Power Electronics

Op Amp and MCU Find Home in Half Brick

Microchip Technology has announced that Bel Power has selected its MCP6291 low-power, high-bandwidth op amp and PIC12F675 microcontroller (MCU) for its next-generation power-over-Ethernet (PoE) half-brick dc-dc converter. The op amp is part of the current-sensing circuit in the converter; while the 8-bit PIC MCU provides system monitoring, fault detection and correction, and automated functions.

Bel Power selected Microchip because of its broad product portfolio, excellent development tools and superior technical support. The MCP6291 op amp was chosen for the POE power supply because of its availability in many industry-standard packages, its extended temperature range and Microchip’s short lead time. Meanwhile, the programmability of the Flash PIC12F675 MCU enables Bel Power to modify the system behavior to meet specific customers’ needs.

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