ON Semiconductor and its New LVFR Family

Published:2011/12/15 0:56:00 Author:Phyllis From:SeekIC

To meet the requirements for applications such as switching power supplies for notebook adapters or flat panel displays, reverse battery protection circuits, and high frequency DC-DC converters, ON Semiconductor has introduced a new family of 100 volt trench-based low forward voltage Schottky rectifiers (LVFR).

The new LVFR, which includes NTST30100CTG, NTST20100CTG and NTSB20U100CTG, utilizes trench topology that enables exceptionally low forward voltage drop and reduces leakage current. Resulting in low conduction losses and a substantial improvement in circuit efficiency, it helps design engineers achieve regulatory requirements without the added complexity like synchronous rectification.

The trench MOS structure enables an enhanced conduction zone under forward bias, causes significant reduction in forward voltage drop. Under reverse bias, this structure creates a pinch-off effect resulting in reduced leakage current. Unlike planar Schottky rectifiers, the LVFR’s switching performance is strong across their entire operating junction temperature range of -40°C to +150 °C.

ON Semiconductor compared the performance of its 30A, 100V LVFR (NTST30100SG) with a standard 30A, 100V planar Schottky rectifier to demonstrate the LVFR’s advantages. Data measured in a 65W power adapter showed a 1% efficiency improvement using LVFR versus planar Schottky.

With the continuous increase of requirement in product designs, older planar generations of Schottky rectifiers simply cannot cost effectively deliver the performance and efficiency of the trench LVFR family. LVFR’s superior forward voltage drop and reverse leakage performance over extended temperature ranges exceed customer’s demanding specifications for power efficiency improvement.

About ON Semiconductor

ON Semiconductor is a premier supplier of high performance silicon solutions for energy efficient electronics. The company’s broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications. ON Semiconductor operates a world-class, value-added supply chain and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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