SESSION 3 Amplifiers and Analog Front-Ends.pdf

1、ISSCC 2025SESSION 3Amplifiers and Analog Front-Ends 2025 IEEE International Solid-State Circuits Conference1 of 473.1:A 121.3dB-DR,115dB-PSNR Digital-Input Capacitive-Feedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)ModulationA 121.3dB-DR,115dB-PSNR Digital-Input Capacitive-F

2、eedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)ModulationJhuang-Wei Cyue,Tai-Haur KuoDepartment of Electrical EngineeringNational Cheng Kung UniversityTainan,Taiwan 2025 IEEE International Solid-State Circuits Conference2 of 473.1:A 121.3dB-DR,115dB-PSNR Digital-Input Capaci

3、tive-Feedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)ModulationOutline Motivation and Prior Arts Review Double-Sided Voltage-Boosting(DSVB)Modulation Implementation Measurement Results Conclusion 2025 IEEE International Solid-State Circuits Conference3 of 473.1:A 121.3dB-DR,

4、115dB-PSNR Digital-Input Capacitive-Feedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)ModulationVINPowerStagePWMVBATClass-D Audio Amplifier(CDA)Available battery voltage(VBAT)ranges from 2.5 to 4.2VLimited maximum output power(POUT)Switching operation of the power stageHigh ef

5、ficiency of 90%2025 IEEE International Solid-State Circuits Conference4 of 473.1:A 121.3dB-DR,115dB-PSNR Digital-Input Capacitive-Feedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)ModulationPVDDVBATLDC-DC Converter VINPower StagePWMCDA+DC-DC Converter Boosts supply voltage(PVD

6、D)for higher CDAs output voltage Boosted maximum POUT Two-stage power deliveryPoor boost efficiency of 80%2025 IEEE International Solid-State Circuits Conference5 of 473.1:A 121.3dB-DR,115dB-PSNR Digital-Input Capacitive-Feedback Class-D Audio Amplifier with Double-Sided Voltage-Boosting(DSVB)Modula