DSPIC33FJ32GS406T-50I/PT - 16-bit DSC 50MIPS 32KB | Microchip
MPN: DSPIC33FJ32GS406T-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.85 | $5.85 |
| 10 | $5.35 | $53.50 |
| 100 | $4.8 | $480.00 |
| 500 | $4.35 | $2,175.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33FJ32GS406T-50I/PT Overview
A digital signal controller combines the computational strengths of a microcontroller (MCU) with the math acceleration of a digital signal processor (DSP). Within the power-management hierarchy, DSCs sit at the control core of switch-mode power supplies (SMPS), driving supervisory loops that govern voltage regulators, DC-DC converters, and power factor correction (PFC) stages. The dsPIC33F family is Microchip's 16-bit DSC line, and the GS sub-family (SMPS-focused) adds dedicated high-speed PWM and high-speed analog peripherals targeted at digital power conversion.
Key features of this part include a 16-bit dsPIC33F core executing up to 50 MIPS, 32KB of on-chip FLASH with self-programming capability, a supply range of 3V to 3.6V, industrial temperature operation from -40C to +85C, and the GS-series SMPS peripheral set (high-speed PWM, high-speed ADC, and comparators) that offloads real-time control loops from software. The CMOS process and multiple internal bus architecture support deterministic execution of control algorithms with DSP instructions and barrel shifter acceleration.
Technically, the DSPIC33FJ32GS406 belongs to the GS406 device class within the dsPIC33FJ series. The 'T' suffix denotes tape-and-reel packaging, '-50' the 50 MIPS speed grade, 'I' the industrial temperature range, and '/PT' the 64-pin TQFP (10x10 mm) package. The core runs from an internal PLL off an external crystal, and the DSP engine supports single-cycle MAC operations used in filter and control-loop calculations.
Typical applications include interleaved power factor correction (Microchip's 350W Interleaved PFC reference design targets this family), digital AC-DC and DC-DC power supplies, battery chargers, and uninterruptible power supplies. The integrated high-speed PWM and ADC make it a natural single-chip control solution for these converters.
Design consideration: plan for 0.1uF decoupling at each VDD pin pair and verify the MPLAB X device support pack version matches your compiler release before layout, since pin multiplexing of PWM outputs differs across GS sub-family members.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GS406T-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 DSPIC33FJ32GS406T-50I/PT (same form factor and footprint) — differing in Core, Package, Data Bus Width, Operating Temperature, Product Series.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64GS406T-50I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →DSPIC33FJ32GS406-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GS406T-50I/MR
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33FJ32GS406T-50I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F (16-bit DSC) |
| Program Memory Size | 32KB (32K x 8) FLASH |
| Maximum MIPS | 50 MIPS |
| Supply Voltage Range | 3V to 3.6V |
| Operating Temperature | -40C to +85C (Industrial, I) |
| Package | 64-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Product Series | dsPIC33FJ32GS (SMPS / GS series) |
| Product Type | Digital Signal Controller (DSC) |
| Packaging | Tape & Reel (T suffix) |
| Data Bus Width | 16-bit |
| Technology | CMOS |
| Peripherals | High-Speed PWM, ADC, Comparators (GS series SMPS peripherals) |
| RoHS Status | Compliant |
DSPIC33FJ32GS406T-50I/PT 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ32GS406T-50I/PT (64-tqfp (10x10 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 DSPIC33FJ32GS406T-50I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GS406T-50I/PT is suitable for 6 applications: Interleaved Power Factor Correction (PFC), Digital AC-DC Power Supplies, Battery Chargers, Uninterruptible Power Supplies (UPS), DC-DC Converters and Point-of-Load Regulation, Embedded Control and Development Systems.
Interleaved Power Factor Correction (PFC)
The DSPIC33FJ32GS406T-50I/PT fits interleaved PFC designs because its GS-series high-speed PWM with fine edge resolution and its fast ADC allow each boost phase to be phase-shifted and current-loop controlled with minimal software latency. Microchip publishes an Interleaved PFC reference design on the dsPIC33FJ32GS406 product page that runs from universal AC input and delivers a single high-voltage DC output up to 350W, directly demonstrating this device class. In such a design, the DSC executes average current-mode control on the 50 MIPS core, samples inductor current and bus voltage through the on-chip ADC, and adapts switching phase balance dynamically. The single-chip approach replaces multiple analog controllers, reducing BOM count while allowing firmware-based protection such as bus overvoltage and inrush limiting.
Recommended
Digital AC-DC Power Supplies
For digital AC-DC converters, the DSPIC33FJ32GS406T-50I/PT provides the control core for both PFC and downstream DC-DC stages. The 50 MIPS 16-bit dsPIC33F core with DSP instruction support (single-cycle MAC) executes the voltage and current control loops deterministically, while the GS-series high-speed PWM generates precisely timed gate signals with hardware dead-time insertion. The 3.0V to 3.6V supply range simplifies bias derivation from an auxiliary flyback winding through a small LDO. Firmware-based control enables adaptive burst mode for light-load efficiency, soft-start profiling, and digital protection loops that analog controllers implement with fixed hardware. Because the part is RoHS compliant and industrial temperature rated (-40C to +85C), it suits server and telecom power supplies built to modern environmental requirements.
Recommended
Battery Chargers
The DSPIC33FJ32GS406T-50I/PT is well suited to smart battery charger control because charging profiles (CC, CV, trickle, termination) map naturally onto the DSC's firmware state machines, while the high-speed PWM regulates the switching power stage at the resolutions required for tight current control. The on-chip ADC continuously monitors battery voltage, current, and temperature, and the integrated analog comparators provide fast-cycle hardware protection independent of software, an important safety feature for lithium chemistry. The 32KB FLASH accommodates multi-chemistry charging algorithms plus communication protocol stacks. Its industrial temperature range of -40C to +85C covers garage, industrial, and outdoor charging equipment, and the 64-TQFP 10x10 mm package provides enough general-purpose I/O for keypad, display, and status interfaces in a complete charger product.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS designs, the DSPIC33FJ32GS406T-50I/PT serves as the master control DSC managing the rectifier PFC front end, the battery converter, and the inverter output stage. The GS series high-speed PWM can run multiple converter stages with correct phase relationships, and the fast ADC plus comparators support cycle-by-cycle current limiting during line transients and mode changes. The 50 MIPS core executes the inverter's sinusoidal voltage regulation with DSP-accelerated filter computations, maintaining output THD targets that analog-only designs struggle to achieve across load and temperature. Firmware flexibility also enables battery health diagnostics, event logging, and communication with host systems. The 64-pin TQFP provides the peripheral mix of PWM channels, ADC inputs, and serial interfaces a complete UPS control board typically requires on a single controller.
Recommended
DC-DC Converters and Point-of-Load Regulation
The DSPIC33FJ32GS406T-50I/PT controls digital DC-DC converters where load transients, sequencing, and telemetry matter. Its high-speed PWM supports the switching frequencies used in buck and boost stages, and the on-chip ADC samples output voltage and inductor current fast enough for the inner current loop, while the DSP core closes the outer voltage loop at the 50 MIPS rate. Digital control enables on-the-fly output voltage adjustment, phase shedding for light-load efficiency, and PMBus-style host telemetry from firmware. Compared with fixed analog regulators, one DSC can supervise multiple rails with sequence-dependent startup. The 3.0V to 3.6V operating range matches typical auxiliary bias rails, and the industrial -40C to +85C rating plus RoHS compliance align with telecom and datacenter power board build standards.
Recommended
Embedded Control and Development Systems
Beyond power conversion, the DSPIC33FJ32GS406T-50I/PT serves as a general high-performance 16-bit embedded controller where DSP math is needed: sensor signal processing, motor-adjacent control, and instrumentation. Microchip's product page highlights the Explorer 16/32 Development Board, a low-cost modular platform supporting dsPIC devices through Plug-In Modules (PIMs) with a PICtail Plus daughter-card connector for adding functionality, giving engineers a fast evaluation path for this device. The 32KB FLASH with self-programming supports field firmware updates, and the 64-TQFP exposes ample general-purpose I/O, UART, SPI, and I2C for system integration. Development uses MPLAB X IDE with the XC16 compiler and standard Microchip debug hardware, so teams already using 16-bit PIC/dsPIC tools are productive immediately.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GS406T-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64GS406T-50I/PT | DSPIC33FJ32GS406-50I/PT | DSPIC33FJ32GS406T-50I/MR |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-QFN (MR) - same terminal mapping, different body |
| FLASH Memory | 32KB (32K x 8) | 64KB (2x) | 32KB (same) | 32KB (same) |
| Performance | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS |
| Core | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Packaging | Tape & Reel (T suffix) | Tape & Reel | Tube (40 pcs factory pack) | Tape & Reel |
Key Differentiators
- Memory upgrade path without PCB change (vs DSPIC33FJ64GS406T-50I/PT)
- SMPS-dedicated peripheral set (vs DSPIC33FJ32GP406T-50I/PT)
- Trade-off: package variants are not footprint-identical (vs DSPIC33FJ32GS406T-50I/MR)
Design Notes
Decouple every VDD/VDDCORE pin pair of the DSPIC33FJ32GS406T-50I/PT with 0.1uF ceramic capacitors placed within 2 mm of the pins, plus one bulk 4.7uF-10uF per supply domain. The 64-TQFP (10x10 mm) package places supply pins on multiple sides, so plan a solid 3.3V plane rather than routed traces. Keep the internal core regulator capacitor per the manufacturer datasheet placement guidance - omitting it is a common cause of erratic 50 MIPS operation. Follow Microchip's GS-family layout application guidance for keeping PWM output traces short and away from ADC input routing.
Verify the full part suffix at ordering time: DSPIC33FJ32GS406T-50I/PT (tape-and-reel, 50 MIPS, industrial, 64-TQFP) differs from the tube-packaged DSPIC33FJ32GS406-50I/PT and from the 64-QFN /MR variant, which will not solder onto a TQFP footprint. Also confirm that your MPLAB X device support pack and XC16 compiler versions include the GS406 device, since the GS (SMPS) sub-family has peripheral register sets distinct from the GP/MC sub-families; mismatched support packs generate build errors that look like hardware faults.
When using the GS-series high-speed PWM to drive external gate drivers in power converters, route PWM outputs differentially where practical, keep series gate resistance close to the driver input, and use a low-inductance ground return. Route ADC sense lines (bus voltage, inductor current shunt) away from PWM switching nodes and use RC filtering sized against the ADC sampling rate. The on-chip analog comparators used for cycle-by-cycle protection should reference a clean, dedicated ground so switching noise does not cause false trips at high load.
Estimated: budget the 3.3V rail for core plus I/O current based on the current consumption figures in the manufacturer datasheet for your clock configuration; a 50 MIPS GS-family DSC plus gate driver bias commonly draws tens of milliamps per rail. Derive the 3.0V-3.6V supply from an auxiliary winding through a small LDO, and hold the rail within range during converter startup transients, since out-of-range supply during POR is a frequent brown-out source in digital power designs.
Compliance Information
RoHS compliance noted in distributor datasheet summary (DigChip). REACH, lead-free, halogen-free, and conflict minerals declarations were not present in the provided data and should be requested from Microchip.
