Texas Instruments TPS650231EVM Скачать руководство пользователя страница 11 | Manualshive

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Texas Instruments TPS650231EVM Скачать руководство пользователя страница 11

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Schematic and Bill of Materials

5

Schematic and Bill of Materials

This section provides the TPS65023B/TPS650231EVM-664 schematic and bill of materials.

5.1

Schematic

Figure 6. TPS65023B/TPS650231EVM-664 Schematic

11

SLVU394 – October 2010

TPS65023B/TPS650231EVM

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Copyright © 2010, Texas Instruments Incorporated

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Содержание TPS650231EVM

Страница 1: ...fault LDO Output Voltages TPS650231 2 4 TPS65023B TPS650231EVM 664 Bill of Materials 12 1 Introduction The Texas Instruments TPS65023B TPS650231EVM is an integrated power management integrated circuit IC for applications that are powered with one Li ion or Li polymer cell and require multiple power rails The TPS65023B TPS650231 contains three highly efficient switching step down converters two LDO...

Страница 2: ...nverts it to a USB protocol and sends it to the PC 1 1 4 Software Texas Instruments provides software to assist the user in evaluating this EVM To install the software go to the Texas Instruments Web page and download the latest software version from the TPS65023B or TPS650231 product folder Once you have downloaded the software execute the setup file and follow the instructions given 1 2 Features...

Страница 3: ...D Output voltage from RTC circuit J7 Fault Outputs Four fault outputs are available on this connector PWRFAIL Fault occurs when input voltage is less than 3 V Pulled up to VRTC when safe low for fail INT Fault occurs when a fail is on an input or output voltage acts as a sum fail Pulled up to VIN when safe low for fail RESPWRON Low reset signal is controlled by SW1 144 ms Pulled up to VIN normally...

Страница 4: ...is ON JP6 DCDC3 ON OFF EN for DCDC3 converter default setting is ON JP7 LDO ON OFF EN for both LDO1 and LDO2 regulators default setting is ON JP8 DEFLDO1 Sets default voltage for LDO1 and LDO2 in combination with DEFLDO2 See Table 2 for TPS65023B and Table 3 for TPS650231 defaults LDO output voltages JP9 DEFLDO2 Sets default voltage for LDO1 and LDO2 in combination with DEFLDO1 See Table 2 for TPS...

Страница 5: ... external voltage scaling circuit is on the EVM and the output voltage of DCDC2 can be switched between two preset voltages This useful feature reduces the power consumption of an application processor in Low Power mode The voltage scaling circuit consists of JP2 Q1 R3 R6 and R24 The circuit uses a transistor Q1 to connect a resistor R24 in parallel to the lower resistor of the feedback network R6...

Страница 6: ...rations 4 1 Layout Board layout is critical for all switch mode power supplies Figure 1 through Figure 5 show the board layout for the TPS65023B TPS650231EVM 664 PCB The nodes with high switching frequencies and currents are short and are isolated from the noise sensitive feedback circuitry Careful attention has been given to the routing of high frequency current loops See the data sheet for speci...

Страница 7: ...www ti com Board Layout Figure 2 Top Layer Routing 7 SLVU394 October 2010 TPS65023B TPS650231EVM Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Страница 8: ...Board Layout www ti com Figure 3 Layer 2 Routing GND Plane 8 TPS65023B TPS650231EVM SLVU394 October 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Страница 9: ...www ti com Board Layout Figure 4 Layer 3 Routing Vin Plane 9 SLVU394 October 2010 TPS65023B TPS650231EVM Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Страница 10: ...Board Layout www ti com Figure 5 Bottom Layer Routing 10 TPS65023B TPS650231EVM SLVU394 October 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Страница 11: ...rials This section provides the TPS65023B TPS650231EVM 664 schematic and bill of materials 5 1 Schematic Figure 6 TPS65023B TPS650231EVM 664 Schematic 11 SLVU394 October 2010 TPS65023B TPS650231EVM Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Страница 12: ...17 R18 R21 0 1 R3 182k Resistor Chip 1 16W 1 0603 Std 0 1 R6 365k Resistor Chip 1 16W 1 0603 Std 6 6 R7 R11 R14 100k Resistor Chip 1 16W 1 0603 Std R22 1 1 R8 10 Resistor Chip 1 16W 1 0603 Std 1 1 R9 1 20M Resistor Chip 1 16W 1 0603 Std 1 1 R10 499k Resistor Chip 1 16W 1 0603 Std 2 2 R15 R16 4 75k Resistor Chip 1 16W 1 0603 Std 2 2 R19 R20 0 Resistor Chip 1 16W 5 0603 Std 1 0 U1 TPS65023BRSB IC Po...

Страница 13: ...uct 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 or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products or...

Страница 14: ...ch statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications o...

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