STMicroelectronics PWD5F60 high-density power driver

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STMicroelectronics’ PWD5F60 high-density power driver is a power-driver system in package (SiP) addressing high-voltage brushed DC and single-phase brushless motor applications. It integrates a 600 V/3.5 A single-phase MOSFET bridge with gate drivers, bootstrap diodes, protection features and two comparators in a 15 x 7 mm outline. The thermally efficient SiP is said to occupy 60% less board real estate than discrete components, while simplifying design and assembly.

As a single-phase full-bridge module, the product is tailored 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 for durability and efficiency, and convenient for use in power supply units.

With on-resistance of 1.38Ω, the device’s integrated N-channel MOSFETs ensure high efficiency for handling medium-power loads. The gate drivers are optimised for switching and low EMI (electromagnetic interference), while the integrated bootstrap diodes enable high-voltage start-up with no need for external diodes and passive components to supply the high-side inputs.

Flexibility is assured by two embedded uncommitted comparators that allow easy implementation of peak current control or overcurrent and overtemperature protection features. The peak-current control, used in conjunction with positioning Hall effect sensors, enables a standalone controller with no need of a dedicated MCU.

Further flexible features include adjustable dead time and the option to configure the MOSFETs as a single full bridge or two half bridges. The operating voltage range extends from 10–20 V and inputs are compatible with 3.3–15 V control signals to ease interfacing with Hall sensors or a host microcontroller or DSP.

Cross-conduction prevention and undervoltage lockout are built in to protect the device by preventing operation in low-efficiency or dangerous conditions.

For more information: www.st.com/pwd.