Delta Electronics Series Q48SB User manual

OPTIONS
 Positive On/Off logic
 Short pin lengths
 Heatsink available for extended
operation
DATABRIEF
DB_Q48SB_10202006
Delphi Series Q48SB, 300W Bus Converter
DC/DC Power Modules: 48V in, 12V/25A out
The Delphi Series Q48SB, 48V input, single output, quarter brick,
300W bus converters are the latest offering from a world leader in
power systems technology and manufacturing -- Delta Electronics,
Inc. This product family supports intermediate bus architectures and
powers multiple downstream non-isolated point-of-load (POL)
converters. The Delphi Series Q48SB operates from a nominal 48V
input and provides up to 300W of power or 28A of output current in
an industry standard quarter brick footprint. The Q48SB product
currently supports two input ranges: the Q48SB120 features an input
voltage range of 42V to 53V and provides an unregulated output of
12V at 20A or 25A. The Q48SB108 features a wider input voltage
range of 36V to 60V and provides an unregulated output of 10.8V at
up to 28A. Typical efficiency for the 12V/25A module is 96%. With
optimized component placement, creative design topology, and
numerous patented technologies, the Q48SB bus converter delivers
outstanding electrical and thermal performance. An optional heatsink
is available for harsh thermal requirements.
FEATURES
 High efficiency: 96% @ 12V/20A, 25A
95.5% @ 10.8V/28A
 Standard footprint: 57.9x 36.8x 12.7mm
(2.28”x1.45”x0.50”)
 Industry standard pin out
 Fully protected: UVLO, OTP, OCP, OVP
 2250V isolation
 Basic insulation
 No minimum load required
 ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
 UL/cUL 60950 (US & Canada), and TUV
(EN60950) certified
 CE mark meets 73/23/EEC and 93/68/EEC
directives
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APPLICATIONS
 Datacom / Networking
 Wireless Networks
 Optical Network Equipment
 Server and Data Storage
 Industrial/Testing Equipment

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SPECIFICATIONS
GENERAL SPECIFICATIONS
OU
TPUT SPECIFICATIONS
Input Voltage 42~53V Voltage Accuracy Typical 3.5V
Switching Frequency Typical 150KHz Line Regulation Typical (Q48SB12020) 2.4V
Isolation Voltage In/Out 2250V Typical (Q48SB12025) 2.7V
Isolation Capacitance Typical (Q48SB12020) 500pF Load Regulation 0%~100% 500mV
Typical (Q48SB12025) 960pF Ripple & Noise 20MHz BW Typical 90 mV (Q48SB12020)
Isolation Resistance Minimum 10M ohm 100mV (Q48SB12025)
Size (Q48SB12020) 57.9x36.8x10.9mm 2.28”x1.45”x0.43” Current Limits Typical (Q48SB12020) 25A
(Q48SB12025) 57.9x36.8x12.7mm 2.28”x1.45”x0.50” Typical (Q48SB12025) 30A
PART NUMBERING SYSTEM
Q 48 S B 120 20 N R F A
Type of
Product Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code
Q- Quarter
Brick
48V S- Single B- Bus
Converter 120- 12V 108- 9.6V 20- 20A 25- 25A
31- 31A
N- Negative
P- Positive
R- 0.170”
N- 0.145”
K- 0.110”
F- RoHS 6/6
(Lead Free) A- Standard Functions
H- with heat spreader
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
Q48SB10828NRFA 36V~60V 6.3A 9.6V 31A 95.5%
Q48SB12020NRFA 42V~53V 5A 12V 20A 96.0%
Q48SB12025NRFA 42V~53V 6.25A 12V 25A 96.0%
Default remote on/off logic is negative and pin length is 0.170”
For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales
MECHANICAL DRAWING
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: [phone]
West Coast: [phone]
Fax: [phone]
Email: [email protected]
Europe:
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Asia & the rest of world:
Telephone: [phone] x 6220
Fax: [phone]
Email: [email protected]
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any
infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent
or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice.