The integration of an analog-based PWM controller and an 8-bit PIC microcontroller in a single compact package enhances DC-DC conversion by bringing together the speed and efficiency of analog power management with the flexibility and I2C connectivity of digital control.
Microchip’s MCP19114/5 Digital Enhanced Power Analog Controllers can be used in a applications with input voltages ranging from 4.5V to 42 V. These flexible controllers can be configured for many topologies, including flyback, boost, Single-Ended Primary-Inductor Converters (SEPIC) and more.
In addition to the full functionality of the 8-bit PIC microcontroller, the MCP19114/5 devices integrate a step-up PWM-controller, low-side MOSFET drivers and a mid-voltage LDO. This enables them to deliver the speed and responsiveness of a high-performance analog control loop, with the flexibility and configurability of digital power management. In addition to supporting conventional 5V, 12V, and 24V rails, these hybrid analog-based digital controllers also meet load-dump requirements for automotive applications.
Flexibility is achieved through configurable parameters which enable cost efficient optimisation for each application. These include a programmable reference voltage and DAC set-point; as well as power management features such as primary current leading-edge blanking, gate drive dead-time and slope compensation; with fixed-frequency or quasi-resonant operation.