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參數(shù)資料
| 型號(hào)： | DQ65033QKA04PKS |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 40 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 6/15頁 |
| 文件大小： | 546K |
| 代理商： | DQ65033QKA04PKS |
Product # DQ65033QKA04
Phone 1-888-567-9596
Doc.# 005-2DQ653L Rev. B
11/11/04
Page 14
T
Technical S
echnical Specification
pecification
Input:
Outputs:
Current:
P
Package:
ackage:
35-75V
5.0V & 3.3V
40W
Quarter-brick
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 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.
Startup Inhibit Period: The Startup Inhibit Period ensures that
the converter will remain off for at least 200ms when it is shut
down for any reason. When an output short is present, this gen-
erates a 5Hz "hiccup mode," which prevents the converter from
overheating. In all, there are seven ways that the converter can
be shut down, initiating a Startup Inhibit Period:
Input Under-Voltage Lockout
Input Over-Voltage Shutdown (not present in Quarter-brick)
Output Over-Voltage Protection
Over Temperature Shutdown
Current Limit
Short Circuit Protection
Turned off by the ON/OFF input
Figure F shows three turn-on scenarios, where a Startup Inhibit
Period is initiated at t0, t1, and t2:
Before time t0, when the input voltage is below the UVL threshold,
the unit is disabled by the Input Under-Voltage Lockout feature.
When the input voltage rises above the UVL threshold, the Input
Under-Voltage Lockout is released, and a Startup Inhibit Period is
initiated. At the end of this delay, the ON/OFF pin is evaluated,
and since it is active, the unit turns on.
At time t1, the unit is disabled by the ON/OFF pin, and it cannot
be enabled again until the Startup Inhibit Period has elapsed.
When the ON/OFF pin goes high after t2, the Startup Inhibit
Period has elapsed, and the output turns on within the typical
Turn-On Time.
L
C
Vin(+)
Vin(_)
Figure E: Internal Input Filter Diagram (values listed on page 3).
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
Figure F: Startup Inhibit Period (turn-on time not to scale)
Vout
Vin
200ms
(typical start-up
inhibit period)
t0
t1
t2
t
4ms (typical
turn on time)
ON
OFF
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| DQ65033QKA04PNS | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:Quarter-brick DC/DC Converter |
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| DQ65033QMA06NKS | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:Quarter-brick DC/DC Converter |
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