Datasheet

30
40
50
60
70
80
90
100
Efficiency - %
0.1 1 10 100
I - Output Current - mA
O
V = 3.5 V
IN
V = 5 V
IN
V = 12 V
IN
V = 15 V
IN
V = 3.3 V,
L = 18 H,
LPS3015,
C = 4.7 F
O
O
m
m
V = 7 V
IN
V = 9 V
IN
www.ti.com TPS62122EVM Test Data
4.2 Procedure
Follow these procedures when configuring the EVM for testing.
CAUTION
Many of the components on the TPS62122EVM-586 are susceptible to damage
by electrostatic discharge (ESD). Customers are advised to observe proper
ESD handling precautions when unpacking and handling the EVM, including
the use of a grounded wrist strap, bootstraps, or mats at an approved ESD
workstation. An electrostatic smock and safety glasses should also be worn.
1. Work at an ESD workstation. Make sure that any wrist straps, bootstraps, or mats are connected and
reference the user to earth ground before power is applied to the EVM. Electrostatic smock and safety
glasses should also be worn.
2. Connect a dc power supply between J1 and J3 on the TPS62122EVM. Note that the input voltage
should range from 2.0 V to 15 V. Keep the wires from the input power supply to EVM as short as
possible and twisted.
3. Connect a dc voltmeter or oscilloscope to the output sense connection (J5) of the EVM.
4. A load of up to 75 mA can be connected between J4 and J6 on the TPS62122EVM.
5. To enable the converter, connect the shorting bar on JP1 between EN and ON on the TPS62122EVM.
5 TPS62122EVM Test Data
Figure 4 through Figure 10 present typical performance graphs for the TPS62122EVM. 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.
5.1 Efficiency
Figure 4 shows the typical efficiency performance for the TPS62122EVM.
Figure 3. EFFICIENCY vs
INPUT VOLTAGE V
IN
(V
OUT
= 3.0V)
Figure 4. TPS62122EVM Efficiency versus Load Current
5
SLVU388–August 2010 TPS62122EVM
Copyright © 2010, Texas Instruments Incorporated