A new member of Atmel's family of driver ICs, the ATA6821, is a single-channel high-speed power driver IC which is used for automotive-dedicated standard products as well as for full-custom ICs. Applications include electric motors for industrial machines as well as automotive systems.
The power driver IC ATA6821 is dedicated to handle high currents as can be found in electrical machines or in power converters. According to the manufacturer, the device activates low-resistance switching devices like power MOSFETs or IGBTs and supports especially the use of a potential-free input signal generated by a transformer. With an integrated push-pull output stage, it can drive peak currents of up to 4 A, whereby the output stage features an on-resistance of less than 2 Ω at 150°C junction temperature. The device's second output, the positive feedback output, enables potential-free operation.
To achieve a functionality similar to the ATA6821, Atmel says that designers would need to build a motor drive system including discrete and standard devices. The ATA6821 is the first device that enables the driving of motors in industrial applications with only one single IC, it claims. This simplifies the end system design and reduces the bill of materials.
The device also provides an extremely short propagation delay from input to output of 50 ns and super fast slew rates of only 12 ns. This minimises heat dissipation in high power switching devices.
For more information contact Arrow Altech Distribution, 011 923 9600 or Memec SA, 011 897 8600.
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