DSPIC33FJ16GS504T-I/TL - 16-Bit 40MIPS DSC 16KB Flash | Microchip
MPN: DSPIC33FJ16GS504T-I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.02 | $6.02 |
| 10 | $5.41 | $54.10 |
| 100 | $4.85 | $485.00 |
| 500 | $4.36 | $2,180.00 |
| 1,000 | $3.92 | $3,920.00 |
DSPIC33FJ16GS504T-I/TL Overview
A digital signal controller combines the control peripherals of a microcontroller with the math acceleration of a DSP in a single core. Within the power-management hierarchy, the dsPIC33F GS family sits at the intersection of general-purpose MCUs and dedicated digital power ICs: it is a 16-bit DSC optimized specifically for switch-mode power supply (SMPS) loop control, where fast deterministic interrupt response and high-resolution PWM matter more than raw processing throughput.
Key features include a high-speed PWM module with complementary outputs and dead-time control for half-bridge and full-bridge converters, integrated analog comparators and a high-speed ADC tailored for current-mode and voltage-mode feedback, hardware MAC acceleration for fast PID compensators, zero-overhead looping for control-loop kernels, RTC and timer resources, low-power modes, and a high-speed peripheral interface for digital communication with companion converters.
The architecture pairs the dsPIC33F 16-bit pipelined core with dedicated DSP instructions, enabling single-cycle multiply-accumulate operations that execute control-loop compensation in microseconds. The ADC-PWM synergy allows tightly synchronized current sampling at the midpoint of each PWM cycle, minimizing switching-noise-induced measurement error in peak current-mode control.
Typical applications include AC-DC converters, DC-DC converters (including quarter-brick intermediate bus architectures), Power Factor Correction (PFC) stages, and uninterruptible power supplies (UPS), as well as battery chargers and LED drivers where adaptive digital control outperforms fixed analog compensation.
Design consideration: the 3.0V to 3.6V supply range requires a clean 3.3V rail; place 0.1uF decoupling at every VDD/VSS pair and keep high-current PWM traces away from the analog feedback lines to preserve ADC accuracy.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ16GS504T-I/TL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33FJ16GS504T-I/TL (same form factor and footprint) — differing in Package, RoHS Status, Operating Temperature, ADC, Analog Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16GS504-I/TL
✅ Drop-In✓ In Stock
$3.68 / Unit
View Datasheet →DSPIC33FJ16GS504-E/ML
✅ Drop-In✓ In Stock
$6.21 / Unit
View Datasheet →DSPIC33FJ16GS504T-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GS404T-50I/TL
✅ Drop-In✓ In Stock
$5.05 / Unit
View Datasheet →DSPIC33FJ16GS504T-I/TL Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F (16-bit DSC) |
| Max MIPS / Clock Frequency | 40 MIPS / 40 MHz |
| Program Memory (FLASH) | 16KB (16K x 8) |
| Data RAM | 2 KB |
| Operating Supply Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Package | 44-VTLA (6x6 mm) |
| Mounting Style | SMD/SMT |
| Operating Temperature | -40C to +85C |
| Specialty Peripherals | SMPS: High-Speed PWM, ADC, Comparators |
| DSP Features | Hardware MAC acceleration, barrel shifter, zero-overhead loop |
| Low-Power Modes | Yes |
| Timers / RTC | RTC and timer modules included |
| External Interrupts | 3 |
| Packaging | Tape and Reel (T suffix) |
| RoHS Status | Compliant |
| Application Target | Digital power conversion (SMPS, PFC, AC-DC, DC-DC, UPS) |
DSPIC33FJ16GS504T-I/TL 44-vtla (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ16GS504T-I/TL (44-vtla (6x6 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33FJ16GS504T-I/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ16GS504T-I/TL is suitable for 6 applications: AC-DC Converter Digital Control, DC-DC Converter (Quarter-Brick IBA), Power Factor Correction (PFC), Uninterruptible Power Supply (UPS), Digital Battery Chargers, Digital LED Driver Power Supplies.
AC-DC Converter Digital Control
The DSPIC33FJ16GS504T-I/TL is purpose-built for digitally controlled AC-DC power supplies. Its high-speed PWM module generates complementary outputs with programmable dead-time for half-bridge and full-bridge topologies, while the high-speed ADC samples output voltage and inductor current synchronized to the PWM cycle midpoint, minimizing switching-noise-induced measurement error. Hardware MAC acceleration executes the PID compensator in microseconds at 40 MIPS, achieving loop bandwidths impossible for software-only MCUs. Cycle-by-cycle current limiting via the integrated comparators provides hardware-level fault protection independent of firmware latency. Placed as the main control IC, it replaces analog compensation networks with adaptive digital control that tolerates component variation.
Recommended
DC-DC Converter (Quarter-Brick IBA)
Microchip's own quarter-brick DC-DC reference design for intermediate bus architectures (IBA) uses the dsPIC33FJ16GS504 as the control engine, demonstrating the device's fit for high-density isolated converters. The 40 MIPS core runs multi-loop control (voltage outer loop, current inner loop) with zero-overhead loop instructions keeping the compensator kernel cycle-deterministic. The high-speed PWM's adjustable resolution supports the tight duty-cycle control that fixed-frequency brick converters require, and the fast ADC enables per-cycle current sharing between parallel bricks. The 3.3V supply and 6x6 mm VTLA package keep the controller's board area minimal inside a quarter-brick footprint.
Recommended
Power Factor Correction (PFC)
For boost-PFC front ends, the DSPIC33FJ16GS504T-I/TL provides the two critical loops: an average-current-mode inner loop and a voltage outer loop shaping the input current to follow the rectified line. The high-speed ADC samples input current and bus voltage with PWM synchronization, while hardware MAC acceleration implements the multiplier function of the PFC control law efficiently at 40 MIPS. Integrated comparators support cycle-by-cycle overcurrent protection during line transients, and the RTC and timer resources support line-frequency synchronization and brown-out handling. Digital PFC achieves better light-load efficiency and THD than fixed analog solutions because the compensator gains can adapt to load conditions in firmware.
Recommended
Uninterruptible Power Supply (UPS)
In UPS designs, the DSPIC33FJ16GS504T-I/TL coordinates battery charging, inverter output regulation, and transfer switching. The high-speed PWM drives the inverter bridge with dead-time control; the ADC and comparators monitor output voltage, battery current, and protection thresholds cycle-by-cycle. The 40 MIPS 16-bit core generates a sinusoidal reference using the DSP MAC instructions while simultaneously running multiple regulation loops, and the RTC supports logging and scheduling. Three external interrupt lines respond immediately to AC-line loss detection for fast static-transfer switching. The device's SMPS peripheral integration eliminates external analog control circuitry, reducing BOM count in the compact UPS control board.
Recommended
Digital Battery Chargers
Battery charging profiles (CC-CV, trickle-to-fast transitions, termination detection) benefit from the DSPIC33FJ16GS504T-I/TL's digital control flexibility. The high-speed PWM with programmable dead-time drives a synchronous buck charging stage, while the fast ADC continuously monitors charge current, battery voltage, and temperature inputs. Charge termination and safety limits can be enforced in firmware with the integrated comparators providing a hardware backstop against overcurrent. The 3.0V-3.6V supply, -40C to +85C industrial range, and 6x6 mm footprint suit both consumer and industrial charger designs, and ICSP programming allows charge-profile firmware updates without board changes across battery chemistries.
Recommended
Digital LED Driver Power Supplies
High-current LED drivers need precise, flicker-free current regulation with dimming control - a natural fit for the DSPIC33FJ16GS504T-I/TL. The high-speed PWM performs both the switching-converter regulation and the PWM dimming function with independently configurable resolution, and the ADC samples LED current for closed-loop accuracy over temperature and binning variation. Hardware MAC acceleration implements adaptive compensation as the LED forward voltage drifts, and the comparators protect against short-circuit faults cycle-by-cycle. Digital implementations allow DALI or PWM-dimmable interfaces through the device's communication peripherals, enabling smart lighting products on a single-controller BOM with the 6x6 mm VTLA conserving driver-board area.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16GS504T-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16GS504-I/TL | DSPIC33FJ16GS504-E/ML | DSPIC33FJ16GS404T-50I/TL |
|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-QFN family (ML) - same footprint family | 44-VTLA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS |
| FLASH | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | Extended grade (E suffix) | -40C to +85C |
| Peripheral Set | Full GS504 SMPS set | Full GS504 SMPS set | Full GS504 SMPS set | GS404 reduced peripheral set |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
Key Differentiators
- SMPS-dedicated peripheral integration (vs DSPIC33FJ16GS404T-50I/TL)
- Extended temperature option on same footprint (vs DSPIC33FJ16GS504-E/ML)
- Compact 6x6 mm footprint vs TQFP (vs DSPIC33FJ16GS504T-I/PT)
Design Notes
Provide a solid ground return for the exposed pad of the 44-VTLA (6x6 mm) package; the QFN-style thermal pad doubles as the primary ground connection, so connect it to the ground plane with a via array. Place 0.1uF ceramic decoupling at each VDD/VSS pair within 2 mm of the pins, plus bulk 10uF at the 3.3V rail entry. Keep the analog supply (AVDD) filtered through an RC or ferrite from the digital rail to preserve ADC accuracy in switching power environments.
Route high-current PWM outputs away from ADC analog inputs and comparator sense lines. The GS family's strength - synchronized ADC sampling at the PWM cycle midpoint - only delivers low-noise readings if analog traces do not couple gate-driver switching edges. Use ground guard traces around feedback dividers and sense shunts, and sample current via a dedicated shunt amplifier rather than sharing the power ground return with digital signals.
The device requires a 3.0V-3.6V supply; do not power it from a 5V rail. Configure configuration bits (oscillator, watchdog, brown-out) in firmware project settings before first programming - incorrect oscillator settings are the most common cause of a 'dead' dsPIC33F after programming. Use ICSP (PGD/PGC) with a header on every design, and check the Microchip errata sheet for the GS family before relying on peripheral edge cases in production firmware.
Compliance Information
RoHS compliant per Microchip product data and digchip distributor specification listing. AEC-Q100 qualification not stated in provided data for this part.
