Texas Instruments TPS22981EVM- Thunderbolt™ Host/Peripheral Power MUX Evaluation Module TPS22981EVM TPS22981EVM Scheda Tecnica
Codici prodotto
TPS22981EVM
User's Guide
SLVU817 – November 2012
TPS22981EVM
Contents
1
Introduction
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2
Setup
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2.1
Power Supply Inputs
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2.2
Jumper Settings
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2.3
Measuring Output Voltage
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2.4
Current Limit
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3
Board Layout
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4
Schematic
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List of Figures
1
Top Layer Assembly
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2
Top Layer Routing
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3
Bottom Layer Routing
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4
TPS22981EVM Schematic
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List of Tables
1
Device and Package Configurations
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2
Input Supply Configuration
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3
Digital Signal Jumpers
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4
TPS22981EVM Bill of Materials
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1
Introduction
The Texas Instruments TPS22981EVM evaluation module (EVM) helps designers evaluate the operation
and performance of the TPS22981: 3.3 V to 18 V Mux with over current limit. The TPS22981 is a current-
limited power mux providing a connection to a peripheral device from either a low voltage supply (3.15 V
up to 3.6 V) or a high voltage supply (4.5 V up to 18 V). The desired output is selected by digital control
signals. The high voltage (VHV) and low voltage (V3P3) switch current limits are set with external
resistances. Once the current limit is reached, the TPS22981 will control the switch to maintain the current
at this limit.
and performance of the TPS22981: 3.3 V to 18 V Mux with over current limit. The TPS22981 is a current-
limited power mux providing a connection to a peripheral device from either a low voltage supply (3.15 V
up to 3.6 V) or a high voltage supply (4.5 V up to 18 V). The desired output is selected by digital control
signals. The high voltage (VHV) and low voltage (V3P3) switch current limits are set with external
resistances. Once the current limit is reached, the TPS22981 will control the switch to maintain the current
at this limit.
The EVM contains one TPS22981 – 3.3 V to 18 V Mux with over current limit (See
Table 1. Device and Package Configurations
Converter
IC
Package
U1
TPS22981RGPR
RGP
2
Setup
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set
up and use the TPS22981EVM.
up and use the TPS22981EVM.
1
SLVU817 – November 2012
TPS22981EVM
Copyright © 2012, Texas Instruments Incorporated