Texas Instruments TPS56121 Скачать руководство пользователя страница 24

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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 TPS56121

Страница 1: ...quipment Shutdown 12 9 Performance Data and Typical Characteristic Curves 13 9 1 Efficiency 13 9 2 Load Regulation 13 9 3 Line Regulation 14 9 4 Output Voltage Ripple 14 9 5 Switch Node 15 9 6 Load Transient 15 9 7 Start Up 16 9 8 Power Off 17 9 9 Over Current Protection 17 9 10 Control Loop Bode Plot 18 9 11 Thermal Image 18 10 EVM Assembly Drawings and PCB Layout 19 11 List of Materials 22 12 Re...

Страница 2: ...Image VIN 14 V VOUT 1 0 V IOUT 15 A without airflow 18 Figure 10 1 TPS56121EVM 601 Top Assembly Drawing top view 19 Figure 10 2 TPS56121EVM 601 Bottom Assembly Drawing bottom view 19 Figure 10 3 TPS56121EVM 601 Top Copper top view 20 Figure 10 4 TPS56121EVM 601 Internal 1 top view 20 Figure 10 5 TPS56121EVM 601 Internal 2 top view 21 Figure 10 6 TPS56121EVM 601 Bottom Copper top view 21 List of Ta...

Страница 3: ...TPS56121 High Current Synchronous Buck Converter with integrated MOSFETs The TPS56121 integrates TI s high performance controller technology with TI s industry leading MOSFET technology in a standard QFN package to meet the demands of modern high current and space constrained applications www ti com Introduction SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 Step Down Co...

Страница 4: ...ge FPGA or Micro Controller Core Supplies High Current Point of Load Modules Telecommunications Equipment Computer Peripherals 2 2 Features 8 V to 14 V Input Voltage Rating 1 0 V 2 Output Voltage Rating 15 A Steady State Load Current 500 kHz Switching Frequency Simple Access to Power Good Enable Soft Start and Error Amplifier Convenient Converter Performance Test Points Description www ti com 4 TP...

Страница 5: ... 0 1 02 V Line regulation VIN 8 V to 14 V IOUT 15 A 0 1 Load regulation VIN 12 V IOUT 0 A to 15 A 0 5 VRIPPLE Output voltage ripple VIN 12 V IOUT 15 A 20 mVPP IOUT Output current VIN 8 V to 14 V 0 15 A Systems Characteristics fSW Switching frequency 450 500 550 kHz ηpk Peak efficiency VIN 12 V IOUT 13 A 90 5 η Full load efficiency VIN 12 V IOUT 15 A 90 4 Operating temperature 25 C www ti com Elect...

Страница 6: ... 1 TPS56121EVM 601 Schematic Schematic www ti com 6 TPS56121 Step Down Converter Evaluation Module User s Guide SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 7: ... 1 0 µs division horizontal resolution 5 1 5 Fan The TPS56121EVM 601 Evaluation Module includes components that can get hot to touch when operating Because this evaluation module is not enclosed to allow probing of circuit nodes a small fan capable of 200 lfm to 400 lfm is recommended to reduce component temperatures when operating 5 2 Recommended Wire Gauge 5 2 1 VIN to J1 The connection between ...

Страница 8: ...e VIN it is advisable to limit the source current from VIN to 3 0 A maximum Make sure VIN is initially set to 0 V and connected as shown in Figure 5 1 3 Connect VIN to J1 as shown in Figure 5 1 4 Connect ammeter A1 between VIN and J1 as shown in Figure 5 1 5 Connect voltmeter V1 to TP1 and TP2 as shown in Figure 5 1 6 Connect voltmeter V2 to TP3 and TP4 as shown in Figure 5 1 7 Place the fan as sh...

Страница 9: ...pacitor and disables the TPS56121 converter Opening J3 enables the TPS56121 converter Default setting short to disable the converter www ti com Configurations SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 Step Down Converter Evaluation Module User s Guide 9 Copyright 2021 Texas Instruments Incorporated ...

Страница 10: ... technique in Section 8 2 7 3 Enable Soft start Monitoring TP5 TPS56121EVM 601 provides a test point for measuring the enable soft start voltage of the TPS56121 converter This test point can be monitored to observe the start up calibration waveform soft start ramp or fault time out timing The enable soft start test point should not be actively driven from an external circuit such as a logic output...

Страница 11: ...ecrease LOAD to 0 A 8 2 Output Ripple Voltage Measurement Procedure 1 Follow Section 8 1 to set VIN and LOAD to desired operating condition 2 Set oscilloscope for Output Voltage Ripple Measurement in Section 5 1 4 3 Connect oscilloscope probe with exposed metal barrel to TP3 and TP4 per Figure 8 1 Using a leaded ground connection may induce additional noise due to the large ground loop 4 Follow Se...

Страница 12: ...sformer 7 Sweep the frequency from 500 Hz to 500 kHz with 10 Hz or lower post filter 8 Control loop gain can be measured by ChannelB 20 log ChannelA æ ö ç è ø 9 Control loop phase can be measured by the phase difference between Channel A and Channel B 10 Follow Section Section 8 1 to power down T I EXAS NSTRUMENTS LOAD 1 0V 15A FAN V2 A1 DC source VIN V1 Network Analyzer Isolation Transformer CHA ...

Страница 13: ...ficiency 50 55 60 65 70 75 80 85 90 95 0 5 10 15 ILOAD Load Current A Efficiency VIN 8 V VIN 12 V VIN 14 V Figure 9 1 Efficiency 9 2 Load Regulation 0 98 0 985 0 99 0 995 1 1 005 1 01 1 015 1 02 0 5 10 15 ILOAD Load Current A V OUT Output Voltage V VIN 8 V VIN 12 V VIN 14 V Figure 9 2 Load Regulation www ti com Performance Data and Typical Characteristic Curves SLVU445C MARCH 2011 REVISED AUGUST 2...

Страница 14: ...N 8 V to 14 V VOUT 1 0 V IOUT 15 A 9 4 Output Voltage Ripple Figure 9 4 Output Voltage Ripple VIN 12 V VOUT 1 0 V IOUT 15 A Performance Data and Typical Characteristic Curves www ti com 14 TPS56121 Step Down Converter Evaluation Module User s Guide SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 15: ... IOUT 15 A 9 6 Load Transient Figure 9 6 Load Transient VIN 12 V VOUT 1 0 V IOUT 0 A to 15 A www ti com Performance Data and Typical Characteristic Curves SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 Step Down Converter Evaluation Module User s Guide 15 Copyright 2021 Texas Instruments Incorporated ...

Страница 16: ...Biased Start Up Waveform VIN 12 V VOUT 1 0 V IOUT 0 A Performance Data and Typical Characteristic Curves www ti com 16 TPS56121 Step Down Converter Evaluation Module User s Guide SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 17: ...rotection Waveform Ch1 VIN Ch2 EN SS Ch3 VOUT Ch4 IOUT 10 A div VIN 12 V VOUT 1 0 V IOUT 23 A www ti com Performance Data and Typical Characteristic Curves SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 Step Down Converter Evaluation Module User s Guide 17 Copyright 2021 Texas Instruments Incorporated ...

Страница 18: ...hermal Image Figure 9 12 Thermal Image VIN 14 V VOUT 1 0 V IOUT 15 A without airflow Performance Data and Typical Characteristic Curves www ti com 18 TPS56121 Step Down Converter Evaluation Module User s Guide SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 19: ...r to view probe and evaluate the TPS56121 high current converter with integrated FETs in a small form factor high current application T I EXAS NSTRUMENTS Figure 10 1 TPS56121EVM 601 Top Assembly Drawing top view Figure 10 2 TPS56121EVM 601 Bottom Assembly Drawing bottom view www ti com EVM Assembly Drawings and PCB Layout SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 St...

Страница 20: ...4 TPS56121EVM 601 Internal 1 top view EVM Assembly Drawings and PCB Layout www ti com 20 TPS56121 Step Down Converter Evaluation Module User s Guide SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 21: ... TPS56121EVM 601 Bottom Copper top view www ti com EVM Assembly Drawings and PCB Layout SLVU445C MARCH 2011 REVISED AUGUST 2021 Submit Document Feedback TPS56121 Step Down Converter Evaluation Module User s Guide 21 Copyright 2021 Texas Instruments Incorporated ...

Страница 22: ...or chip 1 16 W 1 7 87 kΩ 0603 Std Std 1 R4 Resistor chip 1 16 W 1 20 5 kΩ 0603 Std Std 1 R5 Resistor chip 1 16 W 1 49 9 Ω 0603 Std Std 1 R6 Resistor chip 1 16 W 1 1 00 kΩ 0603 Std Std 1 R7 Resistor chip 1 16 W 1 30 1 kΩ 0603 Std Std 1 R8 Resistor chip 1 16 W 1 0 kΩ 0603 Std Std 1 R9 Resistor chip 1 8 W 1 1 00 Ω 0805 Std Std 1 R10 Resistor chip 1 16 W 1 100 kΩ 0603 Std Std 3 TP1 TP3 TP11 Test point...

Страница 23: ...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...

Страница 24: ... 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...

Страница 25: ...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...

Страница 26: ... 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...

Страница 27: ...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...

Страница 28: ...s 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 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 wi...

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