參數(shù)資料
型號: PQ60120EKL04NKS-G
廠商: SYNQOR INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 48 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, EIGHTH BRICK PACKAGE-8
文件頁數(shù): 5/15頁
文件大小: 1262K
代理商: PQ60120EKL04NKS-G
Product # PQ60120EKx04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005190 Rev. A
07/13/09
Page 13
Input:
Output:
Current:
Part No.:
35-75V
12V
4A
PQ60120EKx04
Technical Specification
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 below provides a typical circuit
diagram which details the input filtering and voltage trimming.
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
input electrolytic capacitor. The recommended external input
capacitance is specified in the “Input Characteristics” section.
More detailed information is available in the application note
titled “EMI Characteristics” on the SynQor website.
Startup Inhibit Period: The Startup Inhibit Period ensures
that the converter will remain off for approximately 200ms
when it is shut down for any reason. In all, there are five ways
that the converter can be shut down, initiating a Startup Inhibit
Period:
Input Under-Voltage Lockout
Output Over-Voltage Protection
Over Temperature Shutdown
Current Limit
Turned off by the ON/OFF input
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 the specifications page).
Electrolytic
Capacitor
47F
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