DSPIC33EP64GS502-I/MM Microchip dsPIC33EP 16-Bit Digital Signal Controller 70MIPS 64KB Flash Digital Power PWM QFN-28

DSPIC33EP64GS502-I/MM Product Overview

The DSPIC33EP64GS502-I/MM from Microchip is a high-performance 16-bit Digital Signal Controller (DSC) in a compact 28-lead QFN-S (6mm×6mm) package, purpose-built for high-precision analog sensing, digital power control, and ultra-compact, high-performance power conversion applications. Based on the dsPIC33E core running at 70 MIPS, the DSPIC33EP64GS502-I/MM features 64KB of Flash and 8KB of SRAM, smoothly handling digital power control loops, power factor correction (PFC), and various converter algorithms. A key highlight of the DSPIC33EP64GS502-I/MM is its digital-power-optimized high-speed precision analog peripherals: a 12-bit high-speed ADC (up to 2.0 Msps with up to 8 analog input channels), four analog comparators with programmable references, two 10-bit digital-to-analog converters (DACs), and an advanced high-speed PWM module (up to eight independent outputs configurable as complementary pairs, with high-resolution mode and programmable dead-time). UART, SPI, and I2C interfaces are also provided. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, the QFN-S package features an exposed thermal pad, combining high-density layout with excellent thermal performance—ideal for space-constrained, high-efficiency DC/DC converters, LED drivers, battery chargers, and power conversion systems.

DSPIC33EP64GS502-I/MM Core Features

Processor Core: The DSPIC33EP64GS502-I/MM features a 16-bit dsPIC33E core, 70 MIPS, with DSP-enhanced instruction set (single-cycle MAC)

Program Memory: The DSPIC33EP64GS502-I/MM provides 64KB Flash, In-Circuit Self-Programmable

Data Memory: The DSPIC33EP64GS502-I/MM includes 8KB SRAM, providing ample space for complex digital compensators and real-time data buffering

High-Precision Fast ADC: The DSPIC33EP64GS502-I/MM integrates a 12-bit ADC up to 2.0 Msps with up to 8 analog input channels

Advanced PWM Module: The DSPIC33EP64GS502-I/MM offers up to 8 independent PWM outputs (configurable as complementary pairs) with high-resolution mode, programmable dead-time, and fault protection, perfectly suiting LLC, phase-shifted full-bridge, buck/boost, and other topologies

Integrated Analog Peripherals: The DSPIC33EP64GS502-I/MM contains 4 analog comparators (with programmable references) and 2x 10-bit DACs for fast overcurrent protection and programmable reference setting

Communication Interfaces: The DSPIC33EP64GS502-I/MM supports 1x UART, 1x SPI, 1x I2C

Signal Processing & Timers: The DSPIC33EP64GS502-I/MM includes input capture, output compare/standard PWM, and multiple 16/32-bit timers

Safety & System Management: The DSPIC33EP64GS502-I/MM integrates a hardware CRC engine, watchdog timer, BOR/POR

Power Supply: The DSPIC33EP64GS502-I/MM operates from 3.0V to 3.6V single supply with on-chip voltage regulator

Package: The DSPIC33EP64GS502-I/MM is housed in a QFN-S 28-lead (6mm×6mm) package with exposed thermal pad, industrial temperature range -40°C to +85°C

DSPIC33EP64GS502-I/MM Applications

Digital Power & Converters: The DSPIC33EP64GS502-I/MM is perfectly suited for high-density DC/DC converters, AC/DC adapters, LED drivers, battery chargers

Power Factor Correction (PFC): The DSPIC33EP64GS502-I/MM enables active PFC controllers and motor drive PFC front ends

Power Supplies & Inverters: The DSPIC33EP64GS502-I/MM can be used in micro inverters, solar optimizers, UPS systems

Industrial Power: The DSPIC33EP64GS502-I/MM is ideal for industrial power management modules and servo drive power supplies

Automotive Electronics: The DSPIC33EP64GS502-I/MM supports on-board DC/DC converters and LED drive control

Consumer Electronics: The DSPIC33EP64GS502-I/MM can be deployed in high-end appliance power supplies and power tool chargers

DSPIC33EP64GS502-I/MM Key Advantages

High-Precision 12-bit Fast ADC: The DSPIC33EP64GS502-I/MM’s 2.0 Msps sampling rate combined with 12-bit resolution enables extremely precise capture of switching power supply current and voltage dynamics, easily achieving high-bandwidth digital control loops

Complete Digital Power Analog Front-End: Four comparators (for overcurrent protection or ZVS/ZCS detection) and two DACs (for setting references or slope compensation) on the DSPIC33EP64GS502-I/MM significantly reduce external component count, system cost, and PCB area

Powerful PWM Outputs: The DSPIC33EP64GS502-I/MM delivers up to 8 independent outputs with high-resolution mode and complementary dead-time control, perfectly suiting topologies from simple buck to full-bridge LLC

70 MIPS Efficient DSP Performance: The dsPIC33E core of the DSPIC33EP64GS502-I/MM with single-cycle MAC executes 2p2z compensators, digital filtering, and power control algorithms at high speed, meeting the real-time demands of high-frequency switching supplies

High-Density QFN-S Package: The DSPIC33EP64GS502-I/MM’s 6mm×6mm QFN with an exposed thermal pad combines an extremely small footprint with excellent heat dissipation, ideal for high-density power module designs

Industrial Temperature Range: The DSPIC33EP64GS502-I/MM operates reliably from -40°C to +85°C, ensuring robust performance in harsh environments

Mature Development Toolchain: The DSPIC33EP64GS502-I/MM is fully supported by free MPLAB X IDE and XC16 compiler, digital power reference designs, compensator libraries, and MCC code configurator, dramatically accelerating time-to-market

Long-Term Availability: The DSPIC33EP64GS502-I/MM is a mature dsPIC33EP GS family product purpose-built for digital power, with long lifecycle and stable supply commitment

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FAQ

1. What is the DSPIC33EP64GS502-I/MM?
   The DSPIC33EP64GS502-I/MM is a digital-power-optimized 16-bit Digital Signal Controller (DSC) from Microchip in a 28-lead QFN package, running at 70 MIPS with 64KB Flash, 8KB SRAM, a 12-bit 2.0 Msps ADC, 4 comparators, 2 DACs, and advanced PWM—ideal for high-density power conversion.
2. What does the “-I/MM” suffix mean?
   “-I” indicates the industrial temperature range (-40°C to +85°C), and “/MM” denotes the 28-lead QFN-S package (6mm×6mm) with an exposed thermal pad.
3. How does the DSPIC33EP64GS502-I/MM differ from the DSPIC33EP32GS202?
   The DSPIC33EP64GS502-I/MM increases Flash from 32KB to 64KB, SRAM from 4KB to 8KB, and upgrades the ADC from 10-bit to 12-bit, enabling higher-precision sampling and more complex digital compensation algorithms with greater program storage.
4. Does the DSPIC33EP64GS502-I/MM have CAN or CAN-FD?
   No. The DSPIC33EP64GS502-I/MM is digital-power-specific and does not include a CAN controller. For power designs requiring CAN, consider an external SPI CAN controller or other dsPIC33E variants with integrated CAN.
5. What are the advantages of the 12-bit ADC on the DSPIC33EP64GS502-I/MM over 10-bit?
   The 12-bit ADC on the DSPIC33EP64GS502-I/MM provides 4096 quantization levels, 4× finer than 10-bit, enabling more precise voltage and current measurement—especially valuable for high-accuracy constant-current and constant-voltage digital power control.
6. What are the on-chip comparators and DACs of the DSPIC33EP64GS502-I/MM used for?
   The four high-speed analog comparators of the DSPIC33EP64GS502-I/MM are ideal for cycle-by-cycle overcurrent protection, ZVS/ZCS detection, and PWM fault triggering. The two 10-bit DACs provide programmable reference voltages or slope compensation, greatly reducing external analog components.
7. What development tools are supported for the DSPIC33EP64GS502-I/MM?
   For the DSPIC33EP64GS502-I/MM, Microchip’s free MPLAB X IDE and MPLAB XC16 compiler, along with PICkit or ICD series debuggers, MPLAB Code Configurator (MCC), and digital power reference designs, enable a quick project start.
8. Does the DSPIC33EP64GS502-I/MM have an internal oscillator, or is an external crystal required?
   The DSPIC33EP64GS502-I/MM features an internal high-speed RC oscillator with an on-chip PLL; no external crystal is required. However, for precision switching and timing in digital power, an external crystal is recommended.
9. Are 64KB Flash and 8KB SRAM sufficient for the DSPIC33EP64GS502-I/MM?
   For complex digital power control algorithms (e.g., 2p2z compensators, PFC loops, LLC control) and simple communication stacks, the DSPIC33EP64GS502-I/MM's 64KB Flash and 8KB SRAM provide extremely generous space, ideal for feature-rich high-end power designs.
10. Is the DSPIC33EP64GS502-I/MM suitable for new designs?
    The DSPIC33EP64GS502-I/MM is a mature, reliable digital-power-specific DSC with excellent cost-effectiveness. For new power designs requiring high-precision 12-bit ADC and a compact QFN package, it remains an ideal choice with long-term availability.