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New HVIC choices offer improved noise immunity and performance

Posted: 16 Sep 2010 ?? ?Print Version ?Bookmark and Share

Keywords:high voltage gate drive IC? power IC?

Power engineers creating motor and industrial applications (i.e. motor drive inverters, distributed power supplies, telecom system power supplies) benefit from using high-voltage gate driver solutions which offer improved noise immunity and increased performance, while being pin-compatible to solutions currently available.

Fairchild Semiconductor delivers these requirements by offering designers new choices in high voltage gate drive ICs (HVICs), including the FAN7392 (2-input, 2-output/high and low side gate driver with shutdown function), the FAN7393 (1-input, 2-output/half bridge with shutdown and controllable dead time), the FAN73932 (1-input, 2-output / half bridge with shutdown and fixed dead time control) and the FAN73933 (2-input, 2-output/half bridge with controllable dead time).

These devices are members of the FAN739x series which have an innovative common-mode dv/dt noise canceling circuit ensuring stable functioning of the high voltage gate driver under high dv/dt noise circumstances and offering improved noise immunity over other competitive solutions. The devices likewise feature an advanced level shift circuit that gives high-side gate driver operation with negative VS swings of up to -9.8V (at VBS=15V), where Vs is the high voltage floating supply return and VBS is the high side floating supply voltage.

Furthermore, the FAN739x series delivers stable operation over a wide temperature range of -40 to 125 degrees C. The series also possess floating channels for bootstrap operation to +600V, built-in under-voltage lockout for VBS, and matched propagation delay for both channels. These devices also do away with a buffer transistor if compared with other low current HVICs on the market.

Other devices in the series include the FAN7390 (2-input, 2-output/high & low side gate driver), and the FAN73901 (2-input, 2-output/high & low side gate driver). Available in 8-pin DIP, 8-pin SOP, 14-pin SOIC and 16-pin SOIC packages, devices in the series are pin-compatible with existing solutions, making it an ready replacement in almost any design or component.

Pricing and availability: (each in 1000 units and US$) FAN7392 / FAN7393 / FAN73932 / FAN73933 = $1.52; Samples are available now, with delivery in 12 weeks ARO.

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