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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.

Содержание TPS54290

Страница 1: ...re 4 2 Output Ripple Measurement Tip and Barrel Using TP3 and TP4 or TP18 and TP19 9 Figure 4 3 Control Loop Measurement Setup 9 Figure 5 1 TPS54291EVM 431 Efficiency vs Load Current 11 Figure 5 2 TPS...

Страница 2: ...he EVM can be modified to other output voltages by changing some of the components 1 2 Applications Non isolated point of load and voltage bus converters Consumer electronics LCD TV Computer periphera...

Страница 3: ...Min to Max 1 VOUT_ripple Output Voltage Ripple VIN Nom IOUT Max 50 mVpp IOUT1 Output Current 1 VIN Min to Max 0 2 5 A IOUT2 Output Current 2 VIN Min to Max 0 2 5 A IOCP1 Output Over Current Channel 1...

Страница 4: ...atic is for reference only See Table 7 1 for specific values Schematic www ti com 4 TPS54291 Step Down Converter Evaluation Module User s Guide SLVU356A JANUARY 2010 REVISED OCTOBER 2021 Submit Docume...

Страница 5: ...tion 3 3 7 TP15 GND Ground for VOUT2 Channel A Loop Monitoring Section 3 3 7 TP16 CHB VOUT2 Channel B for Loop Monitoring Section 3 3 7 TP17 GND Ground for VOUT2 Channel B Loop Monitoring Section 3 3...

Страница 6: ...ed noise from the switch node 3 3 7 Channel 2 Loop Analysis TP14 TP15 TP16 and TP17 The TPS54291EVM 431 contains a 51 series resistor R13 in the feedback loop to allow for matched impedance signal inj...

Страница 7: ...l Using a leaded ground connection can induce additional noise due to the large ground loop area 4 1 5 Recommended Wire Gauge VIN to J1 The connection between the source voltage VIN and J1 of HPA431 c...

Страница 8: ...1 as shown in Figure 4 1 4 Connect voltmeter V1 to TP1 and TP2 as shown in Figure 4 1 5 Connect LOAD1 to J2 as shown in Figure 4 1 Set LOAD1 to constant current mode to sink 0 Adc before VIN is applie...

Страница 9: ...5A V2 LOAD2 1 2V 2 5A V3 Figure 4 3 Control Loop Measurement Setup 4 3 Start Up Shutdown Procedure 1 Increase VIN from 0 Vdc to 12 Vdc 2 Vary LOAD1 from 0 Adc to 1 5 Adc 3 Vary LOAD2 from 0 Adc to 2...

Страница 10: ...to TP6 as shown in Figure 4 3 4 Connect ground lead of Channel A and Channel B to TP5 and TP7 as shown in Figure 4 3 5 Inject 30 mV or less signal across R1 through an isolation transformer 6 Sweep fr...

Страница 11: ...VIN 9 6 13 2V VOUT1 3 3V IOUT1 0 1 5A VOUT2 1 2V IOUT2 0 2 5A Figure 5 1 TPS54291EVM 431 Efficiency vs Load Current 5 2 Line and Load Regulation 1 188 1 194 1 2 1 206 1 212 V Output Voltage V O 3 25 3...

Страница 12: ...P9 SW1 Ch4 TP12 SW2 Figure 5 3 TPS54291EVM 431 Output Voltage Ripple TPS54291EVM 431 Typical Performance Data and Characteristic Curves www ti com 12 TPS54291 Step Down Converter Evaluation Module Use...

Страница 13: ...view probe and evaluate the TPS54291 control IC in a practical double sided application Moving components to both sides of the PCB or using additional internal layers can offer additional size reducti...

Страница 14: ...54291EVM 431 Bottom Copper X Ray View from Top EVM Assembly Drawings and Layout www ti com 14 TPS54291 Step Down Converter Evaluation Module User s Guide SLVU356A JANUARY 2010 REVISED OCTOBER 2021 Sub...

Страница 15: ...TPS54291EVM 431 Internal 2 X Ray View from Top www ti com EVM Assembly Drawings and Layout SLVU356A JANUARY 2010 REVISED OCTOBER 2021 Submit Document Feedback TPS54291 Step Down Converter Evaluation...

Страница 16: ...istor Chip 1 16W 1 0603 Std Std 2 R2 R11 10 Resistor Chip 1 16W 5 0603 Std Std 2 R3 R12 20 5 k Resistor Chip 1 16W 1 0603 Std Std 1 R4 6 49 k Resistor Chip 1 16W 1 0603 Std Std 2 R5 R9 0 Resistor Chip...

Страница 17: ...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 18: ...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 19: ...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 20: ...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 21: ...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 22: ...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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