Texas Instruments TPA3244, Руководство пользователя, Страница: 14 / 28

Watts
TH
D
+ N
(%)
0.01 0.1 1 10 100 200
0.001
0.01
0.1
1
10
D001
MA5172-AE 10
P
H
UA8013-AL 7
P
H Dual Inductor
UA8014-AL 10
P
H Dual Inductor
Optional Inductors
www.ti.com
14 SLVUAT5 – November 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
TPA3244 Evaluation Module
4 Optional Inductors
The TPA3244EVM includes component pads for optional output inductors L8 and L9. These pads fit
Coilcraft inductors UA8013-AL (7 µH) and UA8014-AL (10 µH). These dual-core inductors provide
extremely high performance in a small footprint to help shrink the solution size and cost. If using L8 and
L9, make sure to de-solder L2, L3, L4, and L5 first.
The plot in Figure 5 shows THD + N vs. output power for the TPA3245EVM (Pad-Up version of the
TPA3244) using the standard toroid inductors and the Coilcraft UA8013-AL (7 µH) and UA8014-AL (10
µH).
Figure 5. TPA3245EVM THD + N vs Output Power 30 V, BTL 4
Ω
, 600 kHz