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Zetex Launches Bipolar Gate Drivers
May 20, 2008 |Estimated reading time: 1 minute
HAUPPAUGE, N.Y. Zetex Semiconductors released the ZXGD3000 series of bipolar gate drivers, a lower-cost device that is designed for faster charging and discharging of gate capacitances than gate driver ICs. Reported benefits include faster switching times and greater circuit efficiency for switching MOSFETs and IGBTs used in power supplies and motor drives.
There are four high-speed, non-inverting gate drivers in the ZXGD3000 series. Each is available in an optimized, six-lead SOT23 package that enables reduced component counts and increased power densities. A flow-through design approach puts inputs and outputs on opposite sides of the device, simplifying PCB layout and helping minimize trace inductance.
ZXGD3000 drivers cover a supply voltage range of 12 to 40 V, with sinking currents up to 9 A. A fast switching emitter-follower configuration achieves propagation delays of less than 2 nsec. Rise/fall times of approximately 10 nsec. enable improved control of MOSFET switching performance.
High current gain and low input current requirements allow direct interface with low-power controller ICs, removing the need for additional buffer circuitry. Independent source and sink output pins permit designers to control gate rise and fall times separately. ZXGD3000 drivers also prevent latch-up and eliminate shoot-through, improving circuit reliability and EMI performance.
For more information, visit www.zetex.com.