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Performance Curves

16

SNVU620A – September 2018 – Revised April 2019

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Copyright © 2018–2019, Texas Instruments Incorporated

LM5164-Q1 EVM User Guide

Figure 21. No-Load Switching

Figure 22. Full-Load Switching

V

VIN

= 24 V

Load = 1 A

Figure 23. Thermal Performance

V

VIN

= 48 V

Load = 1 A

Figure 24. Thermal Performance

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Содержание LM5164-Q1 EVM

Страница 1: ...IN range wide duty cycle range integrated high side and low side power MOSFETs cycle by cycle overcurrent protection and precision enable With AEC Q100 grade 1 automotive qualification the LM5164 Q1 is rated to operate over a junction temperature range of 40 C to 150 C The LM5164 Q1 is available in an 8 pin SO PowerPAD package to enable high density low component count DC DC solutions The LM5164 Q...

Страница 2: ...ad and Line Regulation Performance 14 12 Load Transient Response 14 13 No Load Start up with VIN 14 14 Full Load Start up with VIN 14 15 No Load Start up with EN UVLO 14 16 Full Load Start up Shutdown with EN UVLO 14 17 EN UVLO Start up in Prebias 14 18 Short Circuit 14 19 Short Circuit Recovery 14 20 No Load Short Circuit and Short Circuit Recovery 14 21 No Load Switching 15 22 Full Load Switchin...

Страница 3: ... Safety Maintain a clean and orderly work area Qualified observer s must be present anytime circuits are energized Effective barriers and signage must be present in the area where the TI HV EVM and its interface electronics are energized indicating operation of accessible high voltages may be present for the purpose of protecting inadvertent access All interface circuits power supplies evaluation ...

Страница 4: ...t of a production unit Safety and Precautions The EVM is designed for professionals who have received the appropriate technical training and is designed to operate from an AC power supply or a high voltage DC supply Please read this user guide and the safety related documents that come with the EVM package before operating this EVM CAUTION Do not leave the EVM powered when unattended WARNING Hot s...

Страница 5: ...supply current as low as 24 μA at 48 V input With integrated 100 V power MOSFETs synchronous rectification achieves high conversion efficiency over a wide load current range Various features incorporated for enhanced reliability and safety include cycle by cycle peak current limit thermal shutdown protection internal output voltage soft start timer 1 5 V precision enable threshold and an open drai...

Страница 6: ...90 at an output voltage of 12 V and load current above 3 mA input voltage 24 V No load supply current as low as 24 µA without EN UVLO resistor divider Integrated 0 7 Ω NMOS buck switch supports 99 duty cycle for low dropout voltage Integrated 0 3 Ω NMOS synchronous rectifier eliminates external Schottky diode ENABLE and PGOOD terminals with 1 MΩ and 100 kΩ pullups to VIN and VOUT respectively Mono...

Страница 7: ...48 V 1 4 A Soft start time tSS 3 ms SYSTEM CHARACTERISTICS Switching frequency in CCM FSW nom VIN 48 V 300 kHz Half load efficiency ηHALF 1 IOUT 0 5 A VIN 24 V 95 Full load efficiency ηFULL IOUT 1 A VIN 15 V 93 2 VIN 24 V 93 4 VIN 48 V 92 1 VIN 100 V 86 4 LM5164 Q1 Evaluation Module The LM5164 Q1 EVM is configured to deliver 12 V and 1 A at a switching frequency of 300 kHz As shown in Figure 2 a t...

Страница 8: ... return path for both supply voltage and load Connect to supply and load grounds with short wires VIN Input voltage to the converter VIN connector and test point connects to the input capacitors and the VIN pin of the LM5164 Q1 Connect the supply voltage from a power supply or a battery between the VIN and GND connectors The voltage range should be higher than 6 V for the device to be active VVIN ...

Страница 9: ...EN UVLO Test point to monitor the EN UVLO pin of the device This test point is to monitor the voltage on the device EN UVLO pin EN UVLO Jumper Set EN UVLO pin options Use this jumper to enable disable the LM5164 Q1 PIN 1 is connected to GND and PIN 2 is connected to EN UVLO 1 Connect PIN 1 to PIN 2 to disable the device 2 Leave PIN 1 and PIN 2 open for EN UVLO to be connected to VIN through a resi...

Страница 10: ...4QDDARQ1 U1 RON EN VIN 0 R2 BST SW FB PG L3 4 7uF C16 4 7uF C17 VIN 15uH L2 4 7uF C18 VIN_EMI GND_EMI 0 1µF C20 0 1µF C19 GND 0 1µF C1 GND GND_EMI GND_EMI EN PG VIN_EMI VIN_EMI VIN VIN VIN GND GND GND GND VOUT VOUT VOUT VOUT 105k R8 1 00M R5 332k R7 100k R10 49 9k R9 453k R4 453k R6 2200pF C3 22µF C6 22µF C7 56pF C11 Schematic www ti com 10 SNVU620A September 2018 Revised April 2019 Submit Documen...

Страница 11: ... an exposed thermal pad which must be soldered to the copper landing on the PCB for optimal 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 Test points have been provided for ease of use to connect the power...

Страница 12: ...ti com 12 SNVU620A September 2018 Revised April 2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated LM5164 Q1 EVM User Guide Figure 7 Mid Layer 2 Routing Figure 8 Bottom Layer Routing ...

Страница 13: ...or Shielded Drum Core Ferrite 68 µH 1 8 A 0 17 ohm AEC Q200 Grade 1 MSS1246T MSS1246T 683MLB Coilcraft 1 Inductor Shielded Drum Core Ferrite 68 µH 2 1 A 0 11 ohm AEC Q200 Grade 1 SRR1260A SRR1260A 680M Bourns Inductor Shielded 68uH 1 9A 0 11ohm AEC Q200 Grade 1 7447714680 7447714680 Wurth Inductor Shielded Powdered Iron 68uH 2 3 A 0 18 ohm MPT1040 H1 MPT1040 680H1 Delta L2 15µH Inductor Shielded D...

Страница 14: ...rformance Curves www ti com 14 SNVU620A September 2018 Revised April 2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated LM5164 Q1 EVM User Guide 8 Performance Curves Figure 9 Efficiency Performance Log Scale Figure 10 Efficiency Performance Linear Scale Figure 11 Load and Line Regulation Performance VVIN 24 V Load 0 25 A to 1 A 0 1A µs Figure 12 Load Transient Re...

Страница 15: ... 24 V Load 0 A Figure 15 No Load Start up with EN UVLO VVIN 24 V Load 1 A Figure 16 Full Load Start up Shutdown with EN UVLO VVIN 24 V Load 0 A Figure 17 EN UVLO Start up in Prebias VVIN 24 V Load 0 A to short Figure 18 Short Circuit VVIN 24 V Load Short to 0 A Figure 19 Short Circuit Recovery VVIN 24 V Load 0 A to Short to 0 A Figure 20 No Load Short Circuit and Short Circuit Recovery ...

Страница 16: ...il 2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated LM5164 Q1 EVM User Guide Figure 21 No Load Switching Figure 22 Full Load Switching VVIN 24 V Load 1 A Figure 23 Thermal Performance VVIN 48 V Load 1 A Figure 24 Thermal Performance ...

Страница 17: ... Feedback Copyright 2018 2019 Texas Instruments Incorporated LM5164 Q1 EVM User Guide VIN 48 V Load 1 A R1 1 Ω C2 680 pF Figure 25 CISPR 25 Class 5 Conducted Emissions Plot 150 kHz to 30 MHz VIN 48 V Load 1 A R1 1 Ω C2 680 pF Figure 26 CISPR 25 Class 5 Conducted Emissions Plot 30 MHz to 108 MHz VIN 24 V Load 1 A R1 1 Ω C2 680 pF Figure 27 CISPR 25 Class 5 Conducted Emissions Plot 150 kHz to 30 MHz...

Страница 18: ...018 2019 Texas Instruments Incorporated Revision History Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current version Changes from Original September 2018 to A Revision Page Updated EVM schematic 10 Cleaned up BOM added second sources 13 Added CISPR 25 EMI figures 14 ...

Страница 19: ...other than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Страница 20: ... These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation...

Страница 21: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Страница 22: ... any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Страница 23: ...OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Страница 24: ...se resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for...

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