DSPIC33FJ32GS608T-50I/PT - 16-bit 50MIPS DSC | Microchip
MPN: DSPIC33FJ32GS608T-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.37 | $6.37 |
| 10 | $5.8 | $58.00 |
| 100 | $5.21 | $521.00 |
| 500 | $4.75 | $2,375.00 |
| 1,000 | $4.31 | $4,310.00 |
DSPIC33FJ32GS608T-50I/PT Overview
A digital signal controller combines the computational architecture of a digital signal processor with the peripheral integration and control-oriented instruction set of a microcontroller. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP, providing fast multiply-accumulate operations for control loops while integrating the PWM, ADC, and analog comparators required for switch-mode power conversion. The dsPIC33F family from Microchip is one of the most widely deployed DSC platforms for digital power and motor control.
Key features of this device include a dedicated SMPS PWM module purpose-built for switching power supplies, two quadrature encoder interface (QEI) modules for motor position feedback, an on-chip DAC, and four analog comparators. The 50 MIPS core executes DSP-class instructions, enabling high-bandwidth current-mode and voltage-mode control loops in compact code footprints.
Technically, the DSPIC33FJ32GS608 belongs to the GS series of the dsPIC33F line, which is specifically optimized for digital switch-mode power supplies, power factor correction, and digital lighting. The high-resolution PWM peripheral supports advanced topologies such as half-bridge, full-bridge, and phase-shifted converters, while the analog comparators provide cycle-by-cycle current limiting with minimal CPU intervention.
Typical applications include digital AC-DC and DC-DC power supplies, solar micro-inverters and power factor correction stages, brushless DC and PMSM motor drives using the dual QEI inputs, and high-intensity LED drivers. In each case, the combination of 50 MIPS throughput and dedicated SMPS PWM hardware allows closed-loop bandwidths that discrete MCU implementations cannot easily match.
Design consideration: the /PT TQFP-80 package has fine 0.5 mm pin pitch, so controlled-impedance PCB layout and careful ground return planning under the SMPS PWM pins are recommended; also budget flash capacity carefully, as 32KB is fixed and not expandable in this member of the family.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single citable reference for the DSPIC33FJ32GS608T-50I/PT.
Drop-in alternatives for DSPIC33FJ32GS608T-50I/PT — 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 DSPIC33FJ32GS608T-50I/PT (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Comparators, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GS608-50I/PT
✅ Drop-In✓ In Stock
$5.35 / Unit
View Datasheet →DSPIC33FJ64GS608-50I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.38 / Unit
View Datasheet →DSPIC33FJ128GS608-50I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GS608T-50I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Maximum Processing Speed | 50 MIPS |
| Flash Program Memory | 32 KB (32K x 8) |
| RAM | 4 KB (4K x 8) |
| Package | 80-TQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Specialized Peripherals | SMPS PWM module |
| Quadrature Encoder Interfaces | 2 QEI |
| On-chip DAC | Yes |
| Analog Comparators | 4 |
| Packaging | Tape and Reel (T suffix) |
| Factory Pack Quantity | 40 |
| Product Series | dsPIC33FJ32GS608 (GS series, digital power) |
| RoHS Status | Compliant (RoHS Details per distributor listing) |
DSPIC33FJ32GS608T-50I/PT 80-tqfp (12x12 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ32GS608T-50I/PT (80-tqfp (12x12 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 DSPIC33FJ32GS608T-50I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GS608T-50I/PT is suitable for 6 applications: Digital Switch-Mode Power Supplies (SMPS), Power Factor Correction (PFC) Stages, Brushless DC and PMSM Motor Drives, Solar Micro-Inverters and Renewable Energy Conversion, High-Intensity LED Lighting Drivers, Embedded Control and Industrial Automation Nodes.
Digital Switch-Mode Power Supplies (SMPS)
The DSPIC33FJ32GS608T-50I/PT was designed specifically for digitally controlled AC-DC and DC-DC power supplies. Its dedicated SMPS PWM module generates complementary outputs with programmable dead time, while the 4 on-chip analog comparators provide cycle-by-cycle overcurrent limiting without CPU latency - critical at switching frequencies of 100 kHz and above. The 50 MIPS DSP core executes voltage-mode or current-mode control loops with proportional-integral compensation fast enough for tight transient response. Placed as the primary controller between the feedback divider and the power stage gate drivers, it replaces discrete analog controllers and enables adaptive, firmware-tunable regulation. The 32KB flash accommodates full control firmware plus housekeeping and communication code for typical telecom and server power supplies.
Recommended
Power Factor Correction (PFC) Stages
In boost-type power factor correction, the DSPIC33FJ32GS608T-50I/PT controls the boost switch using its SMPS PWM outputs while the 4 analog comparators implement fast peak-current protection. The 50 MIPS core runs the average-current-mode PFC loop and the input-voltage feedforward calculations required to achieve power factor above 0.99 in front ends for server and industrial power supplies. The on-chip DAC provides programmable reference thresholds for the comparators, allowing firmware-controlled current limits. Unlike analog PFC controllers, this DSC adapts its compensation dynamically and supports digital communication (I2C/PMBus-style) for system telemetry. Designers should reserve sufficient headroom on the 32KB flash for both the control loop and any housekeeping communication stack.
Recommended
Brushless DC and PMSM Motor Drives
For sensorless or encoder-based motor control, the DSPIC33FJ32GS608T-50I/PT combines its 50 MIPS DSP core with two quadrature encoder interface modules, enabling closed-loop position and speed feedback from two motors or dual feedback on one motor. The SMPS PWM module produces the six-channel three-phase drive signals with hardware dead-time insertion, and the 4 analog comparators provide overcurrent trip protection at the PWM level. Field-oriented control (FOC) algorithms execute efficiently thanks to the DSP multiply-accumulate instructions in the dsPIC33F core. Typical targets include industrial fans, pumps, compressors, and servo drives. The on-chip DAC and comparators also support hardware-based current sensing thresholds, offloading safety functions from firmware for deterministic fault response.
Recommended
Solar Micro-Inverters and Renewable Energy Conversion
Micro-inverters and DC-optimizers require simultaneous MPPT (maximum power point tracking), grid-synchronized inversion, and protective shutdown - all tasks the DSPIC33FJ32GS608T-50I/PT handles with its SMPS PWM, high-speed comparators, and 50 MIPS core. The DSP core executes MPPT search algorithms while the hardware PWM generates the high-frequency conversion stages with dead-time control. The 4 comparators permit independent hardware current limiting on multiple conversion stages, and the DAC sets firmware-adjustable thresholds for grid-fault detection. The industrial -40C to +85C operating range matches outdoor enclosure environments. With 32KB flash, the full MPPT, inverter control, and grid-compliance firmware for a single-module micro-inverter fits comfortably, though check code size margins early in development.
Recommended
High-Intensity LED Lighting Drivers
Digital LED drivers benefit from the DSPIC33FJ32GS608T-50I/PT's SMPS PWM module for constant-current buck or boost conversion at switching frequencies up to several hundred kHz, with dimming accomplished through firmware-controlled PWM resolution. The 4 analog comparators implement cycle-by-cycle current protection essential for LED string reliability, and the DAC allows the current setpoint to be trimmed in firmware for color/temperature calibration. The 50 MIPS core adds digital headroom for DALI or DMX-style lighting protocols alongside the power conversion loop. Industrial temperature rating (-40C to +85C) suits streetlight and horticultural lighting enclosures. The 80-pin TQFP provides enough I/O for multi-string drivers, thermal sensors, and user interfaces on a single controller.
Recommended
Embedded Control and Industrial Automation Nodes
Beyond power conversion, the DSPIC33FJ32GS608T-50I/PT serves as a general 16-bit embedded controller in industrial automation, using its 50 MIPS throughput for fast polling loops, its 2 QEI modules for encoder-based positioning, and its analog comparators and DAC for local monitoring and thresholds. The 80-pin TQFP offers abundant I/O for relays, sensors, and communication peripherals across the dsPIC33F serial portfolio (UART, SPI, I2C). Development is streamlined by Microchip's Explorer 16/32 Development Board with dsPIC PIM support, MPLAB X IDE, and the XC16 compiler. The 32KB flash and 4KB RAM suit deterministic real-time tasks such as sequence control, instrumentation front ends, and factory-floor sensor aggregation where DSP-class math is occasionally needed.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GS608T-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GS608-50I/PT | DSPIC33FJ64GS608-50I/PT | DSPIC33FJ128GS608-50I/PT |
|---|---|---|---|---|
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | dsPIC33F 16-bit, 50 MIPS | dsPIC33F 16-bit, 50 MIPS | dsPIC33F 16-bit, 50 MIPS | dsPIC33F 16-bit, 50 MIPS |
| Flash Program Memory | 32 KB | 32 KB | 64 KB | 128 KB |
| SMPS PWM / QEI / DAC / Comparators | SMPS PWM, 2 QEI, DAC, 4 comparators | SMPS PWM, 2 QEI, DAC, 4 comparators | SMPS PWM, 2 QEI, DAC, 4 comparators (same family) | SMPS PWM, 2 QEI, DAC, 4 comparators (same family) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial, I suffix) | -40C to +85C (Industrial, I suffix) |
| Packaging Format | Tape & Reel (T suffix) | Tube / Tray (non-T) | Tape & Reel | Tape & Reel |
Key Differentiators
- Optimized for digital power: dedicated SMPS PWM module (vs DSPIC33FJ32GP304-I/ML)
- Dual quadrature encoder interfaces for dual-motor feedback (vs DSPIC33FJ16GS504-50I/PT)
- Lowest-cost entry to the 80-pin GS608 family (vs DSPIC33FJ64GS608-50I/PT)
Design Notes
The /PT package is an 80-pin TQFP with a 0.5 mm pin pitch. For reliable assembly, use solder-mask-defined pads with via-stitched ground plane and keep the SMPS PWM output traces short and symmetric to their gate drivers to minimize ringing. Decouple every VDD/VDDCORE pin pair per the Microchip datasheet recommendation (typically 0.1 uF ceramic per pin plus bulk capacitance), placing capacitors within 2 mm of the pins. The exposed geometry of the 12x12 mm body also benefits from a solid ground pour on the layer directly beneath to reduce EMI from the fast PWM edges.
Verify the core supply sequencing and decoupling requirements in the official dsPIC33FJ32GS608 datasheet before layout freeze; the dsPIC33F family requires a stable core voltage derived on-chip with an external capacitor, and incorrect decoupling is a leading cause of erratic reset behavior. Estimate the total power budget including the 50 MIPS core, ADC operation, and I/O loads rather than relying on idle current figures. Keep analog comparator and DAC reference routing away from the PWM switching nodes to preserve cycle-by-cycle protection accuracy.
Flash capacity is fixed at 32KB on this device - it cannot be upgraded in-circuit, so perform a code-size review before committing to the 32KB member. If control firmware, communication stacks, or bootloader requirements grow, the pin-compatible DSPIC33FJ64GS608 in the same 80-TQFP footprint provides 64KB with minimal redesign. Also note the 'T' suffix means tape-and-reel: the non-T DSPIC33FJ32GS608-50I/PT in tube form is the identical device, so a BOM lock on the T suffix alone can create unnecessary procurement constraints during shortages.
Route the quadrature encoder inputs (2 QEI channels) as differential or shielded pairs when the encoders are more than a few centimeters from the DSC, and add series termination near the source for long lines. Keep the four analog comparator inputs on a quiet analog island separated from PWM switching currents by a moat or careful return-path planning; comparator false trips caused by PWM ground bounce are a well-known failure mode in digital power boards built on this family.
Compliance Information
Distributor listings (digchip, Mouser) indicate RoHS compliance for this part. REACH, halogen-free, and conflict-minerals declarations were not found in the provided data and should be requested from Microchip.