Delta E48SH User Manual

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Delphi Series E48SH, 120W Eighth Brick Family
DC/DC Power Modules: 48V in, 1.5V/40A out

The Delphi Series E48SH Eighth Brick, 48V input, single output, isolated
DC/DC converters are the latest offering from a world leader in powe
systems technology and manufacturing ― Delta Electronics, Inc. This
product family is available in either a through-hole or surface-mounted
package and provides up to 120 watts of power or 50A of output curren
(1.2V and below) in an industry standard footprint and pinout. The E48SH
converter operates from an input voltage of 36V to 75V and is available in
output voltages from 1.0V to 15V. Efficiency is 89% for 1.5V output at 40
full load. With creative design technology and optimization of componen
placement, these converters possess outstanding electrical and thermal
performance, as well as extremely high reliability under highly stressful
operating conditions.
input/output voltage, current, and temperature conditions. The Delphi Series
converters meet all safety requirements with basic insulation.

ll models are fully protected from abnormal

FEATURES

 High efficiency: 89% @1.5V/40A

 Size: 58.4mm x 22.8mm x 9.5mm

(2.30”x0.90”x0.37”)

 Industry standard pin out

 Fixed frequency operation

 Input UVLO, Output OTP, OCP, OVP

 Monotonic startup into normal and

pre-biased loads

 Secondary control, very fast transient

response

 2250V Isolation and basic insulation

 No minimum load required

 SMD and through-hole versions

 No negative current during power or enable

on/off

 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

OPTIONS

 Positive On/Off logic

 Short pin lengths available

 External Synchronization

 Output OVP latch mode

 Output OCP latch mode

 Heat spreader

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment

 Server and Data Storage

 Industrial/Test Equipment

DATASHEET
DS_E48SH1R540_02272007

TECHNICAL SPECIFICATIONS

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

PARAMETER NOTES and CONDITIONS E48SH1R540 (Standard)

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 75 Vdc

Transient (100ms) 100ms 100 Vdc
Operating Temperature Refer to Figure 21 for measuring point -40 125 °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 33 34 35 Vdc

Turn-Off Voltage Threshold 31 32 33 Vdc

Lockout Hysteresis Voltage 1.5 2 2.5 Vdc

Maximum Input Current 100% Load, 36Vin 2.2 A
No-Load Input Current 50 mA
Off Converter Input Current 3 mA
Inrush Current(I2t) 1 A2s
Input Reflected-Ripple Current P-P thru 12µH 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 1.485 1.5 1.515 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 85°C ±15 mV

Total Output Voltage Range over sample load, line and temperature 1.47 1.53 V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 30 60 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 10 20 mV

Operating Output Current Range 0 40 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 30 mV

Negative Step Change in Output Current 75% Io.max to 50% Io.max 30 mV

Settling Time (within 1% Vout nominal) 100 us

Turn-On Transient

Start-Up Time, From On/Off Control 10 ms

Start-Up Time, From Input 10 ms

Maximum Output Capacitance Full load; no overshoot of Vout at startup 40000 µF

EFFICIENCY

100% Load 89 %
60% Load 90.5 %

ISOLATION CHARACTERISTICS

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

FEATURE CHARACTERISTICS

Switching Frequency 200 kHz
ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On) Von/off at Ion/off=1.0mA 1.2 V

Logic High (Module Off) Von/off at Ion/off=0.0 µA 3 50 V

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off) Von/off at Ion/off=1.0mA 1.2 V

Logic High (Module On) Von/off at Ion/off=0.0 µA 3 50 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

Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection Over full temp range; % of nominal Vout 1.8 V

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; 300LFM @25C 2.05 M hours Weight 20 grams Over-Temperature Shutdown Refer to Figure 21 for measuring point 130 °C

Min. Typ. Max. Units

Across Pins 9 & 5, Pout ≦ max rated power

Pout ≦ max rated power

-20 10 %
10 %

E48SH1R540_02272007

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ELECTRICAL CHARACTERISTICS CURVES

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EFFICIENCY (%)

74

72

70

4 8 12 16 20 24 28 32 36 40

48Vin 36Vin 75Vin

OUTPUT CURRENT (A)

Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C

3

2.5

2

9

48Vin 36Vin 75Vin

7

5

LOSS (W)

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1

0 4 8 1216202428323640

OUTPUT CURRENT (A)

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

nominal, and maximum input voltage at 25°C.

1.5

INPUT CURRENT(A)

1

0.5

0

30 34 38 42 46 50 54 58 62 66 70 74 78

INPUT VOLTAGE(V)

Figure 3: Typical full load input characteristics at room
temperature

E48SH1R540_02272007

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ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 4: Turn-on transient at zero load current (5 ms/div).
Vin=48V.Top Trace: Vout, 1V/div; Bottom Trace: ON/OFF input,
5V/div

For Input Voltage Start up

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

current load) (5 ms/div). Vin=48V.Top Trace: Vout, 1V/div;
Bottom T race: ON/OFF input, 5V/div

Figure 6: Turn-on transient at zero load current (2 ms/div).
Vin=48V.Top Trace: Vout, 1V/div, Bottom Trace: input voltage,
5V/div

0

0

Figure 7: Turn-on transient at full rated load current (constant

current load) (2 ms/div). Vin=48V.Top Trace: Vout, 1V/div;
Bottom Trace: input voltage, 5V/div

E48SH1R540_02272007

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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. Trace: Vout
(20mV/div, 100us/div
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..

, Scope measurement should be made

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. Trace: Vout
(20mV/div, 100us/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 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 above

of 12 µH. Capacitor Cs offset

TEST

Figure 11: Input Terminal Ripple Current, i

current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (200 mA/div, 2us/div).

, at full rated output

c

E48SH1R540_02272007

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