Digitally-enhanced power analogue controllers meet auto load-dump conditions

April 29, 2014 // By Graham Prophet
Microchip has expanded its Digitally Enhanced Power Analogue controller product line with the MCP19114 and MCP19115 devices. The range of intelligent DC/DC power-conversion solutions now includes controllers supporting flyback, boost and SEPIC topologies.

These latest devices introduce a step-up PWM-controller and low-side MOSFET driver architecture, with a mid-voltage LDO and fully-functional microcontroller all integrated into a small, high-density power package. This solution continues to offer the power conversion performance typical of an analogue-based controller, with the flexibility approaching that of a fully-digital power conversion solution. These analogue power-management devices, in combination with the fully-functional microcontroller (MCU), support configurable, high-efficiency power-conversion designs across a broad array of consumer and automotive applications and power conversion topologies.

The MCP19114 and MCP19115 hybrid digital-analogue control solutions offer the speed and responsiveness expected of a high-performance analogue control loop; the flexibility expected of a digital MCU; operate across wide operating voltage ranges; support conventional 5, 12, and 24V rails; and meet automotive load-dump requirements. The MCP19114/19115 analogue-based controllers with digital interface, offer cost-efficient adjustability in a high-performance power conversion solution. These devices support operation up to 42V, and have integrated MOSFET drivers configured for step-up applications. The MCP19114 comes in a 24-lead QFN 4 x 4 mm package and the MCP19115 in a 24-lead QFN 5 x 5 mm package.

Microchip also has the MCP19114 Flyback Standalone Evaluation Board (ADM00578) priced at $49.99. This evaluation board shows a flyback design supporting 0V to 50V output from an 8V to 14V input. Microchip’s full suite of development tools supports the MCP19114 and MCP19115 power controllers, including the MPLAB X Integrated Development Environment (IDE); the PICkit 3 (PG164130) priced at $44.95; PICkit Serial Analyzer (DV164122) priced at $49.99, and the MPLAB XC8 Compiler.