Texas Instruments HPA070 manual Dynamic Warnings and Restrictions

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DYNAMIC WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 0 VDC to 14 VDC.

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than 50°C. The EVM is designed to operate properly with certain components above 50°C as long as the input and output ranges are maintained. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified using the EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

Copyright 2004, Texas Instruments Incorporated

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Contents User’s Guide EVM Important Notice Dynamic Warnings and Restrictions Introduction FeaturesTPS40055EVM−001 HPA070 Schematic Schematic+ R2 + f 17.82 10 *6 * 23 k Component SelectionTPS40055 Device Selection Frequency of OperationUvlo Circuitry Inductance ValueInput capacitor selection Mosfet selection Output Capacitor SelectionShort Circuit Protection Snubber Component SelectionCompensation Components Oscilloscope Probe Test Jacks Test SetupDC Input Source Output LoadClosed Loop Performance Efficiency and Power LossPower Dissipation Load Test Results / Performance DataEVM Assembly Drawing and PCB Layout Output Ripple and Transient ResponseOutput Voltage Ripple Transient Response Top Side Copper Internal Layer 2 Copper TPS40055EVM−001 HP A070 List of Materials List of MaterialsReferences Products Applications Important Notice