Texas Instruments TPS40345EVM-353, User Manual, Page: 3 / 23

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Description
3 SNVU588 – November 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS40345EVM-353 Evaluation Module
1 Description
The TPS40345EVM-353 is designed to use a regulated 12 V (8 V – 14 V) bus voltage to provide a
regulated 1.2-V output at up to 20 A of load current. The TPS40345EVM-353 is designed to demonstrate
the TPS40345 controller and TI NexFETs in a typical 12-V bus to low-voltage application while providing a
number of non-invasive test points to evaluate the performance of the TPS40345 and TI NexFETs in a
given application.
1.1 Applications
• High-current, low-voltage FPGA or microcontroller core supplies
• High-current point of load modules
• Telecommunications equipment
• Computer peripherals
1.2 Features
• 8-V to 14-V input voltage rating
• 1.2-V ± 2% output voltage rating
• 20-A steady state load current
• 600-kHz switching frequency
• Simple access to IC features including power good, enable, soft start, and error amplifier
• Convenient test points for simple, non-invasive measurements of converter performance
2 TPS40345EVM-353 Electrical Performance Specifications
Table 1. TPS40345EVM-353 Electrical and Performance Specifications
PARAMETER NOTES AND CONDITIONS MIN TYP MAX UNIT
INPUTS CHARACTERISTICS
V
IN
Input voltage 8 12 14 V
I
IN
Input current V
IN
= Nom, I
OUT
= Max 2.3 2.5 A
No load input current V
IN
= Nom, I
OUT
= 0A 40 50 mA
V
IN_UVLO
Input UVLO I
OUT
= 10 A 3.0 V
OUTPUTS CHARACTERISTICS
V
OUT1
Output voltage 1 V
IN
= 12 V, I
OUT
= 20 A 1.17 1.2 1.23 V
Line regulation V
IN
= 8 V to 14 V 0.5%
Load regulation I
OUT
= 0 A to 20 A 0.5%
V
OUT_ripple
Output voltage ripple V
IN
= 12 V, I
OUT
= 20 A 24 mVpp
I
OUT1
Output current 1 V
IN
= 8 V to 14 V 0 20 A
SYSTEMS CHARACTERISTICS
f
SW
Switching frequency 540 600 660 kHz
η pk Peak efficiency V
IN
= 12 V 88%
η Full load efficiency V
IN
= 12 V, I
OUT
= 20 A 86%