Texas Instruments LM5122EVM-2PH Manuel utilisateur

LM5122EVM-2PH Evaluation Module

User's Guide

Literature Number: SNVU205

APRIL 2013

Contents

1 Introduction ........................................................................................................................ 4

2 Features and Electrical Performance ..................................................................................... 4

3 Test Points ......................................................................................................................... 4

3.1 Test Points ............................................................................................................... 4

4 Test Equipment ................................................................................................................... 5

4.1 Power Supply ............................................................................................................ 5

4.2 Electronic Load .......................................................................................................... 5

4.3 Meters ..................................................................................................................... 5

4.4 Oscilloscope .............................................................................................................. 5

5 Test Setup and Procedure .................................................................................................... 5

5.1 Precaution & Wire Gauge .............................................................................................. 5

5.2 Test Setup ................................................................................................................ 6

5.3 Quick Test Procedure ................................................................................................... 6

6 Performance Curves ............................................................................................................ 6

6.1 Efficiency ................................................................................................................. 6

6.2 Load Transient ........................................................................................................... 7

6.3 Interleaving ............................................................................................................... 7

6.4 Light Load Operations .................................................................................................. 8

6.5 Startup .................................................................................................................... 9

6.6 Loop Response .......................................................................................................... 9

7 Schematic ......................................................................................................................... 10

8 Layout .............................................................................................................................. 12

9 Bill of Materials ................................................................................................................. 15

2Table of Contents SNVU205–APRIL 2013

Submit Documentation Feedback

www.ti.com

List of Figures

1 Connection Diagram........................................................................................................ 5

2 Efficiency..................................................................................................................... 6

3 Load Transient .............................................................................................................. 7

4 Interleaving................................................................................................................... 7

5 Pulse Skip.................................................................................................................... 8

6 Skip Cycle.................................................................................................................... 8

7 Forced PWM................................................................................................................. 8

8 Startup........................................................................................................................ 9

9 Loop Response.............................................................................................................. 9

10 Schematic (Power Block)................................................................................................. 10

11 Schematic (Control Block)................................................................................................ 11

12 Top Silk (Top View) ....................................................................................................... 12

13 Bottom Silk (X-Ray View) ................................................................................................ 12

14 Top Copper (Top View)................................................................................................... 13

15 Mid1 Copper (X-Ray View)............................................................................................... 13

16 Mid2 Copper (X-Ray View)............................................................................................... 14

17 Bottom Copper (X-Ray View)............................................................................................ 14

List of Tables

1 Electrical Performance Specifications.................................................................................... 4

2 Pin Descriptions............................................................................................................. 4

3 Bill of Materials............................................................................................................. 15

SNVU205–APRIL 2013 List of Figures

User's Guide

SNVU205–APRIL 2013

LM5122EVM-2PH Evaluation Module

1 Introduction

The LM5122EVM-2PH evaluation module (EVM) provides the design engineer with a fully functional dual

phase synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost

controller device. The EVM provides 28 V output at up to 7 A current from a 9 V to 20 V input. The EVM is

designed to start up from a single power supply without any additional bias voltage.

2 Features and Electrical Performance

• 9 V to 20 V input voltage range

• 28 V target output voltage

• Up to 7 A output current

• 250 kHz typical switching frequency

• Dual phase interleaved operation

Table 1. Electrical Performance Specifications

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Input Characteristics

Input Voltage 9 12 20 V

Input Current VSUPPLY = 12 V, ILOAD = 7A 17 A

Output Characteristics

Output Voltage ILOAD = 7A 27.02 28 28.98 V

Output Current 7 A

System Characteristics

Switching Frequency 250 kHz

Full Load Efficiency VSUPPLY = 12 V 96%

VSUPPLY = 20 V 98%

3 Test Points

3.1 Test Points

Table 2. Pin Descriptions

PIN NAME DESCRIPTIONS

TP7, TP8 Power Ground

TP5, TP9, TP10 Analog Ground

TP6 UVLO

J1#1 External Synchronization Pulse Positive Input

J1#2 External Synchronization Pulse Negative Input

4LM5122EVM-2PH Evaluation Module SNVU205–APRIL 2013

Submit Documentation Feedback

Oscilloscope

ACOM

Ampere Meter

Power Supply

Electronic Load

+- V

Voltage Meter

COM

-s +s

www.ti.com

Test Equipment

4 Test Equipment

4.1 Power Supply

Power Supply should be capable of 20 V / 25 A, current monitoring and remote sensing.

4.2 Electronic Load

Electronic load should be capable of 32 V / 7 A. Use Constant Current (CC) mode.

4.3 Meters

One current meter is required to measure input current accurately. Maximum current rating of the meter

should be carefully considered. Input current can be as high as 25 A at full load current and minimum

input voltage. Output voltage is monitored by a voltage meter which should be capable of monitoring up to

32 V.

4.4 Oscilloscope

Oscilloscope and 10x probe with at least 20 MHz bandwidth are required.

5 Test Setup and Procedure

Figure 1. Connection Diagram

5.1 Precaution & Wire Gauge

Prolonged operation with low input voltage at full power will cause heating of the MOSFETs. A fan with a

minimum of 200LFM should be always provided.

Wire gauge for the input power supply should be 6-8 AWG minimum and no longer than 1 foot each for

VIN and GND. Wire gauge for the output electronic load should be 12 AWG minimum and no longer than

1 foot each for VOUT and GND.

SNVU205–APRIL 2013 LM5122EVM-2PH Evaluation Module

100

0 2 4 6 8

EFFICIENCY [%]

LOAD CURRENT [A]

C001

FSW = 250 kHz

VOUT = 28V

VSUPPPLY = 20V

VSUPPLY = 9V

VSUPPLY = 12V

Performance Curves

www.ti.com

5.2 Test Setup

5.2.1 Power Supply

Connect the power supply’s positive terminal (+) to ‘A’ terminal of ampere meter and negative terminal (-)

to TP4 GND. Connect the power supply’s positive remote sense terminal to TP2 VIN and negative remote

sense terminal to TP4 GND.

5.2.2 Meter

Connect ‘COM’ terminal of ampere meter to TP2 VIN. Double check ‘A’ terminal is connected to the power

supply’s positive terminal.

Voltage meter is used to measure output voltage. Connect positive terminal (V) of the voltage meter to

TP1 VOUT and negative terminal (COM) of the voltage meter to TP3 GND.

5.2.3 Load

Connect electronic load’s positive terminal (+) to TP1 VOUT and negative terminal (-) to TP3 GND.

5.3 Quick Test Procedure

5.3.1 Startup

• Set load current to 0 A and turn the load on

• Set power supply current limit to 25 A

• Turn on the power supply and increase voltage slowly up to 20 V

• Increase load current slowly up to 7 A

5.3.2 Shutdown

• Turn off the load

• Decrease the input voltage down to 0 V

• Turn on the load and discharge output capacitor

6 Performance Curves

The following curves are presented for reference, the actual field data may differ from these curves. Actual

performance data can be affected by measurement techniques, equipment setting and environmental

variables.

6.1 Efficiency

Figure 2. Efficiency

6LM5122EVM-2PH Evaluation Module SNVU205–APRIL 2013

Submit Documentation Feedback

www.ti.com

Performance Curves

6.2 Load Transient

VSUPPLY = 12 V, 3.5 A to 7 A and 7 A to 3.5 A load transient

C1: VOUT

Figure 3. Load Transient

6.3 Interleaving

VSUPPLY = 12 V

C1: SW1, C2: SW2

Figure 4. Interleaving

SNVU205–APRIL 2013 LM5122EVM-2PH Evaluation Module

Performance Curves

www.ti.com

6.4 Light Load Operations

Forced PWM (FPWM) and Skip Cycle mode can be configured by controlling MODE pin voltage.

VSUPPLY = 12 V, ILOAD =0A

C1:SW1

Figure 5. Pulse Skip

C1: SW1

Figure 6. Skip Cycle

C1: SW1

Figure 7. Forced PWM

8LM5122EVM-2PH Evaluation Module SNVU205–APRIL 2013

Submit Documentation Feedback

-180

-135

-90

-45

135

180

-40

-30

-20

-10

100 1000 10000 100000

GAIN [dB]

FREQUENCY [Hz]

C002

PHASE

GAIN

VSUPPLY = 12V

LOAD

= 7.0A

PHASE [°]

www.ti.com

Performance Curves

6.5 Startup

VSUPPLY = 12 V, ILOAD =0A

C1: VOUT, C2: SS, C4: VSUPPLY

Figure 8. Startup

6.6 Loop Response

Figure 9. Loop Response

SNVU205–APRIL 2013 LM5122EVM-2PH Evaluation Module

Schematic

www.ti.com

7 Schematic

Figure 10. Schematic (Power Block)

10 LM5122EVM-2PH Evaluation Module SNVU205–APRIL 2013

Submit Documentation Feedback

Table des matières

Autres manuels Texas Instruments Unité de contrôle

Texas Instruments

Texas Instruments Stellaris LM3S818 Manuel utilisateur

Texas Instruments

Texas Instruments UCC28056EVM-296 Manuel utilisateur

Texas Instruments

Texas Instruments TPS54226EVM-539 Manuel utilisateur

Texas Instruments

Texas Instruments LMH9235RRL-EVM Manuel utilisateur

Texas Instruments

Texas Instruments TPS25200EVM-618 Manuel utilisateur

Texas Instruments

Texas Instruments AWR1642 Manuel utilisateur

Texas Instruments

Texas Instruments LP8864 Manuel utilisateur

Texas Instruments

Texas Instruments TPA6120A2RGY EVM Manuel utilisateur

Texas Instruments

Texas Instruments MCF8316AEVM Manuel utilisateur

Texas Instruments

Texas Instruments TMS320C6A816 Series Manuel du produit

Texas Instruments

Texas Instruments XIO2001 Manuel utilisateur

Texas Instruments

Texas Instruments TWL6032 Manuel utilisateur

Texas Instruments

Texas Instruments AWR1443 Manuel utilisateur

Texas Instruments

Texas Instruments TPS5430 Manuel utilisateur

Texas Instruments

Texas Instruments TPS7A8300EVM-209 Manuel utilisateur

Texas Instruments

Texas Instruments TPS23523EVM-863 Manuel utilisateur

Texas Instruments

Texas Instruments BoosterPack BOOST-IR Manuel utilisateur

Texas Instruments

Texas Instruments CC3000 Manuel utilisateur

Texas Instruments

Texas Instruments bq2022A Manuel utilisateur

Texas Instruments

Texas Instruments BIOSUSB Manuel utilisateur

Texas Instruments

Texas Instruments TLA2024EVM-PDK Manuel utilisateur

Texas Instruments

Texas Instruments ADS8555EVM-PDK Manuel utilisateur

Texas Instruments

Texas Instruments AWR1443 Manuel utilisateur

Texas Instruments

Texas Instruments TPS51220A EVM-476 Manuel utilisateur

Manuels Unité de contrôle populaires d'autres marques

Festo

Festo Compact Performance CP-FB6-E Manuel de la liste des pièces

Elo TouchSystems

Elo TouchSystems DMS-SA19P-EXTME Manuel utilisateur

JS Automation

JS Automation MPC3034A Manuel utilisateur

JAUDT

JAUDT SW GII 6406 Series Guide rapide

Spektrum

Spektrum Air Module System Manuel utilisateur

BOC Edwards

BOC Edwards Q Series Manuel utilisateur

KHADAS

KHADAS BT Magic Manuel utilisateur

Etherma

Etherma eNEXHO-IL Manuel utilisateur

PMFoundations

PMFoundations Attenuverter Manuel utilisateur

GEA

GEA VARIVENT Manuel utilisateur

Walther Systemtechnik

Walther Systemtechnik VMS-05 Manuel utilisateur

Altronix

Altronix LINQ8PD Instructions de montage

Eaton

Eaton Powerware Series Manuel utilisateur

WAGO

WAGO 750-407/040-000 Manuel utilisateur

Sony

Sony CCU-590 Manuel utilisateur

Graco

Graco 25D614 Manuel utilisateur

Task Force Tips

Task Force Tips YE-RF-900 Manuel de programmation

Shini

Shini SPV-U Series Manuel utilisateur