Datasheet

Background
1-2
1.1 Background
This TPS6222xEVM uses a TPS6222X buck converter to step down 2.5-V or
higher input voltages. This EVM operates over an input voltage range of 2.5 V
to 6 V. The goal of the EVM is to demonstrate the small size of the TPS6220X
power supply solution and provide flexibility in interchanging the supporting
passive components.
The TPS62221EVM uses a TPS62221 fixed 1.5-V output buck converter. The
TPS62220EVM uses a TPS62220 adjustable output buck converter and the
appropriate feedback components to provide 1.8-V. Both EVMs include an
enable jumper that allows the user to disable the device.
1.2 Performance Specification Summary
Table 1−1 provides a summary of the TPS6222xEVM performance
specifications. All specifications are given for an ambient temperature of 25°C.
Table 1−1.Performance Specification Summary
Specification Test Conditions Min Typ Max Unit
Input voltage range
TPS62220EVM 2.5 6
V
Input voltage range
TPS62221EVM 2.5 6
V
Output voltage
TPS62220EVM 1.8
V
Output voltage
TPS62221EVM 1.5
V
Output current 0 400 mA
1.3 Modifications
Because the primary goal of the EVM is to demonstrate the small size of the
TPS6222x power supply solution, capacitors and inductors with small
footprints were chosen. These capacitors and inductors were carefully
selected to maximize efficiency and minimize ripple while minimizing overall
solution size. Changing components could improve or degrade EVM
performance.