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參數(shù)資料
| 型號(hào)： | PQ60018HGA40NNS |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 封裝： | HALF-BRICK PACKAGE-12 |
| 文件頁(yè)數(shù)： | 3/14頁(yè) |
| 文件大?。?/td> | 1010K |
| 代理商： | PQ60018HGA40NNS |
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a release of a short-circuit condition, or 3) a release of a cur-
rent limit condition. Load capacitance determines exactly how
high the output voltage will rise in response to these conditions.
After 200 ms the converter will automatically restart.
Over-Temperature Shutdown: A temperature sensor on
the converter senses the average temperature of the module.
The thermal shutdown circuit is designed to turn the converter
off when the temperature at the sensed location reaches the
Over-Temperature Shutdown value. It will allow the converter to
turn on again when the temperature of the sensed location falls
by the amount of the Over-Temperature Shutdown Restart
Hysteresis 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
correcting 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 rip-
ple current, which otherwise could exceed the rating of an
external electrolytic input capacitor. The recommended exter-
nal input capacitance is specified in the “Input Characterisitcs”
section. More detailed information is available in the applica-
tion note titled “EMI Characteristics” on the SynQor website.
Product # PQ60050HGA30
Phone 1-888-567-9596
Doc.# 005-2HG650C Rev.
E
9/30/08
Page 11
Half
Brick
Technical Specification
48Vin 5.0Vout 30A
Vin
External
Input
Filter
Trim
Vin(+)
Iload
Cload
C1
L
C2
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Electrolytic
Capacitor
33F
ESR
1
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on page 3).
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