10A high efficiency Schottky rectifiers for smaller designs

April 28, 2014 // By Graham Prophet
This product claims ultra-low forward voltages and high current density in the thinnest package available for this product category – making it an optimal choice for smartphone and tablet chargers

NXP Semiconductors’ first 10A, 45V Schottky barrier rectifiers PMEG45U10EPD and PMEG45A10EPD come in the new CFP15 (SOT1289) package. This Clip FlatPower Package (designed for I f max up to 15A) has very compact dimensions with a body size of 4.3 x 5.8 mm and a height of 0.8 mm, making it thinner than the pin-compatible PowerDI5 and SMPC (TO-277A) rectifier package available on the market today. This small form factor combined with a high electrical performance make PMEG45U10EPD and PMEG45A10EPD the optimal choice for next generation smartphone and tablet power adapters. Applications include SMPS / DC-to-DC converters, polarity protection and high-speed switching.

The 10 A Schottky rectifiers provide a low forward voltage drop of 350 mV at 10A forward current and 85°C junction temperature, thereby reaching increased efficiency levels and high output power ratings needed for fast charging cycles. With high peak current capabilities and a guaranteed breakdown voltage of more than 45V, the new devices meet the safety demands of up to 15W chargers with 5V output voltage. PMEG45A10EPD is optimised for low V F and low IR and boosts a capacitance of only 900 pF (typ.) at 1V. PMEG45U10EPD is optimised for lowest V F and has a capacitance rating of 1200 pF (typ.) at 1V.

The CFP15 package design has a solid clip and exposed heat sink to help reduce the package’s thermal resistance and optimise the transfer of heat into the ambient environment; allowing for smaller and thinner charger designs. The front sides of the package leads are also tin-plated and 100% solderable, enabling optical solder inspection.

Wolfgang Bindke, product manager diodes, NXP Semiconductors adds, “Over the course of 2014 and 2015 we will extend the portfolio with further Schottky rectifiers up to 60V and 15A . Manufacturers of power adapters as well as automotive suppliers are keen to see smaller and more efficient modules in the coming years.”

NXP; www.nxp.com/pip/PMEG45U10EPD.html / www.nxp.com/pip/PMEG45A10EPD.html