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

APPLICATIONS

 Datacom / Networking

 Wireless Networks

 Optical Network Equipment

 Server and Data Storage

 Industrial/Testing Equipment

SPECIFICATIONS

GENERAL SPECIFICATIONS

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: (888) 335 8201

West Coast: (888) 335 8208

Fax: (978) 656 3964

Email: [email protected]

Europe:

Telephone: +41 31 998 53 11

Fax: +41 31 998 53 53

Email: DCDC@delta-es.tw

Asia & the rest of world:

Telephone: +886 3 4526107 x 6220

Fax: +886 3 4513485

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.

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