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Overview
| Topology | Other Topology |
| IC revision | A |
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 series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | RDC max.(mΩ) | Wire Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 6.8 µH, 22 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance6.8 µH | Performance Rated Current22 A | Saturation Current @ 10%13 A | Saturation Current @ 30%27 A | DC Resistance4.1 mΩ | Self Resonant Frequency24 MHz | MaterialWE-PERM 2 | DC Resistance4.428 mΩ | – | ||||
 | WE-HCF SMT High Current Inductor, 7 µH, 19.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance7 µH | Performance Rated Current19.5 A | Saturation Current @ 10%27 A | Saturation Current @ 30%30 A | DC Resistance5.61 mΩ | Self Resonant Frequency18 MHz | MaterialMnZn | DC Resistance6.17 mΩ | Wire TypeFlat | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 7.3 µH, 16.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance7.3 µH | Performance Rated Current16.5 A | Saturation Current @ 10%5.5 A | Saturation Current @ 30%12 A | DC Resistance5.9 mΩ | Self Resonant Frequency28 MHz | MaterialWE-PERM | DC Resistance6.49 mΩ | – | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 7.6 µH, 22.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance7.6 µH | Performance Rated Current22.8 A | Saturation Current @ 10%19 A | Saturation Current @ 30%22 A | DC Resistance3.75 mΩ | Self Resonant Frequency20 MHz | MaterialMnZn | DC Resistance4 mΩ | – | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 10 µH, 16.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance10 µH | Performance Rated Current16.5 A | Saturation Current @ 10%10 A | Saturation Current @ 30%21.5 A | DC Resistance6.9 mΩ | Self Resonant Frequency14 MHz | MaterialWE-PERM 2 | DC Resistance7.452 mΩ | – | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 10 µH, 16.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance10 µH | Performance Rated Current16.4 A | Saturation Current @ 10%8.8 A | Saturation Current @ 30%18.5 A | DC Resistance6.9 mΩ | Self Resonant Frequency16 MHz | MaterialMnZn | DC Resistance7.45 mΩ | – | ||||
| WE-HCF SMT High Current Inductor, 10 µH, 16.15 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance10 µH | Performance Rated Current16.15 A | Saturation Current @ 10%22 A | Saturation Current @ 30%23 A | DC Resistance7.96 mΩ | Self Resonant Frequency13 MHz | MaterialMnZn | DC Resistance8.76 mΩ | Wire TypeFlat |