Texas Instruments TPS54326EVM-540 User Manual Download Page 16

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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 TPS54326EVM-540

Page 1: ...lation 6 Figure 2 4 TPS54326EVM 540 Load Transient Response 6 Figure 2 5 TPS54326EVM 540 Output Voltage Ripple 7 Figure 2 6 TPS54326EVM 540 Input Voltage Ripple 7 Figure 2 7 TPS54326EVM 540 Start Up 8 Figure 2 8 TPS54326 540 Switching Frequency 8 Figure 3 1 Top Assembly 9 Figure 3 2 Top Layer 10 Figure 3 3 Internal Layer 1 10 Figure 3 4 Internal Layer 2 11 Figure 3 5 Bottom Layer 11 Figure 3 6 Bot...

Page 2: ... at light loads The TPS54326 dc dc synchronous converter is designed to provide up to a 2A output from an input control voltage source of 4 5V to 18V input power voltage source of 2V to 18V and output voltage from 0 76V to 5 5V Rated input voltage output voltage and output current range for the evaluation module are given in Table 1 1 Table 1 1 Input Voltage and Output Current Summary EVM Input Vo...

Page 3: ... R1 value for some common output voltages For higher output voltages a feed forward capacitor is required Pads for this component C2 are provided on the printed circuit board C2 is used for faster load transient response and is recommended for auto skip mode stability Note that the values given in Table 1 3 are standard values and not the exact value calculated using Table 1 3 Table 1 3 Output Vol...

Page 4: ...convenient ground reference TP8 is used to monitor the output voltage with TP9 as the ground reference Table 2 1 Connection and Test Points Reference Designator Function J1 VIN see Table 1 1 for VIN range J2 VOUT 1 05 V at 3 A maximum JP1 EN control Connect EN to OFF to disable connect EN to ON to enable TP1 VIN test point at VIN connector TP2 GND test point at VIN TP3 EN test point TP4 VCC test p...

Page 5: ... Load Regulation The load regulation for the TPS54326EVM 540 is shown Figure 2 2 0 3 0 0 3 0 6 0 9 1 2 0 0 5 1 1 5 2 2 5 3 3 5 I Output Current A O Output Voltage Deviation V 5 V I V 12 V I Figure 2 2 TPS54326EVM 540 Load Regulation www ti com Test Setup and Results SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54326 Step Down Converter Evaluation Module User s Guide 5 Co...

Page 6: ...load transient is shown in Figure 2 4 The current step is from 0 75 A to 2 25 A 25 to 75 of rated load Total peak to peak output voltage variation is as shown V 50 mV div AC Coupled O I 1 A div 0 75 to 2 25 A Load Step O t Time 200 s div m Figure 2 4 TPS54326EVM 540 Load Transient Response Test Setup and Results www ti com 6 TPS54326 Step Down Converter Evaluation Module User s Guide SLVU353A NOVE...

Page 7: ... Input Voltage Ripple The TPS54326EVM 540 input voltage ripple is shown in Figure 2 6 The output current is the rated full load of 3A V 50 mV div AC Coupled I t Time 500 ns div Switching Node 5 V div Figure 2 6 TPS54326EVM 540 Input Voltage Ripple www ti com Test Setup and Results SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54326 Step Down Converter Evaluation Module Us...

Page 8: ...40 switching frequency is shown in Figure 2 8 500 600 700 800 900 0 5 10 15 20 V Input Voltage V I f Switching Frequency kHz sw V 1 8 V O V 3 3 V O I 1 A O Figure 2 8 TPS54326 540 Switching Frequency Test Setup and Results www ti com 8 TPS54326 Step Down Converter Evaluation Module User s Guide SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments In...

Page 9: ...hat connects VIN to VCC and R4 the power good pull up are located on the back side Analog ground and power ground are connected at a single point on the top layer near pin 5 of the TPS54326 The internal layer 1 is a split plane containing analog and power grounds The internal layer 2 is primarily power ground There are also a fill area of VIN and a trace routing VCC to the enable control jumper JP...

Page 10: ...ure 3 3 Internal Layer 1 Board Layout www ti com 10 TPS54326 Step Down Converter Evaluation Module User s Guide SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 11: ...2 Figure 3 5 Bottom Layer www ti com Board Layout SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54326 Step Down Converter Evaluation Module User s Guide 11 Copyright 2021 Texas Instruments Incorporated ...

Page 12: ...ttom Assembly Board Layout www ti com 12 TPS54326 Step Down Converter Evaluation Module User s Guide SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 13: ...hematic Figure 4 1 is the schematic for the TPS54326EVM 540 Figure 4 1 TPS54326EVM 540 Schematic Diagram www ti com Schematic Bill of Materials and Reference SLVU353A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54326 Step Down Converter Evaluation Module User s Guide 13 Copyright 2021 Texas Instruments Incorporated ...

Page 14: ...hip 1 16W 1 0603 Std Std R5 0 Open Resistor Chip 1 16W 1 0603 Std Std TP1 TP3 TP4 TP6 TP7 TP8 TP9 3 5000 Test Point Red Thru Hole Color Keyed 0 100 x 0 100 inch 5000 Keystone TP2 TP5 TP9 3 5001 Test Point Black Thru Hole Color Keyed 0 100 x 0 100 inch 5001 Keystone U1 1 TPS54326PWP IC 2 A Output Single Sync Step Down TPS54326PWP TI 1 Shunt 100 mil Black 0 100 929950 00 3M 1 PCB 2 76 In x 1 97 In x...

Page 15: ...other 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 techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Page 16: ... 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...

Page 17: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Page 18: ... 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 electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Page 19: ...OR 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 Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Page 20: ...o 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 these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you will fully indemn...

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