Texas Instruments Simple -48V Hot Swap Controller EVM TPS2393EVM TPS2393EVM Datenbogen
Produktcode
TPS2393EVM
SLUU155 – March 2003
4
Full-Featured –48-V Hot Swap Power Manager
Full-Featured –48-V Hot Swap Power Manager
(TPS2392 and TPS2393)
Andy Ripanti
Power Interface Products
ABSTRACT
The TPS2392 and TPS2393 integrated circuits are hot swap power managers optimized for use in
nominal –48-V systems. They operate over a supply voltage range of –20 V to –80 V, and are rated
to withstand spikes to –100 V. In conjunction with an external N-channel FET and sense resistor, they
can be used to enable live insertion of plug-in cards and modules in powered systems. Each device
provides load current slew rate control and peak magnitude limiting. Undervoltage and overvoltage
shutdown thresholds are easily programmed via a three-resistor divider network.
nominal –48-V systems. They operate over a supply voltage range of –20 V to –80 V, and are rated
to withstand spikes to –100 V. In conjunction with an external N-channel FET and sense resistor, they
can be used to enable live insertion of plug-in cards and modules in powered systems. Each device
provides load current slew rate control and peak magnitude limiting. Undervoltage and overvoltage
shutdown thresholds are easily programmed via a three-resistor divider network.
Contents
1
Introduction
5
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1.1 Features
5
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1.2 Description
5
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2
The Full-Featured –48-V Hot Swap Controller EVM Kit
6
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2.1 The Full-Featured –48-V Hot Swap Controller EVM Main Board
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2.1.1
Module Description
6
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2.1.2
EVM Schematic Diagram and List of Materials
7
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2.2 The Full-Featured –48-V Hot Swap EVM Jumper Card
10
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2.2.1
Description
10
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2.2.2
Jumper Card Schematic Diagram
11
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2.3 Full-Featured –48-V Hot Swap EVM Operating Specifications
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3
Getting Started
12
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3.1 Equipment Requirements
12
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3.2 Verifying the EVM Operation
13
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3.2.1
Equipment Setup
13
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3.2.2
Functional Test
14
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4
Using the EVM Kit to Evaluate the TPS2392 and TPS2393
15
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4.1 Supply Connections and Test Points
15
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4.2 Load Capacitors
16
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4.3 Changing the Current Limit Threshold
16
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4.4 Changing the Inrush Slew Rate
17
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4.5 Fault Timing With the TPS2392/93
18
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4.6 Programming the UVLO and OVLO Thresholds and Hysteresis
18
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4.7 TPS2392/93 Powergood Output (PG)
19
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