Texas Instruments TPS78101EVM-339 Evaluation Module TPS78101EVM-339 TPS78101EVM-339 데이터 시트
제품 코드
TPS78101EVM-339
4
Test Results
5
Board Layout, Schematic, and Bill of Materials
5.1
Board Layout
www.ti.com
Test Results
This section provides typical performance waveforms (
through
) using the
TPS78101EVM-339 printed circuit board.
Figure 1. Startup from Enable, TPS78101,
Figure 2. Load Transient, TPS78101, V
I
= 3.6
V, VOUT = 3.0 V, IOUT = 100 mA to 150 mA to
V
I
=5.5 V, VOUT=3.0 V, R
LOAD
= 22
Ω
100 mA
Figure 3. Low to High Output Transient,
Figure 4. High to Low Output Transient,
TPS781330220 (VOUT = 2.2 V to 3.3 V, R
LOAD
TPS781330220 (VOUT = 3.3 V to 2.2 V, R
LOAD
=
= 22
Ω
)
22
Ω
)
This section provides the TPS78101EVM-339 board layout, schematic, and bill of materials.
Board layout is critical for all power supplies. Without a carefully planned layout, the regulator could show
poor performance or stability problems caused by incorrect routing of the PWB traces. All main current
and return paths should use wide and short traces. The input and output capacitor should be placed as
close as possible to the IC. Use a common ground node for power ground to minimize the effects of
ground noise.
poor performance or stability problems caused by incorrect routing of the PWB traces. All main current
and return paths should use wide and short traces. The input and output capacitor should be placed as
close as possible to the IC. Use a common ground node for power ground to minimize the effects of
ground noise.
through
show the board layout for the TPS78101EVM PCB.
SLVU242 – April 2008
TPS78101EVM-339
3