DSPIC33FJ16GS502-I/SO Microchip dsPIC33F 16-Bit Digital Signal Controller 40MIPS 16KB Flash High-Speed PWM ADC SOIC-28

DSPIC33FJ16GS502-I/SO Product Overview

The DSPIC33FJ16GS502-I/SO is a Microchip 16-bit Digital Signal Controller (DSC) in a 28-lead SOIC package, designed for low-voltage (3.3V) digital power, motor control, and embedded applications requiring high-speed analog sampling and fine PWM output. Based on the dsPIC33F core running at 40 MIPS, the DSPIC33FJ16GS502-I/SO integrates 16KB Flash and 2KB SRAM. On-chip peripherals include four independent PWM generators that can produce four complementary PWM pairs, supporting high-resolution duty cycle and real-time updates. The analog front-end of the DSPIC33FJ16GS502-I/SO features a 10-bit high-speed ADC (up to 4 Msps, up to 12 analog input channels) and four high-speed analog comparators, enabling fast cycle-by-cycle current limiting and protection. Communication interfaces include I2C, UART, and SPI. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, in a narrow SOIC-28 package, the DSPIC33FJ16GS502-I/SO is ideal for switching power supplies (SMPS), digital power converters, brushless DC (BLDC) motor drives, and power factor correction (PFC) applications that require compact size and high-speed control loops.

DSPIC33FJ16GS502-I/SO Core Features

Processor Core: The DSPIC33FJ16GS502-I/SO features a 16-bit dsPIC33F core, 40 MIPS, DSP-enhanced instruction set.

Program Memory: The DSPIC33FJ16GS502-I/SO provides 16KB Flash.

Data Memory: The DSPIC33FJ16GS502-I/SO includes 2KB SRAM.

High-Speed PWM: The DSPIC33FJ16GS502-I/SO offers 4 PWM generators, configurable as 4 complementary pairs with high resolution, real-time update, and dead-time insertion.

High-Speed ADC: The DSPIC33FJ16GS502-I/SO integrates a 10-bit SAR ADC, up to 4 Msps, up to 12 analog input channels.

Analog Comparators: The DSPIC33FJ16GS502-I/SO features 4 high-speed comparators, directly linkable to PWM for cycle-by-cycle current limiting.

Communication Interfaces: The DSPIC33FJ16GS502-I/SO supports 1× I2C, 1× UART, 1× SPI.

Signal Processing & Timers: The DSPIC33FJ16GS502-I/SO provides input capture, output compare, multiple 16-bit timers.

System Management: The DSPIC33FJ16GS502-I/SO includes a watchdog timer, BOR/POR, on-chip oscillator.

Power & Package: The DSPIC33FJ16GS502-I/SO operates from 3.0V – 3.6V, in a SOIC-28 package, industrial -40°C to +85°C.

DSPIC33FJ16GS502-I/SO Applications

Digital Power: The DSPIC33FJ16GS502-I/SO is suitable for isolated/non-isolated DC/DC converters, AC-DC adapters, PFC, inverter auxiliary supplies.

Motor Control: The DSPIC33FJ16GS502-I/SO is ideal for small BLDC motor drives, fan/pump control, power tools.

Lighting: The DSPIC33FJ16GS502-I/SO can be used in high-brightness LED drivers, digital dimming supplies.

General High-Speed Control: The DSPIC33FJ16GS502-I/SO excels in real-time closed-loop systems needing fast ADC and fine PWM.

DSPIC33FJ16GS502-I/SO Key Advantages

4 Msps ADC + Analog Comparators: The DSPIC33FJ16GS502-I/SO's 10-bit ADC together with four high-speed comparators enables nanosecond-level fault response and cycle-by-cycle current protection, ideal for high-speed digital power loops.

Flexible 4 Complementary PWM Pairs: The DSPIC33FJ16GS502-I/SO supports independent duty cycle, phase shift, and dead-time to fulfill half-bridge, full-bridge, and active-clamp topologies.

3.3V Low-Voltage Operation: The DSPIC33FJ16GS502-I/SO is level-compatible with mainstream DSPs, MCUs, and digital isolators, simplifying system interconnect.

Compact SOIC-28 Package: The DSPIC33FJ16GS502-I/SO is easy to hand-solder and suitable for automated production, fitting space-constrained power modules and compact motor drives.

40 MIPS DSP Performance: The DSPIC33FJ16GS502-I/SO's single-cycle MAC and DSP instructions efficiently handle digital compensators, filters, and PI/PID control algorithms.

Mature Power-Development Tools: Digital power libraries, compensator design tools, and MPLAB Code Configurator (MCC) accelerate power-supply development with the DSPIC33FJ16GS502-I/SO.

Long-Term Availability: The DSPIC33FJ16GS502-I/SO is a mature dsPIC33F family product with stable long-term supply commitment.

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FAQ

1. What is the DSPIC33FJ16GS502-I/SO?
   The DSPIC33FJ16GS502-I/SO is a Microchip 16-bit Digital Signal Controller (DSC) designed for low-voltage digital power and high-speed motor control.
   • Package: 28-lead SOIC
   • Performance: 40 MIPS
   • Memory: 16KB Flash, 2KB SRAM
   • PWM: 4 complementary PWM pairs
   • ADC: 10-bit, up to 4 Msps, 12 channels
   • Comparators: 4 high-speed analog comparators
   • Communication: I2C, UART, SPI
   • Supply: 3.0V – 3.6V
   • Temperature: Industrial -40°C to +85°C
2. What does the “-I/SO” suffix mean?
   
   • -I: Industrial temperature range (-40°C to +85°C) for the DSPIC33FJ16GS502-I/SO.
   • /SO: 28-lead SOIC narrow-body package.
3. What is the supply voltage? Why use 3.3V?
   
   • The DSPIC33FJ16GS502-I/SO operates from 3.0V to 3.6V, nominal 3.3V.
   • 3.3V operation allows direct connection to most DSPs, MCUs, digital isolators, and CMOS logic without extra level shifters, simplifying power and signal routing for the DSPIC33FJ16GS502-I/SO.
4. What is the ADC speed and resolution?
   
   • The DSPIC33FJ16GS502-I/SO features a 10-bit ADC with a maximum sampling rate of 4 Msps (250 ns per conversion), enabling rapid capture of peak current and transient voltage for high-frequency power loops.
5. What PWM features does it offer? How many complementary outputs?
   
   • The DSPIC33FJ16GS502-I/SO has four independent PWM generators, configurable as four complementary PWM pairs.
   • It supports high-resolution duty cycle, independent phase shifting, dead-time insertion, and real-time updates.
   • Suitable for half-bridge, full-bridge, synchronous rectification, and active-clamp topologies.
6. What applications is it typically used for?
   
   • The DSPIC33FJ16GS502-I/SO is used for digital power: DC/DC converters, AC-DC adapters, power factor correction (PFC).
   • Motor control: Small BLDC drives, fans, pumps, power tools.
   • LED lighting: High-brightness constant-current/constant-voltage drivers.
   • Any real-time closed-loop control requiring fast ADC and fine PWM.
7. What development tools and software are supported?
   
   • The DSPIC33FJ16GS502-I/SO is supported by free MPLAB X IDE and MPLAB XC16 compiler.
   • Hardware debuggers: PICkit, ICD series.
   • Software: MPLAB Code Configurator (MCC), digital power compensator design tools, motor-control libraries for the DSPIC33FJ16GS502-I/SO.
8. How does it differ from the dsPIC33EV series?
   
   • Voltage: The DSPIC33FJ16GS502-I/SO operates at 3.3V; EV series operates at 5V.
   • ADC: The DSPIC33FJ16GS502-I/SO's ADC is faster (4 Msps) but 10-bit; EV series has 12-bit ADC at 1.1 Msps.
   • Integration: The DSPIC33FJ16GS502-I/SO includes more high-speed analog comparators optimized for digital power; EV series focuses on general motor control and CAN communication.
9. What is the SOIC-28 package size?
   Standard 28-lead SOIC narrow-body package, body width approx. 7.5 mm, 1.27 mm pin pitch – suitable for space-constrained designs like the DSPIC33FJ16GS502-I/SO.
10. Is the DSPIC33FJ16GS502 suitable for new designs?
    Yes, the DSPIC33FJ16GS502-I/SO is a mature digital power control DSC with 4 Msps ADC, high-speed comparators, and flexible PWM. It offers a cost-effective solution for 3.3V power conversion and motor control, backed by Microchip's long-term availability commitment.