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News

PWM and FOM complementary families support high-efficiency DC/DC power-conversion designs

Microchip Technology : 19 November, 2012  (New Product)
Microchip announces a new family of power-conversion controllers and its first-ever family of power MOSFET devices. This new Pulse Width Modulation (PWM) controller and complementary family of low Figure-of-Merit (FOM) MOSFET products combine to support high-efficiency DC/DC power-conversion designs, covering a broad array of consumer and industrial applications.
PWM and FOM complementary families support high-efficiency DC/DC power-conversion designs

Together, these two families demonstrate a significant expansion of higher voltages and higher efficiencies, as well as reflecting 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 to 30VDC range, have a 300kHz 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.

The MCP87xxx family of high-speed MOSFETs offers very low FOMs and is packaged in industry-standard 5 x 6mm and 3.3 x 3.3mm PDFN packages. The MCP87022, MCP87050, and MCP87055 devices offer on-state resistance of 2.2, 5.0, and 5.5milliohms 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 suited to driving high-speed, low-FOM MOSFETs. When driven by a microcontroller, the two provide flexible, high-performance power-conversion. 

The MCP19035 300kHz Evaluation Board (ADM00434) is priced at $45.99. Complementing the MCP87xxx MOSFET family release is an Excel-based Loss Calculator and user guide.

The MCP19035 and MCP87xxx families are available now for sampling and volume production. The MCP19035 family is offered in a 3 x 3mm 10-pin DFN package, whilst the MCP87022 and the MCP87050 are offered in a 5 x 6mm 8-pin PDFN packages; the MCP87055 is available in a 3.3 x 3.3mm 8-pin PDFN package.

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