參數(shù)資料
型號(hào): PQ60025EGL25PNS
廠商: SYNQOR INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
文件頁數(shù): 3/13頁
文件大小: 570K
代理商: PQ60025EGL25PNS
Product # PQ60025EGL25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG625B Rev. B
5/21/04
Page 11
Input:
Output:
Current:
P
Package:
ackage:
35-75 V
2.5 V
25 A
Eighth-brick
T
Technical S
echnical Specification
pecification
value.
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 web site
(www.synqor.com) which provides an understanding of why
this instability arises, and shows the preferred solution for cor-
recting it.
Application Circuits: Figure D below provides a typical cir-
cuit diagram which details the input filtering and voltage trim-
ming.
Input Filtering and External Capacitance: Figure E below
provides 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 elec-
trolytic input capacitor. The recommended external input capac-
itance is specified in the “Input Characterisitcs” section. More
detailed information is available in the application note titled
“EMI Characteristics” on the SynQor website.
Vin
External
Input
Filter
Trim
Vin(+)
Iload
Cload
L
C
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on page 3).
Electrolytic
Capacitor
47F
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