Microchip PIC12HV615T-I/SN: High-Voltage PIC Microcontroller with Integrated MOSFET Driver

In the realm of embedded control, particularly for applications requiring direct interaction with higher power components, designers often face the challenge of bridging the gap between low-voltage logic and high-voltage power circuits. The Microchip PIC12HV615T-I/SN elegantly addresses this challenge by integrating a capable microcontroller with a high-voltage output driver on a single monolithic chip. This integration simplifies designs, reduces component count, and enhances overall system reliability.

This device is built upon the core of Microchip's proven PIC12 architecture. It features a precise 8-bit microcontroller core with a 2MHz internal oscillator, 1.75KB of program memory, and 64 bytes of RAM. This provides sufficient processing power for a wide range of control and monitoring tasks. A key peripheral is its 10-bit Analog-to-Digital Converter (ADC) with up to four channels, enabling the system to read sensor inputs such as voltage or temperature directly.

The standout feature of the PIC12HV615T-I/SN is its integrated MOSFET driver capable of directly driving an N-channel MOSFET. This output can sink up to 50mA, which is sufficient to control small motors, solenoids, or LEDs without the need for an external driver IC. Crucially, the integrated HV output can operate at a voltage (up to 45V) that is completely independent of the microcontroller's core logic supply voltage (VDD), which typically operates at a standard 3.3V or 5V. This allows the MCU to be powered from a low-voltage rail while controlling a load powered by a much higher voltage source, such as a 12V, 24V, or even higher battery pack.

Furthermore, the device includes an on-chip high-voltage shunt regulator. This allows it to be powered directly from the high-voltage rail (up to 45V) through a simple series resistor, eliminating the need for a separate, external voltage regulator. This is a significant advantage for space-constrained and cost-sensitive applications, further contributing to the bill-of-materials (BOM) reduction.

Typical applications that benefit from this unique combination of features include:

Appliance Control: Controlling pumps, fans, and valves in white goods.

Automotive Systems: Driving small motors or LEDs in interior lighting or body electronics.

Industrial Automation: Acting as a smart node for sensor interfacing and actuator control.

Consumer Electronics: Controlling high-voltage LED arrays or simple motorized components.

ICGOODFIND: The PIC12HV615T-I/SN is a highly integrated solution that eliminates the need for external driver components, dramatically simplifying PCB layout and reducing system cost and size. Its ability to be powered directly from a high-voltage rail and control loads at that same voltage makes it an exceptionally efficient choice for a broad spectrum of power control applications.

Keywords:

Integrated MOSFET Driver

High-Voltage Microcontroller

Monolithic Integration

Power Control

Bill-of-Materials Reduction