Schottky Rectifiers offer minimal conduction losses.
December 16, 2011 -
Series NTST30100CTG, NTST20100CTG and NTSB20U100CTG utilize trench topology that enables forward voltage drop and reduced leakage current, resulting in low conduction losses and improvement in circuit efficiency. Structure creates pinch-off effect under reverse bias, resulting in minimized leakage current. With optimal switching across operating junction temperature of -40 to +150°C, rectifiers are suited for flat panel displays, reverse battery protection circuits, and DC-DC converters.
Original Press release
ON Semiconductor, LLC
5005 E. McDowell Rd.
Phoenix, AZ, 85008
USA
ON Semiconductor's New Family of Trench-Based Low Forward Voltage Schottky Rectifiers Deliver Improved Switching Efficiency
New devices offer minimal conduction losses, strong temperature stability and high surge current resilience for computing and consumer applications
PHOENIX, Ariz. - ON Semiconductor (Nasdaq: ONNN), a premier supplier of high performance silicon solutions for energy efficient electronics, has introduced of a new family of 100 volt (V) trench-based low forward voltage Schottky rectifiers (LVFR) for applications such as switching power supplies for notebook adapters or flat panel displays, reverse battery protection circuits, and high frequency DC-DC converters.
The new NTST30100CTG, NTST20100CTG and NTSB20U100CTG family of devices utilize a trench topology that enables exceptionally low forward voltage drop and reduced leakage current. This results in low conduction losses and a substantial improvement in circuit efficiency - helping design engineers achieve regulatory requirements without the added complexity, such as synchronous rectification.
This LVFR family utilizes a trench MOS structure that enables an enhanced conduction zone under forward bias, resulting in 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.
To demonstrate the advantages of LVFR's, the company compared the performance of its 30A, 100V LVFR (NTST30100SG) with a standard 30A, 100V planar Schottky rectifier. Data measured in a 65W power adapter showed a 1% efficiency improvement using LVFR versus planar Schottky. This significant increase in efficiency can allow the power supply designer to meet regulatory requirements without the added complexity and cost of solutions, such as synchronous rectification.
"As our customers continuously strive to achieve higher efficiencies in their product designs, older planar generations of Schottky rectifiers simply cannot cost effectively deliver the performance and efficiency of the trench LVFR family," said John Trice, senior director and general manager of ON Semiconductor's Power Discrete Division. "LVFR's superior forward voltage drop and reverse leakage performance over extended temperature ranges exceed our customer's demanding specifications for power efficiency improvement", he added.
The table below lists the new ON Semiconductor LVFR devices and their respective typical performance characteristics.
ON Semiconductor
P/N Description Package VF (V) at
IF =5A and TJ=125°
NTST30100SG TO-220 AB
NTSB30100S-1G 30-A (30A X 1) I2PAK 0.39
NTST30U100CTG
NTSB30U100CT-1G
NTST30U100CTH 30-A common cathode (15A X 2) TO-220 AB
(H->Halide Free) I2PAK
TO-220 AB 0.42
NTST30100CTG
NTSB30100CT-1G 30-A common cathode (15A X 2) TO-220 AB
NTST30100CTH (H->Halide Free) I2PAK
TO-220 AB 0.45
NTST20100CTG
NTSB20100CT-1G 20 -A common cathode (10A X 2) TO-220 AB
I2PAK 0.5
NTST20U100CTG
NTSB20U100CT-1G 20 -A common cathode (10A X 2) TO-220 AB
I2PAK 0.5
About ON Semiconductor
ON Semiconductor (Nasdaq: ONNN) 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. For more information, visit http://www.onsemi.com.
ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its Web site in this news release, such information on the Web site is not to be incorporated herein.
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