DSPIC33FJ64GS606-50I/MR - 16-bit 50MIPS SMPS DSC | Microchip
MPN: DSPIC33FJ64GS606-50I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.2 | $62.00 |
| 100 | $5.65 | $565.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.6 | $4,600.00 |
DSPIC33FJ64GS606-50I/MR Overview
A digital signal controller combines the computational core of a microcontroller with the arithmetic acceleration of a digital signal processor in a single chip. Within the embedded systems hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP, providing deterministic interrupt latency, hardware multiply-accumulate units, and specialized power-conversion peripherals. The dsPIC33FJ family from Microchip targets real-time control, with the GS series specifically architected for digital switch-mode power supplies.
Key differentiating features include a dedicated high-speed SMPS PWM module with complementary outputs and dead-time control, 2 quadrature encoder interfaces (QEI) for motor feedback, an on-chip CAN 2.0B controller for industrial networking, 4 high-speed analog comparators, an on-chip DAC, and a fast 10-bit ADC with multiple sample-and-hold circuits tailored for current sensing in power supplies.
Architecturally, the device uses a modified Harvard 16-bit core with DSP instruction extensions, a barrel shifter, multiple internal bus architecture, 4 DMA channels supporting 7 timers, 2 serial I/O ports, and IEEE 1149.2-compatible JTAG boundary scan for test. In-Circuit Serial Programming (ICSP) and In-Application Programming allow firmware updates without removing the device from the board.
Typical applications include AC-DC and DC-DC digital power supplies, interleaved power factor correction (PFC) converters, solar micro-inverters, battery chargers, and digital lighting ballasts, where the SMPS PWM module provides cycle-by-cycle control and the comparators implement fast overcurrent protection without CPU intervention.
When designing with this device, budget the 3.3V supply and place the exposed pad on a solid ground plane for thermal and EMI performance; also reserve one PGECx/PGEDx pair for ICSP debugging with short traces.
This page synthesizes verified distributor data, drop-in alternatives within the GS family, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ64GS606-50I/MR — 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 DSPIC33FJ64GS606-50I/MR (same form factor and footprint) — differing in Package, RAM, Operating Temperature, Timers, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64GS606-I/MR
✅ Drop-In✓ In Stock
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View Datasheet →DSPIC33FJ32GS606-50I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GS406-E/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.02 / Unit
View Datasheet →DSPIC33FJ64GS406-50I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →DSPIC33FJ64GS606-50E/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GS606-50I/MR Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33F 16-bit DSC |
| Core Size | 16-bit |
| Max MIPS | 50 MIPS |
| Flash Memory | 64KB (64K x 8) |
| RAM | 9KB |
| Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 64-VQFN (9x9 mm) with exposed pad |
| Mounting Type | Surface Mount |
| High-Speed SMPS PWM | Yes (dedicated SMPS PWM module) |
| Analog Comparators | 4 |
| DAC Channels | Yes (on-chip DAC) |
| CAN | CAN 2.0B controller |
| QEI Interfaces | 2 |
| DMA Channels | 4 |
| Timers | 7 |
| Serial I/O Ports | 2 (UART/SPI/I2C capable) |
| JTAG Boundary Scan | IEEE 1149.2 compatible |
| Programming | ICSP and In-Application Programming |
| Packaging | Tube |
| Factory Pack Quantity | 40 |
DSPIC33FJ64GS606-50I/MR 64-vqfn (9x9 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ64GS606-50I/MR (64-vqfn (9x9 mm) with exposed pad 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 DSPIC33FJ64GS606-50I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64GS606-50I/MR is suitable for 6 applications: Digital AC-DC Power Supplies, Interleaved Power Factor Correction (PFC), Solar Micro-Inverters, Battery Chargers and BMS, Industrial Motor Control Drives, Digital Lighting Ballasts and LED Drivers.
Digital AC-DC Power Supplies
The DSPIC33FJ64GS606-50I/MR fits digital AC-DC power supplies because its dedicated SMPS PWM module generates complementary outputs with hardware dead-time control at switching speeds typical of flyback and forward converters, offloading cycle-by-cycle control from the CPU. The 4 on-chip comparators implement fast overcurrent and overvoltage protection without software latency, while the fast ADC with multiple sample-and-holds samples input current and output voltage in the same PWM period. Running at 50 MIPS, the core executes control loops such as voltage-mode or average-current-mode compensation with margin. Microchip's reference designs for this GS family demonstrate complete digital supply implementations.
Recommended
Interleaved Power Factor Correction (PFC)
For interleaved PFC, the DSPIC33FJ64GS606-50I/MR aligns directly with the application Microchip designed the GS family for: the SMPS PWM module produces multiple phase-shifted outputs required to drive two interleaved boost phases, and the high-speed ADC digitizes inductor currents each switching cycle for current-sharing control. Microchip explicitly provides an interleaved PFC reference design built on SMPS dsPIC DSCs of this family. The 4 analog comparators provide hardware cycle-by-cycle overcurrent trips, essential during line transients when software protection is too slow. The 64KB Flash accommodates PFC control plus housekeeping and communication code with headroom.
Recommended
Solar Micro-Inverters
Solar micro-inverters require MPPT (maximum power point tracking), grid-synchronized DC-AC conversion, and safety interlocks - a workload matched to the DSPIC33FJ64GS606-50I/MR. The DSP engine executes MPPT algorithms at 50 MIPS, while the SMPS PWM module drives the power stages with hardware dead-time insertion. The on-chip DAC and comparators create configurable protection thresholds for grid-fault shutdown, and the CAN controller interfaces with system-level monitoring in commercial installations. The industrial -40C to +85C temperature range suits outdoor-mounted electronics, and 64KB Flash retains firmware plus logging for panel diagnostics over the product lifetime.
Recommended
Battery Chargers and BMS
Smart battery chargers benefit from the DSPIC33FJ64GS606-50I/MR's combination of SMPS PWM control, analog comparators for CC/CV transition supervision, and CAN for communication with vehicle or industrial battery-management networks. The fast ADC samples pack voltage and charge current every PWM cycle, enabling accurate constant-current control and temperature-qualified charging profiles computed in firmware. The 2 QEI interfaces additionally support charger systems with motorized positioning or fan control feedback. Industrial temperature rating and 3.3V operation integrate easily into 5V-tolerant-tolerated designs via appropriate level translation on communication pins.
Recommended
Industrial Motor Control Drives
In motor drives, the DSPIC33FJ64GS606-50I/MR provides the 2 quadrature encoder interfaces needed for closed-loop speed/position feedback from two motors or dual sensors on one axis. The SMPS PWM module generates the six or more drive signals for three-phase inverters with dead-time control, and the 4 comparators implement hardware overcurrent protection on phase currents sensed via shunts. At 50 MIPS with DSP multiply-accumulate instructions, field-oriented control (FOC) loops execute deterministically. The CAN 2.0B controller connects the drive to factory automation networks, replacing the need for an external CAN transceiver-adjacent controller chip.
Recommended
Digital Lighting Ballasts and LED Drivers
High-intensity and HID lighting ballasts demand precise resonant-converter control, which the DSPIC33FJ64GS606-50I/MR delivers through its SMPS PWM module's frequency and duty-cycle resolution. The comparators detect lamp fault conditions such as open-circuit or overcurrent instantly in hardware, protecting the power stage before software response. Dimming communication can ride on the CAN controller in commercial installations, or on the serial I/O ports for DALI-style bridges. The -40C to +85C range covers luminaire internal temperatures, and the 9x9 mm VQFN with exposed pad provides the thermal path needed inside sealed lighting enclosures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64GS606-50I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64GS606-I/MR | DSPIC33FJ32GS606-50I/MR | DSPIC33FJ64GS406-E/MR | DSPIC33FJ64GS406-50I/MR |
|---|---|---|---|---|---|
| Package | 64-VQFN (9x9) MR | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64KB | 64KB | 32KB | 64KB | 64KB |
| Operating Temperature | -40C to +85C (I) | -40C to +85C | -40C to +85C | -40C to +125C (E) | -40C to +85C |
| SMPS PWM Module | Yes | Yes | Yes | Yes | Yes |
| Status | Active / In Production | Active | Active | Active | Active |
Key Differentiators
- Dedicated SMPS PWM module purpose-built for digital power (vs DSPIC33FJ64GP206A (general-purpose family))
- Extended temperature option within same footprint (vs DSPIC33FJ64GS606-50E/MR)
- CAN 2.0B integrated for industrial networking (vs DSPIC33FJ64GS406-50I/MR)
Design Notes
The MR package is a 9x9 mm 64-VQFN with an exposed thermal pad. Connect the pad to a solid ground plane using a grid of thermal vias (typically 4x4 to 5x5, 0.3 mm drill) to reduce junction temperature and provide the primary ground return for SMPS PWM switching currents. Place 0.1uF ceramic decoupling capacitors at every VDD/VSS pair within 2 mm of the pins, plus 4.7uF to 10uF bulk capacitance. Keep the analog AVDD filtered with an RC network to preserve ADC accuracy.
Per Microchip datasheet 70000591, PGECx and PGEDx pins are used for In-Circuit Serial Programming (ICSP) and debugging; keep the trace length between the ICSP connector and the ICSP pins as short as possible. Reserve one PGECx/PGEDx pair on a 5-pin header with MCLR, VDD, and GND so production programming does not require removing the board. Also keep SMPS PWM output traces short and route them away from analog sensing lines to prevent capacitive coupling into ADC inputs.
Do not confuse speed grades: the -50I variant runs at 50 MIPS, while the unmarked DSPIC33FJ64GS606-I/MR runs at the base speed grade - substituting the wrong part silently halves control-loop execution time. Confirm Flash headroom before downgrading to the 32KB DSPIC33FJ32GS606. Finally, comparator and DAC references share analog pins with other peripherals; check the datasheet peripheral mux table to avoid pin conflicts when enabling CAN, QEI, and SMPS PWM simultaneously.
Compliance Information
Distributor listings (DigiKey, onlinecomponents.com) show RoHS compliant and lead-free. The device is industrial grade (-40C to +85C), not AEC-Q100 qualified.
