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參數(shù)資料
| 型號(hào)： | PQ60012EGA20PKT |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-8 |
| 文件頁(yè)數(shù)： | 3/13頁(yè) |
| 文件大?。?/td> | 543K |
| 代理商： | PQ60012EGA20PKT |
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Product # PQ60012EGL20
Phone 1-888-567-9596
Doc.# 005-2EG621G Rev. B
02/10/06
Page 11
Input:
Output:
Current:
PPackage:
ackage:
35-75 V
1.2 V
20 A
Eighth-brick
T
Technical S
echnical Specification
pecification
Output Current Limit: The maximum current limit remains con-
stant as the output voltage drops. However, once the impedance
of the short across the output is small enough to make the output
voltage drop below the specified Output DC Current-Limit
Shutdown Voltage, the converter turns off.
The converter then enters a “hiccup mode” where it repeatedly
turns on and off at a 5 Hz (nominal) frequency with a 5% duty
cycle until the short circuit condition is removed. This prevents
excessive heating of the converter or the load board.
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the Output Over-Voltage Protection threshold, the
converter will immediately stop switching. This prevents damage
to the load circuit due to 1) excessive series resistance in output
current path from converter output pins to sense point, 2) a
release of a short-circuit condition, or 3) a release of a current
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 website which
provides an understanding of why this instability arises, and
shows the preferred solution for correcting it.
Application Circuits: Figure E below provides a typical circuit
diagram which details the input filtering and voltage trimming.
Input Filtering and External Capacitance: Figure F 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 Characteristics” 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 E: Typical application circuit (negative logic unit, permanently enabled).
Figure F: Internal Input Filter Diagram (component values listed on page 3).
Electrolytic
Capacitor
47F
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PQ60012EGL20NKSG | 制造商:SynQor 功能描述: |
| PQ60012EGL20NNS-G | 制造商:SynQor 功能描述:DC-DC CONV, ISO POL, 1 O/P, 20A, 1.2V; DC / DC Converter Type:Eighth Brick; DC / DC Converter Output Type:Fixed; Input Voltage DC Min:35V; Input Voltage DC Max:75V; No. of Outputs:1; Output Voltage Nom.:1.2V; Output Current Max:20A ;RoHS Compliant: Yes |
| PQ60012EGL20NNT-G | 制造商:SynQor 功能描述: |
| PQ60012HPAA0 | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:100 Amp, No Heatsink, Isolated DC/DC Converter |
| PQ60012HPAA0NKF | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:100 Amp, No Heatsink, Isolated DC/DC Converter |
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