Delta Electronics Q48SX User Manual
Delphi Series Q48SX, 35A Quarter Brick
DC/DC Power Modules: 48V in, 3.3V and 5.0V out
The Delphi Series Q48SX (XENATM 100), Quarter Brick, 48V input,
single output, isolated DC/DC converters are the latest offering from a
world leader in power systems technology and manufacturing ― Delta
Electronics, Inc. The Q48SX product family provides up to 125 watts of
power or 35A of output current in an industry standard quarter brick
footprint and pinout. The open frame construction is optimized for
convection cooling over a wide operational ambient temperature range.
With creative design technology and optimization of component
placement, these converters possess outstanding electrical and thermal
performance, as well as extremely high reliability under highly stressful
operating conditions. The output trim pin also serves as a
synchronization function that can greatly reduce output ripple/noise
when multiple Q48SX modules are used and linked together. This is a
big boost to those applications that are extremely noise sensitive. All
Q48SX models are fully protected from abnormal input/output voltage,
current, and temperature conditions. The Delphi Series converters meet
all safety requirements with basic insulation.
FEATURES
High efficiency: 90.5% @ 3.3V/35A
Industry standard quarter brick footprint
Size: 57.9x36.8x9.5mm(2.28”x1.45”x0.37”)
(w/o heatspreader)
57.9x36.8x12.7mm(2.28”x1.45”x0.50”)
(with heatspreader)
Fixed frequency operation
Input UVLO, Output OTP, OCP, OVP
Output voltage trim +10%, -20%
Monotonic startup into normal and pre-biased
loads
Outstanding dynamic response:
30mV for 25% load step
Very low output ripple
No minimum load required
Basic insulation
Frequency synchronization from external
signal
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing facility
UL/cUL 60950 (US & Canada), TUV
(EN60950) and CE mark pending
OPTIONS
Surface mount version
Positive on/off logic
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
Medical Systems
DATABRIEF
DB_Q48SX_10272005
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Delta Electronics, Inc.
SPECIFICATIONS
GENERAL SPECIFICATIONS OUTPUT SPECIFICATIONS
Input Voltage
Switching Frequency
Isolation Voltage
MTBF
OTP
Size (w/o heatspreader)
Size (with heatspreader)
36~75V
Typical (3.3V) 300KHz
In/Out 1500 Vdc
Bellcore (3.3V) 1.9M hours
Typical 110°C
(2.28”x1.45”x0.37”) 57.9x36.8x9.5mm
(2.28”x1.45”x0.50”) 57.9x36.8x12.7mm
Voltage Accuracy
Line Regulation
Load Regulation
Ripple & Noise
Current Limits
Voltage Trim
Typical (3.3V) ±1%
Typical (3.3V) ±0.05%
Typical (3.3V) ±0.05%
Typical (3.3V) 18 mV
Typical (3.3V) 110%
+10%, -20%
PART NUMBERING SYSTEM
Q 48 S X 3R3 35 N R A
Type of
Product
Q – Quarter
Brick
Input
Voltage
Number of
Outputs
48V S - Single X – Xena 3R3 – 3.3V
Product
Series
Output
Voltage
050 – 5.0V
Output
Current
25 – 25A
35 – 35A
ON/OFF
Logic
N – Negative
P – Positive
Pin
Length/type
R – 0.170”
N – 0.145”
K – 0.110”
M - SMD
Option Code
Space-RoHS 5/6
F- RoHS 6/6
(Lead Free)
MODEL LIST
MODEL NAME
Q48SX3R335NR A
Q48SX05025NR A
36V~75V
36V~75V
INPUT
4.2A
4.5A
OUTPUT EFF @ 100% LOAD
3.3V 35A 90.5%
5.0V 25A 91.0%
MECHANICAL DRAWING
A – Standard
H - Heatspreader
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 4526107 ext 6220
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
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