Texas Instruments TPS22921 User Manual Download Page 9

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3.1

TPS22921/22/22B EVM Board

Chapter 3

SLVU286 – January 2009

Board Layout

This section contains three views of the TPS22921/22/22B EVM evaluation board as well as some layout
considerations.

Figure 3-1. TPS22921/22/22B EVM Component Placement

SLVU286 – January 2009

Board Layout

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Summary of Contents for TPS22921

Page 1: ...TPS22921 22 22B Load Switch EVM User s Guide Literature Number SLVU286 January 2009...

Page 2: ...2 SLVU286 January 2009 Submit Documentation Feedback...

Page 3: ...hematic 7 2 3 Bill of Materials 8 3 Board Layout 9 3 1 TPS22921 22 22B EVM Board 9 3 2 Layout Considerations 11 4 EVM Setup 13 4 1 Recommended Test Equipment 13 4 2 Calculating Voltage Drop and Load C...

Page 4: ...21 22 22B EVM Top Side Layout 10 3 3 TPS22921 22 22B EVM Bottom Side Layout 10 4 1 EVM Setup For Calculating Voltage Drop and Load Current 13 List of Tables 2 1 TPS22921 22 22B EVM Options 7 2 4 Bill...

Page 5: ...ides a continuous output current of up to 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...

Page 6: ...TPS22921 22 22B Load Switch Evaluation Module EVM 6 SLVU286 January 2009 Submit Documentation Feedback...

Page 7: ...C1 C2 C3 C4 1 2 J1 1 2 1 2 3 J2 VON V V V V R1 10 k J3 VOUT GND V V OUT OUT ON V V IN IN VIN Chapter 2 SLVU286 January 2009 Schematics and Bill of Materials Table 2 1 TPS22921 22 22B EVM Options QUIC...

Page 8: ...nal block 6A 125 V 3 5 mm OnShore 2 2 J1 J3 7 6 5 mm ED555 2DS pitch Technology ERJ 1 1 1 R1 10 k Resistor chip 1 8 W 5 805 STD 6GEYJ103V ERJ 1 1 1 R2 33 Resistor chip 1 8 W 5 805 STD 6GEYJ330V ERJ 1...

Page 9: ...ry 2009 Board Layout This section contains three views of the TPS22921 22 22B EVM evaluation board as well as some layout considerations Figure 3 1 TPS22921 22 22B EVM Component Placement SLVU286 Janu...

Page 10: ...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 10 SLVU286 January 2009 Submit Documentation Feedback...

Page 11: ...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 CIN and COUT bypass capacitors close to the VIN and V...

Page 12: ...Board Layout 12 SLVU286 January 2009 Submit Documentation Feedback...

Page 13: ...eter 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 The load switch is enabled into a passive on board l...

Page 14: ...EVM Setup 14 SLVU286 January 2009 Submit Documentation Feedback...

Page 15: ...ated Documentation from Texas Instruments TPS22921 TPS22922 TPS22922B Low Input Voltage Ultra Low rON Load Switches data sheet SLVS749 SLVU286 January 2009 Related Documentation from Texas Instruments...

Page 16: ...ct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer...

Page 17: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...