# 400W Class-D Audio Amplifier ## Description Mono 400 W / 8 Ω high-voltage IRS2092S-family Class-D amplifier for external ±85 V main rails and external auxiliary rails. ## Project Details - **Owner:** chrisdesigns2345 - **Created:** 8/6/2026 - **Last Updated:** 8/7/2026 - **Visibility:** Public ## Key Components ### D1 — [SF302DS](https://www.flux.ai/lcsc/sf302ds~mz6n.md) - Manufacturer Name: 晶导微电子 - Functional Group: Gate Drive - LCSC Part Number: C668268 - Manufacturer Part Number: SF302DS - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Shandong-Jingdao-Microelectronics-SF302DS_C668268.pdf - Part Type: Diodes - Fast Recovery Rectifiers - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Diodes-Rectifiers-Hyperfast_Shandong-Jingdao-Microelectronics-SF302DS_C668268.html - Package or Case Code: TO-252-2_L6.5-W6.1-P4.58-LS10.0-BR **Pins:** - A [pin 1] - A [pin 3] - K [pin 4] ### D2 — [BAV21W-7-F](https://www.flux.ai/lcsc/bav21w-7-f~xkz1.md) - Manufacturer Name: DIODES(美台) - Part Type: Switching Diode - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1807271839_Diodes-Incorporated-BAV21W-7-F_C155214.pdf - Functional Group: Protection - Product Info Url: https://lcsc.com/product-detail/Switching-Diode_DIODES_BAV21W-7-F_BAV21W-7-F_C155214.html - LCSC Part Number: C155214 - Role: Protection - Package or Case Code: SOD-123_L2.8-W1.8-LS3.7-RD - Role Details: IRS2092S CSH 200 V reverse-blocking diode; cathode to Q1 drain/+85V, anode to sense divider - JLCPCB Part Class: Extended Part - Manufacturer Part Number: BAV21W-7-F **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [DB126V-5.0-3P-GN](https://www.flux.ai/jharwinbarrozo/db126v-5p0-3p-gn~6j.md) - Part Type: Connector - Manufacturer Part Number: DB126V-5.0-3P-GN - Manufacturer Name: DIBO - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: External Power - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_DIBO-DB126V-5-0-3P-GN_C395850.pdf **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J2 — [NC3FAH2](https://www.flux.ai/silicon-yard/nc3fah2.md) - Manufacturer Name: Neutrik - Manufacturer Part Number: NC3FAH-2 - Part Type: Connectors - Functional Group: Balanced Input - Package or Case Code: TO - Mount: PCB - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/e5cf95e5433f4cab7a15b1174c9cc7458287c19b1a687f35a77e79d19f258f4b.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 5 [pin 5] - 6 [pin 6] - G [pin 4] ### J3 — [1868076](https://www.flux.ai/silicon-yard/1868076.md) - Compliance: Green - Manufacturer Part Number: 1868076 - Datasheet URL: https://www.phoenixcontact.com/en-us/products/printed-circuit-board-terminal-mkds-5-2-762-1868076?type=pdf - Mount: Screw - Functional Group: Speaker Output - Manufacturer Name: Phoenix Contact - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [282836-5](https://www.flux.ai/adrian95/282836-5~b5w.md) - Manufacturer Part Number: 282836-5 - Functional Group: Auxiliary and Control - Datasheet URL: https://www.verical.com/datasheet/te-connectivity-terminal-blocks-282836-5-47342.pdf - Manufacturer Name: TE Connectivity AMP Connectors - Part Type: Connector - Role: Auxiliary Power and Control - Role Details: Ground-referenced external rails: pin1 +12V_AUX (VAA), pin2 -5V_AUX (VSS), pin3 SGND; pins4/5 CSD control access - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J5 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Role Details: External floating gate-drive supply: pin 1 = VCC_AUX_12V_ABOVE_NEG85, pin 2 = -85V_COM; must provide 10-18 V pin1-to-pin2 - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Role: Auxiliary Power Input - Manufacturer Part Number: XY301V-A-5.0-2P - Functional Group: Auxiliary and Control - Part Type: Connector - Manufacturer Name: Ningbo Xinlaiya Elec. **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### Q1 — [XRS30N20F](https://www.flux.ai/silicon-yard/xrs30n20f~gw.md) - Symbol Style: parametric-v1 - Part Type: MOSFETs - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/8165bfa5edec85c558179763abed0bab853a61073ac766627bd11de4388ff8ad.pdf - LCSC Part Number: C53454482 - JLCPCB Part Class: Extended Part - Functional Group: Half Bridge - Package or Case Code: PDFN-8_L5.6-W5.2-P1.27-LS6.1-BL - Product Info Url: https://www.lcsc.com/product-detail/C53454482.html?s_z=n_q_XRS30N20F%2520&spm=wm.fly.bg.0.xh&lcsc_vid=RgIKU1NUFVVfVwJVRQRdVAZXTlJZAgEFE1hcAwAHT1IxVlNeQlVYVFRSRFdaXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4eFQsCAgIaSgADAwAHC0slRVZZXlBRQk8GEwkK - Manufacturer Name: XNRUSEMI - Manufacturer Part Number: XRS30N20F **Pins:** - D [pin 5] - D [pin 9] - D [pin 7] - D [pin 6] - D [pin 8] - G [pin 4] - S [pin 3] - S [pin 2] - S [pin 1] ### Q2 — [XRS30N20F](https://www.flux.ai/silicon-yard/xrs30n20f~gw.md) - LCSC Part Number: C53454482 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: XRS30N20F - Product Info Url: https://www.lcsc.com/product-detail/C53454482.html?s_z=n_q_XRS30N20F%2520&spm=wm.fly.bg.0.xh&lcsc_vid=RgIKU1NUFVVfVwJVRQRdVAZXTlJZAgEFE1hcAwAHT1IxVlNeQlVYVFRSRFdaXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4eFQsCAgIaSgADAwAHC0slRVZZXlBRQk8GEwkK - Manufacturer Name: XNRUSEMI - Package or Case Code: PDFN-8_L5.6-W5.2-P1.27-LS6.1-BL - Symbol Style: parametric-v1 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/8165bfa5edec85c558179763abed0bab853a61073ac766627bd11de4388ff8ad.pdf - Part Type: MOSFETs - Functional Group: Half Bridge - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D [pin 5] - D [pin 9] - D [pin 7] - D [pin 6] - D [pin 8] - G [pin 4] - S [pin 3] - S [pin 2] - S [pin 1] ### RS1 — [HoJLR2512-3W-10mR-1%](https://www.flux.ai/lcsc/hojlr2512-3w-10mr-1percent~3edy.md) - Part Type: Chip Resistor - Surface Mount - License: https://creativecommons.org/licenses/by/4.0/ - LCSC Part Number: C2903468 - Functional Group: Protection - JLCPCB Part Class: Extended Part - Manufacturer Part Number: HoJLR2512-3W-10mR-1% - Package or Case Code: RES-SMD_L6.4-W3.2-R2512 - Resistance: 10mΩ - Resistor Type: Current Sense Resistors / Shunt Resistors ROHS - Power: 3W - Datasheet URL: https://www.lcsc.com/datasheet/C2903468.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1RaVFZRRVRaUjsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Tolerance: ±1% - Manufacturer Name: Milliohm(毫欧) **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [IRS2092S](https://www.flux.ai/kicad-part-library/irs2092s~1vf.md) - Datasheet URL: http://www.infineon.com/dgdl/irs2092.pdf?fileId=5546d462533600a401535675f1be2790 - Role Details: Single-channel MONOBLOCK IRS2092S controller; external VAA/VSS about SGND and external VCC about -85V_COM; no onboard rail generation - Package or Case Code: SOIC-16_3.9x9.9mm_P1.27mm - Manufacturer Name: Infineon Technologies AG - Functional Group: PWM Controller - Manufacturer Part Number: IRS2092S **Pins:** - COM [pin 10] - COMP [pin 4] - CSD [pin 5] - CSH [pin 16] - DT [pin 9] - GND [pin 2] - HO [pin 14] - IN- [pin 3] - LO [pin 11] - OCSET [pin 8] - VAA [pin 1] - VB [pin 15] - VCC [pin 12] - VREF [pin 7] - VS [pin 13] - VSS [pin 6] ### U2 — [OPA1632DR](https://www.flux.ai/vasy_skral/opa1632dr~yx9.md) - Manufacturer Part Number: OPA1632DR - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Name: Texas Instruments - Functional Group: Balanced Input - Datasheet URL: https://www.ti.com/lit/ds/symlink/opa1632.pdf **Pins:** - ENABLE [pin 7] - V- [pin 6] - V+ [pin 3] - VIN- [pin 1] - VIN+ [pin 8] - VOCM [pin 2] - VOUT- [pin 5] - VOUT+ [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/chrisdesigns2345/400w-class-d-audio-amplifier~zx](https://www.flux.ai/chrisdesigns2345/400w-class-d-audio-amplifier~zx).* --- *Generated from [https://www.flux.ai/chrisdesigns2345/400w-class-d-audio-amplifier~zx](https://www.flux.ai/chrisdesigns2345/400w-class-d-audio-amplifier~zx)*