Smart Functional Improvements Expected for Battery Charging and DC-DC Conversion Applications
MCP19124/5, Featuring Independent Voltage and Current Control Loops with Full Set of Performance Parameters

Microchip Technology (Korea Representative: Han Byung-don) has newly launched a power analog (DEPA) controller with enhanced digital functions. This controller is designed to regulate current and voltage and monitor temperature. The product supports digital functions for battery charging, making it highly suitable for DC-DC conversion in server, consumer appliance, industrial, and automotive applications.

The MCP19124/5 features cell balancing and supercapacitor charging capabilities and supports configurable charging algorithms for all types of chemical batteries. Additionally, unlike other single-chip battery charging solutions, it allows users to set charging profiles as desired for all chemical batteries and voltage or cell configurations.

Users can develop and implement their own unique charging methods. Regardless of the charging conditions such as voltage, current, temperature, or duration, new portions of the charging profile can be modified to fit the requirements. This device is suitable for all DC-DC applications requiring strict voltage or current regulation and supports flyback, boost, SEPIC, and Cuk topologies.

The advantages of the MCP19124/5 are as follows. First, individual voltage and current control loops form a unique combination. Through the current control loop, regulation can be achieved to a specific target current, or the voltage control loop can be used to achieve a target voltage. Each analog control loop has an individual feedback network for independent pole-zero placement and performs zero-crossing detection for quasi-resonant operation.

Second, switching between the two control loops enables dynamic switching from a voltage target to a current target or vice versa. The internal architecture ensures that such transitions remain constant without causing glitches or transient phenomena. This control configuration allows the output voltage to be pre-set even under open or no-load conditions, thereby minimizing transient conditions when load is applied.

Third, it incorporates a full set of configurable and adjustable performance parameters. These parameters are set in the device's internal registers (no external components required) and can be dynamically adjusted during operation.

Finally, a built-in linear regulator, MOSFET driver, 8-bit PIC® microcontroller core, analog-to-digital converter, precision oscillator, and analog control loop are integrated into a single ultra-compact solution.