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Regulatory Notices:

3.1

United States

3.1.1

Notice applicable to EVMs not FCC-Approved:

FCC NOTICE:

This kit is designed to allow product developers to evaluate electronic components, circuitry, or software

associated with the kit to determine whether to incorporate such items in a finished product and software developers to write
software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

3.1.2

For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:

CAUTION

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.

FCC Interference Statement for Class A EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. 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 installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

3.2

Canada

3.2.1

For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

Summary of Contents for TPS54325

Page 1: ...S54325EVM Line Regulation 6 Figure 2 5 TPS54325EVM Load Transient Response 6 Figure 2 6 TPS54325EVM Output Voltage Ripple 7 Figure 2 7 TPS54325EVM Input Voltage Ripple 7 Figure 2 8 TPS54325EVM Start U...

Page 2: ...erty of their respective owners Trademarks www ti com 2 TPS54325 Step Down Converter Evaluation Module User s Guide SLVU300A JUNE 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texa...

Page 3: ...and an output voltage of 1 05 V unless otherwise noted The VIN and VCC input voltage pins are cnnected on the EVM using a 0 resistor R9 The ambient temperature is 25 C for all measurement unless other...

Page 4: ...t voltage ripple input voltage ripple start up and switching frequency 2 1 Test Setup Connect test equipment and TPS54325EVM board as shown in Figure 2 1 TPS54325EVM 001 Electronic Load1 Oscilloscope...

Page 5: ...2 5 V O V 1 8 V O Figure 2 2 TPS54325EVM Efficiency 2 4 Load Regualtion The load regulation for the TPS54325EVM is shown Figure 2 3 1 05 V OUTPUT VOLTAGE VS OUTPUT CURRENT 1 000 1 025 1 050 1 075 1 1...

Page 6: ...t Response The TPS54325EVM response to load transient is shown in Figure 2 5 The current step is from 0 A to 3 A of maximum rated load Total peak to peak voltage variation is as shown V 50 mV div O I...

Page 7: ...8 Input Voltage Ripple The TPS54325EVM input voltage ripple is shown in Figure 2 7 The output current is the rated full load of 3 A V 50 mV div IN SW 5 V div 400 ns div Figure 2 7 TPS54325EVM Input Vo...

Page 8: ...shown in Figure 2 9 V 1 8 V O V 3 3 V O f Switching Frequency kHz SW V Input Voltage V IN 900 800 700 600 500 0 5 10 15 20 SWITCHING FREQUENCY VS INPUT VOLTAGE Figure 2 9 TPS54325EVM Switching Freque...

Page 9: ...ion from switch SW1 to VCC The remainder of the second internal layer is power ground PGND area The bottom layer contans the remainder of the circuit interconnect traces and the signal ground plane GN...

Page 10: ...gure 3 3 Internal Layer 1 Board Layout www ti com 10 TPS54325 Step Down Converter Evaluation Module User s Guide SLVU300A JUNE 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas I...

Page 11: ...2 Figure 3 5 Bottom Layer www ti com Board Layout SLVU300A JUNE 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54325 Step Down Converter Evaluation Module User s Guide 11 Copyright 2021 Texas...

Page 12: ...y as Viewed from Back Side Board Layout www ti com 12 TPS54325 Step Down Converter Evaluation Module User s Guide SLVU300A JUNE 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas...

Page 13: ...matic Figure 4 1 is the schematic for the TPS54325EVM Figure 4 1 TPS54325EVM Schematic Diagram www ti com Schematic and Bill of Materials SLVU300A JUNE 2009 REVISED OCTOBER 2021 Submit Document Feedba...

Page 14: ...2 2 Terminal Block 2 pin 15 A 5 1mm 0 40 x 0 35 inch Phoenix Contact MKDSN1 5 2 5 08 L1 1 Inductor 1 5 H 10 0 A 10 67 m 6 5 x 7 1 mm TDK SPM6530T 1R5M R1 1 Resistor Chip 8 2 k 1 16 W 1 0603 STD STD R2...

Page 15: ...the current version Changes from Revision June 2009 to Revision A October 2021 Page Updated the numbering format for tables figures and cross references throughout the document 3 Updated the user s gu...

Page 16: ...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...

Page 17: ...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...

Page 18: ...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...

Page 19: ...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...

Page 20: ...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...

Page 21: ...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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