DSPIC33FJ16GS502-E/MM Microchip dsPIC33FJ 16-Bit Digital Signal Controller 40MIPS 16KB Flash Digital Power PWM QFN-28

DSPIC33FJ16GS502-E/MM Product Overview

The DSPIC33FJ16GS502-E/MM from Microchip is a high-performance 16-bit Digital Signal Controller (DSC) in a compact 28-lead QFN-S package, engineered for high-end power conversion applications requiring high-speed analog sensing, digital power control, and an extended operating temperature range. Based on the dsPIC33FJ core running at 40 MIPS, the DSPIC33FJ16GS502-E/MM features 16KB of Flash and 2KB of SRAM, smoothly handling digital power control loops, power factor correction (PFC), and various converter algorithms. A key highlight of the DSPIC33FJ16GS502-E/MM is its digital-power-optimized high-speed analog peripherals: a 10-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 four independent outputs configurable as complementary pairs, with high-resolution mode and programmable dead-time). UART, SPI, and I2C interfaces are also provided on the DSPIC33FJ16GS502-E/MM. Operating from 3.0V to 3.6V with an extended temperature range of -40°C to +125°C, the DSPIC33FJ16GS502-E/MM is ideal for harsh environments such as engine compartments and high-temperature industrial equipment, enabling compact digital power supplies, LED drivers, battery chargers, and high-efficiency power conversion systems.

DSPIC33FJ16GS502-E/MM Core Features

Processor Core: The DSPIC33FJ16GS502-E/MM features a 16-bit dsPIC33FJ core running at 40 MIPS, with a DSP-enhanced instruction set (single-cycle MAC)

Program Memory: The DSPIC33FJ16GS502-E/MM provides 16KB Flash, In-Circuit Self-Programmable

Data Memory: The DSPIC33FJ16GS502-E/MM includes 2KB SRAM, providing ample space for real-time control algorithms and data buffering

High-Speed ADC: The DSPIC33FJ16GS502-E/MM integrates a 10-bit ADC up to 2.0 Msps with up to 8 analog input channels

Advanced PWM Module: The DSPIC33FJ16GS502-E/MM offers up to 4 independent PWM outputs (configurable as complementary pairs) with high-resolution mode, programmable dead-time, and fault protection

Integrated Analog Peripherals: The DSPIC33FJ16GS502-E/MM includes 4 analog comparators (with programmable references) and 2x 10-bit DACs

Communication Interfaces: The DSPIC33FJ16GS502-E/MM supports 1x UART, 1x SPI, and 1x I2C

Signal Processing & Timers: The DSPIC33FJ16GS502-E/MM features input capture, output compare/standard PWM, and multiple 16/32-bit timers

Safety & System Management: The DSPIC33FJ16GS502-E/MM includes a watchdog timer and BOR/POR

Power Supply: The DSPIC33FJ16GS502-E/MM operates from a 3.0V to 3.6V single supply with an on-chip voltage regulator

Package: The DSPIC33FJ16GS502-E/MM comes in a QFN-S 28-lead (6mm×6mm) with exposed thermal pad, extended temperature range -40°C to +125°C

DSPIC33FJ16GS502-E/MM Applications

High-Temperature Digital Power: The DSPIC33FJ16GS502-E/MM excels in engine-bay DC/DC converters, AC/DC adapters, LED drivers, and battery chargers (up to 125°C)

Power Factor Correction (PFC): The DSPIC33FJ16GS502-E/MM is ideal for active PFC controllers and motor drive PFC front ends

Power Supplies & Inverters: The DSPIC33FJ16GS502-E/MM is used in micro inverters, solar optimizers, and UPS systems

Industrial Power: The DSPIC33FJ16GS502-E/MM suits high-temperature industrial power management modules and servo drive power supplies

Automotive Electronics: The DSPIC33FJ16GS502-E/MM supports on-board DC/DC converters and LED drive control

Consumer Electronics: The DSPIC33FJ16GS502-E/MM is applied in high-end appliance power supplies and power tool chargers

DSPIC33FJ16GS502-E/MM Key Advantages

Extended High-Temperature Range: The DSPIC33FJ16GS502-E/MM operates from -40°C to +125°C, enabling confident deployment in engine compartments and hot industrial equipment, ensuring long-term stability under extreme thermal conditions

Ultra-Fast 10-bit ADC: The DSPIC33FJ16GS502-E/MM's 2.0 Msps sampling rate precisely captures rapid current and voltage dynamics, easily enabling peak current mode and digital control loops

Complete Digital Power Analog Front-End: The DSPIC33FJ16GS502-E/MM's four comparators (for overcurrent protection or ZVS/ZCS detection) and two DACs (for setting references or slope compensation) significantly reduce external component count, system cost, and PCB area

Flexible Advanced PWM: The DSPIC33FJ16GS502-E/MM offers up to 4 independent outputs with high-resolution mode and complementary dead-time control, perfectly suited for LLC, phase-shifted full-bridge, buck/boost, and other topologies

40 MIPS Efficient DSP Performance: The DSPIC33FJ16GS502-E/MM's dsPIC33FJ core 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 DSPIC33FJ16GS502-E/MM's 6mm×6mm QFN with exposed thermal pad combines an extremely small footprint with excellent heat dissipation, ideal for high-density high-temperature power module designs

Mature Development Toolchain: The DSPIC33FJ16GS502-E/MM is 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 DSPIC33FJ16GS502-E/MM is a mature dsPIC33FJ GS family product purpose-built for digital power, with long lifecycle and stable supply commitment

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FAQ

1. What is the DSPIC33FJ16GS502-E/MM?
   The DSPIC33FJ16GS502-E/MM is a digital-power-optimized 16-bit Digital Signal Controller (DSC) from Microchip in a 28-lead QFN package, running at 40 MIPS with 16KB Flash, 2KB SRAM, a 2.0 Msps high-speed ADC, 4 comparators, 2 DACs, and advanced PWM, extended temperature -40°C to +125°C—designed for high-temperature high-efficiency power conversion.
2. What does the “-E/MM” suffix mean on the DSPIC33FJ16GS502-E/MM?
   “-E” indicates the extended temperature range (-40°C to +125°C), far surpassing the standard 85°C industrial range, suitable for automotive engine compartments and other high-temperature environments; “/MM” denotes the 28-lead QFN-S package (6mm×6mm) with an exposed thermal pad of the DSPIC33FJ16GS502-E/MM.
3. How does the GS series differ from the GP series in the context of the DSPIC33FJ16GS502-E/MM?
   The GS series, including the DSPIC33FJ16GS502-E/MM, is optimized for digital power, offering a faster ADC (2.0 Msps), more analog comparators (4 vs 2), and on-chip DACs, making the DSPIC33FJ16GS502-E/MM particularly suited for fast protection, peak current control, and digital compensation loops in power conversion. The GP series is more general-purpose.
4. Does the DSPIC33FJ16GS502-E/MM have CAN or CAN-FD?
   No. The DSPIC33FJ16GS502-E/MM focuses on digital power control and does not include a CAN controller. For CAN connectivity, consider dsPIC33FJ models with integrated CAN, or add an external SPI CAN controller.
5. What can the 2.0 Msps ADC of the DSPIC33FJ16GS502-E/MM do?
   The 2.0 Msps sampling rate of the DSPIC33FJ16GS502-E/MM allows very precise capture of transient and steady-state current and voltage dynamics in switching power supplies, making it excellent for peak current mode control, valley detection, and high-bandwidth digital control loops.
6. What are the on-chip comparators and DACs used for on the DSPIC33FJ16GS502-E/MM?
   The four high-speed analog comparators on the DSPIC33FJ16GS502-E/MM are ideal for cycle-by-cycle overcurrent protection, ZVS/ZCS detection, and PWM fault triggering. The two 10-bit DACs of the DSPIC33FJ16GS502-E/MM provide programmable reference voltages or slope compensation, greatly reducing external analog components.
7. What is the practical benefit of the 125°C extended temperature of the DSPIC33FJ16GS502-E/MM?
   This rating allows the DSPIC33FJ16GS502-E/MM to operate reliably in extreme heat such as automotive engine compartments, near industrial furnaces, or sun-exposed outdoor equipment—far above the 85°C limit of typical industrial chips, ensuring exceptional reliability in harsh thermal environments.
8. What development tools are supported for the DSPIC33FJ16GS502-E/MM?
   The DSPIC33FJ16GS502-E/MM is supported by Microchip’s free MPLAB X IDE and MPLAB XC16 compiler, along with PICkit or ICD series debuggers, MPLAB Code Configurator (MCC), and Microchip’s digital power reference designs, enabling a quick project start.
9. Are 16KB Flash and 2KB SRAM sufficient for the DSPIC33FJ16GS502-E/MM?
   For most digital power control algorithms (e.g., 2p2z compensators, PFC loops, LLC control) and simple communication stacks, the DSPIC33FJ16GS502-E/MM's 16KB Flash and 2KB SRAM provide generous space. Higher-memory variants are available in the same family if needed.
10. Is the DSPIC33FJ16GS502-E/MM suitable for new designs?
    The DSPIC33FJ16GS502-E/MM is a mature, reliable digital-power-specific DSC combining high-temperature endurance and a highly integrated analog front-end at excellent cost-effectiveness. For new power conversion designs requiring high-temperature operation and a compact package, the DSPIC33FJ16GS502-E/MM remains an ideal choice with long-term availability.