Power Integrations Unveils Industry’s Lowest Reverse Recovery Charge
Power Integrations has introduced its new 600V 12A Qspeed diode, which they claim has the industry’s lowest reverse recovery charge (Qrr) for a silicon diode.
The diode has a Qrr of just 14nC at +25˚C, enhancing the efficiency of the power factor correction (PFC) stage in on-board chargers and reducing the heat generated by PFC MOSFETs. This new diode, known as the AEC-Q101-qualified QH12TZ600Q, matches the low-switching losses of silicon carbide (SiC) devices but without the higher costs associated with SiC technology.
Edward Ong, a senior product marketing manager at Power Integrations, stated, “The Qrr of these new Qspeed diodes is half that of the next best ultra-fast silicon diodes, leading to very high system efficiency. This is crucial for automotive on-board charger applications, which require higher switching frequencies to minimize volume and weight. These diodes enable the replacement of SiC devices.”
The Qspeed diodes use a combination of PiN and Schottky diode technology to deliver their performance. Their smooth reverse recovery current transition not only boosts efficiency but also cuts down on electromagnetic interference (EMI) and peak reverse voltage stress. This eliminates the need for additional snubbers when employed as output rectifiers in on-board chargers.
These diodes come in a 2.5kV isolated TO-220 package, allowing direct mounting to metal heat sinks for better thermal performance. They are priced at $1.17 each for orders of 10,000 pieces. Authorized distributors worldwide include Digikey, Farnell, Mouser, and RS Components.
