Delta Electronics F48SA User Manual

Delphi Series F48SA, 700W Full Brick Family DC/DC Power Module: 48Vin, 28Vout

The Delphi Series F48SA, 48V input, single output, full brick sized

isolated DC/DC converter is the latest offering from a world leader in

power systems technology and manufacturing ― Delta Electronics,

Inc. The Delphi F48SA series provides up to 700 watts of power o

up to 25A of output current. This product family operates from a wide

input range of 36V to 75V. 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.

are protected from abnormal input/output voltage and curren

conditions, and feature 2250V input/output isolation and basic

insulation. An optional heatsink is available for extended operation.

ll models

FEATURES

 High efficiency: 91.5% @ 28V/25A

 Industry standard size and pinout:

61.0 x 116.8 x 12.7mm (2.40”x 4.60”x 0.50”)

 Fixed frequency operation

 Remote sense

 Input UVLO, Output OCP, OVP & OTP

 Auxiliary bias power

 Basic insulation

 2250V isolation

 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

 Heatsink for

 Output current monitoring

 Delayed overcurrent shutdo

 Parallel operation using forced

current sharing

extended operation

APPLICATIONS

 Telecom / DataCom

 Wireless Networks

 Optical Network Equ

 Server and Data Storage

 Industrial / Test Equipmen

ipment

DATASHEET DS_F48SA28025_12072007

TECHNICAL SPECIFICATIONS

Output overshoo

age du

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

PARAMETER NOTES and CONDITIONS F48SA28025 (Standard)

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 80 Vdc

Transient (100ms) 100ms 100 Vdc Operating Temperature Please refer to Fig 20 for measuring point -40 95 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 2250 Vdc

INPUT CHARACTERISTICS

Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout

Turn-On Voltage Threshold 33 34.5 36 Vdc

Turn-Off Voltage Threshold 31 32.5 34 Vdc

Lockout Hysteresis Voltage

Input Over-Voltage Lockout

Turn-On Voltage Threshold 76 78 80 Vdc

Turn-Off Voltage Threshold 78 80 82 Vdc

Lockout Hysteresis Voltage 2 Vdc

Maximum Input Current 100% Load, 36Vin 23 A Inrush Current(I2t) 1 A2s Input Reflected-Ripple Current P-P thru 15µH inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz 50 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 27.44 28.00 28.56 Output Voltage Regulation

Over Load Io=Io,min to Io,max 28 56 mV

Over Line Vin=36V to 75V 28 56 mV

Over Temperature Tc=-40°C to 100°C 100 300 mV

Total Output Voltage Range over all load, line and temperature 27.25 28.00 28.75 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF Low ESR cap 200 mV

RMS Full Load, 1µF ceramic, 10µF Low ESR cap 65 mV

Operating Output Current Range 2 25 A Output DC Current-Limit Inception Output Voltage 10% Low 120 150 %

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient

Positive Step Change in Output Current 50% Io.max to 75% Io.max 450 mV

Negative Step Change in Output Current 75% Io.max to 50% Io.max 450 mV

Settling Time (within 1% Vout nominal) 500 us

Turn-On Transient

Start-Up Time, From On/Off Control 20 35 ms

Start-Up Time, From Input 20 35

Output Capacitive Load 470 6000 µF

EFFICIENCY

100% Load 60% Load 91.5 %

ISOLATION CHARAC TERISTICS

Input to Output 2250 Vdc Input to Case Output to Case 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1800 pF

FEATURE CHARACTERISTICS

Switching Frequency 300 kHz

t Volt

Power good pin max applied voltage Max sink current 5mA 35 V

Auxiliary output voltage

Output Voltage Trim Range Output Voltage Remote Sense Range Output Over-Voltage Protection Over full temp range; % of nominal Vout 115 140 %

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Ta=25°C 1.14 M hours Weight 168 grams Over-Temperature Shutdown Please refer to Fig.20 for measuring point 100 °C

Min. Typ. Max. Units

48V, Tested with a 10µF, a 1µF Ceramic cap and a

470uF low ESR aluminum load cap,

ΔIo/Δt=1A/µs

ring start up

Aux pin source current <=20mA

Referenced to Sense(-) pin

Pout ≦ max rated power Pout ≦ max rated power

2 Vdc

Vdc

91.5 %

1500 Vdc

7 10 13 V

-15 +10 %

0.5 V

DS_F48SA28025_12072007

ELECTRICAL CHARACTERISTICS CURVES

EFFICIENCY (%)

0 5 10 15 20 25 30

36Vin 48Vi n 75Vin

OUT PUT CURRENT (A)

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.

DS_F48SA28025_12072007

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 3: Turn-on transient at full rated load current (resistive

load). CH3: Vout;5V/div; CH1: ON/OFF input: 5V/div

For Positive Remote On/Off Logic

Figure 5: Turn-on transient at full rated load current (resistive

load) (10ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF input: 2V/div

Figure 4: Turn-on transient at minimum load current

. CH3: Vout: 5V/div; CH1: ON/OFF input:5V/div

Figure 6: Turn-on transient at minimum load current

(10ms/div). Top Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 2V/div

DS_F48SA28025_12072007

+ 9 hidden pages