PQ40033QGA25NNS-G SYNQOR, PQ40033QGA25NNS-G Datasheet - Page 12

• Manufacturer Part Number: PQ40033QGA25NNS-G
• Description: PowerQor DC/DC Converters
• Manufacturer: SYNQOR

Specifications of PQ40033QGA25NNS-G

• Dc / Dc Converter O/p Type: Fixed
• No. Of Outputs: 1
• Input Voltage: 18V To 75V
• Power Rating: 82W
• Output Voltage: 3.3V
• Output Current: 25A
• Approval Bodies: CUL, TUV, UL
• Supply Voltage: 48V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Product # PQ40033QGA25
T
T
APPLICATION CONSIDERATIONS
Input System Instability: This condition can occur because
any DC/DC converter appears incrementally as a negative
resistance load. A detailed application note titled “Input
System Instability” is available on the SynQor website which
provides an understanding of why this instability arises, and
shows the preferred solution for correcting it.
Application Circuits: Figure D provides a typical circuit dia-
gram which details the input filtering and voltage trimming.
Input Filtering and External Capacitance: Figure E pro-
vides a diagram showing the internal input filter components.
This filter dramatically reduces input terminal ripple current,
which otherwise could exceed the rating of an external input
electrolytic capacitor. The recommended external input capaci-
tance is specified in the Input Characteristics section on the
Electrical Specifications page.
available in the application note titled “EMI Characteristics” on
the SynQor website.
* See Electrical Characteristics page.
echnical S
echnical S
V
in
Figure E: Internal Input Filter Diagram
pecification
pecification
Figure D: Typical application circuit (negative logic unit, permanently enabled).
External
Input
Filter
Phone [phone]
V
V
in(+)
in( _ )
More detailed information is
Electrolytic
Capacitor
47µF
www.synqor.com
V
ON/OFF
V
L
(component values listed on the specifications page)
in(+)
in( _ )
V
V
sense(+)
Doc.# 005-2QG333D Rev. B
sense( _ )
V
V
out(+)
out( _ )
Trim
C
P
R
P
R
trim-up
Current:
trim-down
Current:
ackage:
ackage:
Output:
Output:
or
Input:
Input:
C
load
05/05/06
.
18-75 V
3.3 V
25 A
Quarter-brick
18-75 V
3.3 V
25 A
Quarter-brick
I
load
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