Sensors

Hall-effect sensor IC suits brushless motor designs

23rd December 2013
Nat Bowers

Well-suited for demanding, cost-sensitive and high-volume applications, Honeywell Sensing and Control have introduced the SS360PT and SS460P high sensitivity latching Hall-effect sensor ICs with built-in pull-up resistors. Typical applications for the high performance, economical sensors include commuting brushless DC motors used for medical equipment and appliances as well as for flow-rate sensing, speed and RPM sensing, tachometers, counter pickups, motor and fan controls.

Operating over a temperature range from -40 to +125°C (-40 to +257°F), the sensor ICs provide reliable switching points with a high magnetic sensitivity of 30 Gauss typical, at 25°C (77°F), and 55 Gauss over the full temperature range. This allows for the use of smaller magnets or a wider air gap.

In order to provide a cleaner output signal and a faster latch response time, the SS360PT and SS460P do not use chopper stabilization on the Hall element, as competitive, chopper-stabilized, high sensitivity Hall-effect bipolar latching sensor ICs. Latching magnetics make these sensors well-suited for accurate speed sensing and RPM measurements. Operating over a voltage range from 3-24V DC, the Hall-effect sensors are suitable for a variety of applications and feature built-in reverse voltage capability to enhance the protection of the sensor and the circuits.

Joshua Edberg, Senior Global Marketing Manager, Magnetic Sensors division, Honeywell Sensing and Control, commented: “The new SS360PT and SS460P are the industry’s best solutions for brushless dc motor manufacturers that need latching sensors with reliable, consistent performance. Honeywell’s new High Sensitivity Hall-Effect Latching Sensor ICs with built-in pull-up resistors are less costly and more compact for brushless motor designs.”

The SS360PT is supplied in a SOT-23 surface mount package enabling compact design with automated component placement, while the SS460P is available in a small, leaded, flat TO-92-style package which allows for a compact PC board layout design. The SS360PT is supplied on tape and reel (3000 units per reel), while the SS460P in a bulk package (1000 units per bag). Please contact Honeywell for pricing.

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