Introduction
1
Introduction
The TPS53319EVM-136 evaluation module (EVM) uses the TPS53319. The TPS53319 is a D-CAP™
mode, 14A synchronous Buck converter with integrated MOSFETs. It provides a fixed 1.5V output at up to
14A from a 12V input bus.
1.1
Typical Applications
•
Server/Storage
•
Workstations and Desktops
•
Telecommunication Infrastructure
1.2
Features
The TPS53319EVM-136 features:
•
14A DC Steady State Output Current
•
Support pre-bias output voltage start-up
•
J3 for selectable switching frequency setting
•
J4 for selectable soft start time
•
J5 for auto-skip and forced CCM selection
•
J6 for enable function
•
Convenient test points for probing critical waveforms
2
Electrical Performance Specifications
Table 1. TPS53319EVM-136 Electrical Performance Specifications
(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
INPUT CHARACTERISTICS
Voltage range
VIN
8
12
20
V
Maximum input current
VIN = 8V, Io = 14 A
2.874
A
No load input current
Vin=20V, Io=0A with auto skip mode
0.7
mA
OUTPUT CHARACTERISTICS
Output voltage VOUT
1.5
V
Output voltage regulation
Line regulation(Vin=8V-20V)
0.1%
Load regulation(Vin=12V, Io=0A-14A) Auto-skip
1%
Output voltage ripple
Vin=12V, Io=14A
15
mVpp
Output load current
0
14
A
Output over current
16
A
SYSTEMS CHARACTERISTICS
Switching frequency
500
kHz
Peak efficiency
Vin=12V, 1.5V/8A
91.68%
Full load efficiency
Vin=12V, 1.5V/14A
90.04%
Operating temperature
25
ºC
(1)
Note: Jumpers set to default locations, See section 6 of this user’s guide
3
SLVU728 – May 2012
High Efficiency 14A Synchronous Buck Converter with Eco-Mode™
Copyright © 2012, Texas Instruments Incorporated
