LM60440AQEVM TI | Alldatasheet

Document overview

  • Manufacturer or author: Texas Instruments, Incorporated [SNVU693,*]
  • PDF pages: 14

Technical content

Converter Data Sheet data sheets for additional features, detailed descriptions, and available options. Table 1. Device and Package Configurations Figure 1. LM60440AQEVM Board

www.ti.com

2 SNVU693–February 2020

Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated LM60440AQEVM User's Guide

Contents

15 LM60440AQEVM Load Transient 12 VIN, 5 VOUT, IOUT = 0 A to 4 A, TR = TF = 4 µs CH1 = VOUT, CH3 =

16 LM60440AQEVM Load Transient 12 VIN, 5 VOUT, IOUT = 0 A to 2 A, TR = TF = 2 µs CH1 = VOUT, CH3 =

19 LM60440AQEVM Low Frequency Conducted EMI Results 13.5 VIN, 5 VOUT, IOUT= 4 A (Blue-Average and 20 LM60440AQEVM High Frequency Conducted EMI Results 13.5 VIN, 5 VOUT, IOUT= 4 A (Blue-Average and List of Tables Trademarks All trademarks are the property of their respective owners.

1 Setup

1.1 Test Points

The test points on the top of the board can be used for connecting to the input and output of the EVM.

  • VIN -- Input supply to EVM including an EMI filter. Connect to a suitable input supply. Connect at this point for conducted EMI test.
  • VINS -- Input voltage sense to the IC. Connect to a DMM to measure input voltage after EMI filter.
  • VOUT -- Output voltage of EVM. Connect to a desired load.
  • VOUTS -- Output voltage sense test point. This test point is a direct short to VOUT. Connecte to a DMM to measure the output voltage.
  • GND -- Ground connections for the input supply, desired load, or test points.
  • VCC -- This test point is connected to the VCC pin. Connect to a DMM to monitor VCC regulation.
  • EN --This test point is connected to the EN pin. By default, a resistor divider (REN1 and REN2) from VIN is used to enable the IC.
  • PGOOD -- This test point is connected to the PGOOD pin from the IC. It is an open-drain output of the PGOOD pin. Can be tied to external supply through a pullup resistor or left open.

Figure 2. EVM Board Connections

4 SNVU693–February 2020

1.2 Jumpers and Test Points

See Figure 3 for jumper locations.

  • J_EN - This jumper allows the ENABLE input to be connected to GND in order to disable the IC. By default, a resistor divider (REN1 and REN2) from VIN is used to enable the IC.
  • J_PG - Use this jumper to select how the PGOOD pin can be connected. By default, a jumper connects the pin with a pullup resistor to the output voltage.

Figure 3. Jumper Locations

2 Operation

2.1 Quick Start

  1. Connect the voltage supply between VIN and GND banana jacks inputs.
  2. Connect the load between VOUT and GND test points.
  3. Set the supply voltage at an appropriate level between 4.8 V to 36 V. Set the current limit of the supply
  4. Turn on the power supply. With the default configuration, the EVM powers up and provides VOUT = 5 V.
  5. Monitor the output voltage. The maximum load current must be 4.0 A with the LM60440-Q1 device.

3 Schematic

Figure 4. LM60440AQEVM Schematic

6 SNVU693–February 2020

4 Board Layout

Figure 5. Top View of EVM Figure 6. Bottom View of EVM

8 SNVU693–February 2020

Figure 9. EVM Mid Layer Two Figure 10. EVM Bottom Copper Layer

5 Bill of Materials

Table 2. Bill of Materials

25 V, ±10%, X7R,

885012206076 Wurth Elektronik 1

25 V, ±10%, X5R,

16 V, ±10%, X5R,

6092 Keystone 1

0.1 W, AEC-Q200

10 SNVU693–February 2020

Table 2. Bill of Materials (continued)

5010 Keystone 2

5014 Keystone 3

5011 Keystone 3

50 V, ±5%,

6 Test Results (Preliminary)

Section 6.1 details the test results from the LM60440AQEVM variant.

6.1 LM60440AQEVM Test Results

The LM60440AQEVM variant is used for all figures from Figure 12 to Figure 20.

6.1.1 Efficiency and Load Regulation

Figure 11. LM60440AQEVM 5 VOUT Low Load Efficiency Figure 12. LM60440AQEVM 5 VOUT High Load Efficiency

6.1.2 Start-up and Load Regulation

Figure 13. LM60440AQEVM 5 VOUT Load Regulation Figure 14. LM60440AQEVM 5 VOUT, 4 A Load Start-up

12 SNVU693–February 2020

6.1.3 Load Transients

Figure 15. LM60440AQEVM Load Transient

12 VIN, 5 VOUT, IOUT = 0 A to 4 A, TR = TF = 4 µs

Figure 16. LM60440AQEVM Load Transient

12 VIN, 5 VOUT, IOUT = 0 A to 2 A, TR = TF = 2 µs

6.1.4 Thermal Picture

Figure 17. LM60440AQEVM 5 VOUT Thermal Capture,

12 VIN, 4 A Load, 400 kHz

Figure 18. LM60440AQEVM 5 VOUT Thermal Capture,

24 VIN, 4 A Load, 400 kHz

6.1.5 Conducted EMI

Figure 19. LM60440AQEVM Low Frequency Conducted

13.5 VIN, 5 VOUT, IOUT= 4 A

Figure 20. LM60440AQEVM High Frequency Conducted

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. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, regulatory or other requirements. These 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, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale or other applicable terms available either on ti.com or provided in conjunction with such 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 © 2022, Texas Instruments Incorporated