Texas Instruments TPS53125EVM-599 User's Manual
Contents
1. Decrease LOAD1 to 0 A Decrease LOAD2 to 0 A ON CAE a NS Equipment Shutdown Shut down the equipment in the following manner Shut down oscilloscope Shut down Vy Shut down LOAD1 Shut down LOAD2 Shut down FAN oP Oo ws TPS53125EVM 599 Test Data Figure 3 through Figure 10 present typical performance curves for the TPS53125EVM 599 Because actual performance data can be affected by measurement techniques and environmental variables these curves are presented for reference and may differ from actual field measurements Efficiency n Efficiency 2 3 hoan Load Current A Vin 8 V 22 V Non 1 05 V lour OA 4A Figure 3 TPS53125EVM 599 Efficiency vs Load Current TPS53125EVM 599 SLVU392 July 2010 Copyright 2010 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com TPS53125EVM 599 Test Data 100 90 80 70 60 50 n Efficiency 40 30 20 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 hoan Load Current A Vin 8 V 22 V Nous 1 80 V lour OA 4A Figure 4 TPS53125EVM 599 Efficiency vs Load Current 6 2 Line and Load Regulation 1 07 1 06 Vo Output Voltage V 1 05 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 hoan Load Current A Vin 8 V 22 V Mom 1 05 V Lo O A 4A Figure 5 TPS53125EVM 599 Output Volt2. 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 Tl 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 Tl 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 ot
3. Output Voltage vs Load Current ceecee cece cece eee e eee e eee e ee eeeeeaeeeneeeeeeeeenaees TPS53125EVM 599 Output Voltage vs Load Cument 2 00 cece cece ence eee ee eee ee eee e ee eeee eee eeeaeeeeeeenaees TPS53125EVM 599 Output Voltage Ripple and Switching Waveform sscceeceeeeeeeeeeeeeeeeeeeeeeeeeaeeee TPS53125EVM 599 Output Voltage Ripple eee eeeece eee eee eee eee eee ee eens eee eee seen eee eeeeeeeeeeeeeeeeeeeee TPS53125EVM 599 Switching Waveforms 0ceeceeee ence eee eee eee eee nese eee eens eee e eee e eens eneeeeeeeeenaeeee TPS53125EVM 599 Switching Waveforms ue TPS53125EVM 599 Component Placement Viewed From Top TPS53125EVM 599 Top Copper Viewed From Top TPS53125EVM 599 Bottom Copper Viewed From Boom TPS53125EVM 599 Internal 1 X Ray View From Top TPS53125EVM 599 Internal 2 X Ray View From Top D CAP2 is a trademark of Texas Instruments SLVU392 July 2010 TPS53125EVM 599 Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS Description www ti com List of Tables 1 TPS53125EVM 599 Electrical and Performance Specifications cceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenees 2 2 Test Point Wd e le 4 3 TPS58125EVM 599 Eloi Material sicccansnecensunay seau ee eege ed ANEN NENNEN ENER ANE AEN ENNEN ENN 15 1 Description The TPS53125EVM 599 evaluation board provides the user with a convenient way to evaluate the TPS53125 Dual Synchronous Step Down Controller in a reali
4. Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Test Setup 5 2 2 Test Setup Diagram Oscilloscope 1MQ AC 20mV div 20MHz On Sw2 v02 or Texas Instruments TPS53124EVM 599 HPA 599 Rey E2 12V to 1 8V 4A amp 1 05V 4A Dual Synchronous Buck Figure 2 TPS53125EVM 599 Recommended Test Setup 5 3 Start Up Shutdown Procedures Perform the start up and shutdown procedures in the following manner Increase Vu from O V to 12 Vdc Vary LOAD1 from 0 V 4 Adc Vary LOAD2 from 0 V 4 Adc Vary V from 8 Vdc to 22 Vdc Decrease Vn to 0 Vdc Decrease LOAD1 to 0 A gellt Ke SLVU392 July 2010 TPS53125EVM 599 7 Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS TPS53125EVM 599 Test Data www ti com 5 4 5 5 6 1 8 7 Decrease LOAD2 to 0A Output Ripple Voltage Measurement Procedure Perform the Output Ripple Voltage Measurement procedure in the following manner Increase V from 0 V to 12 Vdc Adjust LOAD1 to desired load between 0 Adc and 4 Adc Adjust LOAD2 to desired load between 0 Adc and 4 Adc Adjust Vn to desired load between 8 Vdc and 22 Vdc Connect oscilloscope probe to CN1 or CN2 shown in Figure 2 Measure Output Ripple Decrease Vn to 0 Vdc
5. components listed with a quantity of 0 are not populated on the PCB but are provided for reference Table 3 TPS53125EVM 599 Bill of Materials QTY RefDes Value Description Size Part Number MFR 0 C1 Capacitor Aluminum 25V 20 0 328 x 0 390 inch Std Std 0 C12 C19 Capacitor Ceramic 0603 Std Std C20 C21 0 C14 C7 Capacitor OS CON 6 3V 20 0 260 Sq inch Std Std 1 C15 4 7uF Capacitor Ceramic 10V X5R 20 0805 Std Std 1 C16 1uF Capacitor Ceramic 16V X5R 20 0805 Std Std 4 C9 C10 47uF Capacitor Ceramic 6 3V X5R 20 1206 Std Std C17 C18 4 Ra C3 C4 10uF Capacitor Ceramic 25V X5R 20 1210 Std Std 2 C22 C23 4700pF Capacitor Ceramic Low Inductance 0603 Std Std 16V X7R 20 2 C6 C11 0 1uF Capacitor Ceramic 50V X7R 10 0603 Std Std 0 C8 C13 330uF ER PXE 330 yF 4 0 V 15 mQ 7343 D APXE4ROARA331MF61G_ NIPPON CHEMI CON 2 CN1 CN2 131 5031 00 Adaptor 3 5 mm probe clip or 0 2 131 4244 00 Tektronix 131 5031 00 0 D1 D2 Diode Schottky 1 A 30 V SMA Std Std 3 J1 J2 J3 ED120 2DS Terminal Block 2 pin 15 A 5 1mm 0 40 x 0 35 inch ED120 2DS OST 2 L1 L2 3 3uH Inductor SMT 5 6A 29 7 mQ 0 256 x 0 280 inch SPM6530T 3R3M TDK 2 Q1 Q3 FDS8876 MOSFET N ch 30 V 10 2 A 14 mQ SO8 FDS8876 Fairchild 2 Q2 Q4 FDS8690 MOSFET N ch 30 V 11 4 A 11 4 mQ SO8 FDS8690 Fairchild 1 R1 1 82K Resistor Chip 1 16
6. 392 July 2010 Copyright 2010 Texas Instruments Incorporated INSTRUMENTS Connector and Test Point Descriptions www ti com 4 Connector and Test Point Descriptions 4 1 Enable Jumpers Switches SW1 and SW2 The TPS53125EVM 599 board includes independent enable switches for each of the two outputs When the switch is in the DIS position the channel is disabled and discharged per the TPS53125 s internal discharge characteristics To enable VOUT1 place SW1 in the EN position To enable VOUT2 place SW2 in the EN position 4 2 Test Point Descriptions Table 2 lists the test points their labels uses and where additional information is located Table 2 Test Point Description Test Point Label Use Section TP1 TEST1 Monitor Channel 1 Soft Start Voltage 4 2 4 TP2 TEST2 Monitor Channel 2 Soft Start Voltage 4 2 4 TP3 GND Ground for Input Voltage 4 2 1 TP4 GND Ground for Channel 1 Output Voltage 4 2 2 TP5 SW Monitor Switching Node for Channel 1 4 2 5 TP6 GND Ground for Channel 2 Output Voltage 4 2 3 TP7 VO2 Monitor Output Voltage for Channel 2 4 2 3 TP8 VO1 Monitor Output Voltage for Channel 1 4 2 2 TP9 VIN Monitor Input Voltage 4 2 1 TP10 VREG5 Monitor Output of VREG5 Regulator 4 2 6 TP11 swe Monitor Switching Node for Channel 2 4 2 5 CN1 VOUT1 Monitor Output Voltage for Channel 1 4 2 2 CN2 VOUT2 Monitor Output Voltage for Channel 2 4 2 3 4 2 1 Input Voltage Monitoring TPS and TP9 The TPS53125EVM 599 provides two test points for measuring the
7. 80 loure 4 A M 1 0ps 1 25GS s Chi 2 Gm 800ps pt Figure 8 TPS53125EVM 599 Output Voltage Ripple 6 4 Switch Node Tek Sample 708 Acgs 30 Jun 10 14 48 00 a T rr T RR RRE ARRRRRRARRRRW TPS53125E M 599 CH1 Switch Node TTT M Test condition 12 in 1 05 4A mr TT Buttons a LA keck tt LA G A LE Ch2 tVn 12 Vourn 1 05 lour 4A Ch1 TP5 SW1 5 0 20 0ns pt M 1 0ps SO OMS s A DG 5 6V Figure 9 TPS53125EVM 599 Switching Waveforms SLVU392 July 2010 TPS53125EVM 599 11 Copyright 2010 Texas Instruments Incorporated A TEXAS INSTRUMENTS TPS53125EVM 599 Assembly Drawings and Layout www ti com Tek Bun a Sample PED SSC acds o 30 E 10 14 46 30 Buttons TPSS3125EVM 599 4 Test condition 12Yin 1 84 44 CH1 Switch Node Fees D D H D D D D D D D E E D E O E N E E E a E D oe zm Bw Mines son 20 net A Ch2 5 64 Vn 12 Vourz 1 80 peak Ch1 TP11 SW2 Figure 10 TPS53125EVM 599 Switching Waveforms 7 TPS53125EVM 599 Assembly Drawings and Layout The following figures Figure 11 through Figure 15 show the design of the TPS53125EVM 599 printed circuit board The EVM has been designed using a 4 layer 2 oz copper clad circuit board 3 5 in 2 7 to allow the user to easily view probe and evaluate the TPS53125 control IC in a practical application Moving components to both sides of the PCB or using addition
8. I 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 exp
9. IA TEXAS INSTRUMENTS User s Guide SLVU392 July 2010 TPS53125EVM 599 The TPS53125EVM 599 Evaluation Module presents an easy to use reference design for a common dual output power supply using the TPS53125 controller in cost sensitive applications Also included are the schematic board layout and bill of materials N OD N OOA WD o 10 11 12 13 14 15 Contents Descriptio see eege E EEE EEEE E EEN EENS ee unions vada NENNEN 1 1 ele ee EE 1 2 EE eege ee asters TPS53125EVM 599 Electrical Performance Specifications WIP SSS725EVIME599 EE HIE Deet ege d VE eege ege Connector and Test Point Descriptions 4 1 Enable Jumpers Switches SW1 and SW2 ENEE ENEE 4 2 Test Point Descriptions AN Re WEE 5 1 Se tel E E 5 2 EQuipMme nt SGtup EE 5 3 Start Up Shutdown PrOCEQUPES ies gegie ege isesend E NEE EE a EEES ESES S 5 4 Output Ripple Voltage Measurement Procedure 5 5 EOUID EDERT TPS53125EVM 599 Mest KE 6 1 EMGIONCY EE 6 2 Line and Load Regulation e NEEN REENEN REENEN ENNEN RENE ENER REENEN EE NENNEN 6 3 Output Voltage Ripple and Switching Node Waveforms 6 4 WITCH Node erte de Geen TPS53125EVM 599 Assembly Drawings and Layout eceeeeeee eee ee cence eee eee eee e ee eeee eee eeeeeeeeeeeeaeeee iT PS53125EVM 599 Bill Of ENEE TPS538125EVMz599 Re TPS53125EVM 599 Recommended Test Setup EEN TPS53125EVM 599 Efficiency vs Load Current EEN TPS53125EVM 599 Efficiency vs Load Current EEN TPS53125EVM 599
10. W 1 0603 Std Std 2 R11 R12 10 Resistor Chip 1 16W 1 0603 Std Std 1 R13 430 Resistor Chip 1 16W 1 0603 Std Std 0 R2 R7 R9 Resistor Chip 1 16W 1 0603 Std Std 1 R3 3 32K Resistor Chip 1 16W 1 0603 Std Std 2 R4 R6 10 0K Resistor Chip 1 16W 1 0603 Std Std 1 R5 12 1K Resistor Chip 1 16W 1 0603 Std Std 2 R8 R10 5 62K Resistor Chip 1 16W 1 0603 Std Std 2 SW1 SW2 G12AP RO Switch ON ON Mini Toggle 0 28 x 0 18 G12AP RO Nikkai 4 TP1 TP2 5012 Test Point White Thru Hole 0 125 x 0 125 inch 5012 Keystone TP5 TP11 1 TP10 5013 Test Point Orange Thru Hole 0 125 x 0 125 inch 5013 Keystone 3 TP3 TP4 5011 Test Point Black Thru Hole 0 125 x 0 125 inch 5011 Keystone TP6 2 TP7 TP8 5014 Test Point Yellow Thru Hole 0 125 x 0 125 inch 5014 Keystone 1 TP9 5010 Test Point Red Thru Hole 0 125 x 0 125 inch 5010 Keystone 1 U1 TPS53125PW IC Dual Synchronous Step Down TSSOP TPS53125PW Tl Controller For Low Voltage Power Rails SLVU392 July 2010 TPS53125EVM 599 15 Copyright 2010 Texas Instruments Incorporated Evaluation Board Kit Important Notice Texas Instruments Tl 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 traini
11. age vs Load Current SLVU392 July 2010 TPS53125EVM 599 9 Copyright 2010 Texas Instruments Incorporated A TEXAS INSTRUMENTS TPS53125EVM 599 Test Data www ti com 1 86 1 855 1 85 gt o 1 845 D S gt 1 84 a 5 o 1 835 o gt 1 83 1 825 1 82 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 hoan Load Current A Vn 8 V 22 V Vout 1 80 V kee OA 4A Figure 6 TPS53125EVM 599 Output Voltage vs Load Current 6 3 Output Voltage Ripple and Switching Node Waveforms Tek Run Sample EX AER Speer eee Batons TPS53125EVM 599 Test condition 12 in 1 05444 Curs1 Pos E CH1 Output Ripple Curs2 Pos vi 20 0my Y2 20 0m AN 40 0m pt EE SEET BEE EES D Ch1 20 Dm Bw M 1 0ps 1 25654 B00ps pt A Chi 4 8m Vin 12 Vourt 1 05 lout 4A Figure 7 TPS53125EVM 599 Output Voltage Ripple and Switching Waveform 10 TPS53125EVM 599 SLVU392 July 2010 Copyright 2010 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Tek Run TTT Sample TPS53125EVM 599 Test Data 740 cgs TPS53125E M 599 CH1 Output Ripple FT TT RI 30 Jun 10 14 10 42 a mr a AE E rrr Buttons gt Test condition 12 in 1 84 44 Curs1 Pos 20 0m Curs2 Pos 20 0m Y1 20 0m Y2 20 0rm AN 40 0m riiil Keele pitiit pe BEE BEE EE Chi 20 0m Bw Vin 12 Noss 1
12. al internal layers can offer additional size reduction for space constrained systems Figure 11 TPS53125EVM 599 Component Placement Viewed From Top 12 TPS53125EVM 599 SLVU392 July 2010 Copyright 2010 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com TPS53125EVM 599 Assembly Drawings and Layout J TASS DEIF feral TORO BACA Texos Instruments TPS53125EVM 599 HPA 599 Rey B 12V to 1 8V 4A amp 1 05V 4A Dual Synchronous Buck Figure 13 TPS53125EVM 599 Bottom Copper Viewed From Bottom SLVU392 July 2010 TPS53125EVM 599 13 Copyright 2010 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS TPS53125EVM 599 Assembly Drawings and Layout www ti com Figure 14 TPS53125EVM 599 Internal 1 X Ray View From Top Figure 15 TPS53125EVM 599 i 2 X Ray View From Top 14 TP sa eEueeg SUMUS 2010 Copyright 2010 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com TPS53125EVM 599 Bill of Materials 8 TPS53125EVM 599 Bill of Materials The Table 3 contains the bill of materials for TPS53125EVM 599 The reference designators reference the schematic in Figure 1 and assembly locations in Figure 11 The
13. be very warm to the touch Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2010 Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries Tl 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 Tl 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 Tl 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 T
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15. eet 1 foot input 1 foot return Other Test Equipment Fan The TPS53125EVM 599 Evaluation Module includes components that can become hot to the touch Because this EVM is not enclosed to allow probing of circuit nodes a small fan capable of 200 400 Ifm is required to reduce component temperatures when operating Equipment Setup Figure 2 shows the basic test setup that is recommended to evaluate the TPS53125EVM 599 Note that although the return for J3 and J1 and JP2 are the same system ground the connections must remain separate as shown in Figure 2 Test Procedure 1 When working at an ESD workstation ensure that wrist straps bootstraps or mats are connected referencing the user to earth ground before power is applied to the EVM Electrostatic smock and safety glasses are also recommended Prior to connecting the dc input source Vn it is advisable to limit the source current from Vj to 3 Adc maximum Ensure that Vj is initially set to 0 V and connected as shown in Figure 2 Verify SW1 and SW2 are in the desired position Increase VIN from 0 V to 12 Vdc Vary VIN between 8 Vdc and 22 Vdc Vary LOAD1 between 0 A and 4 Adc Vary LOAD2 between 0 A and 4 Adc Adjust SW1 between EN and DIS 9 Adjust SW2 between EN and DIS 10 Set SW1 to DIS 11 Set SW2 to DIS 12 Decrease LOAD1 to 0 A 13 Decrease LOAD2 to 0 A 14 Decrease VIN to 0 V N o Am mt t TPS53125EVM 599 SLVU392 July 2010 Copyright 2010
16. ert an oscilloscope probe with exposed ground barrel into CN2 for all Output 2 ripple measurements 4 TPS53125EVM 599 SLVU392 July 2010 A TEXAS Copyright 2010 Texas Instruments Incorporated l TEXAS INSTRUMENTS www ti com Test Setup 4 2 4 Soft Start Voltage Monitoring TP1 TP2 and TP3 TPS53125EVM 599 provides two test points for measuring the soft start ramp voltages TP1 monitors the soft start ramp of Channel 1 TP2 monitors the soft start ramp of Channel 2 To use TP1 or TP2 connect an oscilloscope probe between TP1 or TP2 and TP3 4 2 5 Switching Node Monitoring TP3 TP5 and TP11 TPS53125EVM 599 provides two test points for measuring the switching node waveform voltages TP5 monitors the switching node of Channel 1 TP2 monitors the switching node of Channel 2 To use TP5 or TP11 connect an oscilloscope probe between TP5 or TP11 and TP3 4 2 6 5 V Regulator Output Monitoring TP3 and TP10 TPS53125EVM 599 provides a test point for measuring the output of the internal 5 V regulator TP10 monitors the output voltage of the internal 5 V regulator To use TP10 connect a voltmeter positive terminal to TP10 and negative terminal to TP3 5 Test Setup 5 1 Equipment The following equipment is recommended for testing the TPS53125EVM 599 evaluation board 5 1 1 Voltage Source The input voltage source Vyn must be a 0 V to 15 V variable dc source capable o
17. f supplying 3 Adc minimum 5 1 2 Meters A1 0 Adc to 4 Adc ammeter V1 VIN 0 V to 22 V voltmeter V2 VOUT1 0 V to 2 V voltmeter V3 VOUT2 0 V to 2 V voltmeter 5 1 3 Loads LOAD1 One output load is an electronic load set for constant current mode capable of 0 Adc to 4 Adc at 1 05 Vdc LOAD2 The other output load is an electronic load set for constant current mode capable of 0 Adc to 4 Adc at 1 8 Vdc 5 1 4 Oscilloscope and Probe The oscilloscope analog or digital must be set for ac coupled measurement with a 20 MHz bandwidth limiting Use 20 mV division vertical resolution 1 0 us division horizontal resolution for the Output Ripple Voltage Test Set cursors at 20 mV and 20 mV The oscilloscope probe must be a Tektronix P6138 or equivalent oscilloscope probe with exposed conductive ground barrels 5 1 5 Recommended Wire Gauge Vyn to J3 The connection between the source voltage Vyn and J1 of TPS53125EVM 599 can carry as much as 2 Adc The minimum recommended wire size is AWG 16 with the total length of wire less than 2 feet 1 foot input 1 foot return SLVU392 July 2010 TPS53125EVM 599 5 Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS Test Setup www ti com 5 2 5 2 1 6 J1 to LOAD1 and J2 to LOAD2 The connection between J1 and LOAD1 and J2 and LOAD2 of TPS53125EVM 599 can carry as much as 4 Adc each The minimum recommended wire size is AWG 14 with the total length of wire less than 2 f
18. gree 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 Amplifiers amplifier ti com Audio www ti com audio Data Converters dataconverter ti com Automotive www ti com automotive DLP Products www dp com Communications and www ti com communications Telecom DSP dsp ti com Computers and www ti com computers Peripherals Clocks and Timers www ti com clocks Consumer Electronics www ti com consumer apps Interface interface ti com Energy www ti com energy Logic logic ti com Industrial www ti com industrial Power Mgmt power ti com Medical www ti com medical Microcontrollers microcontroller ti com Security www ti com security RFID www ti rfid com Space Avionics amp www ti com space avionics defense Defense RF IF and ZigBee Solutions www ti com lprf Video and Imaging www ti com video Wireless www ti com wireless apps Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2010 Texas Instruments Incorporated
19. her 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 8 V to 22 V and the output voltage range of 0 8 V to 5 5 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 60 C The EVM is designed to operate properly with certain components above 60 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
20. ng 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
21. o 22 V 1 Load Regulation lur 0Ato0o4A 1 Mous o Output Voltage Ripple Vin 12 V Joss 4 A 30 mVpp loure Output Current 2 Vin 8 V to 22 V 0 4 A Systems Characteristics Fow Switching Frequency 200 350 400 kHz npk Peak Efficiency Vin 12 88 n Full Load Efficiency Vin 12 lout lour2 4 A 80 2 TPS53125EVM 599 SLVU392 July 2010 Copyright 2010 Texas Instruments Incorporated di TEXAS INSTRUMENTS TPS53125EVM 599 Schematic www ti com TPS53125EVM 599 Schematic 3 m og DE paiioysui on NZ MA T ANA ZMS LMS et RS e tt e6sesas Jet REECH H Wi Z ai t vO za Y Y Hne unze FL 118 gt gt T e 719 19 eu ku A zr EC rolio Hee ENS ve vd anz AML ES lidl ate Z S A an9 S19 919 ECH E LaL ZLNOA ir i 698Sd4 LY 8 4dQeZr7 220 ki AN Z Aral 0 gzeesa4 e A andy L aa ot ve EI azos morj na IP M aeol AUZI azgi LLAOA 14 K CH L i za VW gdl Eet une p7 ee g j cy ka ZU ei KSE 619 gzessai T 10 gu Y7 Tf eau YY anoh anor Cal of sof vd For Reference Only See Table x for Specific Values Figure 1 TPS53125EVM 599 Schematic 3 TPS53125EVM 599 SLVU
22. stic cost sensitive application Providing both a low core type 1 05 V and O type 1 8 V outputs at up to 4 A from a loosely regulated 12 V 8 V to 22 V source the TPS53125EVM 599 includes switches and test points to assist users in evaluating the performance of the TPS53125 controller in their applications 1 1 Applications e Digital television e Set top box e DSL and cable modems e Cost sensitive digital consumer products 1 2 Features e 8 V to 22 V input e 1 05 V and 1 8 V outputs e Upto 4A per channel output e 350 kHz pseudo fixed frequency D CAP2 mode control e Independent enable switches for power on power off testing 2 TPS53125EVM 599 Electrical Performance Specifications Table 1 TPS53125EVM 599 Electrical and Performance Specifications Parameter Notes and Conditions Min Typ Max Unit Input Characteristics Vin Input Voltage 8 12 22 V lin Input Current Vin 12 V lour 4 A Jos 4 A 12 15 A No Load Input Current Vin 12 V lour 0 A 20 35 mA Vin_uvLo Input UVLO lout 4 40 42 45 V Output Characteristics Vouti Output Voltage 1 Vin 12 V lour 2 A 1 03 1 05 1 07 V Line Regulation Vin 8 to 22 1 Load Regulation Loan OAtO4A 1 Voutt_rip Output Voltage Ripple Vn 12 V lour 4 A 201 mVpp louti Output Current 1 Vn 8 V to 22 V 0 4 A Mou Output Voltage 2 Vun 12 V lour 2A 1 78 1 80 1 82 V Line Regulation Vin 8 V t
23. voltage applied to the module This allows the user to measure the actual module voltage without losses from input cables and connectors Measure all input voltage measurements between TP9 and TP3 To use TP9 and TP3 connect a voltmeter positive terminal to TP9 and negative terminal to TP3 4 2 2 Channel 1 Output Voltage Monitoring TP4 and TP8 or CN1 TPS53125EVM 599 provides two test points for measuring the voltage generated at the VO1 Output by the module This allows the user to measure the actual output voltage without losses from output cables and connectors Measure all DC Output voltage between TP8 and TP4 To use TP8 and TP4 connect a voltmeter positive terminal to TP8 and negative terminal to TP4 TPS53125EVM 599 also provides a shielded oscilloscope jack to allow ac measurements of the output ripple Insert an oscilloscope probe with exposed ground barrel into CN1 for all Output 1 ripple measurements 4 2 3 Channel 2 Output Voltage Monitoring TP6 and TP7 or CN2 TPS53125EVM 599 provides two test points for measuring the voltage generated at the VO1 Output by the module This allows the user to measure the actual output voltage without losses from output cables and connectors Measure all dc output voltage measurements between TP7 and TP6 To use TP7 and TP6 connect a voltmeter positive terminal to TP7 and negative terminal to TP6 TPS53125EVM 599 also provides a shielded oscilloscope jack to allow ac measurements of the output ripple Ins
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