Texas Instruments TPS6420xEVM-023 User Manual Download Page 18 | Manualshive

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Layout

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Board Layout

Figure 3−3. Bottom Layer Routing

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Summary of Contents for TPS6420xEVM-023

Page 1: ...TPS6420xEVMĆ023 October 2003 PMP Portable Power User s Guide SLVU093 ...

Page 2: ...titute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of information in TI data books or data sheets is permissible only if reproduction ...

Page 3: ... handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR A...

Page 4: ...nty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 125 C The EVM is designed to operate properly with certain components above 125 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transistors pass transisto...

Page 5: ...ter 3 Board Layout Chapter 4 Bill of Materials and Schematic Related Documentation From Texas Instruments SLVS485 TPS6420x data sheet If you need Assistance Contact your local TI sales representative FCC Warning This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of ...

Page 6: ...Contents iv Trademark Powermite is a registered trademark of Microsemi Corporation ...

Page 7: ...v ...

Page 8: ...ations 1 2 2 EVM Operation 2 1 2 1 Input Output Connect 2 2 2 1 1 J1 Vin 2 2 2 1 2 J2 GND 2 2 2 1 3 JP1 Enable 2 2 2 1 4 J3 Vout 2 2 2 1 5 J4 GND 2 2 2 2 Test Setup 2 3 2 3 Test Results 2 3 3 Board Layout 3 1 3 1 Layout 3 2 4 Bill of Materials and Schematic 4 1 4 1 Bill of Materials 4 2 4 2 Schematic 4 3 ...

Page 9: ...64202 Efficiency 2 3 3 1 Top Assembly Layer 3 2 3 2 Top Layer Routing 3 2 3 3 Bottom Layer Routing 3 3 4 1 TPS6420xEVM Schematic 4 3 1 1 Device Summary 1 2 1 2 Performance Specification Summary 1 2 4 1 Bill of Materials 4 2 ...

Page 10: ... Introduction This chapter contains background information for the TPS6420xEVM 023 evaluation module Topic Page 1 1 Background 1 2 1 2 Performance Specification Summary 1 2 1 3 Modifications 1 2 Chapter 1 ...

Page 11: ...ed Device For Low Switching Frequency VI VO e g VI 5 V VO 1 5 V Minimum on time TPS64203 TPS64200 TPS64201 VI VO e g VI 3 8 V VO 3 3 V Minimum off time TPS64202 TPS64200 TPS64201 1 2 Performance Specification Summary Table 1 2 provides a summary of the TPS6420xEVM performance specifications All specifications are given for an ambient temperature of 25 C Table 1 2 Performance Specification Summary ...

Page 12: ...will work with low ESR ce ramic output capacitors if a large resistor is placed from the SW node to the FB node as explained on the last page of the datasheet application section Resistor R8 can be used as this large resistor since one side al ready connects to the SW node if the other side is manually connected to the FB node using a small wire Changing components can improve or degrade EVM perfo...

Page 13: ...2 1 EVM Operation This chapter describes how to properly test the TPS64202 using the TPS6420xEVM Topic Page 2 1 Input Output Connections 2 2 2 2 Test Setup 2 3 2 2 Test Results 2 3 Chapter 2 ...

Page 14: ...D This is the return connection to the input power supply 2 1 3 JP1 Enable This is the enable pin of the device The enable pin is pulled up to Vin by an onboard pullup resistor Placing a jumper across pins 2 3 of J1 shorts the enable pin to GND thereby enabling the device Placing a jumper across pins 1 2 of J1 connects the enable pin to Vin and disables the device 2 1 4 J3 Vout This is the positiv...

Page 15: ...rrent limit set to at least 1 3 times the expected maximum output current or for this EVM 2 6 A Short pins 2 3 on jumper JP1 labeled ON to enable the device Connect a load not to exceed 2 0 A to the output of the EVM 2 3 Test Results Below are the efficiency results using this EVM Figure 2 1 TPS64202 Efficiency 0 20 40 60 80 100 0 500 1000 1500 2000 2500 EFFICIENCY vs OUTPUT CURRENT VO 3 3 V IO Ou...

Page 16: ...3 1 Board Layout This chapter provides the TPS6420xEVM board layout and illustrations Topic Page 3 1 Layout 3 2 Chapter 3 ...

Page 17: ...ut for the HPA023 PWB The switching nodes with high frequency noise are isolated from the noise sensitive feedback circuitry and careful attention has been given to the routing of high frequency current loops Refer to the data sheet for more specific layout guidelines Figure 3 1 Top Assembly Layer Figure 3 2 Top Layer Routing ...

Page 18: ...Layout 3 3 Board Layout Figure 3 3 Bottom Layer Routing ...

Page 19: ...3 4 ...

Page 20: ...4 1 Bill of Materials and Schematic This chapter provides the TPS6420xEVM 023 bill of materials and schematic Topic Page 4 1 Bill of Materials 4 2 4 2 Schematic 4 3 Chapter 4 ...

Page 21: ...36 pin strip 0 100 x 2 Sullins PTC36SAAN 1 JP1 Header 3 pin 100 mil spacing 36 pin strip 0 100 x 3 Sullins PTC36SAAN 1 L1 Inductor SMT 5 µH 2 9 A 24 mΩ 0 264x0 264 Sumida CDRH6D38 5R0 1 Q1 MOSFET Pch 20 V 3 5 A 68 mΩ SOT23 Siliconix Si2323 1 R1 Resistor chip 619 kΩ 1 16 W 1 603 Std Std 1 R2 Resistor chip 356 kΩ 1 16 W 1 603 Std Std 1 R3 Resistor chip 0 033 Ω 1 4 W 1 1210 Std Std 1 R4 Resistor chip...

Page 22: ... kΩ 1 JP1 1 2 3 U1 TPS64202DBV EN GND FB 6 5 4 SW VIN ISENSE R6 0 Ω 0 Ω G 2 R7 R5 S D D1 MBRM120 R8 Q1 SI2323 L1 5 µH C7 3 3 R1 619 kΩ R2 365 kΩ C1 4 7 pF C2 47 µ F 1 C3 R3 0 033 Ω 1 2 1 2 J3 J4 VOUT GND 1 User Defined 2 Short R5 and R3 and Open R6 to Allow Current Sense Using Q1 s Rds On Optional Snubber Circuit Not Installed 3 GND ...

Page 23: ...4 4 ...

Page 24: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TPS64202EVM 023 ...

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