Texas instruments TPS25821, TPS25820 User Manual
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
2
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
SLVUAZ3A–September 2017–Revised November 2019
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List of Figures
3
User's Guide
SLVUAZ3A–September 2017–Revised November 2019
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.
4
TPS25820 and TPS25821 Evaluation Module
Figure 1. TPS25820/21EVM
SLVUAZ3A–September 2017–Revised November 2019
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100k
1%
R7
GND
5V/1.5A
CHG
EN
FAULT# UFP# POL#
GND
FAULT#
UFP#
POL#
CC2
CC1
OUT
IN1
Q1
Green
D1
GND
Green
D2
GND
Green
D3
GND
Q2 Q3
5.1k
R11
GND
CC1
5.1k
R13
GND
CC2
GND
TIP (+)
1
2
3
J9
1
2
3
J10
Ra
Rd
Ra
Rd
1
2
3
J6
1
2
3
J3
GND
Dp
Dn
J11
OUT
100k
R1
100k
R2
100k
R3
TP3
TP4
DNP
TP5
DNP
TP6
DNP
TP2
J1
TP7 TP8
1.0k
R14
1.0k
R12
360
R6
360
R5
360
R4
LED_PWR
5V
TP1
GND
J8
REF
GND GND GND GND
Vin Range:
IN: 4.5 - 5.5 V
Source Current : 1.5A
0
R9
0
R10
GND
J_IN
GND
CC1
9
CC2
11
CHG
3
EN
4
GND
10
IN
2
IN
1
OUT
12
PAD
13
REF
8
FAULT
5
POL
7
UFP
6
U1
TPS25820DSS
GND
0.1µF
C5
1
3
2
J5
PJ-202AH
1
2
3
J7
GND
A1
TX1+
A2
TX1-
A3
VBUS
A4
CC1
A5
D+
A6
D-
A7
SBU1
A8
VBUS
A9
RX2-
A10
RX2+
A11
GND
A12
GND
B1
TX2+
B2
TX2-
B3
VBUS
B4
CC2
B5
D+
B6
D-
B7
SBU2
B8
VBUS
B9
RX1-
B10
RX1+
B11
GND
B12
H1
H1
H2
H2
H3
H3
H4
H4
H5
H5
H6
H6
11223
3
J2
20-0000016-01
GND
6.8µF
C6
J4
Vout
GND
Dp
Dp
Dn
Dn
CC2
200
R8
DNP
CC1 GND
OUT
TP9
GND
10µF
C8
GND
GND
DP1
1
GND2NC
3
NC
4
IN
5
DM1
6
U2
TPS2514DBVR
DNP
0.1µF
C1
0.1µF
C7
47µFC247µFC347µF
C4
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2 Schematic
Schematic
SLVUAZ3A–September 2017–Revised November 2019
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Figure 2. TPS25820 EVM Schematic
TPS25820 and TPS25821 Evaluation Module
5
Copyright © 2017–2019, Texas Instruments Incorporated
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
6
TPS25820 and TPS25821 Evaluation Module
Copyright © 2017–2019, Texas Instruments Incorporated
SLVUAZ3A–September 2017–Revised November 2019
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