TPS51220EVM

www.ti.com Table of Contents User’s Guide TPS51220 Buck Controller Evaluation Module User's Guide Table of Contents 1 Description.............................................................................................................................................................................. 2 2 Electrical Performance...........................................................................................................................................................2 3 Schematic................................................................................................................................................................................3 4 Test Setup and Procedure......................................................................................................................................................4 4.1 Test Setup.......................................................................................................................................................................... 4 4.2 Test Procedure................................................................................................................................................................... 4 5 Configuration.......................................................................................................................................................................... 5 5.1 Switching Frequency Selection.......................................................................................................................................... 5 5.2 Skip Mode and Control Scheme Selection.........................................................................................................................5 5.3 Current-Sensing Selection................................................................................................................................................. 5 5.4 Overcurrent Limit and Discharge Selection........................................................................................................................6 5.5 Control Mode and Protection Selection..............................................................................................................................6 5.6 Soft-Start Setting Selection................................................................................................................................................ 6 5.7 Output Voltage Adjustment................................................................................................................................................ 6 6 Bill of Materials....................................................................................................................................................................... 7 7 EVM Assembly Drawing and PCB Layout............................................................................................................................ 9 8 Reference...............................................................................................................................................................................11 9 Revision History....................................................................................................................................................................11 Trademarks All trademarks are the property of their respective owners. SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 1 Description www.ti.com 1 Description The TPS51220 is a dual, peak-current mode, synchronous step-down controller with three low-dropout (LDO) regulators. It is optimized for 5-V /3.3-V notebook system power supplies. A 99% duty cycle operation enables designers to complete Li-ion battery applications from 2-cells to 4-cells cost effectively. The TPS51220 supports high-efficiency, fast transient response and 99% duty cycle operation. DCR current sensing provides lossless current sensing and free MOSFET selection; resistor sensing supports accurate current-sensing operation. It supports supply input voltages ranging from 4.5 V to 30 V and output voltages from 1 V to 12 V. High-current, 5 V at 100 mA, 3.3 V at 10 mA, onboard linear regulators have glitch-free switchover function to SMPS, and the 2-V reference has a 100-μA capability. A peak current-sensing current mode and fixed-frequency control scheme support the full range of current mode operation including simplified loop compensation, ceramic output capacitors, as well as a seamless transition to reduced frequency operation at light-load condition. This evaluation module demonstrates the performance of the high-current/ high-efficiency TPS51220 buck converter 2 Electrical Performance SPECIFICATIONS TEST CONDITIONS Input voltage range (VIN) CH1 CH2 2 MIN TYP MAX 8 12 20 Output voltage 5 280 UNIT V V Operating frequency VIN = 12 V, Iout1 = 6 A Output current VIN = 8 V to 20 V Over current limit VIN = 12 V 9 A Output ripple voltage VIN = 12 V, Iout1 = 6 A 15 mVp-p 3.3 V Operating frequency VIN = 12 V, Iout2 = 6 A 280 kHz Output current VIN = 8 V to 20 V Over current limit VIN = 12 V Output ripple voltage VIN = 12 V, Iout2 = 6 A 6 Output voltage TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated kHz A 6 A 9 A 15 mVp-p SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback www.ti.com Schematic + + + + + + 3 Schematic Figure 3-1. HPA302 EVM Schematic Diagram (DCR-Sensing) SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 3 Test Setup and Procedure www.ti.com 4 Test Setup and Procedure 4.1 Test Setup Connect test equipment and HPA302-EVM board as shown in Figure 4-1. CH1 Oscilloscope TP7 (VREG5) SYNC TP9 (VREG3) GNDS VOUT1 TP1 - TP2 + - Electronic Load-1 DMM1 DMM4 DMM5 + + + TP8 (VREF2) - GND1 + + TP15 TP14 DMM3 - VIN - 12 V/10 A Power Supply GNDI GND2 + TP13 DMM6 - - Electronic Load-1 DMM2 HPA302 TPS5122xEVM + + TP12 VOUT2 CH2 Oscilloscope Figure 4-1. Equipment Setup for TPS51220EVM Board 4.2 Test Procedure 1. Ensure that the switches S1 (EN1), S2 (EN2), and S3 (EN) are in OFF position. 2. Ensure that the shunt jumpers for JP1 (TRIP) is set 7-pin to 8-pin (VREG5; Vocl = 60 mV, Dischargeenabled), JP2 (FUNC) is set 1-pin to 2-pin (GND; UVP/OVP-enabled), and JP3, JP4 are set 3-pin to 4-pin (VREF2; Auto-skip). 3. Apply appropriate VIN voltage to VIN and GNDI terminals. Check that VREG3 (3.3V-LDO) starts up. 4. Turn S3 (EN) to ON. Check that VREG5 (5V-LDO) and VREF2 (2V-Ref) start up. 5. When S1 (EN1) is turned to ON, CH1-output starts up. 6. When S2 (EN2) is turned to ON, CH2-output starts up. 4 TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback www.ti.com Configuration 5 Configuration Users can configure this EVM per the following configurations. 5.1 Switching Frequency Selection The switching frequency can be set by the RF-resistor (R15) or applying external clock into RF pin on the EVM. Default setting is 280-kHz using RF resistor. Table 5-1. Switching Frequency Selection Connection Add RF-resistor from RF to GND and be R31 open Internal f sw 1 ´ 108 = [kHz] RF [W] Apply external clock signal to SYNC (5 Vpp and 50% duty) , remove R15 in addition, and add 0-Ω to R31. External 5.2 Skip Mode and Control Scheme Selection The skip mode can be set by the SKIPSEL1,2 pins using JP3 and JP4 on the EVM. Default setting is Auto-skip. Table 5-2. Skip Mode Selection Jumper (JP3, JP4) set to SKIPSEL1,2 Skip Top (1-2 pin shorted) GND CCM Second (3-4 pin shorted) VREF2 Auto-skip Third (5-6 pin shorted) VREG3 OOA (400-kHz) 5.3 Current-Sensing Selection The current-sensing scheme can be set by the external current sensing devices, using some resistors on the EVM. Default setting is Inductor DCR sensing Table 5-3. Current-Sensing Scheme Selection (CH1) R8 R29 R35 R36 R6 R7 R25 Inductor DCR Put on(1) Put on(1) (if necessary) Put on(1) Put on(1) Open Open Open External Resistor Put on(1) Put on(1) (if necessary) Put on(1) Open Put on (1) Cut trace Open Open R20 R19 R26 Open Open Open Put on (1) Cut trace Open Open (1) "Put on” means add appropriate resistor. Table 5-4. Current Sensing Scheme Selection (CH2) R18 Inductor DCR External Resistor (1) R28 R33 on(1) Put (if necessary) Put Put on(1) Put on(1) (if necessary) Put on(1) Put on(1) on(1) R37 Put on(1) Open "Put on” means add appropriate resistor. For external resistor sensing, cut the trace as follows. SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 5 Configuration www.ti.com Figure 5-1. (CH1) Cut Trace Underneath R6 Figure 5-2. (CH2) Cut Trace Underneath R20 5.4 Overcurrent Limit and Discharge Selection The overcurrent limit threshold and discharge function can be set by the TRIP pin using JP1 on the EVM. Default setting is 60 mV and discharge enabled. Table 5-5. TRIP/ Discharge Mode Selection Jumper (JP2) set to TRIP VOCL Discharge Top (1-2 pin shorted) GND 31 mV Enabled Second (3-4 pin shorted) VREF2 31 mV Disabled Third (5-6 pin shorted) VREG3 60 mV Disabled Bottom (7-8 pin shorted) VREG5 60 mV Enabled 5.5 Control Mode and Protection Selection The control mode and protection function can be set by the FUNC pin using JP2 on the EVM. Default setting is current mode and UVP/OVP-enabled. Table 5-6. Control Mode/OVP Selection Jumper (JP2) set to FUNC Mode OVP Top (1-2 pin shorted) GND Current Enabled Second (3-4 pin shorted) VREF2 D-CAP Disabled Third (5-6 pin shorted) VREG3 D-CAP Enabled Bottom (7-8 pin shorted) VREG5 Current Disabled 5.6 Soft-Start Setting Selection Output voltage soft-start time can be set by the ENx pin using some capacitors on the EVM. Default setting is integrated soft start. Table 5-7. Soft-Start Setting Selection(1) (1) CH1 (C20) CH2 (C7) Integrated soft start Open (adding small bypass-capacitor; 100 pF) Open (adding small bypass-capacitor; 100 pF) External soft start Put on Put on When external soft start is selected, add appropriate capacitor on C20 and/or C7.) 5.7 Output Voltage Adjustment Output voltage is programmable by changing R2, R3, and R5 for CH1 and R21, R23, and R24 for CH2. Default setting is 5 V for CH1 and 3.3 V for CH2. 6 TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback www.ti.com Vout(CH1) = Bill of Materials (R5 + R2 + R3) x Vref (= 1 V) R3 (1) When Vout(CH1) is set above 5 V, V5SW input resistor (R22) must be open. Vout(CH2) = (R21 + R23 + R24) x Vref (= 1 V) R24 (2) 6 Bill of Materials Table 6-1. Bill of Materials Reference Qty Description Size Mfr Part Number C1, C14, C26 3 Capacitor, Ceramic, 10 nF, 50V, X7R, 20% 0603 Std Std C2, C3 2 Capacitor, SPCAP, 150 μF, 6.3-V, 15-mΩ, 20% 7343 Panasonic EEFCX0J151R C4, C5, C6, C21, C22, C23 6 Capacitor, Ceramic, 0.1 μF, 50V, X7R, 20% 0603 TDK C1608X7R1H104K C7, C16, C20, C27 4 Capacitor, Ceramic, 100 pF, 50V, CH, 5% 0603 TDK C1608CH1H101J C8, C33 0 Capacitor, Ceramic, 10 μF, 25V, X7R, 20% 1210 – – C9, C18, C19, C32 4 Capacitor, Ceramic, 10 μF, 25V, X7R , 20% 1210 Murata GRM32DR71E106KA C10 1 Capacitor, Ceramic, 2.2F, 6.3V, X7R (or X5R), 10% 0603 Murata TDK GRM188R70J225KA C1608X5R0J225K C11 0 Capacitor, Ceramic 0603 – – C12 1 Capacitor, Ceramic, 47pF, 50V, CH, 5% 0603 TDK C1608CH1H470J C13 1 Capacitor, Ceramic, 0.22F, 50V, X7R, 10% 0630 TDK C1608X7R1E224K C15 1 Capacitor, Ceramic, 10F, 10V, X7R (or X5R), 10% 0805 Murata TDK GRM21BR71A106K C2012X5R0J106K C17 0 Capacitor, Ceramic 0603 – – C24, C29 0 Capacitor 7343 – – C25, C30 2 Capacitor, SPCAP, 220F, 4-V, 15-mΩ, 20% 7343 Panasonic EEFCX0G221R C28 0 Capacitor, Ceramic 0603 – – C31 0 Capacitor, Ceramic 0603 – – D1, D2 0 Diode 0.1 × 0.049 inch – – L1 1 Inductor, 4.7μH, 10.2A, 12.9-mΩ 0.4 × 0.4 inch TOKO FDV1040-4R7M L2 1 Inductor, 3.3μH, 10.7A, 10.5-mΩ 0.4 × 0.4 inch TOKO FDV1040-3R3M Q1, Q3 2 MOSFET, N-ch, 30-V, 14-A, 9.7-mΩ SO8 TI CSD17307Q5A Q2, Q4 2 MOSFET, N-ch, 30-V, 21-A, 4.5-mΩ SO8 TI CSD17310Q5A R1, R4, R9, R17, R22, R34, R35,R36, R37 9 Resistor, Chip, 0Ω, 1/10W, 1% 0603 Std Std R2 1 Resistor, Chip, 120kΩ, 1/10W, 1% 0603 Std Std R3 1 Resistor, Chip, 30kΩ, 1/10W, 1% 0603 Std Std R5, R23 2 Resistor, Chip 49.9 or 51Ω, 1/10W, 1% 0603 Std Std R6 0 Resistor, Chip, mΩ, 1 W, 1% 3712 Std Std R7, R25 0 Resistor, Chip 0603 Std Std R8 1 Resistor, Chip, 7.5kΩ, 1/10W, 1% 0603 Std Std R10 0 Resistor, Chip 0603 Std Std R11, R14 2 Resistor, Chip, 470kΩ, 1/10W, 1% 0603 Std Std R12, R13 2 Resistor, Chip, 10kΩ, 1/10W, 1% 0603 Std Std R15 1 Resistor, Chip, 360kΩ, 1/10W, 1% 0603 Std Std R16 0 Resistor, Chip 0603 Std Std R18, R28 2 Resistor, Chip, 5.6kΩ, 1/10W, 1% 0603 Std Std R19, R26 0 Resistor, Chip 0603 Std Std SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 7 Bill of Materials www.ti.com Table 6-1. Bill of Materials (continued) Reference 8 Qty Description Size Mfr Part Number R20 0 Resistor, Chip, mΩ, 1 W, 1% 3712 Std Std R21 1 Resistor, Chip, 62kΩ, 1/10W, 1% 0603 Std Std R24 1 Resistor, Chip, 27kΩ, 1/10W, 1% 0603 Std Std R27 0 Resistor, Chip 0603 Std Std R32 0 Resistor, Chip 0603 Std Std R29 1 Resistor, Chip, 4.7kΩ, 1/10W, 1% 0603 Std Std R30, R33 2 Resistor, Chip, 15.4Ω, 1/10W, 1% 0603 Std Std R31 0 Resistor, Chip 0603 Std Std R38 1 Resistor, Chip, 0Ω, 1/10W, 1% 0603 Std Std R39 1 Resistor, Chip, 0Ω, 1/10W, 1% 0603 Std Std S1, S2, S3 3 Switch, ON-ON Mini Toggle 0.28 × 0.18" Nikkai G12AP J1, J2 2 Terminal Block, 2-pin, 15A, 5,1mm 0.40 × 0.35inch OST ED1609 JP1, JP2, JP3, JP4 4 Header, 2×4-pin, 100mil spacing (36-pin strip) 0.20 × 0.40inch Sullins PTC36DAAN — 4 Shunt, 100-mil, Black 0.100 Std Std TP1, TP2 2 Pin, Probe monitor (VOUT1) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP3, TP10, TP11 3 Pin, Probe monitor (EN, ENx) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP4, TP17 2 Pin, Probe monitor (SW-node) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP5 0 Pin, Probe monitor (IMON) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP6, TP18 2 Pin, Probe monitor (PGOOD) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP7, TP8, TP9 3 Pin, Probe monitor (LDO) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP12, TP13 2 Pin, Probe monitor (VOUT2) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP14, TP15 2 Pin, Probe monitor (VIN) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S TP16 0 Pin, Probe monitor (IMON) 0.12(D) × 0.4 inch Keystone or MAC8 5002 LC-2-S U1 1 IC, Dual Peak Current Mode, Sync. Stepdown Controller QFN32 TI TPS51220RHB VIN, GNDI 2 Pin, Wiring Terminal (VIN) 0.12(D) × 0.4 inch Mill Max or MAC8 3183-2-00-15-00-00-080 or WT-3-1 VOUT1, GND1, GND3 3 Pin, Wiring Terminal (VOUT1) 0.12(D) × 0.4 inch Mill Max or MAC8 3183-2-00-15-00-00-080 or WT-3-1 VOUT2, GND2, GND4 3 Pin, Wiring Terminal (VOUT2) 0.12(D) × 0.4 inch Mill Max or MAC8 3183-2-00-15-00-00-080 or WT-3-1 SYNC, GNDS 2 Pin, Wiring Terminal (SYNC) 0.12(D) × 0.4 inch Mill Max or MAC8 3183-2-00-15-00-00-080 or WT-3-1 TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback www.ti.com EVM Assembly Drawing and PCB Layout 7 EVM Assembly Drawing and PCB Layout Figure 7-1. Top Layer/ Assembly Figure 7-2. Inner Layer 1 SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 9 EVM Assembly Drawing and PCB Layout www.ti.com Figure 7-3. Inner Layer 2 Figure 7-4. Bottom Layer/ Assembly 10 TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback www.ti.com Reference 8 Reference 1. TPS51220; Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller data sheet (SLVS785) 2. TPS51221, Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller data sheet (SLVS786) 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (May 2011) to Revision B (February 2022) Page • Updated the numbering format for tables, figures, and cross-references throughout the document. ................2 • Updated the user's guide title............................................................................................................................. 2 SLVU251B – JUNE 2008 – REVISED FEBRUARY 2022 Submit Document Feedback TPS51220 Buck Controller Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 11 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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