Power Integrations’ BridgeSwitch™ family of integrated half-bridge motor-driver ICs feature advanced 600V N-channel power switches and sensing capability which enable the inverter in a Brushless DC motor-drive application to achieve efficiency of up to 99.2%
This high efficiency and the distributed thermal footprint of the BridgeSwitch IC eliminate the need for a heat-sink, reducing both the cost and weight of motor-drive applications and other high-voltage systems.
BridgeSwitch ICs feature high- and low-side FREDFETs (Fast Recovery Diode Field Effect Transistors) with integrated lossless current sensing. These self-powered driver ICs can drive single- or multi-phase high-voltage, synchronous or asynchronous motors with power ratings of up to 400W, and support all popular motor-control algorithms.
The motor-driver ICs feature cycle-by-cycle hardware-based over-current, over-/under-voltage, and over-temperature protection features which eliminate the software component from many protection functions. This simplifies IEC 60335 and 60730 certification, saving development time and cost.
Featuring built-in system monitoring, the drivers have a robust single-wire preventive-maintenance interface which enables communication between the motor’s microcontroller and up to three BridgeSwitch devices. Each BridgeSwitch driver may be configured with different high- and low-side current limits, eliminating the role of the microcontroller and external circuitry in protecting the system from open or shorted motor windings.