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Texas Instruments TPS25820 and TPS25821 Evaluation Modules (Rev. A) User guides
TPS25820 and TPS25821 Evaluation Module
User's Guide
Literature Number: SLVUAZ3A
September 2017 – Revised November 2019
Contents
1
2
3
4
Introduction .........................................................................................................................
Schematic ...........................................................................................................................
Test Points ..........................................................................................................................
Powering Up the EVM ...........................................................................................................
4.1
5
6
Measuring TPS25820 Device Power Consumption ................................................................. 7
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
TPS25820/21EVM Features .................................................................................................... 9
..........................................................................................
6.1
No Connection on the EVM
6.2
Connecting a Source (SRC) Device.................................................................................. 10
....................................................................................
................................................................
6.5
Legacy Charging Support .............................................................................................
7
TPS25820/21EVM Output Signals LEDs Operation ..................................................................
7.1
FAULT Detected (FAULT# LED) .....................................................................................
7.2
Sink (SNK) device attached Detected (UFP# LED) ................................................................
7.3
Flipped USB Type-C™ Cable Detected (POL# LED) ..............................................................
8
TPS25820 EVM Board Layout...............................................................................................
9
Bill of Materials ..................................................................................................................
10
PCB Layout Recommendations ............................................................................................
11
Trademarks .......................................................................................................................
Revision History ..........................................................................................................................
2
4
5
6
7
6.3
Connecting a Sink (SNK) Device
6.4
Connecting a Full-Featured USB Type-C™ Cable
Table of Contents
10
10
11
11
12
12
12
12
13
16
17
17
17
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List of Figures
1
TPS25820/21EVM ........................................................................................................... 4
2
TPS25820 EVM Schematic
3
4
5
6
7
8
9
10
11
12
13
14
15
16
................................................................................................ 5
Test Points .................................................................................................................... 6
Choosing the Right Power Source ........................................................................................ 7
Connecting the Ammeter to IN1 Pin and Pre-Selected Power Source ............................................... 8
How to Enable and Disable TPS25820 Device on the EVM ........................................................... 8
Jumper J6 Setting for Each Broadcasted Current Level ............................................................... 9
Schematic Showing How CC1 and CC2 are Connected to Jumpers J9 and J10 .................................. 9
Simulating a Sink (SNK) Device Connected to TPS25820/21EVM.................................................. 10
Connecting a Full-Featured USB Type-C™ Cable to TPS25820/21EVM .......................................... 11
Schematic of TPS2514A Device Section ............................................................................... 11
Top Silkscreen .............................................................................................................. 13
Top Solder Mask ........................................................................................................... 13
Top Layer.................................................................................................................... 14
Bottom Layer ................................................................................................................ 14
Top Assembly ............................................................................................................... 15
List of Tables
1
Test Points .................................................................................................................... 6
2
TPS25820 Responses Based on Port Connection Type
.............................................................
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List of Figures
12
3
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.
Figure 1. TPS25820/21EVM
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
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Schematic
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2
Schematic
J1
LED_PWR
R1
100k
C1
0.1µF
R2
100k
Q1
FAULT#
R3
100k
Q2
UFP#
Q3
POL#
GND
R4
360
R5
360
D1
Green
D2
Green
GND
GND
J2
TP2
GND
Vin Range:
IN: 4.5 - 5.5 V
TP3
U1
IN1
J3
1
2
3
J5
EN
5V
1
3
2
J6
1
2
3
PJ-202AH
TIP (+)
5V/1.5A
GND
1
2
3
1
2
4
IN
IN
OUT
FAULT
12
OUT
5
FAULT#
EN
CHG 3
CHG
CC1
CC2
9
11
CC1
CC2
REF 8
REF
UFP
6
UFP#
POL
7
POL#
GND
PAD
10
13
R7
100k
1%
DNP
TP4
C6
6.8µF
DNP
TP5
DNP
TP6
H4
H5
H6
GND
GND
TX1+
TX1VBUS
CC1
D+
DSBU1
VBUS
RX2RX2+
GND
GND
RX1+
RX1VBUS
SBU2
DD+
CC2
VBUS
TX2TX2+
GND
H4
H5
H6
H1
H2
H3
1
Source Current : 1.5A
A1
A2
A3
A4
CC1 A5
Dp
A6
Dn
A7
A8
A9
A10
A11
A12
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
OUT
GND
Dn
Dp
CC2
J4
Vout
GND
H1
H2
H3
3
GND
GND
2
GND
C5
0.1µF
GND
D3
Green
3
GND
C8
10µF
C4
47µF
TP9
1
GND
C3
47µF
GND
TP1
2
C2
47µF
R6
360
20-0000016-01
TPS25820DSS
J7
GND
GND
GND
GND
J8
J_IN
GND
J9
Ra
Rd
TP7
1
2
3
J10
R9
0
R11
5.1k
R12
1.0k
CC1
Ra
Rd
U2
TP8
1
2
3
R10
OUT
5
CC2
R13
5.1k
R14
1.0k
IN
C7
0.1µF
0
J11
DNP
2
DM1
6
Dn
DP1
1
Dp
NC
NC
4
3
GND
R8
DNP
200
TPS2514DBVR
GND
GND
GND
Copyright © 2017, Texas Instruments Incorporated
Figure 2. TPS25820 EVM Schematic
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Test Points
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Test Points
Table 1 lists the test points and the description of each test point.
Table 1. Test Points
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
Figure 3. Test Points
6
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Powering Up the EVM
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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.
5V
IN1
J_IN
5-V/3-A Power Adapter
TPS25820
J7
5V
J_IN
IN1
GND
J_IN
J8
TPS25820
J7
5-V/3-A Power Supply
Figure 4. Choosing the Right Power Source
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.
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Enabling and Configuring the TPS25820
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5V
IN1
J_IN
J5
5-V/3-A Power Adapter
TPS25820
J7
5V
J_IN
IN1
GND
J_IN
J8
TPS25820
J7
5-V/3-A Power Supply
Figure 5. Connecting the Ammeter to IN1 Pin and Pre-Selected Power Source
5
Enabling and Configuring the TPS25820
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.
Enabled
5V
Disabled
EN
EN
5V
GND
GND
J3
J3
Figure 6. How to Enable and Disable TPS25820 Device on the EVM
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.
8
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Jumper Position
Broadcasted Current Limit
HIGH
CHG
Broadcasted Current Limit:
Actual Current Limit:
STD
1.7 A
LOW
J6
CHG
HIGH
LOW
Broadcasted Current Limit:
1.5 A
Actual Current Limit:
1.7 A
J6
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.
Figure 8. Schematic Showing How CC1 and CC2 are Connected to Jumpers J9 and J10
CAUTION
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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TPS25820/21EVM Features
6.1
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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.
Sink with Standard USB Type-&Π&DEOH &RQQHFWHG
Normal
Cable
Orientation
Ra
Ra
CC1
CC2
R
R
J9
Flipped
Cable
Orientation
J10
Sink with Full Featured USB Type-&Π&DEOH &RQQHFWHG
UFP# POL#
ON
OFF
J10
Ra
Ra
CC1
CC2
R
R
J9
Ra
Ra
CC1
CC2
R
R
UFP# POL#
ON
J10
OFF
UFP# POL#
ON
OFF
J10
Ra
Ra
CC1
CC2
R
R
J9
UFP# POL#
ON
OFF
J10
Figure 9. Simulating a Sink (SNK) Device Connected to TPS25820/21EVM
10
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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.
Ra
Ra
CC1
CC2
UFP# POL#
Rd
Rd
J9
ON OFF
J10
CC2
Ra
CC1
Ra
Rd
R
J9
UFP# POL#
ON OFF
J10
Figure 10. Connecting a Full-Featured USB Type-C™ Cable to TPS25820/21EVM
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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TPS25820/21EVM Output Signals LEDs Operation
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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
7.3
TPS25820 USB Type-C™ Port
CC1
CC2
OUT
Nothing Attached
OPEN
OPEN
SINK Attached
Rd
OPEN
TPS25820 Responses
VCONN on CC1 or CC2
POL#
UFP#
OPEN
NO
HI-Z
HI-Z
IN1
NO
HI-Z
LOW
SINK Attached
OPEN
Rd
IN1
NO
LOW
LOW
Powered Cable/NO SINK
Attached
OPEN
Ra
OPEN
NO
HI-Z
HI-Z
Powered Cable/NO SINK
Attached
Ra
OPEN
OPEN
NO
HI-Z
HI-Z
Powered Cable/SINK Attached
Rd
Ra
IN1
CC2
HI-Z
LOW
Powered Cable/SINK Attached
Ra
Rd
IN1
CC1
LOW
LOW
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.
12
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TPS25820 EVM Board Layout
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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
Figure 12. Top Silkscreen
Space
Space
Figure 13. Top Solder Mask
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TPS25820 EVM Board Layout
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Figure 14. Top Layer
Space
Figure 15. Bottom Layer
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Figure 16. Top Assembly
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15
Bill of Materials
9
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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
TE Connectivity
J2
1
Connector, Receptacle, USB Type-C, R/A, SMT
Connector, Receptacle, USB
Type-C, SMT
20-0000016-01
Lintes Technology
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
Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per
roll
PCB Label 0.650" H x 0.200" W
THT-14+423-10
Brady
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, SHJ6, SH-J7, SH-J9,
SH-J10, SH-J11
7
Shunt, 2.54 mm Gold Blue
Shunt, 2.54 mm Blue
60900213621
Wurth Elektronik
Keystone
TP1, TP9
2
Black
Test Point, Miniature, Black, TH
Black Miniature Testpoint
5001
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
Texas Instruments
U2
1
USB Dedicated Charging Port Controller, DBV0006A (SOT-23-6)
DBV0006A
TPS2514DBV
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
16
TPS25820 and TPS25821 Evaluation Module
SLVUAZ3A – September 2017 – Revised November 2019
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Copyright © 2017–2019, Texas Instruments Incorporated
PCB Layout Recommendations
www.ti.com
10
PCB Layout Recommendations
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•
•
•
•
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11
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.
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
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•
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Added TPS25821 evaluation module to the user's guide. ........................................................................... 4
Changed caption on Figure 8. ........................................................................................................... 9
Updated Figure 9......................................................................................................................... 10
SLVUAZ3A – September 2017 – Revised November 2019
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Copyright © 2017–2019, Texas Instruments Incorporated
Revision History
17
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