User's Guide SLVU761A – October 2013 – Revised March 2014 TPS61230EVM-089 Evaluation Module This user’s guide describes the characteristics, operation, and use of TI's TPS61230 evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation and functionality of the TPS61230. The EVM converts a 2.3-V to 5.5-V input voltage to a regulated 5-V output voltage. The TPS61230 is capable of delivering 2.1-A current while the input voltage is above 3.3 V. This user’s guide includes setup instructions for the hardware, a printed-circuit board (PCB) layout for the EVM, a schematic diagram, a bill of materials (BOM), and test results for the EVM. 1 2 3 4 5 Contents Introduction ................................................................................................................... Setup .......................................................................................................................... TPS61230EVM-089 Test Results ......................................................................................... Board Layout ................................................................................................................. Schematic and Bill of Materials ............................................................................................ 1 2 3 4 6 List of Figures 1 Bode Plot for VIN = 3.3 V, VOUT = 5 V, IOUT = 2.1 A ....................................................................... 3 2 Assembly Layer .............................................................................................................. 4 3 Top Silk Layer ................................................................................................................ 4 4 Top Layer ..................................................................................................................... 5 5 Bottom Layer ................................................................................................................. 5 6 TPS61230EVM-089 Schematic ............................................................................................ 6 List of Tables 1 ..................................................................................... 1 Performance Specification Summary 2 TPS61230EVM-089 Bill of Materials ...................................................................................... 7 2 Introduction The TPS61230 is a 5-A switch current limit, synchronous, step-up converter in a 3 × 3-mm, 10-pin QFN package. The output voltage is adjustable. 1.1 Background The TPS61230EVM-089 is set to a 5-V output. The EVM operates with full-rated performance with an input voltage between 3.3 V and 5.5 V. If Vin is below 3.3 V, the output current capability could be less than 2.1 A. SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback TPS61230EVM-089 Evaluation Module Copyright © 2013–2014, Texas Instruments Incorporated 1 Introduction 1.2 www.ti.com Performance Specification Table 1 provides a summary of the TPS61230EVM-089 performance specifications. All specifications are given for an ambient temperature of 25°C. Table 1. Performance Specification Summary Specification Test Conditions Input voltage Output voltage PWM mode Min Typ Max Unit 2.3 3.6 5.5 V 4.9 5.0 5.1 V PFM mode 1.3 5.035 Output current VIN ≥ 3.3V UVLO rising voltage JP1 installed 3.0 V UVLO falling voltage JP1 installed 2.7 V 0 2100 mA Modifications Because the primary goal of the EVM is to demonstrate the small size of the TPS61230 power supply solution, capacitors and inductors with small footprints were chosen. These capacitors and inductors were carefully selected to maximize efficiency and minimize ripple, while minimizing overall solution size. Changing components could improve or degrade EVM performance. 1.3.1 Fixed Output Voltage Operation U1 can be replaced with the fixed output-voltage version of the IC for evaluation. For fixed-voltage version operation, replace R7 with 0-Ω resistor and remove R5. 1.3.2 Feedforward Capacitor for Better Load Transient C7 is provided as a feedforward capacitor for optimized load transient response, when needed. 2 Setup This section describes how to properly use the TPS61230EVM-089. 2.1 Input/Output Connector Descriptions J1 – VIN J2 – S+/S– J3 – GND J4 – VOUT J5 – S+/S– J6 – GND J7 – PG JP1 – UVLO JP2 – EN 2.2 Positive input connection from the input supply for the EVM Input voltage sense connections. Measure the input voltage at this point. Return connection from the input supply for the EVM Output voltage connection Output voltage sense connections. Measure the output voltage at this point. Output return connection. Power good connection for measurement Under voltage threshold and hysteresis program pin. Put the jumper across it to use a user defined value, pull off the jumper to use an internal value. EN pin input jumper. Place the jumper across ON and EN to turn on the IC. Place the jumper across OFF and EN to turn off the IC. Setup To operate the EVM, set jumpers JP1 and JP2 to the desired positions per Section 2.1. Connect the input supply to J1 and J3 and connect the load to J4 and J6. 2 TPS61230EVM-089 Evaluation Module SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated TPS61230EVM-089 Test Results www.ti.com 3 TPS61230EVM-089 Test Results The TPS61230EVM-089 was used to take the data in the TPS61230 datasheet. See the device data sheet for the performance of this EVM. 3.1 Loop Response Plot The loop response of the TPS61230EVM-089 can be measured by injecting the ac signal across R6. The loop response bode plot under typical condition is shown in Figure 1. Figure 1. Bode Plot for VIN = 3.3 V, VOUT = 5 V, IOUT = 2.1 A SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback TPS61230EVM-089 Evaluation Module Copyright © 2013–2014, Texas Instruments Incorporated 3 Board Layout 4 www.ti.com Board Layout Figure 2 through Figure 5 illustrate the TPS61230EVM-089 PCB layout. The gerbers are available on the EVM product page: TPS61230EVM-089. JP2 JP1 ON EN OFF TP1 TP3 TP2 SS A B C7 GND R1 R2 J2 S+ R6 R5 C2 C6 S- U1 C5 C1 J1 R7 VIN GND J6 SS+ J5 C4 C3 J3 R3 L1 VOUT J4 GND J6 SS+ J5 R4 TP4 2013 J7 PG GND Figure 2. Assembly Layer JP2 JP1 ON EN OFF TP1 TP3 TP2 SS A B C7 GND R1 R2 J2 S+ C5 C1 U1 1 + VIN R6 R5 C2 C6 S- J1 R7 C4 C3 J3 R3 L1 VOUT J4 R4 TP4 2013 J7 PG GND Figure 3. Top Silk Layer 4 TPS61230EVM-089 Evaluation Module SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Board Layout www.ti.com Figure 4. Top Layer Figure 5. Bottom Layer SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback TPS61230EVM-089 Evaluation Module Copyright © 2013–2014, Texas Instruments Incorporated 5 Schematic and Bill of Materials 5 www.ti.com Schematic and Bill of Materials This section provides the TPS61230EVM-089 schematic and BOM. 5.1 Schematic Figure 6 illustrates the EVM schematic. Figure 6. TPS61230EVM-089 Schematic 6 TPS61230EVM-089 Evaluation Module SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com 5.2 Bill of Materials Table 2. TPS61230EVM-089 Bill of Materials Qty RefDes Value Description Size Part Number MFR 1 C1 150uF Capacitor, Tantal,10V,20% 6032 (C) T520C157M010ATE055 KEMET 1 C2 10000pF Capacitor, Ceramic, X7R,50V,10% 0603 GRM188R71H103KA01D Murata 4 C3-C6 22uF Capacitor, Ceramic Chip, X5R,10V, 20% 0805 LMK212BBJ226MG YUDEN 1 L1 1uH Inductor, Power, 5.4 A, 20% 0.157 x 0.157 inch XFL4020-102ME Coilcraft 2 R1 R4 1M Resistor, Chip, 1/10W, 1% 0603 MCR03EZPFX1004 Rohm 1 R2 649k Resistor, Chip, 1/10W, 1% 0603 MCR03ERTF6493 Rohm 1 R3 75k Resistor, Chip, 1/10W, 1% 0603 MCR03ERTF7502 Rohm 1 R5 100k Resistor, Chip, 1/10W, 1% 0603 MCR03ERTF1003 Rohm 1 R6 49.9 Resistor, Chip, 1/10W, 1% 0603 MCR03EZPFX4992 Rohm 1 R7 402k Resistor, Chip, 1/10W, 1% 0603 MCR03EZPFX4023 Rohm IC, Synchronous Boost Converter with 5A Switch Current Limit 3 mm × 3 mm TPS61230DRC TI 1 U1 TPS61230 The TPS61230EVM-089 may be populated with TPS61230 (U1) devices that do not contain the correct top side markings on the top of the device itself. These devices are still fully-tested TPS61230 devices and meet the specified electrical characteristics of the data sheet. SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback TPS61230EVM-089 Evaluation Module Copyright © 2013–2014, Texas Instruments Incorporated 7 Revision History www.ti.com Revision History Changes from Original (October 2013) to A Revision .................................................................................................... Page • • Deleted Thermal Performance section. ................................................................................................ 3 Changed quantity column in C3-C6 row to 4. ......................................................................................... 7 NOTE: Page numbers for previous revisions may differ from page numbers in the current version. NOTE: Page numbers for previous revisions may differ from page numbers in the current version. 8 Revision History SLVU761A – October 2013 – Revised March 2014 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR EVALUATION MODULES Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following: 1. User agrees and acknowledges that EVMs are intended to be handled and used for feasibility evaluation only in laboratory and/or development environments. Notwithstanding the foregoing, in certain instances, TI makes certain EVMs available to users that do not handle and use EVMs solely for feasibility evaluation only in laboratory and/or development environments, but may use EVMs in a hobbyist environment. All EVMs made available to hobbyist users are FCC certified, as applicable. Hobbyist users acknowledge, agree, and shall comply with all applicable terms, conditions, warnings, and restrictions in this document and are subject to the disclaimer and indemnity provisions included in this document. 2. Unless otherwise indicated, EVMs are not finished products and not intended for consumer use. EVMs are intended solely for use by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems, and subsystems. 3. User agrees that EVMs shall not be used as, or incorporated into, all or any part of a finished product. 4. User agrees and acknowledges that certain EVMs may not be designed or manufactured by TI. 5. User must read the user's guide and all other documentation accompanying EVMs, including without limitation any warning or restriction notices, prior to handling and/or using EVMs. Such notices contain important safety information related to, for example, temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI. 6. User assumes all responsibility, obligation, and any corresponding liability for proper and safe handling and use of EVMs. 7. Should any EVM not meet the specifications indicated in the user’s guide or other documentation accompanying such EVM, the EVM may be returned to TI within 30 days from the date of delivery for a full refund. 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Any loads applied outside of the specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the applicable EVM user's guide prior to 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, some circuit components may have case temperatures greater than 60°C as long as the input and output are maintained at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using EVMs’ schematics located in the applicable EVM user's guide. When placing measurement probes near EVMs during normal operation, please be aware that EVMs may become very warm. 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If user intends to use EVMs in evaluations of safety critical applications (such as life support), and a failure of a TI product considered for purchase by user for use in user’s product would reasonably be expected to cause severe personal injury or death such as devices which are classified as FDA Class III or similar classification, then user must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold, or loaned to users may or may not be subject to radio frequency regulations in specific countries. 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U.S. Federal Communications Commission Compliance 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 could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices 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 its own expense. FCC Interference Statement for Class B EVM devices 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. Industry Canada Compliance (English) For EVMs Annotated as IC – INDUSTRY CANADA Compliant: This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Concerning EVMs Including Radio Transmitters This device complies with Industry Canada licence-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. 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. Canada Industry Canada Compliance (French) Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de l'utilisateur pour actionner l'équipement. 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. 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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, Use EVMs only after user obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or 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. 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