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EVM User's Guide: LM5169FEVM
LM5169FNGUR Evaluation Module
Description
The LM5169FEVM is a fly-buck regulator that utilizes
the LM5169FNGUR to produce a regulated 10V
output capable of supplying a 300mA load on the
primary side of the transformer with a switching
frequency of 750kHz. A reflected output of 10V,
providing up to 300mA, is available on the secondary
side of the transformer. The LM5169FNGUR is a
synchronous buck converter with a wide input voltage
range, integrated power MOSFETs, overcurrent
protection and precision enable.
Get Started
1. Order the
LM5169FEVM
2. Carefully review the user's guide.
3. Set up the EVM as detailed in the user's guide.
SNVU894 – DECEMBER 2024
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from ti.com.
LM5169FEVM
Copyright © 2024 Texas Instruments Incorporated
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
•
FPWM mode for fly-buck capability
•
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
LM5169FNGUR Evaluation Module
Description
1
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Summary of Contents for Texas Instruments LM5169FEVM
- Page 1 LM5169FNGUR Evaluation Module 4. Test and measure performance. Description Features The LM5169FEVM is a fly-buck regulator that utilizes the LM5169FNGUR to produce a regulated 10V • Wide input voltage range from 20V to 115V output capable of supplying a 300mA load on the •...
- Page 2 III ripple injection to minimize the output voltage ripple while making sure there is a stable regulator. The LM5169FEVM also provides the option to use type I or type II ripple injection. See the LM516x, 0.65A/0.3A, 120V Absolute Maximum, Step-Down Converter With Fly-Buck™...
- 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. SNVU894 – DECEMBER 2024 LM5169FNGUR Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 4 High Voltage! Electric shock is possible when connecting board to live wire. Board needs to be handled with care by a professional. For safety, use of isolated test equipment with overvoltage and overcurrent protection is highly recommended. LM5169FNGUR Evaluation Module SNVU894 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 5 = 10V, and V = 10V. OUT2 Figure 2-3 for the location of the connectors. Figure 2-1. LM5169FEVM (Top View) Figure 2-2. LM5169FEVM (Bottom View) SNVU894 – DECEMBER 2024 LM5169FNGUR Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 6 PGOOD is an open-drain output that is tied to V through a 100kΩ, resistor R LM5169FNGUR Evaluation Module SNVU894 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 7 Figure 2-3. LM5169FEVM Test Setup 2.2.1 Compatibility With the LM5017 The LM5169FEVM 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: •...
- Page 8 5V/div 5V/div 4ms/div 800µs/div = 48V = 100mA = 48V = 100mA OUT2 OUT2 Figure 3-5. Typical Start-Up Waveform Figure 3-6. Typical Shutdown Waveform LM5169FNGUR Evaluation Module SNVU894 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 9 Unless otherwise specified, the following conditions apply: T = 25ºC, I = primary output current, I OUT1 OUT2 secondary output current Table 3-1. LM5169FEVM Electrical Performance Characteristics Parameter Test Conditions UNITS INPUT CHARACTERISTICS Input voltage range, V EVM input voltage operating range...
- Page 10 VOUT 15uH 100k NSR0240P2T5G 1.00M GNDS 0.1 µF 0.1 µF 4.7uF 4.7uF 4.7uF 1µF VINEMI 332k VOUT 0.01 µF VOUT Figure 4-1. LM5169FEVM Schematic LM5169FNGUR Evaluation Module SNVU894 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 11 4.2 PCB Layout Figure 4-2 through Figure 4-5 show the board layout for the LM5169FEVM. The 8-pin NGU PowerPAD ™ package offers an exposed thermal pad, which must be soldered to the copper landing on the PCB for excellent 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 12 Hardware Design Files www.ti.com Figure 4-4. Mid-Layer 2 Routing Figure 4-5. Bottom Layer LM5169FNGUR Evaluation Module SNVU894 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 13 Hardware Design Files 4.3 Bill of Materials Table 4-1. LM5169FEVM Bill of Materials DESIGNATOR QUANTITY DESCRIPTION PART NUMBER MANUFACTURER CAP, CERM, 0.1uF, 250V, +/- 10%, X7T, C2012X7T2E104K125AA 0805 CAP, CERM, 2200pF, 50V, +/- 10%, X7R, GCM155R71H222KA37D MuRata AEC-Q200 Grade 1, 0402 3300pF ±5% 100V Ceramic Capacitor X7R...
- Page 14 Additional Information www.ti.com Table 4-1. LM5169FEVM Bill of Materials (continued) DESIGNATOR QUANTITY DESCRIPTION PART NUMBER MANUFACTURER 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, ESR10EZPJ1R0...
- Page 15 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 © 2024, Texas Instruments Incorporated...
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