Texas Instruments TPS65980EVM User Manual
TPS65980EVM
User's Guide
Literature Number: SLVUA50
April 2014
Contents
1 Introductions....................................................................................................................... 4
2 Setup.................................................................................................................................. 4
2.1 Power Supply Inputs..................................................................................................... 4
2.2 Jumper Settings .......................................................................................................... 5
2.3 Device Configurations ................................................................................................... 6
2.4 Test Points ................................................................................................................ 8
3 Board Assembly and Layout ................................................................................................. 9
4 Schematic ......................................................................................................................... 11
5 Bill of Materials .................................................................................................................. 12
2
Table of Contents SLVUA50–April 2014
Copyright © 2014, Texas Instruments Incorporated
Submit Documentation Feedback
www.ti.com
1 Connection Points ........................................................................................................... 4
2 Low Voltage Input............................................................................................................ 6
3 High Voltage Input During Sleep .......................................................................................... 6
4 High Voltage Input With Lower CBL_OUT Current Limit............................................................... 7
5 High Voltage Input With Higher CBL_OUT Current Limit .............................................................. 7
6 Top Layer Assembly......................................................................................................... 9
7 Bottom Layer Assembly..................................................................................................... 9
8 Top Layer Routing ......................................................................................................... 10
9 Bottom Layer Routing...................................................................................................... 10
10 Schematic ................................................................................................................... 11
List of Figures
SLVUA50–April 2014 List of Figures
Submit Documentation Feedback
3
Copyright © 2014, Texas Instruments Incorporated
TBT
IN
+
-
J1
DEV_EN
J5
OFF|ON
CBL_ILIM
J6
HI|LOW
+
-
J2
+
-
J3
+
-
J4
DEV
OUT
TBT
OUT
CBL
OUT
TPS65980EVM
1 Introductions
The Texas Instruments TPS65980EVM evaluation module (EVM) helps designers evaluate the operation
and performance of the TPS65980: a DC/DC switching regulator that receives power from a Thunderbolt
bus ranging from 2.5V to 15.75V on TBT_IN and generates three separate 3.3V supply outputs
TBT_OUT, CBL_OUT, and DEV_OUT.
The TBT_OUT supply provides power to the local peripheral Thunderbolt™ controller and support
circuitry. The CBL_OUT supply provides power back to the Thunderbolt™ cable and has adjustable
current limit. The DEV_OUT supply provides power to all other circuitry in the device to perform its
designed function.
The TPS65980 is available in a 24-pin 5mm x 4mm x 0.9mm QFN package.
User's Guide
SLVUA50–April 2014
Table 1. Device and Package Configurations
CONVERTER IC PACKAGE
U1 TPS65980RHF RHF
2 Setup
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS65980EVM.
2.1 Power Supply Inputs
Figure 1 shows the connection points needed to fully and correctly interface with the TPS65980EVM.
Figure 1. Connection Points
4
TPS65980EVM SLVUA50–April 2014
Copyright © 2014, Texas Instruments Incorporated
Submit Documentation Feedback
Loading...