Power Integrations BridgeSwitch™­ Family

Author : Power integrations Published Time : 2019-02-13
Power Integrations BridgeSwitch Family are the high-voltage, self-powered, and Integrated Half-Bridge (IHB) motor drivers. The BridgeSwitch family dramatically simplifies the development and production of high-voltage inverter-driven 2- or 3-phase PM or BLDC motor drives. These motor drives incorporate two high-voltage N-channel power FREDFETs with low and high-side drivers in a single small-outline package. The internal power FREDFETs offer ultra-soft and ultra-fast diodes ideally suited for hard switched inverter drives. Both drivers are self-supplied eliminating the need for an external auxiliary power supply. BridgeSwitch provides a unique instantaneous phase current output signal simplifying the implementation of sensor-less control schemes. The low-profile, compact footprint surface mount package offers extended creepage distances and allows heat sinking of both power FREDFETs through the printed circuit board.

Features

Highest performance and design flexibility:
Fully integrated half-bridge stage with up to 98% efficiency:
Eliminates external heat sink at rated continuous RMS current600V N-channel power FREDFETs:
Ultra-soft and a fast recovery diodeAccurate instantaneous phase current information output (BRD126X):
Eliminates external sensing and amplification circuitrySelf-biased low-side and high-side drivers:
Eliminates the need for an auxiliary power supplySmall footprint surface mount in SOP-24C package:
Exposed pads enable heat sinking through PCBControlled FREDFET switching speed reduces EMIEnhanced safety and reliability:Adustable cycle-by-cycle current limit for both FREDFETs:
Fail-safe operationInternal dual level thermal overload protectionSelf-configuring system level monitoring input:
Four level DC bus undervoltageDC bus overvoltageSystem temperatureAdaptive dead timeSimultaneous conduction lockout protection

Applications

2- or 3-phase high-voltage PM and BLDC motor drivesUp to 300W typical inverter output power
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