Texas Instruments TPS568236 Manuel utilisateur

EVM User's Guide: TPS568236EVM

TPS568236 Step-Down Converter Evaluation Module

Description

The TPS568236 is a single, D-CAP3™ control mode,

synchronous buck converter requiring a very low

external component count. TPS568236EVM is a

fully assembled and tested circuit for evaluating the

TPS568236 converter. This EVM operates typical 12-

V input, and provides a 5.1-V output at 8-A.

Features

• 4.5-V to 18-V input voltage range

• 0.6-V to 5.5-V output voltage range

• Support 8-A continuous output current

• Selectable PSM and FCCM mode under light load

• Fast load transient response

Applications

• Digital TV, set-top box, gaming consoles

• Server, storage and networking point-of-load

• Industrial PC and factory automation applications

• Distributed power systems with typical 5-V, 12-V,

15-V input

Top View of TPS568236EVM

www.ti.com Description

SLUUCX4 – AUGUST 2023

Submit Document Feedback

TPS568236 Step-Down Converter Evaluation Module 1

1 Evaluation Module Overview

1.1 Introduction

The TPS568236 evaluation module (EVM) is a single, synchronous buck converter providing 5.1-V at 8-A from a

6-V to 18-V input. This user’s guide describes the TPS568236EVM performance.

Table 1-1. Input Voltage and Output Current Summary

EVM Input Voltage (VIN) Range Output Current (IOUT) Range

TPS568236EVM 6 V to 18 V 0 A to 8 A

This user's guide describes the characteristics, operation, and use of the Texas Instruments TPS568236

evaluation module (EVM). The TPS568236EVM is designed to help user easily evaluate and test the operation

and functionality of the TPS568236. This user's guide includes the following:

• Setup instructions for the hardware

• Printed-circuit board layouts for the EVM

• Schematic diagram

• Bills of material

• Test results for the EVM

1.2 Kit Contents

• One TPS568236EVM board

• EVM disclaimer Read Me

1.3 Specification

A summary of the TPS568236EVM performance specifications is provided in Table 1-2. Specifications are given

for 12-V input voltage and 5.1-V output voltage, unless otherwise noted. The ambient temperature is 25°C for all

measurement, unless otherwise noted.

Table 1-2. TPS568236EVM Performance Specifications Summary

Specifications Test Conditions MIN TYP MAX Unit

VIN Input voltage 6 12 18 V

CH1

Output voltage 5.1 V

Operating frequency VIN = 12 V, IOUT = 8 A 600 kHz

Output current range 0 8 A

Overcurrent limit VIN = 12 V, LOUT = 1.5 µH 11 A

Output ripple voltage VIN = 12 V, IOUT = 8 A 30 mVPP

1.4 Device Information

TPS568236 is the main device on the EVM board. The TPS568236 is a single, D-CAP3™ control mode,

synchronous buck converter requiring a very low external component count. Features include an accurate

reference voltage, fast load transient response, auto-skip mode operation for light load efficiency, FCCM light

load operation with > 25-kHz switching frequency, D-CAP3 control mode with good line, load regulation, and

does not require external compensation.

Evaluation Module Overview www.ti.com

2TPS568236 Step-Down Converter Evaluation Module SLUUCX4 – AUGUST 2023

Submit Document Feedback

2 Hardware

2.1 Input and Output Connections

The TPS568236EVM is provided with input and output connectors and test points as shown in Table 2-1. Test

point TP2 provides a place to monitor the VIN input voltages with TP9 providing a convenient ground reference.

TP5 is used to monitor the output voltage with TP12 as the ground reference.

Table 2-1. Connection and Test Points

Reference

Designator Function

J1 VIN (see Table 1-1 for VIN range)

J2 VOUT, 5.1 V at 8-A maximum

JP1 PG pullup control. Short pin 1 and pin 2 to pull PG up to VCC.

JP2 EN high control. Short pin 1 and pin 2 to connect VIN to pin 1 of JP3.

JP3 EN control. Short pin 1 and pin 2 of JP2 to make EN high.

JP4 Mode control. Float or short pin 2 and pin 3 to set PSM mode. Short pin 2 and

pin 1 to set FCCM mode.

TP1 VIN positive monitor point

TP2 VIN positive test point

TP3 Switch node (SW) test point

TP4 VOUT positive monitor point

TP5 VOUT positive test point

TP6 EN test point

TP7 PG test point

TP8 GND monitor point

TP9 GND test point

TP10 GND monitor point

TP11 Loop test point

TP12 GND test point

TP13 VCC test point

TP14, TP15, TP16 GND test point

2.2 Modifications

The evaluation module is designed to provide access to the features of the TPS568236. Some modifications can

be made to this module.

2.2.1 Output Voltage Setpoint

To change the output voltage of the EVM, change the value of resistor R4 (Rupper) and R6 (Rlower). The value of

R4 and R6 for a specific output voltage can be calculated using Equation 1.

)

1(6.0V

LOWER

UPPER

OUT u

(1)

2.2.2 Mode Selection

TPS568236 has a MODE pin that can offer two different options of light load performance, as shown in Table

2-2.

Table 2-2. MODE Pin Settings

MODE Pin Light Load Performance

Connect Pin2(MODE) to Pin3(L) of JP4 or leave MODE pin floating PSM

Connect Pin2(MODE) to Pin1(H) of JP4 FCCM

www.ti.com Hardware

SLUUCX4 – AUGUST 2023

Submit Document Feedback

TPS568236 Step-Down Converter Evaluation Module 3

3 Implementation Results

This section describes how to properly connect, set up, and use the TPS568236EVM. The section also includes

test results typical for the evaluation modules.

3.1 Evaluation Setup

1. Make sure that the jumper at JP2 (Enable High Control) is covered to connect VIN to pin 1 of JP3. Also

make sure JP3 (Enable Control) pin 2 and 3 are covered to shunt EN to GND to disable the output.

2. Apply appropriate input voltage to VIN (J1-1) or TP1 and GND (J1-2) or TP8. Connect a power supply

capable of supplying 8-A to J1 through a pair of 20AWG wires. Note that the board cannot support hot

plug-in. The input lines must be connected between J1 and an external power source first before turning on

the power source.

3. Move the jumper at JP3 (Enable Control) from pin 2 and 3 (EN and OFF) to pin 2 and 1 (EN and ON) and

make sure JP2 pin 1 and pin 2 are covered. Then, the output can be enabled.

4. Apply the loading to VOUT (J2-2) or TP4 and GND (J2-1) or TP10. The load must be connected to J2

through a pair of 20AWG wires. The maximum load current capability is 8 A. Minimize wire lengths to reduce

losses in the wires.

3.2 Test Setup and Results

3.2.1 Start-Up

The following figures show the TPS568236EVM start-up waveform relative to EN.

VOUT=2V/div

PG=5V/div

IL=2A/div

EN=5V/div

Figure 3-1. Start-Up Relative to EN, IOUT = 0.1 A (2ms/div)

Implementation Results www.ti.com

4TPS568236 Step-Down Converter Evaluation Module SLUUCX4 – AUGUST 2023

Submit Document Feedback

VOUT=2V/div

PG=5V/div

IL=5A/div

EN=5V/div

Figure 3-2. Start-Up Relative to EN, IOUT = 8 A (2ms/div)

3.2.2 Shutdown

The following figures show the TPS568236EVM shutdown waveform relative to EN.

VOUT=2V/div

PG=5V/div

IL=2A/div

EN=5V/div

Figure 3-3. Shutdown Relative to EN, IOUT = 0.1 A (2ms/div)

VOUT=2V/div

PG=5V/div

IL=5A/div

EN=5V/div

Figure 3-4. Shutdown Relative to EN, IOUT = 8 A (2ms/div)

www.ti.com Implementation Results

SLUUCX4 – AUGUST 2023

Submit Document Feedback

TPS568236 Step-Down Converter Evaluation Module 5

3.2.3 Output Voltage Ripple

The following images show the TPS568236EVM output voltage ripple.

VOUT=20mV/div (AC coupled)

SW=5V/div

Figure 3-5. TPS568236EVM Output Voltage Ripple, IOUT = 10 mA, PSM Mode (100us/div)

VOUT=20mV/div (AC coupled)

SW=5V/div

Figure 3-6. TPS568236EVM Output Voltage Ripple, IOUT = 10 mA, FCCM Mode (1us/div)

VOUT=20mV/div (AC coupled)

SW=5V/div

Figure 3-7. TPS568236EVM Output Voltage Ripple, IOUT = 8 A (1us/div)

Implementation Results www.ti.com

6TPS568236 Step-Down Converter Evaluation Module SLUUCX4 – AUGUST 2023

Submit Document Feedback

4 Hardware Design Files

4.1 Schematic

The following image shows the schematic for the TPS568236EVM.

Figure 4-1. TPS568236EVM Schematic Diagram

www.ti.com Hardware Design Files

SLUUCX4 – AUGUST 2023

Submit Document Feedback

TPS568236 Step-Down Converter Evaluation Module 7

4.2 PCB Layout

The following figures show the board layout for the TPS568236EVM. TPS568236EVM is with four layers. The

top layer contains the main power traces for VIN, VOUT, and GND. Also on the top layer are connections for the

pins of the TPS568236 and a large area filled with ground. Most of the signal traces are also located on the top

side. The input decoupling capacitors C4, C5, and C6 are located as close to VIN pins and PGND pins of the IC

as possible. The input and output connectors, test points, and all of the components are located on the top side.

The bottom layer is a ground plane along with signal ground copper fill and the feedback trace from the point of

regulation to the top of the resistor divider network. Two inner layers are ground plane.

Figure 4-2. Top Assembly

Figure 4-3. Top Layer

Hardware Design Files www.ti.com

8TPS568236 Step-Down Converter Evaluation Module SLUUCX4 – AUGUST 2023

Submit Document Feedback

Figure 4-4. Inner1 Layer

Figure 4-5. Inner2 Layer

Figure 4-6. Bottom Layer

www.ti.com Hardware Design Files

SLUUCX4 – AUGUST 2023

Submit Document Feedback

TPS568236 Step-Down Converter Evaluation Module 9

4.3 Bill of Materials

The following table displays the TPS568236EVM bill of materials.

Table 4-1. Bill of Materials

Designator Qty Description Part Number Manufacturer(1)

C1, C6 2 CAP, CERM, 0.1 µF, 25 V, ±10%, X5R, 0603 CL10A104KA8NNNC Samsung Electro-

Mechanics

C4, C5 2 CAP, CERM, 10 μF, 35 V, ±10%, X5R, 0805 GRM21BR6YA106KE43L MuRata

C7, C8, C9,

C10 4 CAP, CERM, 22 μF, 10 V, ±20%, X5R, 0805 GRM21BR61A226ME44L MuRata

C12 1 CAP, CERM, 22 pF, 50 V, ±5%, C0G/NP0, 0603 C0603C220J5GACTU Kemet

C13 1 CAP, CERM, 1 μF, 10 V, ±10%, X5R, 0603 C0603C105K8PACTU Kemet

C14 1 CAP, CERM, 0.022 μF, 16 V, ±10%, X7R, 0603 C0603C220J5GACTU Kemet

C15 1 CAP, CERM, 0.01 μF, 16 V, ±10%, X7R, 0603 C0603C103K4RACTU Kemet

D1 1 Diode, Zener, 5.1 V, 200 mW, SOD-323 MMSZ5231BS-7-F Diodes Inc.

H1, H2, H3,

H4 4 Bumpon, Hemisphere, 0.44 × 0.20, Clear SJ-5303 (CLEAR) 3M

J1, J2 2 Terminal Block, 5.08 mm, 2 × 1, Brass, TH ED120/2DS On-Shore Technology

JP1, JP2 2 Header, 100mil, 2 × 1, Gold, TH PBC02SAAN Sullins Connector Solutions

JP3, JP4 2 Header, 100mil, 3 × 1, Tin, TH PEC03SAAN Sullins Connector Solutions

L1 1 Inductor, 1.5 μH, 11 A, 0.0089 Ω, SMD CMLE063T-1R5MS Cyntec

LBL1 1 Thermal Transfer Printable Labels, 1.250" W × 0.250" H

– 10,000 per roll THT-13-457-10 Brady

R1, R5 2 RES, 0, 5%, 0.1 W, 0603 RC0603JR-070RL Yageo

R2 1 RES, 51, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060351R0JNEA Vishay-Dale

R3 1 RES, 100 k, 5%, 0.1 W, 0603 CRCW0603100KJNEAC Vishay-Dale

R4 1 RES, 150 k, 1%, 0.1 W, 0603 RC0603FR-07150KL Yageo

R6 1 RES, 20.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 ERJ-3EKF2002V Panasonic

R7, R8, R9 3 RES, 20.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060320K0FKEA Vishay-Dale

SH-JP1, SH-

JP2, SH-JP3,

SH-JP4

4 Shunt, 100 mil, Gold plated, Black SNT-100-BK-G Samtec

TP1, TP4,

TP8, TP10 4 Terminal, Turret, TH, Triple 1598-2 Keystone

TP2, TP3,

TP5, TP6,

TP7, TP11,

TP13

7 Test Point, Miniature, Red, TH 5000 Keystone

TP9, TP12,

TP14, TP15,

TP16

5 Test Point, Miniature, Black, TH 5001 Keystone

U1 1 4.5-V to 18-V Input, 8-A Synchronous Buck Converter TPS568236RJNR Texas Instruments

C2, C3 0 CAP, CERM, 10 μF, 35 V, ±10%, X5R, 0805 GRM21BR6YA106KE43L MuRata

C11 0 CAP, CERM, 22 μF, 10 V, ±20%, X5R, 0805 GRM21BR61A226ME44L MuRata

(1) Unless otherwise noted in the Alternate Part Number or Alternate Manufacturer columns, all parts can be substituted with equivalents.

Hardware Design Files www.ti.com

10 TPS568236 Step-Down Converter Evaluation Module SLUUCX4 – AUGUST 2023

Submit Document Feedback

Ce manuel convient aux modèles suivants

Table des matières

Autres manuels Texas Instruments Unité de contrôle

Texas Instruments

Texas Instruments CC256xEM Manuel utilisateur

Texas Instruments

Texas Instruments DRV8601 Manuel utilisateur

Texas Instruments

Texas Instruments S6350 Manuel utilisateur

Texas Instruments

Texas Instruments SN65HVD257 Manuel utilisateur

Texas Instruments

Texas Instruments SN65LVDS387EVM Manuel utilisateur

Texas Instruments

Texas Instruments DAC38RF8xEVM Series Manuel utilisateur

Texas Instruments

Texas Instruments TPS92410EVM-001 Manuel utilisateur

Texas Instruments

Texas Instruments LM5170-Q1 EVM Manuel utilisateur

Texas Instruments

Texas Instruments TPS254900AQ1EVM-003 Manuel utilisateur

Texas Instruments

Texas Instruments bq34210-Q1 Manuel du produit

Texas Instruments

Texas Instruments LP-MSPM0C1104 Manuel utilisateur

Texas Instruments

Texas Instruments TPS65912xEVM-081 Mode d'emploi

Texas Instruments

Texas Instruments LM76005QEVM Manuel utilisateur

Texas Instruments

Texas Instruments TUSB216EVM Manuel utilisateur

Texas Instruments

Texas Instruments TLV320AIC3109EVM-K Manuel utilisateur

Texas Instruments

Texas Instruments DLP LightCrafter 3010 Gen2 Manuel utilisateur

Texas Instruments

Texas Instruments TPS61020EVM Manuel utilisateur

Texas Instruments

Texas Instruments VCA5807 Manuel utilisateur

Texas Instruments

Texas Instruments TRF3750 Series Manuel utilisateur

Texas Instruments

Texas Instruments TLA2024EVM-PDK Manuel utilisateur

Texas Instruments

Texas Instruments bq20z65EVM-001 Manuel utilisateur

Texas Instruments

Texas Instruments TPS54672EVM-222 Manuel utilisateur

Texas Instruments

Texas Instruments BQ24180 Manuel utilisateur

Texas Instruments

Texas Instruments LM5123EVM-BST 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