Texas Instruments TPS54240EVM-VSON User Manual Download Page 21

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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 TPS54240EVM-VSON

Page 1: ...ON Output Voltage Ripple in DCM Mode at 200 mA ILOAD 9 8 TPS54240EVM VSON Output Voltage Ripple in Eco mode at 20 mA ILOAD 9 9 TPS54240EVM VSON Input Voltage Ripple in CCM mode at 2 5 A ILOAD 10 10 TP...

Page 2: ...Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module Trademarks Eco mode is a trademark of Texas Instruments All other trademarks are the...

Page 3: ...ps keep the junction temperature low at high output currents The compensation components are external to the integrated circuit IC and an external divider allows for an adjustable output voltage Addit...

Page 4: ...A 87 7 CCM DCM boundary VIN 12 V 0 4 A Eco mode threshold VIN 12 V 45 mA 2 Test Setup and Results This section describes how to properly connect set up and use the TPS54240EVM VSON evaluation module...

Page 5: ...TOR FUNCTION J1 VIN see Table 1 for VIN range J2 VOUT 3 3 V at 2 5 A maximum J3 Input and output GND TP1 VIN test point at VIN connector TP2 Output voltage test point at OUT connector TP5 Test point b...

Page 6: ...the load current increases towards full load Figure 2 shows the efficiency for the TPS54240EVM VSON at an ambient temperature of 25 C Figure 2 TPS54240EVM VSON Efficiency Figure 3 shows the efficiency...

Page 7: ...right 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module 2 3 Output Voltage Load Regulation The load regulation for the TPS54240EVM VSON is shown in Figure 4 Figure 4 TPS...

Page 8: ...ight 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module 2 4 Load Transients The TPS54240EVM VSON response to load transients is shown in Figure 5 The current step is from...

Page 9: ...54240EVM VSON output voltage ripple in CCM mode is shown in Figure 6 The ripple voltage is measured directly across the input capacitors When the output current is less than one half the peak to peak...

Page 10: ...e in CCM mode is shown in Figure 9 The output current is the rated full load of 2 5 A and VIN 12 V The ripple voltage is measured directly across the input capacitors The TPS54240EVM VSON input voltag...

Page 11: ...rising The input voltage is initially applied and when the input reaches the undervoltage lockout threshold the start up sequence begins and the output ramps up at the externally set rate toward the s...

Page 12: ...Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module 2 9 Loop Characteristics The TPS54240EVM VSON loop response characteristics are shown in Figure 15 Gain and phase plots are shown...

Page 13: ...ight 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module 3 Schematic and Bill of Materials This section presents the TPS54240EVM VSON schematic and bill of materials 3 1 S...

Page 14: ...0 Std Std 1 D1 40V Diode Schottky 40 V 3 A SMB SMB B340B 13 F Diodes Inc 3 J1 J2 J3 Standard Banana Jack Uninsulated 8 9mm Keystone575 8 575 8 Keystone 1 J4 Header 100mil 3x1 Gold TH Header 100mil 3x1...

Page 15: ...frequency and external clock synchronization The VSON package offers an exposed thermal pad which must be soldered to the copper landing on the PCB for optimal thermal performance The PCB consists of...

Page 16: ...NVU602 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module Figure 18 TPS54240EVM VSON Bottom Side Assembly Figure 19 TPS54...

Page 17: ...NVU602 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module Figure 20 TPS54240EVM VSON Mid Layer 1 Layout Figure 21 TPS5424...

Page 18: ...Instruments Incorporated TPS54240EVM VSON Regulator Evaluation Module Figure 22 TPS54240EVM VSON Bottom Side Layout 4 2 Estimated Circuit Area The estimated printed circuit board area for the compone...

Page 19: ...Note that VIN must be in a range so that the minimum on time is greater than 130 ns and the maximum duty cycle is less than 90 Higher duty cycles are possible but may result in uneven switching behavi...

Page 20: ...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 21: ...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 22: ...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 23: ...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 24: ...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 25: ...e resources are subject to 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 reprod...

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