Texas Instruments TPS25200EVM-618 User Manual

User's Guide

SLVUA53A–March 2014–Revised April 2014

TPS25200EVM-618 Evaluation Module for TPS25200

This user’s guide describes the evaluation module (EVM) for the TPS25200 (TPS25200EVM-618).
TPS25200 is an adjustable current-limited power distribution switch with input overvoltage protection and
output overvoltage clamp.

Contents

1 Introduction ................................................................................................................... 2

2 Description.................................................................................................................... 2

3 Schematic..................................................................................................................... 3

4 General Configuration and Description ................................................................................... 4

5 EVM Assembly Drawings and Layout Guidelines ....................................................................... 6

6 Bill of Materials............................................................................................................... 7

List of Figures

1 TPS25200EVM-618 Schematic............................................................................................ 3

2 Typical TPS25200EVM-618 Test Setup.................................................................................. 5

3 Top Side Placement......................................................................................................... 6

4 Top Side Routing ............................................................................................................ 6

5 Bottom Side Routing ........................................................................................................ 6

List of Tables

1 Connector Functionality..................................................................................................... 4

2 Test Points.................................................................................................................... 4

3 Jumpers and LEDs .......................................................................................................... 4

4 TPS25200EVM-618 Bill of Materials ..................................................................................... 7

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Introduction

1 Introduction

The TPS25200EVM-618 allows reference circuit evaluation of the TPS25200 power distribution switch
with adjustable current limit, input overvoltage protection, and an output overvoltage clamp.

1.1 Features

• TPS25200 features
– 2.5- to 6.5-V operation
– Withstands up to 20-V input voltage
– 7.2-V fixed input overvoltage protection
– 5.4-V fixed output voltage clamp
– 0.9-μs overvoltage protection response
– 2-μs overcurrent response
– Integrated 60-mΩ high-side MOSFET
– Up to 2.5-A continuous load current
– ±6% current-limit accuracy at 2.8 A
– Reverse current blocking when disabled
– Build-in soft start
– Pin-to-pin compatible with TPS2553 device

• Dual input voltages with pushbutton input overvoltage test circuit

• Selectable current limits (three level)

• Selectable output capacitors (four level)

• Test point selectable I/O voltage source for EN and FAULTx

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1.2 Applications

• USB ports and hubs

• Digital TV

• Set-top boxes

• VOIP phones

• USB portable devices

• Solid state drives (SSD)

2 Description

TPS25200EVM-618 enables full evaluation of the TPS25200 power distribution switch with adjustable
current limit, input overvoltage protection, and an output overvoltage clamp.

Referring to the schematic shown in Figure 1, primary input power is applied at J5/J7 while J6/J7 provides
the output connection to the load. C4/C5 provides input protection for the TPS25200 (U1) while C1 and
the J4 selectable output capacitance provide output protection. J3 allows three levels of current limit to be
selected. J2 allows selection of the EN/FAULTx pullup voltage source to come from either the IN or an
external source (VCC_IO source from TP11).

The overvoltage protection feature of the TPS25200 device can be evaluated through the use of a
secondary (higher voltage) source connected to TP10. The effects of this overvoltage pulse can be
evaluated by using the S1 pushbutton.

2

TPS25200EVM-618 Evaluation Module for TPS25200 SLVUA53A–March 2014–Revised April 2014

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J7

J5

J6

TP4

TP8

TP6

TP1

TP3

TP7

TP9

ILIM

IN

COMMON GROUND

VIN

EN

ENABLE

1
2
3

J3

ILIM LO

ILIM HI

VOUT

VIN = 2.5 to 6.5 V
IIN = 75 mA to 2.5 A

VOUT = 2.5 to 5.4 V

IOUT = 75 mA to 2.5A

TP2

FLTx

TP5

S1

1

2

J1

10 µF

C2

10 µF

C4

1234567

8

J4

1
2

J8

332 kΩ

R3

332 kΩ

R2

10 µF

C7

47 µF

C9

22 µF

C8

OUT

1

ILIM

2

FAULT

3

EN

4

GND

5

IN

6

PAD

U1

TPS25200DRV

100 V

D1

V8P10-M3/86A

0.1 Ω

R1

TP10

VIN 0 V

80.6 kΩ

R5

2.8 A

1.1 A

OVP VIN (20 V Max)

OVP TEST

123

J2 VCC IO (7 V Max)

TP11

SH-J2

SH-J4

SH-J3

SH-J1

D1 SHORT

COUT

47 µF

C11

47 µF

C10

47 µF

C3

0.2 Ω

R6

0.1 µF

C1

0.1 µF

C5

IN

EN

FLTx

OUT

ILIM

33.2 kΩ

R4

150 µF

C6

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Schematic

3 Schematic

Figure 1. TPS25200EVM-618 Schematic

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General Configuration and Description

4 General Configuration and Description

4.1 Physical Access

Table 1 lists the TPS25200EVM-618 connector functionality, Table 2 describes the test point availability,

and Table 3 describes the jumper functionality.

Table 1. Connector Functionality

Connector Label Description

J5/J7 VIN/GND 2.5- to 6.5-V primary input to the EVM
TP10 VIN_OV 2.5- to 20-V HV test voltage input to the EVM
J6/J7 VOUT/GND 2.5- to 5.4-V output from the EVM

S1 S1 S1 is used to pulse test the OVP feature

Table 2. Test Points

Test Point Color Label Description

TP4/TP8/TP7 RED/BLK/SM VIN/GND 2.5- to 6.5-V primary input to the EVM

TP6/TP9 RED/SM VOUT/GND 2.5- to 5.4-V output from the EVM

TP5 ORG IN 2.5- to 6.5-V input to the TPS25200

TP11 ORG VCC IO 2.5- to 6.5-V pullup source for EN and FAULTx

TP1 WHT EN Active high enable input
TP2 WHT FLT Fault test point
TP3 WHT ILIM TPS25200 ILIM pin voltage

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Table 3. Jumpers and LEDs

Jumper Label Description

J1 J1

J2 J2 to the IN pin. When the shunt is in the IO position, then an external IO source should be

J3 ILIM
J4 COUT Select the desired output capacitance using a shunt on J4 per the schematic diagram.

J8 EN Remove the shunt to enable the TPS25200 and install the shunt to disable.

Install between pins 1 and 2 to short out D1 (for normal operation). Remove when testing the
OVP feature using S1.

Select the desired EN and FLT pullup resistor supply source using a shunt on J2 per the
schematic diagram. When the shunt is in the IN position, then the pullup source is connected

connected between TP11 and J7 (or another GND test point). For extended high voltage
pulse testing, use the IO position with a supply voltage below 7 V.

Select the desired current limit using a shunt on J3 per the schematic diagram. When the
shunt is removed, the current limit is approximately 850 mA.

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TPS25200EVM-618 Evaluation Module for TPS25200 SLVUA53A–March 2014–Revised April 2014

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Positive

Voltmeter

PRINT
HELP

ALPHA

SHIFT

ENTER

RUN

DGERF

I

AJBKC

L

7M8N9

O

DGDGD

G

D

G T3U

0V.WX

Y

Z

TAB

% UTILIZATION

HUB/MAU NIC

2

BNC
4Mb/s

Oscilloscope

Power

Supply

Negative

DUT

PWR618

J5 J6

J7

J3

S1

Positive

Load

Negative

HI

LO

Positive

TP4

TP5

TP6

TP8

TP9

TP2

TP7

TP10

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4.2 Test Setup

Figure 2 shows a typical test setup for TPS25200EVM-618. Connect J5 to the primary power supply,

TP10 to the HV power supply, and J6 to the load. J7 is the common return for J5, J6, and TP10.

General Configuration and Description

Figure 2. Typical TPS25200EVM-618 Test Setup

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