FEATURES
High efficiency: 90.5% @ 3.3V/ 20A
Size: 58.4mm x 22.9mm x 8.4mm
(2.30”x0.90”x0.33”)
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OTP, OCP, OVP
2250V isolation
Basic insulation
No minimum load required
SMD and through-hole versions
ISO 9000, TL 9000, ISO 14001 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 E48SR, 66W Eighth Brick Family
DC/DC Power Modules: 48V in, 1.2V~15V out
The Delphi Series E48SR Eighth Brick, 48V input, single output,
isolated DC/DC converter is the latest offering from a world leader in
power systems technology and manufacturing --Delta Electronics,
Inc. This product family provides up to 66 watts of power or 25A of
output current (1.8V and below) in an industry standard footprint.
With creative design technology and optimization of component
placement, these converters possess outstanding electrical and
thermal performances, as well as extremely high reliability under
highly stressful operating conditions. All models are fully protected
from abnormal input/output voltage, current, and temperature
conditions. The Delphi Series converters meet all safety
requirements with ba sic insulation.
OPTIONS
Positive On/Off logic
Short pin lengths available
SMD pin
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
Data Brie
f
DB_E48SR_02032005
Delta Electronics, Inc.
2
SPECIFICATIONS
GENERAL SPECIFICATIONS OUTPUT SPECIFICATIONS
Input Voltage 36~75V Voltage Accuracy Typical ±1%
Switching Frequency Typical 350KHz Line Regulation Typical ±0.1%
Isolation Voltage In/Out 2250V Load Regulation Typical ±0.1%
Isolation Capacitance Typical 1500PF Ripple & Noise Typical (1.8V) 40 mV
Isolation Resistance Minimum 10MΩ Current Limits Typical 130%
MTBF Bellcore (1.8V) 3M hrs Over Voltage Typical 120%
OTP Typical 105°C Voltage Trim +10%, -10%
Size (2.30”x0.90”x0.33”) 58.4x22.9x8.4mm
PART NUMBERING SYSTEM
E 48 S R 3R3 20 N R A
Type of
Product Input
Voltage Number of
Outputs Product
Series Output
Voltage Output
Current ON/OFF
Logic Pin Length Space Option
Code
E - Eighth Brick
48- 36~75V S - Single R- Regular
1R2 - 1.2V
1R5 - 1.5V
1R8 - 1.8V
2R5 - 2.5V
3R3 - 3.3V
050 - 5.0V
120 - 12V
150 - 15V
04 - 4A
05 - 5A
07 - 7A
12 - 12A
20 - 20A
25 - 25A
N - Negative
P - Positive
R - 0.170”
N - 0.145”
K - 0.110”
M - SMD pin
A - Standard
Functions
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
E48SR1R225NR A 36V~75V 1.3A 1.2V 25A 88.0%
E48SR1R525NR A 36V~75V 1.5A 1.5V 25A 89.5%
E48SR1R825NR A 36V~75V 1.8A 1.8V 25A 90.5%
E48SR2R520NR A 36V~75V 1.9A 2.5V 20A 89.0%
E48SR3R320NR A 36V~75V 2.5A 3.3V 20A 90.5%
E48SR05012NR A 36V~75V 2.1A 5.0V 12A 91.5%
E48SR12005NR A 36V~75V 2.2A 12V 5A 92.0%
E48SR12007NR A 36V~75V 3.0A 12V 7A 93.0%
E48SR15004NR A 36V~75V 2.2A 15V 4A 91.5%
MECHANICAL DRAWINGS
Through-hole module Surface-mount module
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 45 26107 ext 6220
Fax: +886 3 45134 85
Email: DCDC@delta.com.tw
