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參數(shù)資料
| 型號(hào)： | SMH4804 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | -48V Programmable Hot Swap Sequencing Power Controller |
| 中文描述： | - 48V的可編程序熱插拔電源控制器 |
| 文件頁數(shù)： | 1/41頁 |
| 文件大小： | 574K |
| 代理商： | SMH4804 |
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-48V Programmable Hot Swap Sequencing Power Controller
SUMMIT
Microelectronics, Inc. 2002 300 Orchard City Drive #131 Campbell CA 95006 Phone 408 378-6461 Fax 408 378-6596 www.summitmicro.com
2050 3.7 10/30/02
1
SMH4804
–
FEATURES AND APPLICATIONS
Features:
Soft Starts Main Power Supply on Card Insertion or
System Power Up
In-Rush Current Limiting
Master Enable to Allow System Control of Power Up or
Down
Programmable Independent Control of up to 4 DC/DC
Converters via 4 Power Good Signals, PG[4:1]#
Highly Programmable Circuit Breaker Level and Mode
– Programmable Quick-Trip Value, Current
Limiting, Duty Cycle Times, and Over-Current Filter
Programmable Host Voltage Fault Monitoring
– Programmable UV/OV Filter and UV Hysteresis
Programmable Fault Mode: Latched or Duty Cycle
Internal Shunt Regulator Allows for a Wide Supply
Range (typically -32 to -72 Volts)
I
2
C 2-Wire Serial Bus Interface for Programming,
Power On/Off and Operational Status
Applications
:
Telecom Hot-Swap Card
Distributed Power Architectures
Power-on LAN, IEEE 802.3
–
INTRODUCTION
The SMH4804 is a user-programmable -48V power supply
controller designed to control the hot-swapping of plug-in
cards and to sequence supplies in a distributed power
environment. The SMH4804 drives an external power
MOSFET switch that connects the bus side supply to the
card side load and controls in-rush current while providing
both current regulation and over-current protection. When
the source and drain voltages of the external MOSFET are
within specification, the SMH4804 asserts four PG[4:1]#
power-good logic outputs either simultaneously or
sequenced at programmable intervals to enable DC-DC
converters to distribute card side power.
Additional features of the device include: UV and OV
monitor, master enable or temperature sense input (EN/
TS), 2.5V and 5V reference outputs for expanding monitor
functions, two Pin-Detect enable inputs (PD1# and PD2#)
for card insertion verification, and duty-cycle or latched
over-current protection modes. All features are
programmed in nonvolatile registers through the I
2
C
interface which is simplified with the SMX3200 interface
adapter and Windows GUI software available from Summit
Microelectronics. Engineers can program the device
directly in-circuit with units of voltage, current and time,
allowing fast design cycles.
–
SIMPLIFIED APPLICATION DRAWING
Figure 1. SMH4804 Simplified Application Diagram
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PDF描述 |
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| SMH4812 | Distributed Power Hot-Swap Controller |
| SMH4812G | Distributed Power Hot-Swap Controller |
| SMH4812S | Distributed Power Hot-Swap Controller |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SMH4804F | 制造商:SUMMIT 功能描述: |
| SMH4811 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DISTRIBUTED POWER HOT SWAP CONTROLLER |
| SMH4811A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DISTRIBUTED POWER HOT SWAP CONTROLLER |
| SMH4811A_09 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Programmable Distributed Power Hot-Swap Controller for High-Availability Systems |
| SMH4811AG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DISTRIBUTED POWER HOT SWAP CONTROLLER |
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