DSP (Digital Signal Controllers)
Products (2)
DSPIC33EP32GS202T-I/SS - 70MIPS 16-bit DSC 32KB Flash | Microchip
The Microchip Technology DSPIC33EP32GS202T-I/SS is a 16-bit digital signal controller (DSC) delivering 70 MIPS performance with 32KB (32K x 8) of Flash memory, packaged in a 28-pin SSOP (5.30mm width) surface-mount body and optimized specifically for digital power applications. A digital signal controller combines the computational throughput of a DSP core with the deterministic behavior and peripheral set of a microcontroller. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated power-supply IC: it runs closed-loop control firmware for switch-mode converters while integrating the analog and timing peripherals that dedicated controllers would normally require as external chips. The GS202 variant of the dsPIC33EP family differentiates itself with a dual high-speed 12-bit ADC architecture supporting on-chip analog programmable gain amplifiers (PGA), multiple high-speed analog comparators, and a dedicated high-resolution PWM module designed for switching power stages. These peripherals enable cycle-accurate control of converters switching at hundreds of kilohertz, with the ADC triggered directly from the PWM engine for minimal control-loop latency. The dsPIC33EP core operates from a 3.0V to 3.6V supply and reaches its full 70 MIPS rate from a single-cycle DSP multiply-accumulate engine, hardware division support, and zero-overhead looping, all of which are essential for executing Proportional-Integral-Derivative (PID) and predictive control algorithms inside tight switching periods. Typical applications include AC-DC power factor correction (PFC) stages, DC-DC converters, digital lighting ballasts, battery chargers, and uninterruptible power supplies. Microchip's Interleaved PFC reference design based on this family operates from universal AC input and produces up to 350W of regulated DC output. Designers should budget for the 3.3V-only supply range and reserve the VCAP pin decoupling per datasheet guidance; firmware portability across the dsPIC33EP family allows reuse of control code when moving between package or memory variants. This page synthesizes distributor pricing from 8+ sources, drop-in alternatives within the same 28-SSOP footprint, pinout data, and practical design notes not found in the manufacturer datasheet alone.
DSPIC33EP32GS502T-I/SO - 16-bit 70 MIPS DSC 32KB Flash | Microchip
The Microchip Technology DSPIC33EP32GS502T-I/SO is a 16-bit dsPIC33EP GS-series Digital Signal Controller (DSC) delivering 70 MIPS from 32 KB (32K x 8) of on-chip Flash memory, housed in a 28-pin SOIC surface-mount package. The T suffix denotes tape-and-reel delivery and the I suffix denotes the industrial operating temperature range. A Digital Signal Controller combines the control peripherals of a microcontroller with the multiply-accumulate (MAC) DSP engine of a digital signal processor. In the power-conversion hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP: it runs the closed-loop control algorithms (PFC, LLC, buck, boost) that would otherwise require discrete analog controllers, while retaining flexible GPIO and communication peripherals. The dsPIC33EP GS family is Microchip's SMPS-focused DSC line for digital power applications. Key features include the 70 MIPS 16-bit core with DSP instruction support, high-resolution PWM suitable for switching power supplies, and the GS-family analog block targeted at power conversion. According to Microchip product data, the part is also designated for Functional Safety (FuSa) development support, an important differentiator for industrial and appliance designs requiring documented development flows. Technically, the dsPIC33EP core executes most instructions in a single cycle, with two 40-bit accumulators and hardware division support for control-law computation. The GS (SMPS) variants add high-resolution PWM peripherals and fast analog comparators intended for peak current-mode and voltage-mode digital power topologies, and the family is documented in the dsPIC33EPXXGS50X Family Data Sheet (DS70005127) available from Microchip. Typical applications include interleaved power factor correction (Microchip's 350 W Interleaved PFC reference design targets this device family), digital AC-DC and DC-DC converters, battery chargers, and embedded control in industrial power supplies. When designing with this device, budget Flash carefully at 32 KB and verify that the 28-pin package provides enough PWM and analog channels for the target topology; pin-limited designs may need to move to the 44-pin GS504 variants. Always use Microchip's reference designs as a starting point for digital power layouts. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-25.