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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

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSS standard(s). 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.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur

3.3

Japan

3.3.1

Notice for EVMs delivered in Japan:

Please see

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

日本国内に

輸入される評価用キット、ボードについては、次のところをご覧ください。

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

3.3.2

Notice for Users of EVMs Considered “Radio Frequency Products” in Japan:

EVMs entering Japan may not be certified

by TI as conforming to Technical Regulations of Radio Law of Japan.

If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of
Japan to follow the instructions below with respect to EVMs:

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 Radio Law of Japan with respect to
EVMs, or

3.

Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

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Содержание LP8754EVM

Страница 1: ...the LP8754EVM Evaluation Module User s Guide Literature Number SNVU369 August 2014 SmartReflex is a trademark of Texas Instruments Incorporated All other trademarks are the property of their respective owners ...

Страница 2: ...up 6 2 3 Notes on Efficiency Measurement Procedure 7 3 GUI Overview 7 3 1 Main Tab 7 3 2 Other Tabs and Menus 8 3 3 Console 9 4 Bill of Materials 10 5 Board Layout 11 6 LP8754 Schematic 14 2 Table of Contents SNVU369 August 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Страница 3: ...and inductors are connected together with large copper area 12 7 2nd Layer GND GND plane kept intact under the high current traces to provide shortest possible return path for high frequencies 12 8 3rd Layer VIN Plane kept intact around the LP8754 Below the LP8754 is small ground area connecting the microvias from 3rd to bottom layer and buried vias from 2nd to 3rd layer 12 9 Bottom Layer and Silk...

Страница 4: ...design documentation that includes schematics and parts list Figure 1 LP8754EVM The evaluation module consists of two PCB boards the LP8754 Evaluation Board and the USB Interface Board The boards are of the same size and the LP8754 board is stacked on top of the USB Interface Board 2 Quick Setup Guide Many of the components on the LP8754 are susceptible to damage by electrostatic discharge ESD Cus...

Страница 5: ...ard drive then unzip this folder Make sure the USB Interface Board is connected to the Evaluation Board and connect the USB Interface Board to the PC with the USB cable Refer to Figure 1 1 With the power supply disconnected from the unit under test UUT open the un zipped folder and click on lp8754_nnn exe nnn is the version number to start the software 2 On the Evaluation SW window bottom right co...

Страница 6: ...e terminal to VIN and negative terminal to GND on UUT X3 Power in terminal block Check that jumpers on the boards are set as shown in Figure 1 factory default jumper configuration Set power supply output ON and then continue with the following steps 1 On Evaluation software GUI click on Assert VIOSYS See Figure 3 Marking 1 2 Click on Assert NRST See Figure 3 Marking 2 3 Click on Read Registers but...

Страница 7: ... of J11 on the lower left corner of the EVB may also be removed see Section 6 3 GUI Overview The evaluation software has the following tabs Main Config and Advanced The three tabs together provide the user access to the whole register map of LP8754 3 1 Main Tab The Main tab has the elemental controls for the EVM and provides a view to the chip status Starting from top the main controls are Assert ...

Страница 8: ... register s If not checked the user can update the chip registers to correspond the configuration selected on the GUI by clicking Write Registers If Poll Status is selected the software sends a query to the LP8754 at a fixed interval in order to detect the status of the chip including operation mode multi phase status and output current If not selected user can read the registers by applying Read ...

Страница 9: ...called with no parameter treated as query and current selection is returned 0x address data I2 C read or write command or addr value address bits data examples 0x12 0xaa 0x12 7 1 0x12 3 0 15 The console supports use of scripts If a text file containing commands supported by the console is stored in the same folder with the evaluation software executable then the script can be launched from the con...

Страница 10: ...amtec Inc QTE 020 01 L D A 1 Header TH 100mil 2x2 Gold plated J7 Samtec Inc TSW 102 07 G D 1 230 mil above insulator Inductor Multilayer Ferrite 470nH 2 7A L0 L1 L2 L3 L4 L5 MuRata LQM21PNR47MGH 6 0 04 ohm SMD RES 0 01Ω 1 3W 2512 High Power R1 Bourns CRA2512 FZ R010ELF 1 Current Sense Chip Resistor R7 R8 R9 RES 1 8kΩ 5 0 1W 0603 Vishay Dale CRCW06031K80JNEA 3 R10 R11 R12 R13 R14 R15 RES 0 ohm 5 0 ...

Страница 11: ...and bottom layers Top layer contains the large copper area connecting the VOUT pads of the inductors and output capacitors together and to the load terminals 2nd layer is the ground plane and 3rd layer is the VIN plane Also the bottom layer contains large copper area filled with ground Input capacitors are placed as close to the LP8754 as possible for keeping the critical VIN and GND traces short ...

Страница 12: ... plane kept intact under the LP8754 and routed on top layer GND nets are the high current traces to provide shortest possible return connected to the GND plane 2nd layer with microvias path for high frequencies VIN nets are connected to the VIN plane 3rd layer with vias in pads of the input capacitors VOUT pads of the output capacitors and inductors are connected together with large copper area 12...

Страница 13: ...rea input capacitors C32 and C33 GND filling in bottom layer connecting the microvias from 3rd to bottom layer and for sinking heat through the GND vias buried vias from 2nd to 3rd layer Figure 10 3D View Showing the LP8754 and Nearest Components 13 SNVU369 August 2014 The LP8754 Evaluation Module Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Страница 14: ...LP8754 Schematic www ti com 6 LP8754 Schematic 14 The LP8754 Evaluation Module SNVU369 August 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Страница 15: ...ring the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warranted for the remainder of the original warranty period Replaced EVMs shall be warranted for a new full ninety 90 day warranty period 3 ...

Страница 16: ... 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 Concernant les EVMs avec antennes détachables Conformément à la rég...

Страница 17: ... connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the inputs and outputs kept within the specified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors cu...

Страница 18: ...F REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED 8 2 Specific Limitations IN NO EVENT SHALL T...

Страница 19: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

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