LMZ21701EVM

www.ti.com Table of Contents User’s Guide LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Table of Contents 1 Introduction.............................................................................................................................................................................2 2 Board Specifications.............................................................................................................................................................. 2 3 Schematic, Bill of Materials, and PCB Layout......................................................................................................................3 4 Typical Performance...............................................................................................................................................................6 5 Revision History......................................................................................................................................................................8 Trademarks SIMPLE SWITCHER® is a registered trademark of Texas Instruments. All trademarks are the property of their respective owners. SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 1 Introduction www.ti.com 1 Introduction The LMZ21701 and LMZ21700 SIMPLE SWITCHER® nano modules are easy-to-use DC-DC solutions optimized for space constrained applications. The LMZ21701 is capable of driving up to 1-A load with excellent power conversion efficiency, output voltage accuracy, line and load regulation, and load transient response. The LMZ21700 is a 650-mA load current version module, pin-to-pin compatible with the LMZ21701. The evaluation board is configured for 3.3-V output voltage from 5-V to 17-V input. The resistor voltage dividers, RFBT and RFBB, set the output voltage. The external capacitor CSS sets the soft-start time for VOUT. See the LMZ21701 1-A Nano Module With 17-V Maximum Input Voltage or LMZ21700 650-mA Nano Module With 17-V Maximum Input Voltage data sheets for component selection and device details. The board features turret terminals for easy connection to input supply, load, EN input, as well as soft start voltage and power-good flag monitoring. 2 Board Specifications • • • • • • VIN = 5 V to 17 V VOUT = 3.3 V 1-A max load (LMZ21701) 650-mA max load (LMZ21700) 4-layer PCB 4.2-cm × 4.2-cm PCB size Figure 2-1. Board Top View 2 Figure 2-2. Board Top View LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback www.ti.com Schematic, Bill of Materials, and PCB Layout 3 Schematic, Bill of Materials, and PCB Layout OPTIONAL COMPONENT FOR CONTROL LOOP MEASUREMENTS WITH FREQUENCY RESPONSE ANALYZER OPTIONAL CONNECTOR FOR TESTING THE BOARD Figure 3-1. Evaluation Board Schematic Table 3-1. Bill of Materials, VIN = 5 V to 17 V, VOUT = 3.3 V, IOUT (MAX) = 1000 mA (LMZ21701), 650 mA (LMZ21700) Designator Description Case Size Manufacturer Manufacturer P/N Quantity U1 SIMPLE SWITCHER Nano Module SIL0008E Texas Instruments LMZ21701SIL / LMZ21700SIL 1 SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 3 Schematic, Bill of Materials, and PCB Layout www.ti.com Table 3-1. Bill of Materials, VIN = 5 V to 17 V, VOUT = 3.3 V, IOUT (MAX) = 1000 mA (LMZ21701), 650 mA (LMZ21700) (continued) Designator Description Case Size Manufacturer Manufacturer P/N Quantity CIN CAP, CERM, 22 µF, 25 V, ±10%, X7R 1210 MuRata GRM32ER71E226KE15L 1 COUT CAP, CERM, 22 µF, 10 V, ±20%, X5R 0805 Taiyo Yuden LMK212BJ226MG-T 1 CSS CAP, CERM, 3300 pF, 50 V, ±10%, X7R 0402 MuRata GRM155R71H332KA01D 1 J1 Header, TH, 100 mil, 1x3, Gold plated Samtec, Inc TSW-103-07-G-S 1 Rfbb RES, 383 kΩ, 1%, 0.063 W 0402 Vishay-Dale CRCW0402383KFKED 1 Rfbt RES, 1.21 MΩ, 1%, 0.063 W 0402 Vishay-Dale CRCW04021M21FKED 1 Rpg RES, 10.0 kΩ, 1%, 0.063 W 0402 Vishay-Dale CRCW040210K0FKED 1 Rs RES, 10.0 Ω, 1%, 0.063 W 0402 Vishay-Dale CRCW040210R0FKED 1 SH-J1 Shunt, 100 mil, Gold plated, Black Samtec, Inc SNT-100-BK-G 1 TT1-12 Terminal, Turret, TH, Double Keystone Electronics 1502-2 8 Vout S+ Test Point, TH, Miniature, Yellow Keystone Electronics 5004 1 Figure 3-2. Evaluation Board Top Layer 4 Figure 3-3. Evaluation Board Mid Layer 1 LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated www.ti.com Schematic, Bill of Materials, and PCB Layout Figure 3-4. Evaluation Board Mid Layer 2 Figure 3-5. Evaluation Board Bottom Layer SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 5 Typical Performance www.ti.com 4 Typical Performance 100 0.6 VIN=4.5V VIN=5V VIN=9V VIN=12V VIN=15V VIN=17V POWER DISSIPATION (W) 90 EFFICIENCY (%) 80 70 60 50 40 VIN=4.5V VIN=5V VIN=9V VIN=12V VIN=15V VIN=17V 30 20 10 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.4 0.3 0.2 0.1 0.0 1.0 LOAD CURRENT (A) 0.5 0.0 3.306 0.2 0.3 0.4 3.302 3.300 0.6 0.7 0.8 0.9 1.0 C001 Figure 4-2. Power Dissipation VIN=4.5V VIN=5V VIN=9V VIN=12V VIN=15V VIN=17V 3.304 0.5 LOAD CURRENT (A) Figure 4-1. Efficiency OUTPUT VOLTAGE (V) 0.1 C001 ILOAD 500mA/Div 3.298 3.296 VOUT 20mV/Div AC 3.294 3.292 3.290 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 LOAD CURRENT (A) 1.0 1ms/Div 20MHz BW Figure 4-4. Load Transient C001 Figure 4-3. Line and Load Regulation WITH 500MHz SCOPE BANDWIDTH COUT2 = 3x1000pF 0805 NP0 Johanson Dielectrics 500R15N102JV4T Taiyo Yuden MK212BJ226MG-T 50mV/Div 10mV/Div 20MHz BW 1µs/Div Figure 4-5. Output Voltage Ripple (20-MHz Scope BW) 6 COUT1 = 22 F 10V 0805 X5R Taiyo Yuden MK212BJ226MG-T VOUT RIPPLE VOUT RIPPLE COUT = 22 F 10V 0805 X5R 500MHz BW 1µs/Div Figure 4-6. Output Voltage Ripple and HF Noise (500-MHz Scope BW) LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback www.ti.com Typical Performance 80 VOUT 1V/Div PGOOD 2V/Div ENABLE 500mV/Div Radiated Emissions (dBµV/m) ILOAD 500mA/Div Evaluation Board EN 55022 Class B Limit EN 55022 Class A Limit 70 60 50 40 30 20 10 1ms/Div 20MHz BW 0 0 Figure 4-7. Start-Up 200 400 600 Frequency (MHz) 800 1000 D002 Figure 4-8. LMZ21700 Radiated EMI (Default BOM), VIN = 12 V, VOUT = 3.3 V, IOUT = 650 mA 100 Evaluation Board EN 55022 Class B Limit EN 55022 Class A Limit 70 Peak Emissions Quasi Peak Limit Average Limit 90 Conducted Emissions (dBµV) Radiated Emissions (dBµV/m) 80 60 50 40 30 20 10 80 70 60 50 40 30 20 10 0 0 200 400 600 Frequency (MHz) 800 1000 0 0.1 1 Figure 4-9. LMZ21701 Radiated EMI (Default BOM), VIN = 12 V, VOUT = 3.3 V, IOUT = 1000 mA 10 100 Frequency (MHz) D004 D001 Figure 4-10. LMZ21700 Conducted EMI (1 µF, 2.2 µH Input Filter), VIN = 12 V, VOUT = 3.3 V, IOUT = 650 mA 100 Peak Emissions Quasi Peak Limit Average Limit Conducted Emissions (dBµV) 90 80 70 60 50 40 30 20 10 0 0.1 1 10 Frequency (MHz) 100 D003 Figure 4-11. LMZ21701 Conducted EMI (1 µF, 2.2 µH Additional Input Filter), VIN = 12 V, VOUT = 3.3 V, IOUT = 1000 mA SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated 7 Revision History www.ti.com 5 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (October 2014) to Revision B (January 2022) Page • Updated the numbering format for tables, figures, and cross-references throughout the document. ................2 • Updated the user's guide title ............................................................................................................................ 2 Changes from Revision * (April 2014) to Revision A (October 2014) Page • Added SVA cleanup and editing......................................................................................................................... 6 8 LMZ21700 and LMZ21701 Power Module Evaluation Module User's Guide Copyright © 2022 Texas Instruments Incorporated SNVU180B – APRIL 2014 – REVISED JANUARY 2022 Submit Document Feedback 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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