Technical
S pecification
BQ50120QTA20
42-53V
Input
12V
Output
240Watt
Power
2000Vdc
Isolation
Quar ter-brick
DC Bus Conver ter
T he Bu s Qo r
™
B Q 5 0 1 2 0 Q T A 2 0 b u s c o n v e r t e r i s a n e x t - g e n -
e ra tion , bo ar d -mo un ta bl e, is ol ated , fixe d s witchi ng fr eq uen -
c y d c/d c con verter tha t u se s s y nch r on ou s r ectifi catio n to
a ch ieve extr emel y h igh con vers ion effic ien cy. Th e p ower
d is sip a t ed b y t he con v er te r is so l ow th a t a h eat s in k is no t
r eq ui red , whic h s av es c os t, wei ght , hei ght , an d a p pl ica t ion
e ffor t. T he Bu sQ or ser ies p r ov id es a n iso la t ed s t ep d own
vol tage fr om 48V to a 1 2V inter med ia te b us with n o regu -
l a tio n i n a s ta n da r d “ q ua rt er - br ick ” mod ul e. B us Q or con -
v er t ers a r e id ea l fo r cu st om ers wh o n eed mu l tip l e ou t p ut s
a n d wish to bu il d o r bu y p oin t of loa d co nver ter s to wor k
with a 12V rail. RoHS Compliant (see page 12 ).
Bus
Conver ter
Operational Features
• Ultra-high efficiency, >96% at full rated load current
• Delivers up to 20 amps (240 Watts) of output current
(power) with minimal derating - no heatsink required
• Input voltage range: 42V – 53V
• Fixed frequency switching provides predictable EMI per-
formance
BQ50120QTA20 Module
Pr otection Features
• Input under-voltage lockout and over-voltage
shutdown protects against abnormal input voltages
• Output current limit and short circuit protection
• Output over-voltage protection
• Thermal shutdown
Mechanical Features
• Industry standard quarter-brick bus converter pin-out
• Industry standard size: 1.45” x 2.3” (36.8x58.4mm)
• Total height only 0.43” (10.9mm), permits better airflow
and smaller card pitch
• Total weight: 1.5 oz. (42 grams)
• Flanged pins designed to permit surface mount solder-
ing (can avoid wave solder) using FPiP technique
Safety Features
• 2000V, 30 MΩ input-to-output isolation
• UL/cUL 60950-1 recognized (US & Canada), basic
insulation rating
• TUV certified to EN60950-1
• Meets 72/23/EEC and 93/68/EEC directives
• Meets UL94V-0 flammability requirements
Contr ol Features
• On/Off control referenced to input side
• Current sharing allowed without the use of any external
circuitry.
Product # BQ50120QTA20
Phone 1-888-567-9596
Doc.# 005-2BQ512J Rev. E
03/17/06
Page 1
SYNQOR [ SYNQOR WORLDWIDE HEADQUARTERS ]
