Texas Instruments 20A, 20 Vin, 1.2 Vout Synchronous Buck Converter Evaluation Module TPS51218EVM-496 TPS51218EVM-496 데이터 시트
제품 코드
TPS51218EVM-496
www.ti.com
Description
1
Description
The TPS51218EVM is designed to use a regulated 12-V bus to produce a regulated 1.2-V output at up to
20 A of load current. The TPS51218EVM is designed to demonstrate the TPS51218 in a typical,
low-voltage application while providing a number of test points to evaluate the performance of the
TPS51218.
20 A of load current. The TPS51218EVM is designed to demonstrate the TPS51218 in a typical,
low-voltage application while providing a number of test points to evaluate the performance of the
TPS51218.
1.1
Typical Applications
•
High-current system converters for server and desktop power
•
Switchers and routers
•
Embedded computers
•
In-vehicle infotainment PCs
•
POS terminals
•
Point-of-load modules
•
Graphics cards
•
Industrial control/factory automation PCs
1.2
Features
The TPS51218EVM features:
•
20-Adc steady-state current
•
Support prebias output voltage start-up
•
380-kHz switching frequency
•
J4 for enable function
•
J3 for auto-skip and forced CCM selection
•
Convenient test points for probing critical waveforms
2
Electrical Performance Specifications
Table 1. TPS51218EVM Electrical Performance Specifications
Parameter
Test Conditions
Min
Typ
Max
Units
INPUT CHARACTERISTICS
Voltage range
VIN
8
12
14
V
Maximum input current
VIN = 8 V, Io = 20 A
3.55
A
No load input current
Vin = 14 V, Io = 0 A
50
mA
OUTPUT CHARACTERISTICS
Output voltage VOUT
1.2
V
Line regulation (Vin = 10 V–14 V)
1.0%
Output voltage regulation
Load regulation (Vin = 12 V, Io = 0 A–20 A)
1.0%
Output voltage ripple
Vin = 12 V, Io = 20 A
40
mVpp
Output load current
0
20
A
Output overcurrent
30
A
SYSTEMS CHARACTERISTICS
Switching frequency
380
kHz
Peak efficiency
Vin = 12 V, 1.2 V/10 A
90.32%
Full-load efficiency
Vin = 12 V, 1.2 V/20 A
88.64%
Operating temperature
25
°C
3
SLVU346 – January 2010
Using the TPS51218EVM-496 High-Performance, Single Synchronous,
Step–Down Controller for High-Current, Eco-mode™ Applications
Copyright © 2010, Texas Instruments Incorporated