IC manufacturers Texas Instruments

IC manufacturers (97)

Texas Instruments TPA3251 | Demoboard SLAA701A

LC Filter Design

Overview

TopologyOther Topology
IC revisionA

Description

In higher-power class-D amplifiers, generally above 10 W of output power, a filter on the output of theamplifier is required. The filter is passive in nature and uses both an inductor and a capacitor on eachoutput terminal. Therefore, it is referred to as an LC filter. Proper component selection of the LC filter iscritical to meet the desired audio performance, efficiency, EMC/EMI requirements, and cost for the endapplication. This application report serves as a guide to aid in the section of LC filter components forclass-D amplifiers to meet target-design goals of the end system.

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
Wire Type Samples
7443556680SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 6.8 22 13 27 4.1 24 WE-PERM 2 4.428
7443630700SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCF SMT High Current Inductor 7 19.5 27 30 5.61 18 MnZn 6.17 Flat
7443551730SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 7.3 16.5 5.5 12 5.9 28 WE-PERM 6.49
7443557760SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 7.6 22.8 19 22 3.75 20 MnZn 4
74435561100SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 10 16.5 10 21.5 6.9 14 WE-PERM 2 7.452
74435571100SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 10 16.4 8.8 18.5 6.9 16 MnZn 7.45
7443631000SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCF SMT High Current Inductor 10 16.15 22 23 7.96 13 MnZn 8.76 Flat
Order Code Data­sheet Simu­lation
7443556680SPEC
7443630700SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

7443551730SPEC
7443557760SPEC
74435561100SPEC
74435571100SPEC
7443631000SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
Wire Type Samples