Texas Instruments TPS53515, User Manual

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1 Introduction
The TPS53515EVM-PWR587 evaluation module (EVM) uses the TPS53515 device. The TPS53515 device is a
D-CAP3
™ mode, 12-A synchronous buck-converter with integrated MOSFETs. The device provides a fixed 1.2-V
output at up to 12 A from a 12-V input bus.
2 Description
The TPS53515EVM-PWR587 is designed for a regulated 12-V bus to produce a regulated 1.2-V output at up to
12 A of load current. The TPS53515EVM-PWR587 is designed to demonstrate the TPS53515 device in a typical
low-voltage application while providing a number of test points to evaluate the performance of the TPS53515
device.
2.1 Typical Applications
• Servers and storage
• Workstations and desktops
• Telecommunication infrastructure
2.2 Features
The TPS53515EVM-PWR587 features include the following:
• 12-A DC steady-state output current
• Support for a prebias-output voltage at startup
• Jumper, J2, for enable function
• Jumper, J5, for auto-skip and forced-continuous-conduction-mode (FCCM) selection
• Jumper, J7, for extra 5-V input for further power saving purpose
• Convenient test points for probing critical waveforms
3 Electrical Performance Specifications
Table 3-1. TPS53515EVM-PWR587 Electrical Performance Specifications
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input Characteristics
Voltage range V
IN
5 12 18 V
Maximum input current V
IN
= 5 V, I
O
= 8 A 2.5 A
No load input current V
IN
= 12 V, I
O
= 0 A with auto-skip mode 1 mA
Output Characteristics
Output voltage VOUT 1.2 V
Output voltage regulation
Line regulation (V
IN
= 5 V – 14 V) with FCCM 0.2
%
Load regulation (V
IN
= 12 V, I
O
= 0 A – 8 A) with FCCM 0.5
Output voltage ripple V
IN
= 12 V, I
O
= 8 A with FCCM 10 mVpp
Output load current 0 12 A
Output over current 15 A
Soft-start 1 ms
Systems Characteristics
Switching frequency V
IN
= 12 V, 1.2 V / 4 A 1000 kHz
Peak efficiency V
IN
= 12 V, 1.2 V / 8 A 88.5 %
Full load efficiency 86.9 %
Operating temperature 25 °C
(1) Jumpers set to default locations, See Section 6 .
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2 TPS53515 Step-Down Converter Evaluation Module User's Guide SLUUAS1C – OCTOBER 2013 – REVISED NOVEMBER 2021
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