The PAC5556 programmable Power Application Controller (PAC) combines a controller, 600V DC-DC converter and gate drivers in a single 52pin 10x10mm QFN package. This has a 150MHz Arm Cortex-M4F digital signal processor with 128kB FLASH and 32kBytes of SRAM alongside a 600V N-channel buck controller and signal conditioning components. This reduces the bill of materials by as much as 35 percent and boosts reliability and energy efficiency in brushless DC (BLDC) motor and permanent synchronous motor (PMSM) control applications.
“In a recent report, IHS Markit concluded there were 89 million smart home appliances shipped globally in 2018, representing about 16 percent of all large white good shipments. In 2019, the global smart appliance market is expected to grow by 74% to 155 million shipments,” said Blake Kozak, principal analyst for Smart Home and Security, IHS Markit.
The integrated programmable power management SiP supplies all necessary voltage rails for the system, including the 12V or 15V gate driver supply for MOSFETs or IGBTs driving the motors. The SiP inlcudes three high-side 600V gate drivers with 250mA/500mA current and three low-side 20V/1A gate drivers. The DC-DC buck converter provides 5V power for other system peripherals.
“We are continually optimizing our product designs to improve performance and increase energy efficiency. The PAC5556 expands our highly-optimized family of PAC devices that can implement BLDC and PMSM programmable motor controllers and drivers in a single, integrated package. This is a game changer for controlling and powering next-generation smart energy AC-powered appliances, devices and equipment,” said Larry Blackledge, general manager, Qorvo Programmable Power Management business unit.
BLDC motors are seeing widespread adoption, thanks to their maintenance-free operation, longer life span, power efficiency and quieter operation. Next-generation systems that are switching from brushed DC motors to BLDCs include smart home appliances, HVAC systems, automobiles, aerospace, defense and medical devices.