Texas Instruments TPS61042EVM-226 User Manual Download Page 22 | Manualshive

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Texas Instruments TPS61042EVM-226 User Manual Download Page 22

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Summary of Contents for TPS61042EVM-226

Page 1: ...September 2002 PMP EVMs User s Guide TPS61042EVM 226 PCB 24...

Page 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

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 r...

Page 4: ...inty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is designed to operate p...

Page 5: ...oard Layout Chapter 4 Schematic and Bill of Materials Related Documentation From Texas Instruments TPS61042 data sheet SLVS439 If You Need Assistance Contact your local TI sales representative FCC War...

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Page 7: ...2 2 2 Analog Dimming With PWM Voltage 2 3 2 2 3 PWM Dimming Using CTRL 2 4 2 3 Setup 2 4 3 Board Layout 3 1 3 1 Layout 3 2 4 Schematic and Bill of Materials 4 1 4 1 Schematic 4 2 4 2 Bill of Material...

Page 8: ...Contents...

Page 9: ...This chapter contains background information for the TPS61042 and support documentation for the TPS61042EVM 226 evaluation module Topic Page 1 1 Background 1 2 Chapter 1...

Page 10: ...EDs It may also be modified to deliver a higher or lower output current to the LEDs Refer to the data sheet for more information on adjusting the rated output current The EVM includes a CTRL pin and a...

Page 11: ...This chapter describes how to properly connect set up and use the TPS61042EVM 226 Topic Page 2 1 Input Output Connections 2 2 2 2 EVM Operation 2 2 2 3 Setup 2 4 Chapter 2...

Page 12: ...device The TPS61042 has built in overvoltage protection to keep the EVM from being damaged under a no load condition This EVM is designed to accommodate several LED dimming techniques Because of this...

Page 13: ...e amount of allowable ripple on the converted analog signal The converted analog voltage is then injected into the FB pin of the TPS61042 as in the Analog Dimming with Analog Voltage method described...

Page 14: ...x is the maximum desired output current The reference designators correspond to the EVM schematic shown in Chapter 4 R1 V ref Io_max For an output current of 20 mA R1 12 5 2 3 Setup After the EVM has...

Page 15: ...This chapter provides the TPS61042EVM 226 board layout and illustrations Topic Page 3 1 Layout 3 2 Chapter 3...

Page 16: ...the TPS61042EVM 226 PWB The nodes with a high switching frequency are short and are isolated from the noise sensi tive feedback circuitry Careful attention has been given to the routing of high freque...

Page 17: ...Layout Figure 3 3 Bottom Layer Routing...

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Page 19: ...This chapter provides the TPS61042EVM 226 schematic and bill of materials Topic Page 4 1 Schematic 4 2 4 2 Bill of Materials 4 3 Chapter 4...

Page 20: ...Schematic 4 1 Schematic...

Page 21: ...D5 Diode LED white 30 mA 1210 Lumex SML LX2832UWC TR 3 J1 J2 J3 Header 2 pin 100 mil spacing 36 pin strip 0 100 x 2 Sullins PTC36SAAN 1 J4 Header 3 pin 100 mil spacing 36 pin strip 0 100 x 3 Sullins P...

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