Texas Instruments TPS274C65CP Manuale utente

EVM User's Guide: TPS274C65CPEVM

TPS274C65CP Evaluation Module

Description

The Texas Instruments TPS274C65CPEVM is an

evaluation module that is used to demonstrate and

showcase all of the features of the underlying

TPS274C65 industrial high side switch. This

evaluation board provides a seamless way to connect

a set of power supplies to the inputs of the

TPS274C65, connect loads to the output channels,

and switch on and off the device using the control

pins of the chip itself, and easily assert and deassert

logic signals by the use of a set of external

hardware jumpers.. An on-board 3.3-V buck-converter

is included on the EVM to allow for external VDD.

Features

• On-board 3.3-V buck-converter allowing for

external VDD and lower device Iq

• Operating voltage 12 V-36 V

• Programmable current limit with external resistor

• Operating free-air temperature: –40 to 125°C

Applications

•Industrial PLC systems

–Digital output modules

– IOLink ports

– Sensor supplies

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TPS274C65CP Evaluation Module 1

1 Evaluation Module Overview

1.1 Introduction

The TPS274C65CP evaluation module is designed to evaluate the full performance and functionality of the

TPS274C65 high side switch. The TPS274C65CP evaluation module allows the user to isolate the TPS27465

before designing into a larger power system. The TPS274C65CPEVM is compatible with the CP version of

TPS274C65.

This user's guide provides the connectors and test point description, the schematic, bill of materials, and board

layout of the EVM.

Caution

Hot surface

Contact can cause burns

Do not touch!

1.2 Kit Contents

Kit Contents lists the contents of the EVM kit. Contact the Texas Instruments Product Information Center nearest

if any component is missing.

Table 1-1. Kit Contents

Item Quantity

TPS274C65CPEVM 1

1.3 Specification

This EVM is compatible with the TPS27C65CP device. There are other device versions for the TPS27C65 which

can be tested using the TPS27C65EVM. Table 1-2 shows the comparison across different device versions.

Please note that TPS274C65CPEVM supports version CP.

Table 1-2. Device Comparison Table

Device Version Part Number Interface

Reverse

Current

Blocking (RCB)

Integrated LED

Driver Integrated ADC Fault Diagnosis

CP TPS274C65CP GPIO Yes No No Per channel fault output

AS TPS274C65AS SPI Yes Yes Yes Global fault output and

single channel information

available through SPI

BS TPS274C65BS SPI No No No Global fault output and

single channel information

available through SPI

1.4 Device Information

The TPS274C65CP device is a quad-channel smart high-side switch designed to meet the requirements of

industrial control systems. Low 65 mΩ RDSON minimizes device power dissipation even when providing large

output load current. The device integrates protection and diagnostic features to verify system protection even

during harmful events, such as short circuits or load failures. The device protects against faults through a reliable

current limit, which is adjustable from 300 mA to 1.9 A to provide protection regardless of output load current.

The TPS274C65CP has an internal regulator to create voltage for internal rails. Additionally, a VDD pin is

provided to allow the use of external VDD supply, which needs be derived from the VS to reduce the power

dissipation. The comprehensive fault reporting include a dedicated VS_FLT pin to indicate the VS undervoltage,

and separate fault pin STx to indicate the faults happening in each channel. The TPS274C65CP is available in a

small 6 mm × 6 mm QFN package with 0.5 mm pin pitch, which minimizes PCB footprint.

Part Number Package Body Size (nom)

TPS274C65CP QFN (40) 6 mm × 6 mm

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2 Hardware

2.1 Jumper Information

Table 2-1 shows the relevant configuration jumpers of the TPS274C65CPEVM as well as the associated values.

Please refer to the TPS274C65CP data sheet for detailed information on the functionality of each pin.

Note

If the ground network is used (J12 unpopulated), then an external VDD needs to be used at a voltage

greater than 4 V due to the ground shift and minimum VDD undervoltage lockout threshold.

Note

Please note that a white mark on the jumper silkscreen is reflecting the position 1 of the jumper.

Table 2-1. Jumper Configurations

Jumper Function/Settings

J10 Connect to pull the REG_EN signal low.

J11

Connect to use the external 3.3V rail generated by the on-board buck converter to power the VDD of the

device. Connecting this jumper lowers the quiescent current used by the device in comparison to when the

internal VDD is used.

J12 Connect to override.

the ground network and connect IC ground to module ground.

J13 Connect 1 and 2 to power EN1 with VDD Connect 2 and 3 to pull EN1 low.

J14 Connect 1 and 2 to power EN2 with VDD Connect 2 and 3 to pull EN2 low.

J15 Connect 1 and 2 to power EN3 with VDD Connect 2 and 3 to pull EN3 low.

J16 Connect 1 and 2 to power EN4 with VDD Connect 2 and 3 to pull EN4 low.

J17 Connect 1 and 2 to pull LATCH HI to configure the device in latch (on fault) mode Connect 2 and 3 to pull

LATCH LO to configure device in auto-retry on fault.

J18 Connect 1 and 2 to pull DIAG_EN HI to enable diagnostic reporting Connect 2 and 3 to disable.

Diagnostic reporting.

Please refer to Table 2-2 for ILIM DIP switch configuration.

Table 2-2. ILIM DIP Switch Configurations

DIP Switch Position Resistor Value ILIM

Threshold typ

(A)

1 110 kΩ 1.9

2 78.7 kΩ 1.6

3 59 kΩ 1.25

4 44.2 kΩ 1

5 31.6 kΩ 0.72

6 23.7 kΩ 0.56

7 17.8 kΩ 0.4

8 13.3 kΩ 0.25

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TPS274C65CP Evaluation Module 3

2.2 Test Points

Table 2-3 shows the test points populated on the board as well as the signal connectors.

Table 2-3. Connections and Test Points

Connector and Test Point Description

J2, TP1 Supply Voltage VS.

J3, TP2 VDD voltage. Connect a supply if internal VDD is not used.

J4, TP3 Output voltage 1 (VOUT1).

J6, TP7 Output voltage 2 (VOUT2).

J7, TP9 Output voltage 3 (VOUT3).

J8, TP13 Output voltage 4 (VOUT4).

TP4, TP5, TP6, TP8, TP10, TP15,

TP25, TP26, TP26, TP28, J5, J9 Ground.

TP11 ST1 Signal.

TP12 ST2 Signal.

TP17 ST3 Signal.

TP18 ST4 Signal.

TP14 REG_EN Signal.

TP16 DIA_EN Signal.

TP19 Latch Signal.

TP24 FAULT Signal.

TP20 EN1 Signal.

TP21 EN2 Signal.

TP22 EN3 Signal.

TP23 EN4 Signal.

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3 Hardware Design Files

3.1 Schematics

Figure 3-1. TPS274C65CPEVM Schematic

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TPS274C65CP Evaluation Module 5

3.2 PCB Layouts

Figure 3-2. 3D Representation

Figure 3-3. Top Layer

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Figure 3-4. Ground Layer

Figure 3-5. Power Layer

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TPS274C65CP Evaluation Module 7

Figure 3-6. Bottom Layer

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3.3 Bill of Materials (BOM)

Table 3-1. Bill of Materials

Designator Value Description Package Reference Part Number Manufacturer

C1 0.1uF CAP, CERM, 0.1 uF, 50 V, +/-

10%, X7R, 0603 0603 C1608X7R1H104K080AA TDK

C2 0.1uF CAP, CERM, 0.1 uF, 100 V, +/-

10%, X7R, 0805 0805 C0805C104K1RACTU Kemet

C3 2.2uF CAP, CERM, 2.2 uF, 100 V, +/-

10%, X7R, 1210 1210 C1210C225K1RACTU Kemet

C4, C5 22uF CAP, CERM, 22 uF, 10 V, +/-

10%, X7R, 1206 1206 GRM31CR71A226KE15L MuRata

C6 1uF CAP, CERM, 1 uF, 100 V, +/-

10%, X7R, 1210 1210 C3225X7R2A105K200AA TDK

C7 2.2uF

CAP, CERM, 2.2 uF, 50 V, +/-

10%, X7R, AEC-Q200 Grade

1, 0805

0805 CGA4J3X7R1H225K125AB TDK

C8 4700 pF

CAP, CERM, 4700 pF, 100

V, +/- 10%, X7R, AEC-Q200

Grade 1, 0603

0603 CGA3E2X7R2A472K080AA TDK

C9 0.1uF

CAP, CERM, 0.1 uF, 100 V,+/-

10%, X7R, AEC-Q200 Grade

1, 0603

0603 GCJ188R72A104KA01D MuRata

C10, C11, C12,

C13 0.022uF

CAP, CERM, 0.022 uF, 100

V, +/- 10%, X7R, AEC-Q200

Grade 1, 0603

0603 CGA3E2X7R2A223K080AA TDK

D1, D3 200 V Diode, Switching, 200 V, 0.2 A,

SOT-23 SOT-23 BAS21-7-F Diodes Inc.

D2 36 V Diode, TVS, Uni, 36 V, 58.1

Vc, SMB SMB SMBJ36A-13-F Diodes Inc.

H1, H2, H3, H4 Machine Screw, Round, #4-40

x 1/4, Nylon, Philips panhead Screw NY PMS 440 0025 PH B&F Fastener Supply

H5, H6, H7, H8 Standoff, Hex, 0.5"L #4-40

Nylon Standoff 1902C Keystone

J1, J13, J14,

J15, J16, J17,

J18

Header, 2.54mm, 3x1, Gold,

Header, 2.54mm,

3x1, TH HMTSW-103-07-G-S-240 Samtec

J2, J3, J4, J6,

J7, J8

Standard Banana Jack,

insulated, 10 A, red 571-0500 571-0500 DEM Manufacturing

J5, J9 Standard Banana Jack,

insulated, 10 A, black 571-0100 571-0100 DEM Manufacturing

J10, J11, J12 Header, 100mil, 2x1, Gold, TH Header, 2.54mm,

2x1, TH HMTSW-102-07-G-S-240 Samtec

L1 15uH

Inductor, Shielded Drum Core,

Ferrite, 15 uH, 1.1 A, 0.08

ohm, SMD

SMD, 2-Leads,

Body 6.8x6.8mm 744062150 Wurth Elektronik

R1, R2, R7, R8,

R15, R26 4.7k RES, 4.7 k, 5%, 0.1 W, AEC-

Q200 Grade 0, 0603 0603 ERJ-3GEYJ472V Panasonic

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TPS274C65CP Evaluation Module 9

Table 3-1. Bill of Materials (continued)

Designator Value Description Package Reference Part Number Manufacturer

R3, R4, R5, R6,

R9, R10, R11,

R12, R13, R14,

R16, R17

7.50k RES, 7.50 k, 1%, 0.1 W, 0603 0603 ERJ-3EKF7501V Panasonic

R18 13.3k RES, 13.3 k, 1%, 0.1 W, AEC-

Q200 Grade 0, 0402 0402 ERJ-2RKF1332X Panasonic

R19 17.8k RES, 17.8 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW040217K8FKED Vishay-Dale

R20 23.7k RES, 23.7 k, 1%, 0.1 W, AEC-

Q200 Grade 0, 0402 0402 ERJ-2RKF2372X Panasonic

R21 31.6k RES, 31.6 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW040231K6FKED Vishay-Dale

R22 44.2k RES, 44.2 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW040244K2FKED Vishay-Dale

R23 59.0k RES, 59.0 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW040259K0FKED Vishay-Dale

R24 78.7k RES, 78.7 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW040278K7FKED Vishay-Dale

R25 110k RES, 110 k, 1%, 0.063 W,

AEC-Q200 Grade 0, 0402 0402 CRCW0402110KFKED Vishay-Dale

SH-J1, SH-J2,

SH-J3, SH-J4,

SH-J5, SH-J6,

SH-J7, SH-J8,

SH-J9, SH-J10

1x2 Shunt, 100mil, Gold plated,

Black Shunt SNT-100-BK-G Samtec

SW1

Dip Switch SPST 8 Position

Through Hole Slide (Standard)

Actuator 10 mA 5VDC

DIP8 STV08 TE Connectivity

TP1, TP2, TP3,

TP7, TP9, TP13

Test Point, Multipurpose, Red,

Red Multipurpose

Testpoint 5010 Keystone Electronics

TP4, TP5, TP6,

TP8, TP10,

TP15, TP25,

TP26, TP27,

TP28

Test Point, Multipurpose,

Black, TH

Black Multipurpose

Testpoint 5011 Keystone Electronics

TP11, TP12,

TP14, TP16,

TP17, TP18,

TP19, TP20,

TP21, TP22,

TP23, TP24

Test Point, Multipurpose,

Green, TH

Green Multipurpose

Testpoint 5126 Keystone Electronics

LMR36503/06-Q1 Wide Input

60-V Synchronous, DC-DC

Buck Converter, RPE0009A

(VQFN-9)

RPE0009A LMR36506R3RPET Texas Instruments

65-mΩ Quad-Channel Smart

High-Side Switch with

Diagnostics

VQFN40 TPS274C65CPWRHAR Texas Instruments

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