Microchip recently expanded its dsPIC33A digital signal controller lineup with the dsPIC33AK256MPS306 family of digital signal controllers (DSCs), which target applications that require fast, deterministic control alongside integrated analog and security capabilities.
Microchip’s dsPIC33AK256MPS306 DSC combines real-time control, high-speed analog, and integrated security for a variety of industrial applications.
The new devices combine a 200-MHz, 32-bit core, high-resolution PWM, fast ADCs, and built-in security features, including support for post-quantum cryptography. By integrating these functions into a single device, the family is designed to reduce component count, simplify board design, and support high-performance applications in power conversion, motor control, and intelligent sensing.
High-Resolution Control and Processing Performance
With its 200-MHz, 32-bit core and a double-precision floating-point unit, the dsPIC33AK256MPS306 series (datasheet linked) can handle complex control algorithms without relying on external processors. High-resolution PWM outputs with 78-ps granularity enable precise switching control, especially in high-frequency power-conversion systems using SiC and GaN devices.
Fast trigonometric execution, with sine and cosine calculations completed in around 20 ns, supports responsive field-oriented control (FOC) for motors. Combined with dedicated interfaces for encoders and resolvers, the devices are positioned to handle real-time motor feedback and control loop closure with minimal latency.
High-Speed Analog Integration and Sensing
The new family of digital signal controllers integrates multiple 12-bit ADCs capable of up to 40 MSPS, along with high-speed comparators and DACs, enabling the device to handle sensing and control directly without external analog front-end components. Oversampling supports up to 16-bit effective resolution, which is useful for applications that require more precise measurements.
The dsPIC33AK256MPS306 family block diagram. (Go to page 27 of the datasheet for an enlarged image.)
These controllers will now include additional analog features, including integrated operational amplifiers and touch control capabilities, allowing the same device to support both control and human-machine interface functions. This level of integration is particularly useful in intelligent sensing applications, where reducing external components can simplify layout and improve system reliability.
Security and Connectivity for Modern Systems
Security is a key addition in this generation, with hardware support for secure boot, secure firmware updates, and secure debug. These new DSCs will also support post-quantum cryptography through CNSA Suite 2.0-aligned algorithms and hardware-accelerated cryptographic functions. This is increasingly relevant in connected systems where long product lifetimes require protection against future cryptographic threats.
Example application circuit.
On the connectivity side, the inclusion of I3C supports low-latency communication in sensor and telemetry networks, particularly in data center and server environments. Additional interfaces such as CAN FD, SPI, I2C, LIN, and SENT provide flexibility for integration into automotive and industrial systems.
Why This Matters for Next-Generation Systems
Applications such as AI data centers, automotive systems, and industrial automation are moving toward greater efficiency, tighter control, and more system-level integration. Power stages often switch faster, placing greater demands on the control loop's speed and timing accuracy. At the same time, increased connectivity is driving the need for built-in security. Bringing control, analog, and security functions into a single device helps reduce latency between functions, reduce the number of external components, and simplify overall system design while still meeting performance and reliability requirements.
Microchip’s dsPIC33AK256MPS306 series will bring together high-resolution control, high-speed analog, and integrated security in a single DSC platform. With a 200-MHz core, fast ADCs, precise PWM control, and support for post-quantum cryptography. The dsPIC33AK256MPS306 family of devices was designed to handle power conversion, motor control, and intelligent sensing in increasingly demanding applications.
All images used courtesy of Microchip.
