Delta Electronics H48SR User Manual

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FEATURES

 High Efficiency 89% @ 1.8V/80A

 Standard footprint: 58.4 x 61.0 x 11.7mm

(2.30” x2.40” x0.46”)

 Industry standard pin out

 Startup into pre-biased load

 Fixed frequency operation

 Fully protected: OTP, OVP, OCP, UVLO

 No minimum load required

 Wide output trim range

 Fast transient response

 Basic insulation

 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 directives

Delphi Series H48SR, 200W Half Brick Family
DC/DC Power Modules: 48V in, 1.8V/80A out

The Delphi Series H48SR Half Brick, 48V input, adjustable single

output, isolated, open frame DC/DC converters are the latest offering

from a world leader in power systems technology and manufacturing —

Delta Electronics, Inc. This product family provides up to 200 watts o

power or up to 80A of output current in an industry standard footprint.

This product represents the next generation of design technology which

may be utilized to provide high levels of current at very low output

voltages required by today’s leading-edge circuitry. Utilizing an

advanced patented thermal and electrical design technology, the Delphi

Series H48SR converters are capable of providing much higher output

current capability with excellent transient response and lower common

mode noise. Featuring a wide operating output voltage range and high

current at low output voltages, these units offer more useable powe

over a wide range of ambient operating conditions. The wide range

trimmable output feature allows the user to both reduce and

standardize part numbers across different and/or migrating voltage

requirements.

OPTIONS

 Short lead lengths

 Latching/non-latching over voltage

protection

 Positive/negative trim

 Positive/negative remote on/off

 100V/100ms transient capability or

80V input OVLO

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment
 Server and Data Storage

 Industrial/Test Equipment

DATASHEET
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Delta Electronics, Inc.

TECHNICAL SPECIFICATIONS

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(TA=25°C, airflow rate=300 LFM, V

PARAMETER

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous
Transient (100ms) 100ms 100 Vdc

Operating Device Temperature Tc -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 5 A
No-Load Input Current 100 140 mA
Off Converter Input Current 15 25 mA
Inrush Current(I2t) 0.03 A2S
Input Reflected-Ripple Current
Input Voltage Ripple Rejection 120 Hz 60 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 1.75 1.8 1.85
Output Voltage Regulation

Over Load Io=Io,min to Io,max ±2 ±7 mV
Over Line Vin=36V to 75V ±2 ±5 mV

Over Temperature Tc=-40°C to 100°C ±20 ±50 mV
Total Output Voltage Range over sample load, line and temperature TBD TBD V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 70 120 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 20 40 mV
Operating Output Current Range 0 80 A
Output DC Current-Limit Inception Output Voltage 10% Low 105 130 %

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 (within 1% Vout nominal) 200 uS
Turn-On Transient

Start-Up Time, From On/Off Control 10 20 mS

Start-Up Time, From Input -40°C to +125°C 20 40

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 20000 µF

EFFICIENCY

100% Load
60% Load 90 %

ISOLATION CHARACTERISTICS

Input to Output 1500 Vdc
Isolation Resistance 10 MΩ
Isolation Capacitance 3000 pF

FEATURE CHARACTERISTICS

Switching Frequency 240 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 Logic High, Von/off=15V 50 uA
Output Voltage Trim Range Across Pins 9 & 5, Pout <= max rated powe
Output Voltage Remote Sense Range Pout <= max rated power 10 %
Output Over-Voltage Protection Over full temp range; % of nominal Vout 115 130 155 %

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Ta=25°C,airflow rate=300 LFM 1.41 M hours

Weight 66 grams
Over-Temperature Shutdown Power Region Temperature 130 °C

=48Vdc, nominal Vout unless otherwise noted.)

in

NOTES and CONDITIONS H48SR1R880NRFA

P-P thru 12µH inductor, 5Hz to 20MHz 10 mA

89 %

Min. Typ. Max. Units

80 Vdc

-55 125 °C

36 48 75 Vdc

32.5 34 35 Vdc
31 32 33.5 Vdc

1 2 3 Vdc

0.8 1.9 V

Vdc

mS

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ELECTRICAL CHARACTERISTICS CURVES

95

36Vin 48Vin 75Vin

90

85

EFFICIENT (%)

80

75

70

65

60

10 20 30 40 50 60 70 80

OUTPUT CURRENT (A)

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

maximum input voltage at 25°C. (Vout=1.8V)

90

85

24.0

36Vin 48Vin 75Vin

20.0

16.0

POWER DISSIPATION (W)

12.0

8.0

4.0

0.0

10 20 30 40 50 60 70 80

OUTPUT CURRENT(A)

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

nominal, and maximum input voltage at 25°C. (Vout=1,8V)

24.0

36Vin 48Vin 75Vin

20.0

EFFICIENT (%)

80

75

70

65

36Vin 48Vin 75Vin

60

10 20 30 40 50 60 70 80

OUTPUT CURRENT (A)

Figure 3: Efficiency vs. load current for minimum, nominal, and

maximum input voltage at 25°C. (Vout=0.8V)

16.0

POWER DISSIPATION (W)

12.0

8.0

4.0

0.0

10 20 30 40 50 60 70 80

OUTPUT CURRENT(A)

Figure 4: Power dissipation vs. load current for minimum,

nominal, and maximum input voltage at 25°C. (Vout=0.8V)

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ELECTRICAL CHARACTERISTICS CURVES

90

88

86

EFFICIENCY (%)

84

82

80

78

36Vin 48Vin 75Vin

76

0.8 1.0 1.2 1.4 1.6 1.8

OUTPUT VOLTAGE (V)

Figure 5: Efficiency vs. output voltage for minimum, nominal,

and maximum input voltage at 25°C. (Iout=80A)

6.0

Io=80A Io=48A Io=8A

5.0

24.0

22.0

20.0

POWER DISSIPATION (W)

18.0

16.0

14.0

12.0

36Vin 48Vin 75Vin

10.0

0.8 1.0 1.2 1.4 1.6 1.8

OUTPUT VOLTAGE (V)

Figure 6: Power dissipation vs. output voltage for minimum,

nominal, and maximum input voltage at 25°C. (Iout=80A)

4.0

INPUT CURREN (A)

3.0

2.0

1.0

0.0

30 35 40 45 50 55 60 65 70 75

INPUT VOLTAGE (V)

Figure 7: Typical input characteristics at room temperature Figure 8: Turn-on transient at full rated load current (resistive

load) (1 ms/div). Top Trace: Vout; 1V/div; Bottom Trace:

ON/OFF input: 2V/div

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