background image

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.

TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.

TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.

Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.

Buyer acknowledges and agrees that it is solely responsible 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 failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.

In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.

No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.

Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have

not

been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and

regulatory requirements in connection with such use.

TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.

Products

Applications

Audio

www.ti.com/audio

Automotive and Transportation

www.ti.com/automotive

Amplifiers

amplifier.ti.com

Communications and Telecom

www.ti.com/communications

Data Converters

dataconverter.ti.com

Computers and Peripherals

www.ti.com/computers

DLP® Products

www.dlp.com

Consumer Electronics

www.ti.com/consumer-apps

DSP

dsp.ti.com

Energy and Lighting

www.ti.com/energy

Clocks and Timers

www.ti.com/clocks

Industrial

www.ti.com/industrial

Interface

interface.ti.com

Medical

www.ti.com/medical

Logic

logic.ti.com

Security

www.ti.com/security

Power Mgmt

power.ti.com

Space, Avionics and Defense

www.ti.com/space-avionics-defense

Microcontrollers

microcontroller.ti.com

Video and Imaging

www.ti.com/video

RFID

www.ti-rfid.com

OMAP Applications Processors

www.ti.com/omap

TI E2E Community

e2e.ti.com

Wireless Connectivity

www.ti.com/wirelessconnectivity

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2015, Texas Instruments Incorporated

Summary of Contents for ATL431

Page 1: ...o create a replica of the internal reference voltage The EVM is configured with resistor options to set the cathode current resistor options to set the cathode voltage and load capacitor options to check stability A test point can be connected to an external power supply to provide power All of the ATL431 input and output pins are accessible for external connection via test points 1 1 ATL431EVM Fe...

Page 2: ... 2µF C11 Anode 1 2 3 4 5 6 7 8 9 10 11 12 P1 1 2 3 4 5 6 7 8 9 10 11 12 P3 1 2 3 4 5 6 7 8 9 10 11 12 P2 1 2 3 4 J2 1 2 3 4 5 6 7 8 9 10 J1 TP1 TP2 TP3 TP4 Load Cap Selection C L Ik Selection R SUP Gain Selection R ONE Gain R TWO Overview www ti com 1 2 Schematic The schematic for the ATL431EVM is illustrated in Figure 1 Figure 1 ATL431EVM Schematic 2 ATL431 Adjustable Shunt Regulator EVM SLVUAE7 ...

Page 3: ...CB The PCB layout for the ATL431EVM is illustrated in Figure 2 Figure 2 ATL431EVM PCB Layout 3 SLVUAE7 April 2015 ATL431 Adjustable Shunt Regulator EVM Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 4: ...ng the ATL431EVM package ensure that the following is included 1 pc ATL431EVM board using one ATL431 2 3 Power Supply Setup and Functional Test A 40 V power supply capable of 100 mA of current is required Connect the positive power supply lead to the VCC on TP1 Connect the negative power supply lead to anode on TP4 Place a jumper on the 10k option of the Ik Selection section and set VCC to 5 V Ena...

Page 5: ...for operation The ATL431 needs 35 µA in order to operate in the proper gain region for accurate regulation Use Equation 1 to determine the cathode current 1 As shown in Figure 2 this portion is in the top left hand corner and is indicated as Ik Selection on the PCB Each jumper is denoted with its respective resistor value When setting IKA with R1 R5 be sure to not exceed the absolute maximum ratin...

Page 6: ...to measure this by setting the load capacitance CL As shown in Figure 2 this portion is on the right side of the PCB and is indicated as Load Cap Selection Each jumper is denoted with its respective capacitance value These capacitors are all ceramic and have very low ESR 4 Test Modes The ATL431EVM can be configured to measure practically every parameter shown in the typical characteristics of the ...

Page 7: ...IK www ti com Test Modes Figure 8 Test Circuit for Reference Impedance ZKA Figure 9 Test Circuit for Stability Boundary Conditions Figure 10 Test Circuit for Pulse Response 7 SLVUAE7 April 2015 ATL431 Adjustable Shunt Regulator EVM Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 8: ...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 ...

Page 9: ... 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...

Page 10: ... 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...

Page 11: ...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...

Page 12: ...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...

Reviews: