DSPIC33FJ64GS606-I/PT - 16-bit DSC, 40 MIPS, 64KB | Microchip
MPN: DSPIC33FJ64GS606-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.94 | $6.94 |
| 10 | $6.31 | $63.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.96 | $2,480.00 |
| 1,000 | $4.41 | $4,410.00 |
DSPIC33FJ64GS606-I/PT Overview
A digital signal controller combines the compute throughput of a DSP core with the peripheral set and deterministic behavior of a microcontroller. Within the power-management hierarchy, the DSC sits above a plain MCU for control-loop tasks: it executes Proportional-Integral-Derivative (PID) and predictive control loops for switch-mode power supplies (SMPS) at switching frequencies of hundreds of kilohertz, where a general-purpose MCU would struggle to close the loop within one PWM period.
Key features include a modified Harvard 16-bit DSP engine with single-cycle MAC and dual operand fetch, dedicated high-speed PWM peripherals with complementary outputs and dead-time control, high-speed analog-to-digital converters tightly coupled to the PWM for minimum loop latency, 4 DMA channels, and multiple timers. The GS family is explicitly designed by Microchip for multi-loop digital power supplies.
The architecture concurrently fetches two data operands from memory while multiplying two W registers and accumulating the result in a single cycle, per the Microchip datasheet. Analog comparators integrated on-chip support cycle-by-cycle current limiting without external circuitry, essential for peak-current-mode converters.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), and solar inverters. Microchip's Interleaved PFC reference design, producing up to 350W from universal AC input, is based on this family.
Design consideration: the -I suffix denotes the industrial temperature grade (-40C to +85C); verify 3.3V rail sequencing and ICSP (PGECx/PGEDx) trace length per the datasheet layout guidance.
This page synthesizes verified distributor pricing, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ64GS606-I/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 DSPIC33FJ64GS606-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, Programming Interface, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64GS606-50I/PT
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →DSPIC33FJ32GS606-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GS608-50I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.35 / Unit
View Datasheet →DSPIC33FJ64GS606-50E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GS606-I/PTVAO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GS606-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Maximum MIPS | 40 MIPS |
| Program Memory (Flash) | 64 KB |
| RAM | 9216 words |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | TQFP-64 (10x10 mm), S-PQFP-G64 |
| Mounting Type | Surface Mount |
| DMA Channels | 4 |
| Timers | 7 |
| High-Speed PWM | Dedicated SMPS PWM module with dead-time control |
| ADC | High-speed on-chip ADC for digital power loops |
| Comparators | On-chip high-speed analog comparators |
| Debug/Programming | ICSP via PGECx/PGEDx pairs (PICkit 3, ICD 4, MPLAB SNAP) |
| DSP Features | Single-cycle MAC, barrel shifter, dual operand fetch |
| Pin Count | 64 |
DSPIC33FJ64GS606-I/PT tqfp-64 (10x10 mm), s-pqfp-g64 Pin Configuration Guide
Pin configuration for DSPIC33FJ64GS606-I/PT (tqfp-64 (10x10 mm), s-pqfp-g64 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-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64GS606-I/PT is suitable for 6 applications: AC-DC Converter Control, DC-DC Converter (Digital Point-of-Load), Power Factor Correction (PFC), Uninterruptible Power Supplies (UPS), Solar Inverters and Renewable Energy Conversion, Industrial Motor Control and Automation.
AC-DC Converter Control
The DSPIC33FJ64GS606-I/PT is well suited to AC-DC converter control because its dedicated high-speed PWM module supports complementary outputs, programmable dead time, and phase shifting required by LLC and flyback topologies, while the on-chip high-speed ADC samples input and output conditions with minimal latency relative to the PWM period. At 40 MIPS, a full voltage-mode or current-mode control loop executes comfortably within switching periods of 100 kHz and above. The on-chip comparators provide hardware-based cycle-by-cycle current limiting that operates even if firmware stalls, meeting practical safety expectations for offline power supplies. Firmware-controlled burst mode and green-mode features can be layered on top for light-load efficiency targets.
Recommended
DC-DC Converter (Digital Point-of-Load)
For digitally controlled DC-DC converters such as synchronous buck and boost stages, the DSPIC33FJ64GS606-I/PT combines a 40 MIPS 16-bit DSP core with a high-speed PWM whose resolution supports sub-nanosecond effective duty-cycle adjustment, enabling tight output regulation at high switching frequencies. The tightly coupled ADC can trigger from the PWM time base, guaranteeing that current and voltage samples land at the correct point within each switching cycle - critical for average-current-mode control. The single-cycle MAC accelerates PID and 2P2Z (two-pole two-zero) compensator calculations, which are the standard compensators in digital power firmware. Its 9216 words of RAM hold state for multiple simultaneous control loops in multi-rail designs.
Recommended
Power Factor Correction (PFC)
Power factor correction is a flagship application for this family: Microchip states the dsPIC33FJ64GS606 supports PFC, and the company provides an Interleaved PFC reference design based on GS-family DSCs that accepts universal AC input and delivers up to 350W of high-voltage DC output. The DSPIC33FJ64GS606-I/PT implements average-current-mode PFC control with its 40 MIPS core executing the inner current loop and outer voltage loop, while the PWM phase-shift capability supports two-phase interleaving to reduce input ripple current and EMI filter size. The on-chip ADC digitizes the rectified input waveform for feedforward, and firmware handles brownout, inrush, and light-load burst operation without external analog control circuitry.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS systems, the DSPIC33FJ64GS606-I/PT controls the inverter bridge, battery charger, and transfer switch with one controller. Its high-speed PWM generates sinusoidal modulation for the inverter full-bridge, the ADC samples output voltage and current fast enough for a low-THD control loop, and multiple PWM generators handle the charger stage concurrently. The 64KB Flash accommodates full UPS firmware including AC-line synchronization, battery management state machines, and communications for status reporting. The industrial temperature rating (-40C to +85C) suits the enclosed, thermally stressed environment of UPS cabinets, and the 64-pin TQFP provides enough I/O for relays, fans, and front-panel indication alongside the power-control signals.
Recommended
Solar Inverters and Renewable Energy Conversion
Grid-tied solar micro-inverters and small string-inverter stages benefit from the DSPIC33FJ64GS606-I/PT's combination of high-speed PWM, fast ADC, and DSP arithmetic for maximum power point tracking (MPPT). At 40 MIPS, perturb-and-observe or incremental-conductance MPPT algorithms run alongside the inverter control loop without core saturation, and the single-cycle MAC accelerates the multiply-accumulate heavy portions of these algorithms. The on-chip comparators support hardware overcurrent protection for the power stage, while firmware implements anti-islanding and grid synchronization per the system's certification strategy. The 64-pin TQFP offers sufficient PWM channels to drive both the DC-DC boost stage and the DC-AC inverter stage from one controller.
Recommended
Industrial Motor Control and Automation
Beyond power supplies, the DSPIC33FJ64GS606-I/PT drives permanent-magnet and BLDC motors in industrial automation equipment. Its complementary PWM outputs with dead-time insertion directly drive three-phase bridges through gate drivers, the high-speed ADC supports field-oriented control (FOC) current sampling, and the DSP core computes Clarke/Park transforms and PI current loops at 40 MIPS. Encoder or hall-sensor inputs feed the timer modules for speed feedback. Compared with a general-purpose PIC18 MCU, the deterministic DSP pipeline and hardware quadrature/timer resources make closed-loop torque control practical at higher electrical frequencies. The industrial temperature grade and 3.3V I/O integrate cleanly into standard factory automation electronics architectures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64GS606-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64GS606-50I/PT | DSPIC33FJ32GS606-I/PT | DSPIC33FJ32GS608-50I/PT | DSPIC33FJ64GS606-50E/PT |
|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB | 32 KB | 32 KB | 64 KB |
| Maximum MIPS | 40 MIPS | 50 MIPS | 40 MIPS | 50 MIPS | 50 MIPS |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| DMA Channels | 4 | 4 | 4 | 4 | 4 |
| 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 | 3.0 V to 3.6 V |
| Typical Applications | SMPS, PFC, UPS, DC-DC | SMPS, PFC, UPS, DC-DC (faster loops) | SMPS, PFC (smaller firmware) | SMPS (cost-optimized, faster) | Automotive/extended-temp SMPS |
Key Differentiators
- Dedicated SMPS PWM peripheral (vs PIC18F26K80-I/SO)
- Double the Flash of the same-footprint sibling (vs DSPIC33FJ32GS606-I/PT)
- Industrial temperature grade at standard pricing (vs DSPIC33FJ64GS606-50E/PT)
- Cost floor within the 64-pin GS family (vs DSPIC33FJ32GS608-50I/PT)
Design Notes
Per the Microchip datasheet (DS70591), keep the trace length between the ICSP connector and the PGECx/PGEDx pins as short as possible for reliable in-circuit debugging. The device has multiple PGECx/PGEDx pairs; any pair may be used, but ICSPCLK and ICSPDAT must come from the same pair (e.g., PGEC2 with PGED2). Connect all VDD and VSS pins - do not leave any supply pin floating - and place 100 nF ceramic decoupling capacitors at each VDD/VSS pair plus one bulk capacitor per rail.
The DSPIC33FJ64GS606-I/PT operates from a 3.0V to 3.6V single supply. In digital power supplies, isolate the DSC's 3.3V rail from noisy gate-driver and power-stage rails with a ferrite bead or dedicated LDO to prevent PWM glitching from supply transients. If driving the DSC from a switching pre-regulator, ensure the rail stays above 3.0V at all load transients; brownout below this causes erratic PWM output. Estimated: a 3.3V LDO fed from 5V at typical DSC current of about 50 mA dissipates roughly 85 mW, well within a SOT-23 LDO rating.
Route the high-speed ADC input traces for current/voltage feedback away from PWM switching nodes to minimize injected switching noise; the ADC trigger is synchronized to the PWM time base, so sampling occurs at a quiet point in the cycle by design, but board-level coupling can still corrupt readings. Keep the analog ground reference for the ADC star-connected to a clean ground point. When using on-chip comparators for cycle-by-cycle current limiting, keep the shunt sense traces short, differential where possible, and close to the comparator input pins.
Confirm the speed grade in firmware: the -I/PT (40 MIPS) and -50I/PT (50 MIPS) variants are hardware-identical except maximum frequency, so code developed on a 50 MIPS part may silently run timing-critical loops 20% slower on this part. Also note the E-grade (-40C to +125C) variant exists for extended-temperature designs; the -I grade tops out at +85C ambient. Finally, when substituting 32KB Flash siblings (DSPIC33FJ32GS606), verify compiled code size including the linker reserve for ICSP bootloader space.
Compliance Information
Compliance statements were not present in the provided verified web data; consult the Microchip product page environmental section for RoHS/REACH declarations.
