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Summary of Contents for Texas Instruments TPS22921
- Page 1 TPS22921/22/22B Load Switch EVM User's Guide Literature Number: SLVU286 January 2009...
- Page 2 SLVU286 – January 2009 Submit Documentation Feedback...
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Page 3: Table Of Contents
TPS22921/22/22B Load Switch Evaluation Module (EVM) Introduction Schematics and Bill of Materials EVM Options Schematic Bill of Materials Board Layout TPS22921/22/22B EVM Board Layout Considerations EVM Setup Recommended Test Equipment Calculating Voltage Drop and Load Current Related Documentation from Texas Instruments Important Notices SLVU286 –... -
Page 4: List Of Figures
TPS22921/22/22B EVM Component Placement TPS22921/22/22B EVM Top-Side Layout TPS22921/22/22B EVM Bottom-Side Layout EVM Setup For Calculating Voltage Drop and Load Current TPS22921/22/22B EVM Options Bill of Materials List of Figures List of Figures List of Tables www.ti.com SLVU286 – January 2009... -
Page 5: Tps22921/22/22B Load Switch Evaluation Module (Evm)
110 mA. Additional open resistor and capacitor footprints allow for the use of customer-selected input and output load values. The TPS22921/22/22B EVM accepts a YFP-6 packaged load switch for any of three (3) possible devices: TPS22921, TPS22922, or TPS22922B. These switches have a low threshold enable input, internally controlled slew rate, and ultra-low quiescent/shutdown current. - Page 6 TPS22921/22/22B Load Switch Evaluation Module (EVM) SLVU286 – January 2009 Submit Documentation Feedback...
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Page 7: Schematics And Bill Of Materials
V ON V – V IN C1 C2 C3 C4 SLVU286 – January 2009 Submit Documentation Feedback Schematics and Bill of Materials Table 2-1. TPS22921/22/22B EVM Options QUICK SLEW RATE OUTPUT DISCHARGE 30 s 30 s 200 s 10 k... -
Page 8: Bill Of Materials
C3, C4, – C7, C8 – J4, J5, J6 – J1, J3 – 10 k R4, R5 – TPS22921 TPS22922 TPS22922B – – – – Schematics and Bill of Materials Table 2.4. Bill of Materials DESCRIPTION Two-layer, 2420 2320 mil, PCB... -
Page 9: Board Layout
This section contains three views of the TPS22921/22/22B EVM evaluation board as well as some layout considerations. TPS22921/22/22B EVM Board Figure 3-1. TPS22921/22/22B EVM Component Placement SLVU286 – January 2009 Submit Documentation Feedback Chapter 3 SLVU286 – January 2009 Board Layout... -
Page 10: Tps22921/22/22B Evm Top-Side Layout
TPS22921/22/22B EVM Board www.ti.com Figure 3-2. TPS22921/22/22B EVM Top-Side Layout Figure 3-3. TPS22921/22/22B EVM Bottom-Side Layout Board Layout SLVU286 – January 2009 Submit Documentation Feedback... -
Page 11: Layout Considerations
www.ti.com Layout Considerations The V and V pins of U1 can carry significant current; so, traces to these pins should be of suitable length and width to minimize voltage drop to the load. Locate the C the V and V pins of U1. - Page 12 Board Layout SLVU286 – January 2009 Submit Documentation Feedback...
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Page 13: Evm Setup
Recommended Test Equipment The following test equipment is recommended: Two-channel storage oscilloscope Current probe Voltage probe 3.6 V at 2-A power supply Volt-ohm meter Calculating Voltage Drop and Load Current The user should read the applicable data sheet before using the EVM. Figure 4-1 shows the EVM test setup for measuring input and output voltage. - Page 14 EVM Setup SLVU286 – January 2009 Submit Documentation Feedback...
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Page 15: Related Documentation From Texas Instruments
Related Documentation from Texas Instruments TPS22921, TPS22922, TPS22922B, Low-Input Voltage, Ultra-Low r (SLVS749) SLVU286 – January 2009 Submit Documentation Feedback Chapter 5 SLVU286 – January 2009 Load Switches data sheet Related Documentation from Texas Instruments... -
Page 16: Evaluation Board/Kit Important Notice
EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. -
Page 17: Important Notice
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
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