Texas instruments TPS25821, TPS25820 User Manual

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TPS25820 and TPS25821 Evaluation Module

User's Guide

Literature Number: SLVUAZ3A

September 2017–Revised November 2019

Contents

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

2 Schematic........................................................................................................................... 5

3 Test Points.......................................................................................................................... 6

4 Powering Up the EVM........................................................................................................... 7

4.1 Measuring TPS25820 Device Power Consumption ................................................................. 7

5 Enabling and Configuring the TPS25820................................................................................. 8

5.1 Enabling and Disabling the TPS25820................................................................................ 8

5.2 Configuring the Broadcasted Current Limit for the TPS25820 Device............................................ 8

6 TPS25820/21EVM Features.................................................................................................... 9

6.1 No Connection on the EVM .......................................................................................... 10

6.2 Connecting a Source (SRC) Device.................................................................................. 10

6.3 Connecting a Sink (SNK) Device .................................................................................... 10

6.4 Connecting a Full-Featured USB Type-C™ Cable ................................................................ 11

6.5 Legacy Charging Support ............................................................................................. 11

7 TPS25820/21EVM Output Signals LEDs Operation.................................................................. 12

7.1 FAULT Detected (FAULT# LED) ..................................................................................... 12

7.2 Sink (SNK) device attached Detected (UFP# LED)................................................................ 12

7.3 Flipped USB Type-C™ Cable Detected (POL# LED).............................................................. 12

8 TPS25820 EVM Board Layout............................................................................................... 13

9 Bill of Materials .................................................................................................................. 16

10 PCB Layout Recommendations............................................................................................ 17

11 Trademarks ....................................................................................................................... 17

Revision History.......................................................................................................................... 17

Table of Contents

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1 TPS25820/21EVM........................................................................................................... 4

2 TPS25820 EVM Schematic ................................................................................................ 5

3 Test Points.................................................................................................................... 6

4 Choosing the Right Power Source ........................................................................................ 7

5 Connecting the Ammeter to IN1 Pin and Pre-Selected Power Source ............................................... 8

6 How to Enable and Disable TPS25820 Device on the EVM........................................................... 8

7 Jumper J6 Setting for Each Broadcasted Current Level ............................................................... 9

8 Schematic Showing How CC1 and CC2 are Connected to Jumpers J9 and J10 .................................. 9

9 Simulating a Sink (SNK) Device Connected to TPS25820/21EVM.................................................. 10

10 Connecting a Full-Featured USB Type-C™ Cable to TPS25820/21EVM.......................................... 11

11 Schematic of TPS2514A Device Section ............................................................................... 11

12 Top Silkscreen.............................................................................................................. 13

13 Top Solder Mask ........................................................................................................... 13

14 Top Layer.................................................................................................................... 14

15 Bottom Layer................................................................................................................ 14

16 Top Assembly............................................................................................................... 15

1 Test Points.................................................................................................................... 6

2 TPS25820 Responses Based on Port Connection Type ............................................................. 12

List of Figures

List of Tables

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List of Figures

User's Guide

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TPS25820 and TPS25821 Evaluation Module

This user’s guide is for the TPS25820 and TPS25821 Evaluation Modules (hereafter referred to as TPS25820/21EVM) and explains how to get up and running with the TPS25820/21EVM. The EVM allows the user to test specific features of the TPS25820 device by lighting-up signals LEDs and measuring test points voltages to demonstrate what happens when different types of USB Type-C™ devices are attached to the USB Type-C port on the EVM. Note that this EVM does not support BC1.2 charging. A TPS2514A can be added to DP and DM lines of the USB Type-C connector for BC1.2 charging support. The TPS25820/21EVM is built with a TPS25820. The TPS25820 has the same functionality of the TPS25821 with the only difference being VCONN. The TPS25821 does not supply VCONN when an electronically marked cable is connected unlike the TPS25820.

1 Introduction

The TPS25820 device is a simple to use USB Type-C controller with an integrated 1.5-A rated USB VBUS power switch. The TPS25820 device meets the source requirements as defined in the USB Type-C specification and implements the source state machine for the detection of USB Type-C device attach/detach, connection orientation, and attached device type. For more information about the TPS25820 and TPS25821 devices, see the TPS25820, TPS25821 USB Type-CTM 1.5-A Source

Controller and Power Switch data sheet.

TPS25820 and TPS25821 Evaluation Module

Figure 1. TPS25820/21EVM

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100k 1%

GND

5V/1.5A

CHG

FAULT# UFP# POL#

GND

FAULT#

UFP#

POL#

CC2

CC1

OUT

IN1

Green

GND

Green

GND

Green

GND

Q2 Q3

5.1k

R11

GND

CC1

5.1k

R13

GND

CC2

GND

TIP (+)

1 2 3

J10

1 2 3

GND

J11

OUT

100k

TP3

TP4

DNP

TP5

DNP

TP6

DNP

TP2

TP7 TP8

1.0k

R14

1.0k

R12

360

LED_PWR

TP1

GND

REF

GND GND GND GND

Vin Range: IN: 4.5 - 5.5 V

Source Current : 1.5A

R10

GND

J_IN

GND

CC1

CC2

CHG

GND

OUT

PAD

REF

FAULT

POL

UFP

TPS25820DSS

GND

0.1µF

3 2

PJ-202AH

1 2 3

GND

TX1+

TX1-

VBUS

CC1

D+

D-

SBU1

VBUS

RX2-

A10

RX2+

A11

GND

A12

GND

TX2+

TX2-

VBUS

CC2

D+

D-

SBU2

VBUS

RX1-

B10

RX1+

B11

GND

B12

11223

20-0000016-01

GND

6.8µF

Vout GND

CC2

200

DNP

CC1 GND

OUT

TP9

GND

10µF

GND

DP1

GND2NC

DM1

TPS2514DBVR

DNP

0.1µF

47µFC247µFC347µF

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2 Schematic

Schematic

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Figure 2. TPS25820 EVM Schematic

TPS25820 and TPS25821 Evaluation Module

Test Points

3 Test Points

Table 1 lists the test points and the description of each test point.

Test Point Label Description

TP1 GND Ground connecting for input and output signals TP2 IN1 Input Voltage TP3 OUT Output Voltage TP4 FAULT# Active low fault signal TP5 UFP# Active low Sink (SNK) detect signal TP6 POL# Active low polarity signal TP7 CC1 CC1 Voltage TP8 CC2 CC2 Voltage

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Table 1. Test Points

Figure 3. Test Points

TPS25820 and TPS25821 Evaluation Module

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5-V/3-A Power Adapter

J_IN

IN1

TPS25820

J_IN

IN1

5-V/3-A Power Supply

J_IN

GND

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4 Powering Up the EVM

The TPS25820/21EVM has two input-power Sources: a 5-V/3-A barrel jack adapter or a power supply through J8 connector. These two power Sources provide power to the TPS25820 device IN pin by setting jumper J7 either to barrel jack or to J1_IN as shown in Figure 4.

Powering Up the EVM

TI recommends a power adaptor that is a standard 2.1-mm DC power adaptor with a positive tip that can support 5-V and 3-A. An example of a power adaptor to use is the WSU050-3000 wall power supply. When using a power supply through J8 connector as a power source, make sure to stay within the specified voltage limits for each pin listed in the data sheet

4.1 Measuring TPS25820 Device Power Consumption

The TPS25820 device is powered through IN pin which is the same pin that powers OUT pin, thus the easy way to measure power consumption is to connect an ammeter to jumper J7 on the EVM. Figure 5 shows how to connect the Ammeter to IN1 pin through J7 jumper (depending on how the EVM is powered). For accurate power consumption measurements, remove jumpers J1 and J11 powering output signals LEDs and BC1.2 device respectively.

When no Sink is attached to the USB port on the EVM, the TPS25820 consumes only 1 μA. To test this, have the Ammeter connected properly to jumper J7, remove jumper J1 to disconnect output signals LEDs, jumper J11 to disconnect TPS2514A device, jumpers J9 and J10 to disconnect Rd resistors for CC lines, and make sure nothing is connected to the USB port.

Figure 4. Choosing the Right Power Source

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TPS25820 and TPS25821 Evaluation Module

Disabled

Enabled

5-V/3-A Power Adapter

J_IN

IN1

TPS25820

J_IN

IN1

5-V/3-A Power Supply

J_IN

GND

Enabling and Configuring the TPS25820

Figure 5. Connecting the Ammeter to IN1 Pin and Pre-Selected Power Source

5 Enabling and Configuring the TPS25820

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5.1 Enabling and Disabling the TPS25820

The TPS25820 has an enable pin that creates a convenient way to turn on or off the device without interrupting the power Source. Jumper J3 on the TPS25820/21EVM can be used to enable or disable TPS25820 device, Figure 6 shows enable and disable positions for this jumper.

5.2 Configuring the Broadcasted Current Limit for the TPS25820 Device

TPS25820 device can advertise (using CC lines) how much current it can supply to the attached Sink device. The two current limits that the TPS25820 device support are: STD and 1.5-A. Jumper J6 allows switching between these two current limit levels by either setting the jumper to 5-V (High) or to GND (Low) which in turn sets CHG pin on the TPS25820 device to change the current limit advertisement level.

Figure 7 shows how to set Jumper J6 to advertise the desired current limit broadcast through the CC

lines.

Figure 6. How to Enable and Disable TPS25820 Device on the EVM

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CHG

HIGH

LOW

CHG

Jumper Position

Broadcasted Current Limit

Broadcasted Current Limit: STD

Actual Current Limit: 1.7 A

Broadcasted Current Limit: 1.5 A

Actual Current Limit: 1.7 A

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Figure 7. Jumper J6 Setting for Each Broadcasted Current Level

6 TPS25820/21EVM Features

The TPS25820/21EVM allows for all the features of the TPS25820 device to be tested without a USB Type-C Cable and external Sink device. This section lists the most common types of situations that can happen with the TPS25820/21EVM and within each section is an explanation of how to test each situation with and without external components. Remember how the test jumpers J9 and J10 (which control CC1 and CC2, respectively) connect to the TPS25820 device and the resistors. Figure 8 shows how these resistors are connected.

TPS25820/21EVM Features

Figure 8. Schematic Showing How CC1 and CC2 are Connected to Jumpers J9 and J10

When connecting a physical USB Type-C Cable into the port of the EVM, make sure to disconnect jumpers (J9, J10) and disconnect any loads on J4 connector (which is connected to OUT pin) in order to avoid interference on the CC lines

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CAUTION

TPS25820 and TPS25821 Evaluation Module

Sink with Standard USB Type-&Œ&DEOH&RQQHFWHG Sink with Full Featured USB Type-&Œ&DEOH&RQQHFWHG

CC1

CC2

J9 J10

ON OFF

UFP# POL#

Normal

Cable

Orientation

CC1

CC2

J10 J10

ON OFF

UFP# POL#

Flipped

Cable

Orientation

CC1

CC2

J10

ON OFF

UFP# POL#

CC1

CC2

J10

ON OFF

UFP# POL#

TPS25820/21EVM Features

6.1 No Connection on the EVM

When nothing is connected to the output of the TPS25820/21EVM, the TPS25820 will not output any power over the OUT pin. In this mode the TPS25820 device will consume only 1 μA.

In order to replicate this mode on the EVM, make sure that jumpers J1, J9, J10, and J11 are left open (not set to any position) so that power goes only to the TPS25820 device.

6.2 Connecting a Source (SRC) Device

The TPS25820 device is a Source and it continuously monitors the CC lines to detect if an SINK device is attached. The way it determines if a SINK is attached by monitoring the voltages on CC lines to see if these voltages get pulled down by an Rd resistors values. Connecting SOURCE device such as the TPS25820 to another SOURCE device will not turn on the output of the TPS25820 device since both Sources will continue to monitor their CC lines for a valid connection (Rd pull-down resistors). This can be tested on the TPS25820/21EVM by connecting a known Source device to the USB Type-C port on the EVM or by connecting two TPS25820/21EVMs via a USB Type-C cable.

6.3 Connecting a Sink (SNK) Device

A Sink device can be attached to a Source device such as the TPS25820 via a standard USB Type-C cable or a full-featured USB Type-C cable. The TPS25820 device detects that a Sink is attached by sensing if any of the CC lines is pulled down by an Rd resistor value. If a Sink with a full-featured USB Type-C cable is attached, then one CC line will be pulled down by an Rd resistor value while the other CC line will be pulled down by a Ra resistor value, thus the TPS25820 device will supply VCONN on the CC line with the Ra resistor value. The TPS25820/21EVM will report the polarity of the Sink device attached to its USB port via POL# LED when a flipped USB Type-C cable is connected. To replicate those two types of Sink connections along with their cable polarity orientations on the TPS25820/21EVM, set jumpers J9 (controls CC1) and J10 (controls CC2) based on Figure 9. Figure 9 shows UFP# and POL# signals LEDs behavior based on jumper J9 and J10 settings.

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TPS25820 and TPS25821 Evaluation Module

Figure 9. Simulating a Sink (SNK) Device Connected to TPS25820/21EVM

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CC1

CC2

J10

UFP#

POL#

OFF

CC1

CC2

UFP#

POL#

OFF

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6.4 Connecting a Full-Featured USB Type-C™ Cable

The way the TPS25820 device detects a Sink device is attached is by checking if either of the CC lines is connected to Rd resistor value, connecting only a full-featured USB Type-C cable to the port on the EVM will not light-up UFP# and POL# LEDs since TPS25820 Sink attached signal will not be triggered. To replicate such connection on the TPS25820 EVM, set jumpers J9 or J10 to apply Ra resistor value to CC line as shown in Figure 10. Note that the UFP# and POL# LEDs will not light up.

Figure 10. Connecting a Full-Featured USB Type-C™ Cable to TPS25820/21EVM

TPS25820/21EVM Features

6.5 Legacy Charging Support

The TPS25820/21EVM supports legacy USB charging scheme via TPS2514A device which supports legacy battery charging schemes such as BC1.2. For more information about the TPS2514A device, refer to the TPS2514A data sheet. Note that in order to connect legacy USB device to the TPS25820/21EVM, a USB Type-C cable adaptor will be needed. Jumper J11 is used to enable or disable the TPS2514A device. Figure 11 shows the schematic connection for the TPS2514A device. Note that the TPS2514A is not populated on the TPS25820/21EVM and would need to be in order to support USB charging schemes.

Figure 11. Schematic of TPS2514A Device Section

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TPS25820 and TPS25821 Evaluation Module

TPS25820/21EVM Output Signals LEDs Operation

7 TPS25820/21EVM Output Signals LEDs Operation

7.1 FAULT Detected (FAULT# LED)

There are two conditions that can cause this fault signal to occur and lights up FAULT# LED; those conditions are:

1. The output of the TPS25820 exceeds the actual current limit.

2. The TPS25820 device exceeds the Rising threshold temperature for device shutdown or Rising threshold temperature for OUT/VCONN switches shutdown in current limit.

As soon as the current and the temperature go back to their normal ranges, the fault signal is cleared, FAULT# LED will turn off, and the device resumes normal operation. Refer to Electrical Characteristics section located in the TPS25820 data sheet, for more information on the current and temperature thresholds.

7.2 Sink (SNK) device attached Detected (UFP# LED)

UFP# LED will turn on as soon as a Sink device is attached to the USB Type-C port and is communicating properly through the CC lines. See Table 2 to determine the necessary conditions for the CC lines to activate this signal.

Table 2. TPS25820 Responses Based on Port Connection Type

TPS25820 USB Type-C™ Port CC1 CC2 OUT

Nothing Attached OPEN OPEN OPEN NO HI-Z HI-Z

SINK Attached Rd OPEN IN1 NO HI-Z LOW SINK Attached OPEN Rd IN1 NO LOW LOW

Powered Cable/NO SINK

Attached

Powered Cable/NO SINK

Attached Powered Cable/SINK Attached Rd Ra IN1 CC2 HI-Z LOW Powered Cable/SINK Attached Ra Rd IN1 CC1 LOW LOW

OPEN Ra OPEN NO HI-Z HI-Z

Ra OPEN OPEN NO HI-Z HI-Z

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TPS25820 Responses

VCONN on CC1 or CC2 POL# UFP#

7.3 Flipped USB Type-C™ Cable Detected (POL# LED)

Polarity signal was introduced in USB Type-C plug connection since you can insert USB Type-C cable in either orientation. The TPS25820 device detects the orientation of the USB Type-C Cable attached by lighting up POL# LED when a Sink device with Flipped USB Type-C Cable is attached. Refer to Table 2 to see what conditions for the CC lines are necessary to activate this signal.

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8 TPS25820 EVM Board Layout

The following images show the silkscreen, top, bottom, and assembly layers of the TPS25820/21EVM-xxx

TPS25820 EVM Board Layout

Space Space

Figure 12. Top Silkscreen

Figure 13. Top Solder Mask

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TPS25820 and TPS25821 Evaluation Module

TPS25820 EVM Board Layout

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Figure 14. Top Layer

Space

Figure 15. Bottom Layer

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TPS25820 EVM Board Layout

Figure 16. Top Assembly

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TPS25820 and TPS25821 Evaluation Module

Bill of Materials

9 Bill of Materials

Designator Quantity Value Description Package Reference Part Number Manufacturer

C2, C3, C4 3 47uF CAP, CERM, 47 µF, 10 V, +/- 10%, X5R, 1206 1206 GRM31CR61A476KE15L Murata

C6 1 6.8uF CAP, CERM, 6.8 µF, 25 V, +/- 10%, X5R, 0805 0805 C2012X5R1E685K125AC TDK C8 1 10uF CAP, CERM, 10 µF, 16 V, +/- 20%, X5R, 0805 0805 0805YD106MAT2 AVX

D1, D2, D3 3 Green LED, Green, SMD LED_0805 LTST-C170KGKT Lite-On

J1, J11 2 Header, 100mil, 2x1, Tin, TH Header, 2x1, 100mil, TH 5-146278-2 TEConnectivity

J2 1 Connector, Receptacle, USB Type-C, R/A, SMT

J3, J6, J7, J9, J10 5 Header, 100mil, 3x1, Tin, TH Header, 3x1, 100mil, TH 5-146278-3 TE Connectivity

J4, J8 2 Terminal Block, 6A, 3.5mm Pitch, 2-Pos, TH 7.0x8.2x6.5mm ED555/2DS On-Shore Technology

J5 1 Connector, DC Jack 2.1X5.5 mm, TH Conn,DC Jack, pin 2mm Dia. PJ-202AH CUI Inc.

LBL1 1

Q1, Q2, Q3 3 -50V MOSFET, P-CH, -50 V, -0.13 A, SOT-23 SOT-23 BSS84-7-F Diodes Inc.

R1, R2, R3 3 100k RES, 100 k, 5%, 0.1 W, 0603 0603 CRCW0603100KJNEA Vishay-Dale R4, R5, R6 3 360 RES, 360, 5%, 0.1 W, 0603 0603 CRCW0603360RJNEA Vishay-Dale

R7 1 100k RES, 100 k, 1%, 0.1 W, 0603 0603 CRCW0603100KFKEA Vishay-Dale

R9, R10 2 0 RES, 0, 5%, 0.063 W, 0402 0402 CRCW04020000Z0ED Vishay-Dale R11, R13 2 5.1k RES, 5.1 k, 5%, 0.1 W, 0603 0603 CRCW06035K10JNEA Vishay-Dale R12, R14 2 1.0k RES, 1.0 k, 5%, 0.1 W, 0603 0603 CRCW06031K00JNEA Vishay-Dale

SH-J1, SH-J3, SH-

J6, SH-J7, SH-J9,

SH-J10, SH-J11

TP1, TP9 2 Black Test Point, Miniature, Black, TH Black Miniature Testpoint 5001 Keystone

TP2, TP3, TP7, TP8 4 Red Test Point, Miniature, Red, TH Red Miniature Testpoint 5000 Keystone

U1 1 USB Type-C 1.5 A DFP Controller and Power Switch, DSS0012B DSS0012B TPS25820DSS Texas Instruments U2 1 USB Dedicated Charging Port Controller, DBV0006A (SOT-23-6) DBV0006A TPS2514DBV Texas Instruments

FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A

R8 0 200 RES, 200, 1%, 0.063 W, 0402 0402 CRCW0402200RFKED Vishay-Dale

TP4, TP5, TP6 0 Red Test Point, Miniature, Red, TH Red Miniature Testpoint 5000 Keystone

7 Shunt, 2.54 mm Gold Blue Shunt, 2.54 mm Blue 60900213621 Wurth Elektronik

Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per

roll

Connector, Receptacle, USB

Type-C, SMT

PCB Label 0.650" H x 0.200" W THT-14+423-10 Brady

20-0000016-01 Lintes Technology

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PCB Layout Recommendations

10 PCB Layout Recommendations

• Keep input capacitors as close as possible to IC.

• USB protocol recommends having an input capacitance of 120 μF.

• Pullup resistors recommended being 100 kΩ.

• Keep CC lines close to the same length.

• Have the IN and OUT traces as short as possible and wide enough for 1.5-A (3-A if using two TPS25820.

• The resistor attached to the REF pin and GND pin of the device has two requirements: – The connection between the resistor and the GND pin should be isolated from the GND plane. – Place the resistor as close as possible to REF pin.

11 Trademarks

USB Type-C is a trademark of USB Implementer's Forum. All other trademarks are the property of their respective owners.

Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Original (September 2017) to A Revision ............................................................................................... Page

• Added TPS25821 evaluation module to the user's guide............................................................................ 4

• Changed caption on Figure 8............................................................................................................ 9

• Updated Figure 9......................................................................................................................... 10

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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, 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.

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Texas instruments TPS25821, TPS25820 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual