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参数资料
| 型号： | ATW2805S/ES-MSTRPBF |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 9/10页 |
| 文件大小： | 152K |
| 代理商： | ATW2805S/ES-MSTRPBF |
8
www.irf.com
ATW28XXS Series
Connecting the inhibit input (Pin 2) to input common (Pin 10)
will cause the converter to shut down. It is recommended
that the inhibit pin be driven by an open collector device
capable of sinking at least 400A of current. The open
circuit voltage of the inhibit input is 11.5 ±1.0VDC.
Block Diagram
Application Information
Inhibit Function (Enable)
EMI Filter
An optional EMI filter (AFC461) will reduce the input ripple
current to levels below the limits imposed by MIL-STD-461
CEO3.
Device Synchronization
To take advantage of this capability, the system designer
must assign one of the converters as the master. Then,
by definition, the remaining converters become slaves
and will operate at the masters’ switching frequency.
The user should be aware that the synchronization
system is fail-safe; that is, the slaves will continue
operating should the master frequency be interrupted for
any reason. The layout must be such that the
synchronization output (pin 8) of the master device is
connected to the synchronization input (pin 8) of each
slave device. It is advisable to keep this run short to
minimize the possibility of radiating the 250KHz switching
frequency.
The appropriate parts must be ordered to utilize this
feature. After selecting the converters required for the
system, a ‘MSTR’ suffix is added for the master converter
part number and a ‘SLV’ suffix is added for slave part
number. See Part Number section.
Typical Synchronization Connection
Remote Sense (ATW2805S only)
Better than 0.1% line and load regulation (case temperature
constant) are typical when the remote sense leads are used.
If the remote sense leads are left unconnected, then the
output voltage (measured at pins 4 and 5) will rise to
approximately 5.4VDC. If the remote sense leads are shorted
together, the output voltage may rise above 10VDC
depending on load, possibly damaging both the converter
and load.
Whenever multiple DC/DC converters are utilized in a single
system, significant low frequency noise may be generated
due to the sight differences in the switching frequencies of
the converters (beat frequency noise). Because of the low
frequency nature of this noise (typically less than 10KHz), it
is difficult to filter out and may interfere with proper operation
of sensitive systems (communications, radar or telemetry).
International Rectifier offers an option, which provides
synchronization of multiple AHE/ATW type converters, thus
eliminating this type of noise.
ATW28xxD
ATW28xxS
AFC461
or
AFV461
ATW28xxD
or Other
Compatable
+ In
Case
Return
Output
MSTR
SLV
+ In
Return
Output
Return
System
Bus
Output
5
4
+Vout
Output
Return
Pulse Width
Modulator
EMI
Filter
1
2
10
+Input
Enable
Input
Return
Error
Amp &
Ref
-Sense
FB
Drive 1
Drive 2
8
Sync
6 +Sense
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATW2805S-MSTR | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, MINIMUM SCREENING, MASTER - Tape and Reel |
| ATW2805S-SLV | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, MINIMUM SCREENING, SLAVE - Bulk |
| ATW2806S | 制造商:International Rectifier 功能描述:MODULE DC-DC 1-OUT 6V 6A 30W 10-PIN (10+TAB) ATW - Bulk |
| ATW2807D | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, MINIMUM SCREENING - Bulk |
| ATW2812D | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, MINIMUM SCREENING - Bulk |
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