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参数资料
| 型号： | ATW2812D |
| 厂商： | International Rectifier |
| 英文描述： | ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS |
| 中文描述： | 先进的模拟混合，高度可靠的DC / DC转换器 |
| 文件页数： | 6/8页 |
| 文件大小： | 58K |
| 代理商： | ATW2812D |
6
www.irf.com
ATW28XXD Series
Connecting the inhibit input (Pin 8) 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 400μA of current. The open cir-
cuit voltage of the inhibit input is 11.5 ±1 VDC.
ATW28XXD Block Diagram
Application Information
Inhibit Function
EMI Filter
An optional external EMI filter (AFC461) is available that will
reduce the input ripple current to levels below the limits
imposed by MIL-STD-461B 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 sys-
tem is fail-safe; that is, the slaves will continue operating
should the master frequency be interrupted for any rea-
son. The layout must be such that the synchronization
output (pin 2) of the master device is connected to the
synchronization input (pin 2) of each slave device. It is
advisable to keep this run short to minimize the possibil-
ity of radiating the 250KHz switching frequency.
The appropriate parts must be ordered to utilize this fea-
ture. After selecting the converters required for the sys-
tem, 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
Whenever multiple DC/DC converters are utilized in a single
system, significant low frequency noise may be generated
due to the slight 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).
Advanced Analog offers an option, which allows synchroni-
zation of multiple AHE/ATW type converters, thus eliminat-
ing this type of noise.
ATW28xxD
ATW28xxS
AFC461
or
AFV461
ATW28xxD
or Other
Compatable
SLV
+ In
+ In
+ In
Case
Case
Case
Return
Return
Return
Return
Return
Return
Output
Output
Output
MSTR
SLV
+ In
Return
Output
Return
System
Bus
Output
Output
3
4
+Vout
Return
Pulse Width
Modulator
EMI
Filter
1
8
10
+Input
Enable
Input
Return
FB
Drive 1
Drive 2
2
Sync
Error Amp
& Reference
5
-Vout
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATW2812D/CH | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, CLASS H - Bulk |
| ATW2812D/CHMSTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:HYBRID-HIGH RELIABILITY DC/DC CONVERTERS |
| ATW2812D/CH-MSTR | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, CLASS H, MASTER - Tape and Reel |
| ATW2812D/CH-SLV | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, CLASS H, SLAVE - Bulk |
| ATW2812D/ES | 制造商:International Rectifier 功能描述:DC/DC CONVERTER, FLANGED, ENVIRONMENTAL SCREENING - Bulk |
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