Texas Instruments Evaluation Module for TPS53129 Dual Synchronous Step-Down Controller TPS53129EVM-621 TPS53129EVM-621 데이터 시트
제품 코드
TPS53129EVM-621
Introduction
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1
Introduction
1.1
Description
The TPS53129EVM-621 evaluation board provides the user with a convenient way to evaluate the
TPS53129 Dual D-CAP2™ Mode Control Step-Down Controller in a realistic cost-sensitive application.
Providing both a low core-type 1.05-V and I/O type 1.8-V output at up to 4 A from a loosely regulated 12-V
(8-V to 22-V) source, the TPS53129EVM-621 includes switches and test points to assist users in
evaluating the performance of the TPS53129 controller in their application.
TPS53129 Dual D-CAP2™ Mode Control Step-Down Controller in a realistic cost-sensitive application.
Providing both a low core-type 1.05-V and I/O type 1.8-V output at up to 4 A from a loosely regulated 12-V
(8-V to 22-V) source, the TPS53129EVM-621 includes switches and test points to assist users in
evaluating the performance of the TPS53129 controller in their application.
1.2
Application
•
Digital television
•
Set-top box
•
DSL and cable modems
•
Cost-sensitive digital consumer products
1.3
Features
•
8-V to 22-V input
•
1.05-V and 1.8-V output
•
Up to 4 A per channel output
•
700-kHz pseudo-fixed frequency D-CAP2™ mode control
•
Independent enable switches for power-on/power-off testing
2
Electrical Performance Specifications
Table 1. TPS53129EVM-621 Electrical and Performance Specifications
Parameter
Notes and Conditions
MIN
TYP
MAX
UNIT
INPUT CHARACTERISTICS
V
IN
Input Voltage
8
12
22
V
I
IN
Input Current
V
IN
= 12 V, I
OUT1
= 4 A, I
OUT2
= 4 A
–
1.2
1.5
A
No-Load Input Current
V
IN
= 12 V, I
OUT
= 0 A
–
20
–
mA
V
IN_UVLO
Input UVLO
I
OUT
= 4 A
4.0
4.2
4.5
V
OUTPUT CHARACTERISTICS
V
OUT1
Output Voltage 1
V
IN
= 12 V, I
OUT1
= 2 A
–
1.05
–
V
Line Regulation
V
IN
= 8 V to 22 V
–
–
1%
Load Regulation
I
OUT1
= 0 A to 4 A
–
–
1%
V
OUT1_rip
Output Voltage Ripple
V
IN
= 12 V, I
OUT2
= 4 A
–
-
30 mVpp
I
OUT1
Output Current 1
V
IN
= 8 V to 22 V
0
4
A
V
OUT2
Output Voltage 2
V
IN
= 12 V, I
OUT2
= 2 A
–
1.80
–
V
Line Regulation
V
IN
= 8 V to 22 V
–
–
1%
Load Regulation
I
OUT2
= 0 A to 4 A
–
–
1%
V
OUT2_rip
Output Voltage Ripple
V
IN
= 12 V, I
OUT2
= 4 A
–
–
30 mVpp
I
OUT2
Output Current 2
V
IN
= 8 V to 22 V
0
4
A
SYSTEMS CHARACTERISTICS
F
SW
Switching Frequency
350
700
800
kHz
η
pk1
Peak Efficiency of Output 1
V
IN
= 12 V
–
85%
–
η
1
Full-Load Efficiency of Output 1
V
IN
= 12 V, I
OUT1
= 4 A
–
84%
–
η
pk2
Peak Efficiency of Output 2
V
IN
= 12 V
–
89%
–
η
2
Full-Load Efficiency of Output 2
V
IN
= 12 V, I
OUT2
= 4 A
–
88%
–
D-CAP2 is a trademark of Texas Instruments.
2
TPS53129EVM-621 Evaluation Module
SLVU432 – February 2011
© 2011, Texas Instruments Incorporated