DSPIC33EP64GS504T-I/PT - 16-bit 70MIPS DSC 64KB Flash | Microchip
MPN: DSPIC33EP64GS504T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.62 | $46.20 |
| 100 | $4.18 | $418.00 |
| 500 | $3.8 | $1,900.00 |
| 1,000 | $3.45 | $3,450.00 |
DSPIC33EP64GS504T-I/PT Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and deterministic control of a microcontroller. Within the power-management hierarchy, the DSC sits above generic MCUs in control-loop capability: it replaces analog control circuits in switch-mode power supplies with firmware-executed PID compensators, closing current- and voltage-mode loops at hundreds of kilohertz. The dsPIC33EP family extends this with dedicated high-speed ADCs and PWM hardware purpose-built for power conversion.
Key features of this part include the 70 MIPS dsPIC33E core with DSP engine (single-cycle MAC, barrel shifter), 64KB self-programming FLASH, and an integrated high-speed ADC and DAC explicitly targeted at digital power per the manufacturer's product description. The device also carries Functional Safety (FuSa) documentation support, per DigiKey listing data, easing compliance workflows in industrial power systems.
The GS (Digital Power) variant differs from the GP (General Purpose) and MC (Motor Control) siblings in its peripheral set: high-resolution PWM modules and fast analog comparators are tuned for multi-loop SMPS topologies such as interleaved PFC, LLC, and buck/boost stages. Microchip's Interleaved Power Factor Correction reference design, rated up to 350W from universal AC input, demonstrates this family in a production-grade topology.
Typical applications include AC-to-DC converters, digital lighting power supplies, telecom rectifiers, solar micro-inverters, and battery chargers - anywhere multi-loop, high-frequency switch-mode control benefits from firmware flexibility and integrated high-speed analog.
Design consideration: the 3.0V to 3.6V supply window requires a clean local 3.3V rail; place 0.1uF decoupling at each VDD pair and follow Microchip's SMPS reference design layouts for the analog supply of the high-speed ADC to protect noise floor.
This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-25.
Drop-in alternatives for DSPIC33EP64GS504T-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 DSPIC33EP64GS504T-I/PT (same form factor and footprint) — differing in Package, Core, Operating Temperature, Packaging, Communication Interfaces.
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Request AlternativesDSPIC33EP64GS504T-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E, 16-bit DSC |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 64KB (64K x 8) FLASH |
| RAM Size | 8KB (8K x 8) |
| Supply Voltage Range | 3 V to 3.6 V |
| I/O Count | 35 |
| Package | 44-TQFP (10x10 mm), 0.8 mm pitch |
| Mounting Type | Surface Mount |
| Analog Peripherals | High Speed ADC, DAC |
| Product Family | dsPIC33EPXXGS50X (SMPS & Digital Power Conversion) |
| Functional Safety Support | Yes (FuSa) |
| Temperature Grade | -40C to +85C (I = Industrial) |
| Packaging | Tape & Reel (T suffix, /PT) |
| RoHS Status | Compliant |
DSPIC33EP64GS504T-I/PT 44-tqfp (10x10 mm), 0.8 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33EP64GS504T-I/PT (44-tqfp (10x10 mm), 0.8 mm pitch 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 DSPIC33EP64GS504T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP64GS504T-I/PT is suitable for 6 applications: AC-DC Digital Power Supplies, Interleaved Power Factor Correction (PFC), Telecom Rectifiers and Server PSU, Solar Micro-Inverters, Battery Chargers, Digital Lighting and HID Ballasts.
AC-DC Digital Power Supplies
The DSPIC33EP64GS504T-I/PT is purpose-built for digitally controlled AC-DC converters. Its 70 MIPS dsPIC33E core executes voltage- and current-loop compensators in firmware at switching frequencies far above what a generic 8- or 16-bit MCU can sustain, while the integrated high-speed ADC samples the switch current and output voltage with deterministic latency. The GS peripheral set adds PWM resolution and analog comparators needed for cycle-by-cycle current limiting. Used as the sole controller of an offline flyback, forward, or LLC stage, it replaces analog error amplifiers and simplifies trim and telemetry. The trade-off is firmware development effort versus analog controllers, offset by flexibility across output voltages and topologies.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip documents an Interleaved PFC reference design for the dsPIC33EP GS family that produces up to 350W from universal AC input, and the DSPIC33EP64GS504T-I/PT maps directly onto this topology. Interleaved PFC demands two phase-shifted PWM channels, per-phase inductor current sensing through the high-speed ADC, and average-current-mode compensation - all natively supported by the GS peripheral set. The 70 MIPS budget leaves headroom for power-metering and protection code alongside the control ISR. Firmware interleaving also enables phase shedding at light load for efficiency gains. Designers should follow the reference design's ADC trigger-to-PWM-update timing to minimize control-loop delay and preserve phase-current balance.
Recommended
Telecom Rectifiers and Server PSU
In telecom rectifier and server power-supply units, the DSPIC33EP64GS504T-I/PT acts as the digital supervisory and control device managing LLC or phase-shifted full-bridge stages. The 64KB FLASH holds control firmware plus PMBus-style telemetry, fault logging, and OTP calibration tables, while the 8KB RAM buffers real-time loop state. The industrial -40C to +85C grade suits telecom plant environments, and for thermally aggressive shelf locations the pin-identical E-grade DSPIC33EP64GS504T-E/PT covers -40C to +125C without PCB change. The 3V to 3.6V supply window allows direct powering from a standard 3.3V bias rail generated by an auxiliary flyback winding.
Recommended
Solar Micro-Inverters
Solar micro-inverter designs benefit from the DSPIC33EP64GS504T-I/PT's combination of fast analog acquisition and DSP math for MPPT (maximum power point tracking). The 70 MIPS core with single-cycle MAC executes perturb-and-observe or incremental-conductance MPPT algorithms concurrently with grid-synchronized inverter current control, while the high-speed ADC samples panel voltage/current and grid feedback. The 44-TQFP 10x10 footprint with 0.8 mm pitch fits the compact, conformally-coated PCBs typical of module-attached micro-inverters. Designers should budget FLASH for grid-standard compliance code (anti-islanding, fault ride-through) - a reason to select 64KB over the 32KB family member.
Recommended
Battery Chargers
Smart battery chargers use the DSPIC33EP64GS504T-I/PT to implement CC/CV charging profiles, termination detection, and safety supervision digitally. The high-speed ADC reads charge current, pack voltage, and NTC temperature on precisely timed trigger slots synchronized to the buck or buck-boost power stage PWM, reducing ripple-induced measurement error. The 70 MIPS core runs coulomb counting and charge-profile state machines with margin, and the 64KB FLASH stores multi-chemistry profiles and data logging. The 35 I/O count supports charger LED indication, I2C communication to a fuel gauge, and fault interlocks without external glue logic, consolidating the charger BOM around one controller.
Recommended
Digital Lighting and HID Ballasts
Digitally controlled lighting power supplies - LED drivers and HID ballasts - exploit the DSPIC33EP64GS504T-I/PT's GS analog front end for lamp-current regulation, ignition timing, and dimming interfaces. The high-speed ADC tracks lamp current and bus voltage each switching cycle, while PWM outputs drive half-bridge or flyback stages at fixed frequency with firmware-adjustable duty. The 70 MIPS core implements DALI/0-10V dimming protocol stacks in the remaining FLASH. Compared to analog ballast controllers, the digital approach adapts one hardware design across lamp wattages via firmware tables. The industrial temperature grade and Tape & Reel packaging support automated assembly in lighting production volumes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64GS504T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS504T-E/PT | DSPIC33EP32GS504T-I/PT | DSPIC33EP64MC504-I/PT | DSPIC33EP64GP504T-E/TL |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Program Memory | 64KB FLASH | 64KB FLASH | 32KB FLASH | 64KB FLASH | 64KB FLASH |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| Peripheral Specialization | Digital Power (GS): high-speed ADC + DAC for SMPS | Digital Power (GS) - same | Digital Power (GS) - same | Motor Control (MC) | General Purpose (GP) |
Key Differentiators
- Digital Power (GS) analog specialization (vs DSPIC33EP64GP504T-E/TL)
- Extended temperature drop-in option (vs DSPIC33EP64GS504T-E/PT)
- Memory headroom over cost-reduced sibling (vs DSPIC33EP32GS504T-I/PT)
Design Notes
The DSPIC33EP64GS504T-I/PT requires a regulated 3.0V to 3.6V supply. In digital-power designs, generate the 3.3V rail from an auxiliary winding or a small buck (e.g., Microchip MCP16301) and decouple every VDD/VSS pair with 0.1uF ceramics placed within 2 mm of the pins, plus one bulk 4.7uF-10uF per supply domain. Estimated: at 70 MIPS the core current draw is tens of milliamps (per datasheet electrical characteristics), so IR drop on a shared rail is minor, but supply noise directly degrades ADC accuracy - separate analog VDD per datasheet recommendations.
For SMPS applications, partition the 44-TQFP layout into a quiet digital/analog zone and a noisy power zone. Route the high-speed ADC inputs differentially or as short as possible to their sense networks, and guard them from PWM and gate-driver return currents with a local analog ground island tied to the main ground at a single point. Follow Microchip's Interleaved PFC reference design layout, which demonstrates ADC-to-PWM trigger routing for minimal loop delay. Keep the 0.8 mm pitch fan-out on outer layers to ease inspection.
Do not confuse the ordering-code suffixes: T = Tape & Reel, I = industrial (-40C to +85C), E = extended (-40C to +125C), PT = 44-TQFP 10x10, TL = thin TQFP variant. Mixing E- and I-grade parts on one assembly line is fine electrically but changes qualification paperwork. Also verify FLASH end-of-life budget: the 64KB self-programming FLASH supports limited erase/write cycles for parameter storage - use emulation libraries rather than raw single-cell writes, and reserve a FLASH page for wear-leveled parameter storage.
Compliance Information
RoHS compliant per standard Microchip dsPIC33EP ordering configuration; detailed REACH/halogen/conflict-minerals statements not present in provided listing data - request the official Microchip compliance declaration.
