Texas Instruments Evaluation Module for TPS51217 20A Synchronous Step Down Controller with DCAP™ Mode TPS51217EVM-533 TPS51217EVM-533 데이터 시트
제품 코드
TPS51217EVM-533
www.ti.com
Description
1
Description
The TPS51217EVM is designed to use a regulated voltage between 8 V and 20 V to produce dynamically
selectable 0.9 V to 1.2 V output at up to 20 A of load current. The TPS51217EVM is designed to
demonstrate the TPS51217 in a typical low-voltage application while providing a number of test points to
evaluate the performance of the TPS51217.
selectable 0.9 V to 1.2 V output at up to 20 A of load current. The TPS51217EVM is designed to
demonstrate the TPS51217 in a typical low-voltage application while providing a number of test points to
evaluate the performance of the TPS51217.
1.1
Typical Applications
•
Notebook Computers
•
I/O Supplies
•
System Power Supplies
1.2
Features
•
Dynamically selectable output voltage from 0.9 V to 1.2 V by 0.1-V step
•
20-A DC steady state current
•
Supports pre-bias output voltage start-up
•
340-kHz switching frequency
•
SW1 for enable function
•
Convenient test points for probing critical waveforms
2
Electrical Performance Specifications
Table 1. TPS51217EVM Electrical Performance Specifications
SPECIFICATION
TEST CONDITIONS
MIN
TYP
MAX
UNITS
INPUT
V
IN
Input voltage range
8
12
20
V
I
MAX
Maximum input current
V
IN
=8 V, I
OUT
= 20 A
3
A
No load input current
V
IN
=8 V, I
OUT
= 0 A
0.01
mA
V
V5IN
Voltage range
4.5
5.0
5.5
V
I
MAX
Maximum input current
V
V5IN
=5 V, V
IN
=12 V, I
OUT
= 20 A
15
mA
No load input current
V
V5IN
=5 V, V
IN
=12 V, I
OUT
= 0 A
0.4
mA
OUTPUT
V
IN
=12 V, (VID1,VID0)=(0,0), I
OUT
= 10 A
0.9
V
IN
=12 V, (VID1,VID0)=(0,1), I
OUT
= 10 A
1.0
V
OUT
Output voltage
V
V
IN
=12 V, (VID1,VID0)=(1,0), I
OUT
= 10 A
1.1
V
IN
=12 V, (VID1,VID0)=(0,0), I
OUT
= 10 A
1.2
I
OUT
Output current
Output load current
20
A
Line Regulation
8 V
≤
V
IN
≤
20 V, V
OUT
=0.9 V, I
OUT
= 20 A
0.3%
Load Regulation
V
IN
= 12 V, V
OUT
=0.9 V, 1 mA
≤
I
OUT
≤
20 A
0.4%
V
RIPPLEL
V
IN
= 12 V, V
OUT
=0.9 V, I
OUT
= 20 A
29
mV
P-P
I
OC
Output overcurrent
28
SYSTEM
f
SW
Switching frequency
V
IN
= 8 V, V
OUT
=0.9 V, I
OUT
= 10 A
340
kHz
Peak efficiency
V
IN
= 12 V, V
OUT
=0.9
88.8%
Full load efficiency
V
IN
= 12 V, V
OUT
=0.9 V, I
OUT
= 20 A
84.4%
T
A
Operating ambient temperature
25
°C
3
SLUU420 – MAY 2010
Using the TPS51217EVM-533, High-Performance, Single-Synchronous
Step-Down Controller for Notebook Power Supply
Copyright © 2010, Texas Instruments Incorporated