DSPIC33FJ64GS608-50I/PT - 16-bit 50MIPS DSC | Microchip
MPN: DSPIC33FJ64GS608-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.92 | $7.92 |
| 10 | $7.19 | $71.90 |
| 25 | $6.94 | $173.50 |
| 100 | $6.36 | $636.00 |
| 1,000 | $5.38 | $5,380.00 |
DSPIC33FJ64GS608-50I/PT Overview
A digital signal controller is a hybrid semiconductor that merges the control peripherals of a microcontroller with the computational throughput of a digital signal processor. Within the power-management semiconductor hierarchy, the DSC sits above general-purpose MCUs and below dedicated DSPs, making it the preferred controller class for closed-loop digital power conversion where fast, deterministic control loops are required.
Key differentiating features include the high-speed PWM module with special SMPS operating modes, a high-speed 10-bit ADC with multiple sample-and-hold circuits, and on-chip analog comparators - a peripheral set purpose-built for multi-loop digital switch-mode power supplies (SMPS). The device also provides 2 QEI modules, a CAN controller, DAC outputs, and 4 DMA channels for efficient data movement.
Architecturally, the dsPIC33F core executes DSP instructions (MAC, barrel shifter) with dual operands fetched in a single cycle, enabling digital filter algorithms and high-precision control-loop computations at 50 MIPS. Extended-temperature variants such as the /50E grade and industrial (-40C to +85C) /50I grade share the same die and peripheral map.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), and digital lighting or battery-charging power stages.
Design consideration: connect every VDD/VSS pair and pair PGECx/PGEDx consistently for ICSP programming - the device has multiple ICSP pin pairs that must be used as matched pairs.
This page synthesizes distributor pricing, drop-in same-footprint alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-27.
Drop-in alternatives for DSPIC33FJ64GS608-50I/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 DSPIC33FJ64GS608-50I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Packaging, ADC, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GS608-50I/PT
✅ Drop-In✓ In Stock
$5.35 / Unit
View Datasheet →DSPIC33FJ64GS608-50E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GS608-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.15 / Unit
View Datasheet →DSPIC33FJ64GP708A-I/PT
✅ Drop-In✓ In Stock
$4.18 / Unit
View Datasheet →DSPIC33FJ32GP708A-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GS608-50I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Maximum CPU Speed | 50 MIPS |
| Program Memory Size | 64 KB (64K x 8) Flash |
| RAM Size | 9 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, I grade) |
| Package | 80-TQFP (12x12 mm), /PT suffix |
| Mounting Type | Surface Mount |
| PWM Module | High-Speed PWM with SMPS modes |
| ADC | High-speed on-chip ADC |
| Comparators | On-chip analog comparators |
| QEI Modules | 2 |
| CAN | 1 CAN controller |
| DAC | DAC outputs |
| DMA Channels | 4 |
| Feature Set | Boundary scan, barrel shifter |
| Packaging | Tube (Factory Pack Quantity 40) |
| Target Applications | Digital SMPS, AC-DC, DC-DC, PFC, UPS |
DSPIC33FJ64GS608-50I/PT 80-tqfp (12x12 mm), /pt suffix Pin Configuration Guide
Pin configuration for DSPIC33FJ64GS608-50I/PT (80-tqfp (12x12 mm), /pt suffix 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 DSPIC33FJ64GS608-50I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64GS608-50I/PT is suitable for 6 applications: Digital Switch-Mode Power Supplies (SMPS), AC-to-DC Converters, Power Factor Correction (PFC), Uninterruptible Power Supplies (UPS), DC-to-DC Converters, Embedded Control and Communication Nodes.
Digital Switch-Mode Power Supplies (SMPS)
The DSPIC33FJ64GS608-50I/PT is purpose-built for multi-loop digital SMPS control. Its high-speed PWM module provides SMPS-specific operating modes - complementary, push-pull, phase-shifted and multi-phase outputs - with nanosecond-resolution duty-cycle updates that let a 50 MIPS core close voltage- and current-mode loops at switching frequencies well above audible range. The high-speed ADC samples inductor current and output voltage mid-cycle for per-cycle current limiting, while on-chip comparators provide hardware overcurrent trip without CPU intervention. Software libraries and reference designs from Microchip shorten time to a production-quality converter firmware stack.
Recommended
AC-to-DC Converters
In offline AC-to-DC converters, the DSPIC33FJ64GS608-50I/PT handles both the power-stage control loop and housekeeping tasks on one chip. The 50 MIPS dsPIC33F core executes digital compensators (PI/PID and notch filters) cycle-by-cycle, while the high-speed PWM synchronizes rectification switching to the line zero-cross. The fast ADC digitizes bulk-capacitor voltage and input current for feedforward, and the CAN controller enables digital communication with upstream system supervisors. Implementing control in firmware instead of analog error amplifiers allows adaptive inrush management, programmable soft-start, and field-updatable regulation profiles across product variants sharing one PCB.
Recommended
Power Factor Correction (PFC)
Microchip provides an Interleaved Power Factor Correction reference design based on this SMPS DSC family, and the DSPIC33FJ64GS608-50I/PT implements interleaved PFC directly: its multi-output high-speed PWM drives two interleaved boost phases 180 degrees out of phase, reducing input ripple current, while the ADC samples line voltage and phase currents synchronously with PWM for average-current-mode shaping. The on-chip comparators give cycle-by-cycle overcurrent protection, and 4 DMA channels offload ADC result handling so the CPU budget stays available for the PFC compensator and power-metrology code that maintains high power factor at light load.
Recommended
Uninterruptible Power Supplies (UPS)
Online double-conversion UPS architectures need simultaneous inverter, rectifier/charger, and transfer-switch control - exactly the multi-loop workload the DSPIC33FJ64GS608-50I/PT was designed for. The high-speed PWM generates the sinusoidal inverter drive with dead-time control, the high-speed ADC tracks battery voltage/current and inverter output in real time, and comparators provide immediate fault trips for short-circuit conditions. The 64KB Flash stores the full state machine plus communication firmware (CAN or UART) for UPS monitoring. Firmware-defined waveforms also enable selectable output profiles (50/60 Hz, regulated sine) on identical hardware.
Recommended
DC-to-DC Converters
For telecom rectifiers, server VRMs, and industrial bus converters, the DSPIC33FJ64GS608-50I/PT closes fast inner current loops around synchronous buck, boost, or LLC topologies. The high-speed PWM's phase-shift and complementary modes suit LLC and full-bridge stages, with duty resolution fine enough for narrow regulation windows at high switching frequency. Its high-speed ADC with multiple sample-and-hold channels samples input and output simultaneously, and hardware comparators implement overcurrent/overvoltage trips in hardware latency. The 50 MIPS core runs digital compensators and housekeeping (ORing, telemetry via CAN) concurrently within the same control period.
Recommended
Embedded Control and Communication Nodes
Beyond pure power conversion, the DSPIC33FJ64GS608-50I/PT serves as a general 16-bit control and communication node: 2 quadrature encoder interface (QEI) modules decode position feedback from two motors or encoders in hardware, the CAN controller links to industrial networks, DAC outputs provide analog setpoints or telemetry, and 4 DMA channels stream data without CPU overhead. The DSP engine (barrel shifter, single-cycle MAC) accelerates digital filtering in measurement front-ends. With 64KB Flash and 80 TQFP I/O, one part can unify motion feedback, network connectivity, and analog acquisition in industrial subsystems.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64GS608-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GS608-50I/PT | DSPIC33FJ64GS608-50E/PT | DSPIC33FJ64GS608-I/PT | DSPIC33FJ64GP708A-I/PT |
|---|---|---|---|---|---|
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 50 MIPS | 50 MIPS | 50 MIPS | 40 MIPS | 40 MIPS |
| Program Flash | 64 KB | 32 KB | 64 KB | 64 KB | 64 KB |
| SMPS High-Speed PWM | Yes | Yes | Yes | Yes | No (GP peripherals) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | Extended temperature grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Full 64KB Flash at the same cost tier (vs DSPIC33FJ32GS608-50I/PT)
- 50 MIPS core speed (vs DSPIC33FJ64GS608-I/PT)
- SMPS-specialized analog + PWM peripheral set (vs DSPIC33FJ64GP708A-I/PT)
- Industrial temperature rating for standard use (vs DSPIC33FJ64GS608-50E/PT)
Design Notes
Connect every VDD and VSS pin pair on the 80-TQFP; the device will not meet datasheet performance with floating power pins. Decouple each VDD pin with 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus one bulk 4.7-10 uF per power domain. Route the VDD/VSS pairs as short, wide traces to a solid ground plane to support the fast ADC and PWM edge rates.
The device has multiple PGECx/PGEDx ICSP pairs - use any pair, but strictly as a matched pair (ICSPCLK from PGEC2 requires ICSPDAT from PGED2). Mixing pairs from different numbered groups prevents programming. Bring at least one full PGECx/PGEDx pair to a programming header on every production PCB, and keep it free of high-di/dt power-stage routing to avoid debug-session corruption.
Keep the high-speed PWM output traces to the power stage short and, where possible, route them away from the ADC analog input traces to limit coupling from switching edges into sampled channels. Use the hardware comparator trip path (not an interrupt-based software trip) for overcurrent protection so fault latency stays independent of CPU load. Synchronize ADC sampling to the PWM period trigger so samples land away from switching transitions.
The controller operates from 3.0V to 3.6V; power it from a clean 3.3V LDO or filtered rail rather than directly from the converter's own high-noise bias output, or ADC accuracy and PWM jitter will suffer. Estimated: at typical core currents of tens of mA on a 3.3V rail, dissipation is well under 0.2W and no thermal design beyond standard copper pour is needed - verify against the datasheet current tables for your clock configuration.
Compliance Information
RoHS compliance indicated on distributor compliance listings for the /PT TQFP package. REACH and conflict-minerals declarations should be confirmed on the Microchip product page environmental documentation.
