TPS51219EVM-630

www.ti.com Table of Contents User’s Guide TPS51219 Buck Controller Evaluation Module User's Guide ABSTRACT The TPS51219EVM evaluation module (EVM) uses the TPS51219. The TPS51219 is a small-size, single buck controller with adaptive on-time D-CAP2™ providing 1.05-V output at up to 20 A from input voltage ranging 8 V to 20 V. Table of Contents 1 Description.............................................................................................................................................................................. 3 1.1 Typical Applications............................................................................................................................................................3 1.2 Features............................................................................................................................................................................. 3 2 Electrical Performance Specifications................................................................................................................................. 3 3 Schematic................................................................................................................................................................................4 4 Test Setup................................................................................................................................................................................6 4.1 Test Equipment.................................................................................................................................................................. 6 4.2 Recommended Test Setup.................................................................................................................................................7 5 Test Procedure........................................................................................................................................................................ 8 5.1 Line/Load Regulation and Efficiency Measurement Procedure......................................................................................... 8 5.2 List of Test Points............................................................................................................................................................... 8 5.3 Equipment Shutdown......................................................................................................................................................... 8 6 Performance Data and Typical Characteristic Curves........................................................................................................ 9 6.1 Efficiency............................................................................................................................................................................9 6.2 Load Regulation................................................................................................................................................................. 9 6.3 Line Regulation................................................................................................................................................................ 10 6.4 Load Transient................................................................................................................................................................. 10 6.5 Output Ripple....................................................................................................................................................................11 6.6 Switch Node Voltage........................................................................................................................................................ 11 6.7 Turn-On/Turn-Off Waveform.............................................................................................................................................12 6.8 Output 0.5-V Prebias Turnon Waveform.......................................................................................................................... 12 7 EVM Assembly Drawing and PCB Layout.......................................................................................................................... 13 8 Bill of Materials..................................................................................................................................................................... 16 9 Revision History................................................................................................................................................................... 17 List of Figures Figure 3-1. TPS51219EVM-630 Schematic, Sheet 1 of 2........................................................................................................... 4 Figure 3-2. TPS51219EVM-630 Schematic, Sheet 2 of 2........................................................................................................... 5 Figure 4-1. Tip and Barrel Measurement for Switch Node Voltage..............................................................................................6 Figure 4-2. TPS51219EVM-630 Recommended Test Setup....................................................................................................... 7 Figure 6-1. TPS51219EVM-630 Efficiency.................................................................................................................................. 9 Figure 6-2. TPS51219EVM-630 Load Regulation....................................................................................................................... 9 Figure 6-3. TPS51219EVM-630 Line Regulation...................................................................................................................... 10 Figure 6-4. TPS51219EVM-630 Load Transient (VOUT = 1.05 V)..............................................................................................10 Figure 6-5. Output Ripple...........................................................................................................................................................11 Figure 6-6. Switching Node Waveform...................................................................................................................................... 11 Figure 6-7. Enable Turn-On....................................................................................................................................................... 12 Figure 6-8. Enable Turn-Off....................................................................................................................................................... 12 Figure 6-9. Output 0.5-V Prebias Turnon Waveform................................................................................................................. 12 Figure 7-1. TPS51219EVM-630 Top Layer Assembly Drawing (Top View)............................................................................... 13 Figure 7-2. TPS51219EVM-630 Bottom Layer Assembly Drawing (Bottom View)....................................................................13 Figure 7-3. TPS51219EVM-630 Top Copper Layer (Top View)................................................................................................. 14 SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 1 Trademarks www.ti.com Figure 7-4. TPS51219EVM-630 Internal Layer 1 (Top View).....................................................................................................14 Figure 7-5. TPS51219EVM-630 Internal Layer 2 (Top View).....................................................................................................15 Figure 7-6. TPS51219EVM-630 Bottom Copper Layer (Top View)........................................................................................... 15 List of Tables Table 2-1. TPS51219EVM-630-001 Electrical Performance Specifications................................................................................ 3 Table 5-1. Functions of Each Test Point...................................................................................................................................... 8 Table 8-1. EVM Components List According to Schematic Shown in Figure 1......................................................................... 16 Trademarks D-CAP2™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 2 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Description 1 Description The TPS51219EVM evaluation module (EVM) is designed to use a regulated voltage ranging 8 V to 20 V to produce 1.05-V output at up to 20 A of load current. The TPS51219EVM demonstrates the TPS51219 in a typical low-voltage application with D-CAP2™ mode operation. The EVM also provides test points to evaluate the performance of the TPS51219. 1.1 Typical Applications • • • Notebook computers I/O supplies System power supplies 1.2 Features The TPS51219EVM features: • • • • • • • D-CAP2™-mode operation with low-ESR output capacitance 2% tolerance 1.05-V output voltage 20-Adc, steady-state output current Support prebias output voltage start-up 500-kHz switching frequency SW1 for enable function Convenient test points for probing critical waveforms 2 Electrical Performance Specifications Table 2-1. TPS51219EVM-630-001 Electrical Performance Specifications Parameter Test Conditions Min Typ Max 8 12 20 Unit Input Characteristics Voltage range VIN voltage V Maximum input current VIN = 8 V, IOUT = 20 A No load input current VIN = 8 V, IOUT = 0 A Voltage range V5IN voltage Maximum input current V5IN = 5 V, VIN = 12 V, IOUT = 20 A 20 mA No load input current V5IN = 5 V, VIN = 12 V, IOUT = 0 A 0.5 mA 1.05 V 20 A 3 A 0.2 4.5 5 mA 5.5 V Output Characteristics Output voltage, VOUT VIN = 12 V, IOUT = 10 A Output load current, IOUT Line regulation: VIN = 8 V to 20 V, VOUT = 1.05 V, IOUT = 20 A 0.2% Output voltage regulation Load regulation: VIN = 12 V, VOUT = 1.05 V, IOUT = 1 mA to 20 A 0.2% Output voltage ripple At VIN = 12 V, VOUT = 1.05 V, IOUT = 20 A Output over current 15 mVpp 27 A 500 kHz System Characteristics Switching frequency VIN = 8 V, VOUT = 1.05 V, IOUT = 10 A Peak efficiency VIN = 12 V, VOUT = 1.05 V 89.3% Full load efficiency VIN = 12 V, VOUT = 1.05 V, IOUT = 20 A 85.4% Operating temperature 25 SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated °C 3 Schematic www.ti.com 3 Schematic Figure 3-1. TPS51219EVM-630 Schematic, Sheet 1 of 2 4 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Schematic Figure 3-2. TPS51219EVM-630 Schematic, Sheet 2 of 2 SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 5 Test Setup www.ti.com 4 Test Setup 4.1 Test Equipment Voltage Source VIN: The input voltage source VIN must be a 0-V to 20-V variable DC source capable of supplying 10 ADC. Connect VIN to J4 as shown in Figure 4-2. Voltage Source V5IN: The input voltage source V5IN must be a 0-V to 5-V variable DC source capable of supplying 1 ADC. Connect V5IN to J1 as shown in Figure 4-2. Multimeters: • V1: VIN at TP11 (VIN) and TP12 (VIN_GND) • V2: V5IN at TP10 (V5IN) and TP9 (V5IN_GND) • V3: VSNS at J6-2 and GSNS at J6-1 • A1: VIN input current • A2: V5IN input current Output Load: The output load must be an electronic constant-resistance mode load capable of 0 ADC to 30 ADC at 1.05 V. Oscilloscope: A digital or analog oscilloscope can be used to measure the output ripple. The oscilloscope must be set for the following: • • • • • 1-MΩ impedance 20-MHz bandwidth AC coupling 1-µs/division horizontal resolution 20-mV/division vertical resolution Test point J6 can be used to measure the differential output ripple voltage, using a passive probe with the shortest leaded ground clip. For switch node voltage measurement, TP7 and TP8 can be used by placing the passive probe tip through TP7 and holding the ground barrel TP8 as shown in Figure 4-1. In this case, using a leaded ground connection may induce additional noise due to the large ground loop. Metal Ground Barrel Probe Tip TP7 TP8 Figure 4-1. Tip and Barrel Measurement for Switch Node Voltage Fan: Some of the components in this EVM can get hot, approaching temperatures of 60°C during operation. A small fan capable of 200–400 LFM is recommended to reduce component temperatures while the EVM is operating. The EVM must not be probed when the fan is not running. Recommended Wire Gauge: 1. VIN to J4 (8-V to 20-V input) The recommended wire size is 1× AWG 14 per input connection, with the total length of wire less than four feet (2-foot input, 2-foot return). 2. V5IN to J1 (5-V input) The recommended wire size is 1× AWG 18 per input connection, with the total length of wire less than four feet (2-foot input, 2-foot return). 3. J12 to LOAD The minimum recommended wire size is 2× AWG 14, with the total length of wire less than four feet (2-foot input, 2-foot return). 6 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Test Setup 4.2 Recommended Test Setup + A1 DC Source VIN Electronic Load V1 _ _ + J4 TP12 VIN_GND OFF SW1 ON Oscilloscope V3 TP11 VIN TP3 JP2 _ _ + GSNS TP15 VCCIO TP7 SW PGOOD TP8 GND J6 VSNS J12 J13 TP16 VCCIO_GND JP1 + TPS51219 EVM-630 _ V2 TP9 V5IN + J1: V5IN DC Source V5IN TP10 V5IN_GND J2: V5IN_GND + TP6 TP5 GND ILOAD _ A2 FAN Figure 4-2. TPS51219EVM-630 Recommended Test Setup Figure 4-2 is the recommended test setup to evaluate the TPS51219EVM. Working at an ESD workstation, ensure that any wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM. Input Connections: 1. Prior to connecting the DC source VIN, it is advisable to limit the source current from VIN to 10 A maximum. Ensure that VIN is initially set to 0 V and connected as shown in Figure 4-2. 2. Prior to connecting the DC source V5IN, it is advisable to limit the source current from V5IN to 1 A maximum. Ensure that V5IN is initially set to 0 V and connected as shown in Figure 4-2. 3. Connect a voltmeter V1 at TP11 (VIN) and TP12 (VIN_GND) to measure VIN voltage, V2 at TP9 (V5IN), and TP10 (V5IN_GND) to measure V5IN voltage as shown in Figure 4-2. 4. Connect a current meter A1 between DC source VIN and J4 to measure the input current. 5. Connect a voltmeter V2 between DC source V5IN and J1 to measure the 5-V input current. Output Connections: 1. Connect the load to J12 and J13, and set load to constant resistance mode to sink 0 ADC before VIN and V5IN are applied. 2. Connect a voltmeter V3 at J6-2 (VSNS) and J6-1 (GSNS) to measure the output voltage. Other Connections: Place a fan as shown in Figure 4-2 and turn it on, ensuring that air is flowing across the EVM. SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 7 Test Procedure www.ti.com 5 Test Procedure 5.1 Line/Load Regulation and Efficiency Measurement Procedure 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Ensure the load is set to constant resistance mode and to sink 0 ADC. Ensure SW1 on the EVM is at the OFF position before VIN and V5IN are applied. Increase VIN from 0 V to 8 V. Use V1 to measure input voltage. Increase V5IN from 0 V to 5 V. Use V2 to measure input voltage. Turn SW1 to the ON position to enable the controller. Vary the load from 0 ADC to 20 ADC; VOUT must remain in load regulation. Vary VIN from 8 V to 20 V; VOUT must remain in line regulation. Decrease the load to 0 A. Turn SW1 to the OFF position to disable the controller. Decrease V5IN to 0 V. Decrease VIN to 0 V. 5.2 List of Test Points Table 5-1. Functions of Each Test Point Test Point Name Description TP1 VREF VREF voltage TP2 REFIN REFIN voltage TP3 PGOOD Power good TP4 EN Output enable TP5 ILOAD Built-in dynamic load current TP6 GND GND for ILOAD TP7 SW Switch node TP8 GND GND for SW TP9 V5IN 5-V supply TP10 V5IN_GND GND for 5-V supply TP11 VIN VIN supply TP12 VIN_GND GND for VIN supply TP13 VCC_PCH Output for VCC_PCH TP14 VCC_PCH_GND GND for VCC_PCH TP15 VCCIO VCCIO TP16 VCCIO_GND GND for VCCIO J6-1 GSNS Differential sensing (low) J6-2 VSNS Differential sensing (high) 5.3 Equipment Shutdown 1. Shut down the load. 2. Shut down V5IN and VIN. 3. Shut down the fan. 8 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Performance Data and Typical Characteristic Curves 6 Performance Data and Typical Characteristic Curves Figure 6-1 through Figure 6-9 present typical performance curves for TPS51219EVM-630. 6.1 Efficiency 100 VIN = 8 V 90 80 Efficiency (%) 70 VIN = 12 V 60 VIN = 20 V 50 40 30 20 10 0 0.001 0.01 0.1 1 Output Current (A) 10 100 G001 Figure 6-1. TPS51219EVM-630 Efficiency 6.2 Load Regulation 1.07 1.065 1.06 Output Voltage (V) VIN = 8 V VIN = 20 V 1.055 1.05 VIN = 12 V 1.045 1.04 1.035 1.03 0 2 4 6 8 10 12 14 Output Current (A) 16 18 20 G002 Figure 6-2. TPS51219EVM-630 Load Regulation SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 9 Performance Data and Typical Characteristic Curves www.ti.com 6.3 Line Regulation 1.07 1.065 Output Voltage (V) 1.06 1.055 1.05 1.045 1.04 1.035 1.03 6 8 10 12 14 16 Input Voltage (V) 18 20 22 G003 Figure 6-3. TPS51219EVM-630 Line Regulation 6.4 Load Transient VIN = 20 V VSNS-GSNS (0.5 V/div) Offset: 1.05 V IOUT (8 A/div) Offset: 6 A Figure 6-4. TPS51219EVM-630 Load Transient (VOUT = 1.05 V) 10 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Performance Data and Typical Characteristic Curves 6.5 Output Ripple VIN = 12 V, VOUT = 1.05 V, IOUT = 20 A Figure 6-5. Output Ripple 6.6 Switch Node Voltage VIN = 12 V, VOUT = 1.05 V, IOUT = 20 A Figure 6-6. Switching Node Waveform SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 11 Performance Data and Typical Characteristic Curves www.ti.com 6.7 Turn-On/Turn-Off Waveform IOUT = 15 A IOUT = 15 A EN (5 V/div) EN (5 V/div) VSNS-GSNS (0.5 V/div) VSNS-GSNS (0.5 V/div) 0.5 V Pre-biased PGOOD (5 V/div) PGOOD (5 V/div) Figure 6-7. Enable Turn-On Figure 6-8. Enable Turn-Off 6.8 Output 0.5-V Prebias Turnon Waveform IOUT = 0 A EN (5 V/div) VSNS-GSNS (0.5 V/div) 0.5 V Pre-biased PGOOD (5 V/div) Figure 6-9. Output 0.5-V Prebias Turnon Waveform 12 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com EVM Assembly Drawing and PCB Layout 7 EVM Assembly Drawing and PCB Layout The following figures (Figure 7-2 through Figure 7-6) show the design of the TPS51219EVM-630 printed-circuit board (PCB). The EVM has been designed using four-layer, 2-oz copper circuit board. Figure 7-1. TPS51219EVM-630 Top Layer Assembly Drawing (Top View) Figure 7-2. TPS51219EVM-630 Bottom Layer Assembly Drawing (Bottom View) SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 13 EVM Assembly Drawing and PCB Layout www.ti.com Figure 7-3. TPS51219EVM-630 Top Copper Layer (Top View) Figure 7-4. TPS51219EVM-630 Internal Layer 1 (Top View) 14 TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com EVM Assembly Drawing and PCB Layout Figure 7-5. TPS51219EVM-630 Internal Layer 2 (Top View) Figure 7-6. TPS51219EVM-630 Bottom Copper Layer (Top View) SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 15 Bill of Materials www.ti.com 8 Bill of Materials Table 8-1. EVM Components List According to Schematic Shown in Figure 1 QTY Ref Des 7 Description Part Number MFR C1, C4, C27, C29–C31, 0.1 µF C37 Capacitor, Ceramic, 50 V, X5R, 10% STD STD 1 C3 10 nF Capacitor, Ceramic, 50 V, X5R, 10% STD STD 1 C5 2.2 µF Capacitor, Ceramic, 10 V, X5R, 10% GRM188R61A225KE34 muRata 4 C7, C8, C9, C10 10 µF Capacitor, Ceramic, 25 V, X5R, 20% TMK325BJ106MM-T Taiyo Yuden 5 C11, C12, C39–C41 330 µF Capacitor, Aluminum, 2 V, 6 mΩ, 20% EEFSX0D331XE Panasonic 12 C13–C24 22 µF Capacitor, Ceramic, 6.3 V, X5R, 10% JMK212BJ226MG-T Taiyo Yuden 1 C28 0.47 µF Capacitor, Ceramic, 50 V, X5R, 10% STD STD 2 C32, C35 1 µF Capacitor, Ceramic, 10 V, X5R, 10% C1608X5R1A105K TDK 3 C25, C34, C36 1 nF Capacitor, Ceramic, 50 V, CH, 10% STD STD 0 C2, C6, C26, C33, C38, NU C42 1 D1 BAT54 Diode, Schottky, 200 mA, 30 V BAT54 STD 0 D2–D4 NU 1 D5 BAT54S Diode, Dual Schottky, 200 mA, 30 V BAT54S STD 1 L1 0.36 µH Inductor, Power Choke SMT, 30 A, 1.05 mΩ MPCG1040LR36 NEC Tokin 1 Q1 CSD17302Q5A MOSFET, NChan, 30 V, 87 A, 7.3 mΩ CSD17302Q5A TI 1 Q2 CSD17312Q5 MOSFET, NChan, 30 V, 100 A, 1.4 mΩ CSD17312Q5 TI 1 Q4 CSD17303Q5 MOSFET, NChan, 30 V, 100 A, 2 mΩ CSD17303Q5 TI 0 Q3, Q5 NU 2 R3, R5 100 kΩ Resistor, Chip, 1/16 W, 1% STD STD 1 R4 1 kΩ Resistor, Chip, 1/16 W, 1% STD STD 1 R6 27 kΩ Resistor, Chip, 1/16 W, 1% STD STD 7 R8, R10, R11, R12, R14, R30, R31 0Ω Resistor, Chip, 1/16 W, 1% STD STD 1 R9 3.9 Ω Resistor, Chip, 1/16 W, 1% STD STD 1 R15 2.2 Ω Resistor, Chip, 1/10 W, 1% STD STD 1 R16 1.5 kΩ Resistor, Chip, 1/16 W, 1% STD STD 1 R17 150 kΩ Resistor, Chip, 1/16 W, 1% STD STD 3 R18–R20 10 kΩ Resistor, Chip, 1/16 W, 1% STD STD 1 R24 240 Ω Resistor, Chip, 1/16 W, 1% STD STD 2 R25, R26 0.25 Ω Resistor, Chip, 1 W, 1% WSL2512R2500FEA Vishay 1 R29 0.005 Ω Resistor, Chip, 1 W, 1% ERJM1WSF5M0U Panasonic 1 R7 10 Ω Resistor, Chip, 1/16 W, 1% STD STD 1 R33 130 Ω Resistor, Chip, 1/16 W, 1% STD STD 1 R34 1Ω Resistor, Chip, 1/16 W, 1% STD STD 0 R1, R2, R13, R21–R23, NU R27, R28, R32 1 SW1 G12AP Switch, ON-ON Mini Toggle G12AP Nikkai 1 U1 TPS51219RTE IC, High Performance, Single Synchronous Step-Down Controller TPS51219RTE TI 1 U2 TPS71533DCK IC, Regulator, LDO, 50 mA, 24 V TPS71533DCK TI 1 U3 TLC555CD IC, Timer, Low-Power CMOS TLC555D TI 1 U4 SN74HC14PW IC, HEX Schmitt Trigger Inverters. SN74HC14PW TI 1 U5 UCC27324D IC, Dual 4 A High Speed MOSFET Driver UCC27324D TI 16 Value TPS51219 Buck Controller Evaluation Module User's Guide SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Revision History 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (April 2012) to Revision A (February 2022) Page • Changed user's guide title.................................................................................................................................. 3 • Updated the numbering format for tables, figures, and cross-references throughout the document. ................3 SLUU818A – APRIL 2012 – REVISED FEBRUARY 2022 TPS51219 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated 17 IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATA SHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. 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