TPS84610EVM-003

Using the TPS84410EVM-001, TPS84210EVM-002, TPS84610EVM-003 User's Guide Literature Number: SLUU633A September 2011 – Revised February 2012 User's Guide SLUU633A – September 2011 – Revised February 2012 TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution 1 Introduction The TPS84410EVM-001, TPS84210EVM-002, TPS84610EVM-003 Evaluation Module (TPS84x10EVM-00x) is designed as an easy to use platform that facilitates an extensive evaluation of the features and performance of the Integrated Power Solution (IPS) devices. The EVM PCB may be configured with one of three IPS devices (see Table 1). Table 1. TPS84x10EVM-00x Device Configuration DEVICE TITLE TPS84210 6-V input, 2-A output sync. step-down converter with PWM TPS84410 6-V input, 4-A output sync. step-down converter with PWM TPS84610 6-V input, 6-A output sync. step-down converter with PWM This user guide provides information on the correct usage of the EVM and an explanation of the numerous test points on the board. 2 Description The EVM features a TPS84x10 synchronous buck IPS device configured for operation with typical 3.3-V and 5-V input bus applications. The output voltage can be set to one of five popular values by using a simple configuration jumper. In similar fashion, the switching frequency can be set to one of four values by use of a jumper. The full 4-A rated output current can be supplied by the EVM. A minimal amount of input and output capacitance is used on the board. Component pads are provided for additional input and output capacitors if desired. Monitoring test points are provided to allow measurement of efficiency, power dissipation, input ripple, output ripple, line and load regulation, and transient response. Control test points are provided for use of the PWRGD, Inhibit/UVLO, synchronization, and slow-start/tracking features of the IPS device. The EVM uses a recommended PCB layout that maximizes thermal performance and minimizes output ripple and noise. 2 TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Getting Started www.ti.com 3 Getting Started Figure 1 highlights the user interface items associated with the EVM. The polarized VIN Power terminal block is used for connection to the host input supply and the polarized VOUT Power terminal block is used for connection to the load. The terminal blocks can except up to 16 AWG wire. The VIN monitor and VOUT monitor test points located near the power terminal blocks are intended to be used as voltage monitoring points where voltmeters can be connected to measure VIN and VOUT. The voltmeter references should be connected to any of the four VIN/VOUT monitor grounds test points located between the power terminal blocks. Do not use these VIN and VOUT monitoring test points as the input supply or output load connection points. The PCB traces connecting to these test points are not designed to support high currents. Figure 1. TPS84x10EVM-00x User Interface SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution Copyright © 2011–2012, Texas Instruments Incorporated 3 Getting Started www.ti.com The VIN scope and VOUT scope test points can be used to monitor VIN and VOUT waveforms with an oscilloscope. These test points are intended for use with un-hooded scope probes. The scope probe tip should be connected to the socket labeled VIN or VOUT, and the scope ground barrel should lean against to the test point labeled GND. The GND TP may need to be cut or bent slightly to hold the probe barrel. Metal Ground Barrel Probe Tip TP15 TP16 Figure 2. Tip and Barrel Measurement The control test points located directly below the TPS84x10 IPS device are made available to test the features of the device. Any external connections made to these test points should be referenced to either of the two control ground test points located along the bottom of the EVM. Refer to Section 4 of this user guide for more information on the individual control test points. The VOUT-select and FSW-select configuration jumpers are provided for selecting the desired output voltage and appropriate switching frequency. Before applying power to the EVM, ensure that the jumpers are present and properly positioned for the intended output voltage. Refer to Table 2 for the recommended jumper settings. Always remove input power before changing the jumper settings. Once the jumper settings have been confirmed, configure the host input supply to apply the appropriate bus voltage listed in Table 2 and confirm that the selected output voltage is obtained. Table 2. Output Voltage and Switching Frequency Jumper Settings 4 VOUT SELECT TPS84210, FSW SELECT TPS84410, FSW SELECT TPS84610, FSW SELECT VIN BUS VOLTAGE 3.3 V 1.5 MHz 1 MHz - 5V 2.5 V 1.5 MHz 1 MHz - 5V 1.8 V 1 MHz 1 MHz - 5 V or 3.3 V 1.2 V 750 kHz 750 kHz - 5 V or 3.3 V 0.8 V 650 kHz 650 kHz - 5 V or 3.3 V TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Test Point Descriptions www.ti.com 4 Test Point Descriptions Fourteen wire-loop test points have been provided as convenient connection points for digital voltmeters (DVM) or oscilloscope probes to aid in the evaluation of the IPS device. A via labled PH is available near U1 to scope on the switching frequency. A description of each test point is listed in Table 3 Table 3. Test Point Descriptions TEST POINT VIN VOUT Output voltage monitor. Connect DVM to this point for measuring efficiency, line regulation, and load regulation. GND Input and output voltage monitor grounds (located between terminal blocks). Reference the above DVMs to any of these four ground points. VIN (scope) Input voltage scope monitor. Connect an oscilloscope to this set of points to measure input ripple voltage. VOUT (scope) PWRGD INH/UVLO Output voltage scope monitor. Connect an oscilloscope to this set of points to measure output ripple voltage and transient response. Monitors the power good signal of the IPS device. This is an open drain signal that requires an external pull-up resistor to VIN if monitoring is desired. A 10-kΩ to 100-kΩ pull-up resistor is recommended. PWRGD is high if the output voltage is within 92% to 106% of its nominal value. Connect this point to control ground to inhibit the IPS device. Allow this point to float to enable the device. Do not use a pull-up resistor. An external resistor can be connected from this point to control ground to increase the under-voltage lockout (UVLO) of the device. RT/CLK Connects to the RT/CLK pin of the IPS device. An external clock signal can be applied to this point to synchronize the device to an appropriate frequency. SS/TR Connects to the internal slow-start capacitor of the IPS device. An external capacitor can be connected from this point to control ground to increase the slow-start time of the device. This point can also be used as an input for tracking applications. GND 5 DESCRIPTION Input voltage monitor. Connect DVM to this point for measuring efficiency. Control grounds (located along bottom of EVM). Reference any signals associated with the control test points to either of these two ground points. Operation Notes The UVLO threshold of the factory-stock EVM is approximately 3.05 V with 0.3 V of hysteresis. The input voltage must be above the UVLO threshold in order to startup the IPS device. The UVLO threshold can be increased by adding a resistor to the INH/UVLO test point as described above. After startup, the minimum input voltage to the IPS device must be at least 2.95 V or (VOUT + 1.1 V), whichever is greater, in order to produce a regulated output. The maximum operating input voltage for the IPS device is 6 V. Refer to the TPS84410 datasheet for further information on the input voltage range and UVLO operation. After application of the proper input voltage, the output voltage of the IPS device will ramp to its final value in approximately 1 ms. If desired, this soft-start time can be increased by adding a capacitor to the SS/TR test point as described above. Refer to the TPS84410 datasheet for further information on adjusting the soft-start time. Table 1 lists the recommended switching frequencies for each of the VOUT selections. These recommendations cover operation over a wide range of input voltage and output load conditions. Several factors such as duty cycle, minimum on-time, minimum off-time, and current limit influence selection of the appropriate switching frequency. In some applications, other switching frequencies might be used for particular output voltages, depending on the above factors. Refer to the TPS84410 datasheet for further information on switching frequency selection, including synchronization. SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution Copyright © 2011–2012, Texas Instruments Incorporated 5 TPS84x10EVM-00x Schematic 6 www.ti.com TPS84x10EVM-00x Schematic Figure 3. TPS84x10EVM-00x Schematic 6 TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated PCB Layouts www.ti.com 7 PCB Layouts Figure 4. Top Layer Figure 5. Internal 1 Layer SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution Copyright © 2011–2012, Texas Instruments Incorporated 7 PCB Layouts www.ti.com Figure 6. Internal 2 Layer Figure 7. Bottom Layer 8 TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated PCB Layouts www.ti.com Figure 8. Top Assembly Figure 9. Bottom Layer SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution Copyright © 2011–2012, Texas Instruments Incorporated 9 List of Material 8 www.ti.com List of Material Table 4. TPS84x10EVM-00x List of Material (1) (2) (3) (4) (5) (1) (2) (3) (4) (5) 10 -003 -002 -001 REF DES DESCRIPTION Part Number MFR 1 1 1 C1 Capacitor, ceramic, 10 V, x5R, 10%, 47 µF, 1210 GRM32ER61A476K Murata 1 1 1 C2 Capacitor, ceramic, 6.3 V, x5R, 20%, 47 µF, 1210 GRM32ER60J476M Murata 1 0 1 1 C7 Capacitor, polymer, 10 V, 20%, 220 µF, D3L 10TPE220ML Sanyo 0 0 C8 Capacitor, polymer, 10 V, 20%, 220 µF, D3L 10TPE220ML Sanyo 1 1 1 C4 Capacitor, polymer, 6.3 V, 20%, 100 µF, B2 6TPE100MPB Sanyo 0 0 0 C3, C5, C6 Capacitor, ceramic, 0.1 µF, 1210 Std STD 0 0 0 10 Capacitor, ceramic, 0.01 µF, 0402 STD STD 2 2 2 J1-2 Header, male 2 x 5 pin, 100-mil spacing, 0.100 inch x 5 inch x 2 inch PEC05DAAN Sullins 1 1 1 R3 Resistor, chip, 1/16 W, 1%, 2.87 kΩ, 0603 STD STD 1 1 1 R4 Resistor, chip, 1/16 W, 1%, 1.15 kΩ, 0603 STD STD 1 1 1 R5 Resistor, chip, 1/16 W, 1%, 681 Ω, 0603 STD STD 1 1 1 R6 Resistor, chip, 1/16 W, 1%, 464 Ω, 0603 STD STD 1 1 1 R7 Resistor, chip, 1/16 W, 1%, 348 kΩ, 0603 STD STD 1 1 1 R8 Resistor, chip, 1/16 W, 1%, 715 kΩ, 0603 STD STD 1 1 1 R9 Resistor, chip, 1/16 W, 1%, 1.2 MΩ, 0603 STD STD 1 1 1 R10 Resistor, chip, 1/16 W, 5%, 0 Ω, 0603 STD STD 1 1 1 R13 Resistor, chip, 1/16 W, 1%, 174 kΩ, 0603 STD STD 1 1 1 R14 Resistor, chip, 1/16 W, 1%, 113 kΩ, 0603 STD STD 0 0 0 R1, R2, R11, R12 Resistor, chip, 1/16 W, 1%, 100 kΩ, 0402 Std Std These assemblies are ESD sensitive, ESD precautions shall be observed. These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable. These assemblies must comply with workmanship standards IPC-A-610 Class 2. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with equivalent MFG's component. Install label after final wash. Text shall be 8 pt font. Text shall be per Table 5. TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated List of Material www.ti.com Table 4. TPS84x10EVM-00x List of Material (1) (2) (3) (4) (5) (continued) -003 -002 -001 REF DES 2 2 2 TB1-2 DESCRIPTION Part Number MFR Terminal block, 2 pin, 15 A, 5.1 mm, 0.40 inch x 0.35 inch ED120/2DS OST 8 8 8 TP1, TP2 TP8 TP10- TP14 Test point, white, thru hole, 5012, 0.125 inch x 0.125 inch 5012 Keystone 6 6 6 TP3-7 TP9 Test point, black, thru hole, 5011, 0.125 inch x 0.125 inch 5011 Keystone 0 0 1 U1 6-V input, 4-A Output Sync. Step-Down Converter with PWM, QFN TPS84410RKG TI 0 1 0 U1 6-V input, 2-A Output Sync. Step-Down Converter with PWM, QFN TPS84210RKG TI 1 0 0 U1 6-V input, 6-A Output Sync. Step-Down Converter with PWM, QFN TPS84610RKG TI 1 1 1 PCB, 0.063 inch H x 1.9 inch L x 3.9 inch W PWR059 ANY 2 2 2 Conn jumper shorting gold flash SPC02SYAN Sullins 4 4 4 Bumpon hemisphere 0.44 inch x 0.20 inch clear, SJ-5303 0.440 inch Dia x 0.200 inch H 3M Table 5. Labeling ASSEMBLY NUMBER TExT PWR059-001 TPS84410EVM-001 PWR059-002 TPS84210EVM-002 PWR059-003 TPS84610EVM-003 SLUU633A – September 2011 – Revised February 2012 Submit Documentation Feedback TPS84410EVM-001/TPS84210EVM-002/TPS84610EVM-003, 2-A to 6-A Integrated Power Solution Copyright © 2011–2012, Texas Instruments Incorporated 11 Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives. Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI’s environmental and/or safety programs, please contact the TI application engineer or visit www.ti.com/esh. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. FCC Warning This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. EVM Warnings and Restrictions It is important to operate this EVM within the input voltage range of 3 V to 6 V and the output voltage range of 0.8 V to 3.6 V . Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM. Please consult the 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 40° C. The EVM is designed to operate properly with certain components above 80° C as long as the input and output ranges are maintained. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2012, Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI 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 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. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: 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 Mobile Processors www.ti.com/omap Wireless Connectivity www.ti.com/wirelessconnectivity TI E2E Community Home Page e2e.ti.com Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2012, Texas Instruments Incorporated