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4 Schematic and Bill of Materials

This section presents the TPS54331EVM-232 schematic and bill of materials.

4.1 Schematic

Figure 4-1

 is the schematic for the TPS54331EVM-232.

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Figure 4-1. TPS54331EVM-232 Schematic

Schematic and Bill of Materials

www.ti.com

12

TPS54331 Step-Down Converter Evaluation Module User's Guide

SLVU247A – JULY 2008 – REVISED OCTOBER 2021

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Содержание TPS54331

Страница 1: ...5 TPS54331 Transient Response 6 Figure 2 6 TPS54331 Loop Response 7 Figure 2 7 TPS54331 Output Ripple 7 Figure 2 8 TPS54331 Input Ripple 8 Figure 2 9 TPS54331 Start Up Relative to Vin 8 Figure 2 10 TP...

Страница 2: ...ge is 30 V for the TPS54331EVM 232 Table 1 1 Input Voltage and Output Current Summary EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE TPS54331EVM 232 VIN 7 V to 28 V 0 A to 3 A 1 2 Performance Specificat...

Страница 3: ...ion 1 R2 10 k 1 221 V V O 1 221 V 1 Table 1 3 lists the R6 values for some common output voltages Note that VIN must be in a range so that the minimum on time is greater than 150 ns and the maximum du...

Страница 4: ...ble 2 1 EVM Connectors and Test Points REFERENCE DESIGNATOR FUNCTION J1 VIN see Table 1 1 for VIN range J2 2 pin header for enable Connect EN to ground to disable open to enable J3 2 pin header for sl...

Страница 5: ...n the drain to source resistance of the MOSFETs 2 3 Output Voltage Load Regulation The load regulation for the TPS54331EVM 232 is shown in Figure 2 3 0 9985 0 999 0 9995 1 1 0005 1 001 1 0015 1 002 1...

Страница 6: ...e TPS54331EVM 232 response to load transients is shown in Figure 2 5 The current step is from 25 to 75 of maximum rated load Total peak to peak voltage variation is as shown including ripple and noise...

Страница 7: ...k 1M Gain dB Figure 2 6 TPS54331 Loop Response 2 7 Output Voltage Ripple The TPS54331EVM 232 output voltage ripple is shown in Figure 2 7 The output current is the rated full load of 3 A Voltage is me...

Страница 8: ...age is applied and the output is inhibited by using a jumper at J2 to tie EN to GND When the jumper is removed EN is released When the EN voltage reaches the enable threshold voltage of 1 25 V the sta...

Страница 9: ...5331 Start up Relative to Enable www ti com Test Setup and Results SLVU247A JULY 2008 REVISED OCTOBER 2021 Submit Document Feedback TPS54331 Step Down Converter Evaluation Module User s Guide 9 Copyri...

Страница 10: ...vias placed around the board including four vias directly under the TPS54331 device to provide a thermal path from the top side ground traces to the bottom side ground plane The input decoupling capa...

Страница 11: ...rom Top Side Figure 3 3 Top Side Assembly www ti com Board Layout SLVU247A JULY 2008 REVISED OCTOBER 2021 Submit Document Feedback TPS54331 Step Down Converter Evaluation Module User s Guide 11 Copyri...

Страница 12: ...hematic Figure 4 1 is the schematic for the TPS54331EVM 232 Figure 4 1 TPS54331EVM 232 Schematic Schematic and Bill of Materials www ti com 12 TPS54331 Step Down Converter Evaluation Module User s Gui...

Страница 13: ...Std Std 1 R2 68 1 k Resistor Chip 1 16W 1 0603 Std Std 1 R3 29 4 k Resistor Chip 1 16W 1 0603 Std Std 1 R4 0 Resistor Chip 1 16W 1 0603 Std Std 1 R5 10 2 k Resistor Chip 1 16W 1 0603 Std Std 1 R6 3 24...

Страница 14: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Страница 15: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Страница 16: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Страница 17: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Страница 18: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Страница 19: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

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