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EVM User's Guide: LM5169PEVM
LM5169PEVM Evaluation Module
Description
The LM5169PEVM is a 115V DC/DC buck regulator
that employs synchronous rectification to achieve
high conversion efficiency in a small footprint. The
EVM operates over a wide input voltage range of
20V to 115V to provide a regulated 12V output at
up to 0.650A with a 500kHz switching frequency.
The output voltage has better than 1.5% set-point
accuracy and is adjustable using an external resistor
divider. The module design uses the LM5169PNGUR
synchronous buck converter with wide input voltage
range, wide duty-cycle range, integrated high-side
and low-side power MOSFETs, advanced over-current
protection, and precision enable. The LM5169PNGUR
is rated to operate over a junction temperature range
of –40°C to +125°C.
SNVU895 – JANUARY 2025
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Get Started
1. Order the LM5169PEVM.
2. Carefully review this user's guide.
3. Set up the EVM as detailed in this user's guide.
4. Test and measure performance.
Features
•
Wide input voltage range from 20V to 115V
•
Fixed 3ms soft start
•
COT mode control architecture
•
Peak and valley current-limit protection
•
PFM mode for light load efficiency
•
WSON package for small solution size
Applications
•
Communications - brick power module
•
Industrial battery pack (≥10 S)
•
Battery pack - e-bike, e-scooter, LEV
•
Factory automation - PLC
•
Motor drives - BLDC
•
Grid infrastructure - solar
LM5169PEVM
Copyright © 2025 Texas Instruments Incorporated
Description
LM5169PEVM Evaluation Module
1
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Summary of Contents for Texas Instruments LM5169PEVM
- Page 1 EVM User's Guide: LM5169PEVM LM5169PEVM Evaluation Module Description Get Started The LM5169PEVM is a 115V DC/DC buck regulator 1. Order the LM5169PEVM. that employs synchronous rectification to achieve 2. Carefully review this user's guide. high conversion efficiency in a small footprint. The 3.
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Page 2: Kit Contents
This type of control requires adequate voltage ripple at the FB input to achieve stable regulation. The LM5169PEVM is set up with type III ripple injection to minimize the output voltage ripple while making sure of a stable regulator. The LM5169PEVM also provides the option to use type I or type II ripple injection. - Page 3 WARNING: While the EVM is energized, never touch the EVM or the electrical circuits as the EVM or the electrical circuits can be at high voltages capable of causing electrical shock hazard. SNVU895 – JANUARY 2025 LM5169PEVM Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 4 High Voltage! Electric shock is possible when connecting board to live wire. Board must be handled with care by a professional. For safety, use of isolated test equipment with overvoltage and overcurrent protection is highly recommended. LM5169PEVM Evaluation Module SNVU895 – JANUARY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 5 = 12V. Figure 2-1 for the location of the connectors. CAUTION Hot surface. Contact can cause burns. Do not touch. Figure 2-1. LM5169PEVM (Top View) Figure 2-2. LM5169PEVM (Bottom View) SNVU895 – JANUARY 2025 LM5169PEVM Evaluation Module Submit Document Feedback...
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Page 6: Detailed Description
PGOOD is an open-drain output that is tied to V through a 100kΩ, resistor R Input Supply Load Figure 2-3. LM5169PEVM Test Setup LM5169PEVM Evaluation Module SNVU895 – JANUARY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated... - Page 7 Hardware 2.2.1 Compatibility With the LM5017 The LM5169PEVM has component pads available to make the device compatible with the LM5017 for evaluation compared to the LM5169. Configuring the EVM for the LM5017 requires the following changes: • Remove the LM5169 PG resistor, R10 •...
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Page 8: Performance Curves
500mA/div 500mA/div 1ms/div 1ms/div = 24V = 100mA to 650mA = 24V = 10mA to 650mA Figure 3-6. Load Transient Figure 3-5. Load Transient LM5169PEVM Evaluation Module SNVU895 – JANUARY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated... - Page 9 VINEMI 100k 1µF GNDS 15uH 100V 100nF 100V 100nF 4.7uF 100V 4.7uF 100V 4.7uF VOUT 0.01 µF 332k VINEMI VOUT Figure 4-1. LM5169PEVM Schematic SNVU895 – JANUARY 2025 LM5169PEVM Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 10 Figure 4-5 show the board layout for the LM5169PEVM. The 8-pin NGU PowerPAD integrated circuit package offers an exposed thermal pad, which must be soldered to the copper landing on the PCB for best thermal performance. The PCB consists of a 4-layer design. There are 2-oz copper planes on the top and bottom and 1-oz copper mid-layer planes to dissipate heat with an array of thermal vias under the thermal pad to connect to all four layers.
- Page 11 Hardware Design Files Figure 4-4. Mid-Layer 2 Routing Figure 4-5. Bottom Layer SNVU895 – JANUARY 2025 LM5169PEVM Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 12 Hardware Design Files www.ti.com 4.3 Bill of Materials Table 4-1. LM5169PEVM Bill of Materials DESIGNATOR QUANTITY DESCRIPTION PART NUMBER MANUFACTURER 0.1µF ±10% 250V Ceramic Capacitor X7T C2012X7T2E104K125AE TDK Corporation 0805 (2012 Metric) CAP, CERM, 2200pF, 50V, +/- 10%, X7R, GCM155R71H222KA37D...
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Page 13: Additional Information
Additional Information Table 4-1. LM5169PEVM Bill of Materials (continued) DESIGNATOR QUANTITY DESCRIPTION PART NUMBER MANUFACTURER Diode, Schottky, 40V, 0.2A, SOD-923 NSR0240P2T5G ON Semiconductor Inductor, Shielded Drum Core, Ferrite, 15uH, MSS7341T-153MLB Coilcraft 1.8A, 0.05 ohm, AEC-Q200 Grade 1, SMD RES, 1.0, 5%, 0.4 W, AEC-Q200 Grade 0,... - Page 14 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 15 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 16 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 17 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 18 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
- Page 19 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2025, Texas Instruments Incorporated...
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