Texas Instruments 2.25A Inverting Buck Boost Regulator Evaluation Module TPS5430EVM-342 TPS5430EVM-342 Datenbogen
Produktcode
TPS5430EVM-342
2.2
Efficiency
Test Setup and Results
www.ti.com
Table 4. EVM Connectors and Test Points (continued)
Reference
Function
Designator
TP5
Output voltage test point at OUT connector
TP6
Test point between voltage divider network and R1. Used for loop response
measurements.
measurements.
The TPS5430EVM-342 efficiency peaks at load current of about 0.8 A, and then decreases as the load
current increases towards full load.
current increases towards full load.
shows the efficiency for the TPS5430EVM-342 at an ambient
temperature of 25
°
C. The efficiency is lower at higher ambient temperatures, due to temperature variation
in the drain-to-source resistance of the MOSFETs.
Figure 1. Measured Efficiency, TPS5430
TPS5430EVM-342 2.25-A, Inverting Buck-Boost Regulator Evaluation Module
4
SLVU243 – May 2008