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New Product Introduction

NPI Body

Power Integrations BridgeSwitch™

HV, self-powered, half-bridge motor drive with device protection and system monitoring

The BridgeSwitch™ family of integrated half-bridges feature high- and low-side FREDFETs (Fast Recovery Diode Field Effect Transistors) with integrated lossless current sensing, resulting in the inverter conversion efficiency of up to 99.2% in brushless DC (BLDC) motor drive applications up to 400 W. Superior efficiency along with the distributed thermal footprint eliminates the need for a heatsink, reducing both system cost and weight. Integrated lossless current sensing, bus voltage sensing, and system-level thermal sensing make this device family ideal for BLDC motors.

Key features

Heat-sink less design up to 400 W
Self supplied, no need of external PSU
600 V FREDFETs with integrated lossless current sensing
Simplifies system level safety certification, Class A rated control software possible

Additional features

600 V Integrated FREDFETs (Fast Recovery Diode Field Effect Transistors)
- Allows up to 99.2% inverter efficiency and low EMI
No heat-sink required for up to 400 W
Fully self-supplied simplifies system auxiliary power supply
Low and high-side cycle-by-cycle current limit simplifies system-level certification
Integrated HV gate drivers, tuned to drive FREDFETs
Full device and system-level monitoring
Supports trapezoidal, sinusoidal, or field-oriented control up to 20 kHz PWM
Simple digital interface to the micro-controller (3.3 V and 5 V CMOS-compatible)
Compact footprint surface mount package (InSOP-24C)
- Exposed pads enable heat sinking through PCB

Applications

HV BLDC Motors, fans, pumps
Small and Major Appliances, compressors, blowers

Available tools

Design Examples:

DER-653 - 300 W 3-Phase Inverter Using BridgeSwitch Motor Driver and LinkSwitch-TN2
DER-654 - 300 W 3-Phase Inverter Using BridgeSwitch Motor Driver
DER-749 - 40 W 3-Phase Inverter Using BridgeSwitch Motor Driver and LinkSwitch-TN2
RDR-851 - 50 W 3-Phase Inverter Using BridgeSwitch for Fan Application
RDR-852 - 200 W 3-Phase Inverter Using BridgeSwitch Motor Driver and LinkSwitch-TN2
RDR-853 - 300 W High Thermal Performance 3-Phase Inverter Using BridgeSwitch Motor Driver and LinkSwitch-TN2
DER-870 - 400 W 3-Phase Inverter Using BridgeSwitch Motor Driver and LinkSwitch-TN2
DER-872 - 70 W Single-Phase Inverter Using BridgeSwitch for Fan Application
DER-873 - 30 W Single-Phase Inverter Using BridgeSwitch Motor Driver