Texas Instruments Evaluation Module for 3MHz, 2A Step-Down Converter TPS62065-67EVM-347 TPS62065-67EVM-347 Datenbogen
Produktcode
TPS62065-67EVM-347
100
95
90
85
80
75
70
65
60
55
50
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
I
(A)
OUT
Efficiency(%)
V
= 3.0 V
IN
V
= 3.3 V
V
= 3.6 V
V
= 4.2 V
V
= 5.0V
IN
IN
IN
IN
L = 1.0 H (LQH441R0)
C
C
= 10 F (0603 size)
m
m
OUT
V
=1.8 V
Mode: Auto PFM/PWM
OUT
EFFICIENCY vs LOAD CURRENT
2 V/div
500 mA/div
2 A/div
1 V/div
500 mA/div
Time (100 s/div)
m
V
= 3.6 V
V
= 1.8 V
Load = R2R
IN
OUT
L = 1.2 H
C
C
= 10 F
m
m
OUT
TPS62065 Startup
TPS62065/67EVM Test Data
www.ti.com
6
TPS62065/67EVM Test Data
through
present typical performance curves for the TPS62065/67EVM. Actual
performance data can be affected by measurement techniques and environmental variables; therefore,
these curves are presented for reference and may differ from actual results obtained by some users.
these curves are presented for reference and may differ from actual results obtained by some users.
6.1
Efficiency
shows the typical efficiency performance for the TPS62065 and TPS62067.
Figure 4. TPS62065, TPS62067 Efficiency vs Load Current
6.2
Start-up: TPS62065
shows the typical start-up performance for the TPS62065 using the TPS62065EVM.
Conditions: VIN = 3.6 V, V
OUT
= 1.8 V
Figure 5. TPS62065 Startup into 2.2-
Ω
Load
8
TPS62065/67EVM
SLVU364 – March 2010
Copyright © 2010, Texas Instruments Incorporated