Microchip introduces high-voltage analogue buck PWM controller with integrated MOSFET drivers

Together, these two families demonstrate a significant expansion of Microchip’s commitment to enabling higher-voltages and higher efficiencies, as well as the industry trend toward smaller, power-conversion systems.

The MCP19035 is a small, analogue-based PWM controller family with integrated synchronous MOSFET drivers offering outstanding transient performance. The MCP19035 devices operate over a wide 4.5 - 30Vdc range, have a 300 kHz switching-frequency, and offer a factory-adjustable dead-time setting, allowing designers to optimise performance across a wide selection of MOSFET devices. The MCP19035 family, when combined with Microchip’s MCP87xxx MOSFETs, or any low-FOM MOSFET, produces high-efficiency (>96%) DC/DC power-conversion solutions.

The MCP87xxx family of high-speed MOSFETs offers very low FOMs and is packaged in industry-standard 5x6 mm and 3.3x3.3 mm PDFN packages. The MCP87022, MCP87050, and MCP87055 devices offer on-state resistance of 2.2mΩ, 5.0mΩ, and 5.5mΩ, respectively and enable high-efficiency power-conversion designs.

The MCP87xxx MOSFET family also complements Microchip’s existing portfolio of SMPS-focused PIC microcontroller and dsPIC33 “GS” digital signal controllers. Microchip’s MCP14700 synchronous MOSFET driver is ideally suited for driving high-speed, low-FOM MOSFETs. When driven by a microcontroller, the two form a flexible, high-performance power-conversion solution.

The MCP19035 300 kHz Evaluation Board is priced at $45.99, is available now. Complementing the MCP87xxx MOSFET family release is an Excel-based Loss Calculator and user guide, which are also available now.

The MCP19035 and MCP87xxx families are available now for sampling and volume production. The MCP19035 family is offered in a 3x3 mm 10-pin DFN package; whilst the MCP87022 and the MCP87050 are offered in a 5x6 mm 8-pin PDFN packages; and the MCP87055 is available in a 3.3x3.3 mm 8-pin PDFN package.