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Power Electronics Europe News
 
Power-driver SiP saves space inindustrial automation

It integrates a 600V/3.5A single-phase MOSFET bridge with gate drivers, bootstrap diodes, protection features, and two comparators. STMicroelectronics supplies the driver in a 15 x 7.0mm outline. The thermally efficient system in package (SiP) occupies 60% less board real-estate than discrete components, claims the company.

 

The single-phase full-bridge module is designed for driving brushed DC motors in applications such as industrial pumps and fans, blowers, domestic appliances, and factory-automation systems. It is particularly targeted at appliances using single-phase brushless motors and is cost-effective and convenient for use in power supply units, says the company.

 

The n-channel MOSFET has on-resistance of 1.38Ω for high efficiency handling medium-power loads. The gate drivers are optimised for reliable switching and low EMI, while the integrated bootstrap diodes enable high-voltage startup with no need for external diodes and passive components to supply the high-side inputs.

 

Two embedded uncommitted comparators allow implementation of peak current control or over-current and over-temperature protection features.

 

The peak-current control used with positioning Hall-effect sensors results in a standalone controller with no need of a dedicated microcontroller to reduce the cost of control electronics. There is also an adjustable dead-time and the option to configure the MOSFETs as a single full bridge or two half bridges.

 

Operating voltage range is from 10 to 20V and inputs are compatible with 3.3 to 15V control signals to interface with Hall sensors, a host microcontroller or DSP.

 

Cross-conduction prevention and under-voltage lockout are also features.

 

The PWD5F60 is in production and available now, packaged as a multi-island VFQFPN device.

 

 



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