Automotive-Qualified 200 V Qspeed Diodes from Power Integrations Excel in Audio Amplifiers

Low-noise, high-efficiency,AEC-Q101 diodes solve thermal, EMI and distortion challenges in power amplifiers

San Jose, Calif. – September10, 2019–Power Integrations (Nasdaq: POWI),the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced that its 200 V Qspeed™ diodes – LQ10N200CQ and LQ20N200CQ – are now available with AEC-Q101automotive qualification. Qspeed silicon diodes use merged-PIN technology to offer a unique balance of soft switching and low reverse recovery charge (Qrr). This results in low EMI and reduced output noise,which is especially important for in-vehicle audio systems.

The newly qualified200 V diodes feature the industry’s lowest reverse recovery charge, typically32.4 nC at T_J of 125°C, and a diode softness ratio of 0.39. This minimizes high-frequency EMI inherent in theSchottky rectifiers often used in Class-D power amplifier output stages.Dual 10 A and 20 A common-cathode diodes are housed in the industry-standard, rugged DPAK TO-252 package.

Comments Edward Ong, product marketing manager at Power Integrations: “The automotive audio industry has been clamoring for an alternative to Schottky diodeswith their ‘snappy’ reverse recovery, which causes ringing that generates EMI and noise in sensitive Class D amplifiers. Our automotive-qualified 200 V QSpeed diodes are the perfect solution for in-car audio amplification applications.”

The LQ10N200CQ and LQ20N200CQ diodes are produced in IATF 16949-certified facilities. Devices are available now;the LQ10N200CQ and LQ20N200CQare priced at $0.60 and $0.74 respectivelyin 10,000 quantities. Technical support is available from the Power Integrations website at:http://www.power.com/products/qspeed-q-series.