (Logic Low-Module ON)

Logic Low Von/off at Ion/off=1.0mA 0 0.8 V

Logic High Von/off at Ion/off=0.0 µA 15 V

ON/OFF Current Ion/off at Von/off=0.0V 1 mA

Leakage Current Output Voltage Trim Range Output Over-Voltage Protection(Hiccup) Over full temp range; % of nominal Vout 115 125 140 %

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Tc=40°C 4.81 M hrs Weight 18 grams Over-Temperature Shutdown Refer to Figure 18 for measuring point 115 °C

NOTES and CONDITIONS S48SA05006NRFA

Min. Typ. Max. Units

Vin=48V, Io=50%Io.max, Ta=25℃

Ta=-40℃ to 85℃

88.5 90.5 %

Logic High, Von/off=15V 50 uA

cross Trim Pin & +Vo or –Vo, Pout≦max rated

80 Vdc

-55 125 °C

36 48 75 V

32.5 34 35.5 V

30.5 32 33.5 V

1 2 3 V

4.92 5 5.08

100 300

-10 +10 %

m/℃

DS_S48SA05006_06022006

ELECTRICAL CHARACTERISTICS CURVES

EFFICIENCY (%)

4.0

3.5

3.0

2.5

POWER DISSIPATION (W)

36Vin

1234566

48Vin

75Vin

OUT PUT CURRENT (A)

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

maximum input voltage at 25

1.2

1.0

INPUT CURRENT (A )

0.8

0.6

0.4

°C.

Io=6.6A

Io=3.96A

Io=0.66A

2.0

1.5

1.0

0.5

0.0

123456

36Vin

48Vin

75Vin

6.6

OUTPUT CURRENT (A)

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

nominal, and maximum input voltage at 25

°C.

0.2

0.0 30 35 40 45 50 55 60 65 70 75

INPUT VOLT AGE (V)

Figure 3: Typical input characteristics at room temperature. Figure 4: Turn-on transient at full rated load current (2 ms/div).

Top Trace: Vout (2V/div); Bottom Trace: ON/OFF Control (5V/div).

DS_S48SA05006_06022006

ELECTRICAL CHARACTERISTICS CURVES



)

Figure5: Turn-on transient at zero load current (2 ms/div). Top

Trace: Vout (2V/div); Bottom Trace: ON/OFF Control (5V/div).

Figure 6: Output voltage response to step-change in load

current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, 100 m

Ω

ESR tantalum capacitor and 1µF ceramic capacitor.

Top Trace: Vout (50mV/div), Bottom Trace: Iout (2A/div).

Figure 7: Output voltage response to step-change in load

current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, 100 m capacitor. Top Trace: Vout (50mV/div), Bottom Trace: Iout 2A/div).

Ω

ESR tantalum capacitor and 1µF ceramic

DS_S48SA05006_06022006

Figure 8: Test set-up diagram showing measurement points

for Input Reflected Ripple Current (Figure 9). Note: Measured input reflected-ripple current with a simulated

source Inductance (L possible battery impedance.

of 12 µH. Capacitor Cs offset

TEST

+ 9 hidden pages