DSPIC33EP64GS504-E/PT - 16-bit DSC, 64KB Flash, Digital Power | Microchip
MPN: DSPIC33EP64GS504-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.25 | $62.50 |
| 100 | $5.9 | $590.00 |
| 500 | $5.75 | $2,875.00 |
| 1,000 | $5.61 | $5,610.00 |
DSPIC33EP64GS504-E/PT Overview
A digital signal controller combines a microcontroller (MCU) with digital signal processor (DSP) features in a single chip. In the power-management hierarchy, the dsPIC33EP GS50x family sits at the application level of digital power conversion systems, controlling switch-mode power supplies (SMPS), power factor correction stages, and inverter power stages. Unlike a general-purpose MCU, it integrates high-speed analog peripherals specifically aimed at closed-loop power control.
Key features of the GS50x family include high-speed ADCs for fast feedback sampling, on-chip DACs for comparator references and waveform generation, and dedicated PWM peripherals supporting common multi-loop digital SMPS topologies. The device belongs to the dsPIC33EP family, carries AEC-Q100 automotive qualification in the /E temperature variant, and is listed with Functional Safety (FuSa) support by Microchip.
Architecturally, the dsPIC33EP core is a modified Harvard 16-bit RISC engine with DSP instructions, a barrel shifter, and boundary-scan/JTAG debug support. The GS (SMPS) variant differentiates itself from the GP (general-purpose) variant through its power-conversion oriented analog and PWM subsystems, making it the preferred choice for digitally controlled converters rather than general embedded control.
Typical applications include AC-to-DC converters, interleaved power factor correction (PFC) stages (Microchip provides an interleaved PFC reference design rated up to 350W with universal AC input), DC-DC converters, solar micro-inverters, battery chargers, and LED drivers.
When designing with this device, budget the 3V to 3.6V supply rail carefully and verify PWM/ADC peripheral availability against the 44-pin package, since smaller pin-count variants expose fewer analog channels than 64-pin family members.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP64GS504-E/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 DSPIC33EP64GS504-E/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Series, Automotive Qualification.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GS504-I/PT
✅ Drop-In✓ In Stock
$3.35 / Unit
View Datasheet →DSPIC33EP64GP504T-E/TL
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →DSPIC33EP32GS504-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.75 / Unit
View Datasheet →DSPIC33EP128GS504
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GS504
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GS504-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP RISC with DSP instructions |
| Program Memory (FLASH) | 64KB (64K x 8) |
| Maximum Performance | 60 MIPS (up to 70 MIPS per family rating) |
| Supply Voltage | 3 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 44-TQFP (10x10 mm), 0.8 mm pitch |
| Mounting Type | Surface Mount |
| Family | dsPIC33EP GS50x (SMPS / Digital Power) |
| Analog Peripherals | High-Speed ADC and DAC |
| Target Applications | Digital Power SMPS, AC-DC, PFC, DC-DC |
| Automotive Qualification | AEC-Q100 |
| Functional Safety | FuSa supported (per Microchip classification) |
| Barrel Shifter | Yes |
| Boundary Scan | Yes |
| Bootloader Support | Dual-partition boot support (per family documentation) |
| Status | In Production |
DSPIC33EP64GS504-E/PT 44-tqfp (10x10 mm), 0.8 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33EP64GS504-E/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 DSPIC33EP64GS504-E/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP64GS504-E/PT is suitable for 6 applications: AC-DC Converter Digital Control, Interleaved Power Factor Correction (PFC), DC-DC Converters and Point-of-Load Supplies, Solar Micro-Inverters and Renewable Power Conversion, Battery Chargers and Battery Management, LED Drivers and Lighting Power.
AC-DC Converter Digital Control
The DSPIC33EP64GS504-E/PT is explicitly targeted by Microchip at AC-to-DC converter control, where the on-chip high-speed ADC samples input voltage, output voltage, and inductor or MOSFET current in a single switching cycle to close current-mode and voltage-mode loops digitally. The dedicated PWM peripherals of the GS50x family generate phase-shifted or complementary drive signals with programmable dead time, replacing analog control ICs and allowing control-law updates via firmware. Digital implementation adds adaptive compensation across universal input ranges and enables in-system tuning without hardware changes. The main trade-off versus a fixed analog controller is firmware complexity, offset by full configurability and telemetry.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip provides a dedicated Interleaved PFC reference design for the dsPIC33EP GS50x family that operates from universal AC input and delivers a single high-voltage DC output up to 350W, directly demonstrating this device's fit for PFC front ends. The controller interleaves two boost phases 180 degrees apart, using the high-speed ADC for per-phase inductor current sampling and the digital PWM module for phase management and current sharing. Digital control enables average-current-mode PFC with firmware-adjustable bandwidth and supports features such as phase shedding at light load for efficiency. The 44-TQFP package suits compact AC-DC board space where a 64-pin device is unnecessary.
Recommended
DC-DC Converters and Point-of-Load Supplies
For DC-DC conversion, the DSPIC33EP64GS504-E/PT closes voltage- and current-mode loops on buck, boost, buck-boost, and LLC topologies using its high-speed ADC to sample feedback at switching-frequency rates and its digital-power PWM to set duty cycle with fine resolution. Compared with analog PWM controllers, the digital approach allows soft-start profiling, nonlinear gain scheduling, and fault logging in firmware, which improves transient behavior and serviceability in telecom and server power bricks. The GS50x analog front end removes the need for external error amplifiers and reference ICs in many designs. Verify that the 44-pin variant exposes sufficient ADC channels for multi-output converters.
Recommended
Solar Micro-Inverters and Renewable Power Conversion
In solar micro-inverter and renewable converter designs, the DSPIC33EP64GS504-E/PT performs maximum power point tracking (MPPT), grid-synchronized current injection, and protection functions in one 16-bit DSC. The high-speed ADC samples panel voltage/current and grid waveform for phase-locked-loop synchronization, while the digital PWM drives the power stage with adaptive dead time. Running MPPT and control loops in firmware allows rapid algorithm updates as panel characteristics and grid codes evolve, a decisive advantage over hard-wired analog control. The -40C to +125C E-grade rating matches outdoor and rooftop thermal environments common in photovoltaic installations.
Recommended
Battery Chargers and Battery Management
The DSPIC33EP64GS504-E/PT implements multi-stage charging profiles (constant current, constant voltage, taper, and balancing) digitally, using the high-speed ADC for precise battery voltage and current telemetry and the DAC outputs as programmable thresholds for fast fault comparators. Firmware-defined charging curves let one hardware platform support multiple cell chemistries such as Li-ion, lead-acid, and LiFePO4, reducing SKU proliferation in charger products. The AEC-Q100 qualification and -40C to +125C range of the /E variant support automotive and industrial chargers exposed to wide ambient swings. Digital control also enables state-of-charge estimation algorithms to run on the same chip.
Recommended
LED Drivers and Lighting Power
Digitally controlled LED drivers benefit from the DSPIC33EP64GS504-E/PT's ability to combine switching-regulator control with dimming engines in a single chip. The digital PWM peripherals generate both the main power-stage drive and independent dimming waveforms (PWM and analog dimming via DAC), while the high-speed ADC closes current loops for consistent LED brightness across temperature and bin variations. Firmware-based control supports tunable-white color mixing, DALI/DMX-style protocol integration, and thermal foldback strategies that protect LED strings. The compact 44-TQFP (10x10 mm) footprint fits the constrained board area typical of luminaire driver modules.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64GS504-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS504-I/PT | DSPIC33EP64GP504T-E/TL | DSPIC33EP32GS504 | DSPIC33EP128GS504 | DSPIC33EP256GS504 |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Program Memory | 64KB | 64KB | 64KB | 32KB | 128KB | 256KB |
| Peripheral Family | GS (SMPS digital power) | GS (SMPS digital power) | GP (general purpose) | GS (SMPS digital power) | GS (SMPS digital power) | GS (SMPS digital power) |
| 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 (family rating) | 3 V to 3.6 V (family rating) | 3 V to 3.6 V (family rating) |
| Digital Power Peripherals (High-Speed ADC + DAC + SMPS PWM) | Yes | Yes | No (GP peripheral set) | Yes | Yes | Yes |
Key Differentiators
- Extended automotive temperature range in the same footprint (vs DSPIC33EP64GS504-I/PT)
- SMPS-optimized analog subsystem vs general-purpose siblings (vs DSPIC33EP64GP504T-E/TL)
- Right-sized 64KB memory balance (vs DSPIC33EP32GS504)
Design Notes
Supply the DSPIC33EP64GS504-E/PT from a regulated 3.3V rail held within the 3V to 3.6V window specified by LCSC and the family datasheet. In digital power designs the controller often shares a rail with gate drivers or housekeeping supplies; sequence and decouple it separately with local 0.1uF ceramics at each supply pin plus bulk capacitance, because PWM burst activity causes fast current transients. A brown-out below 3.0V during a converter transient can reset the controller mid-cycle, so verify rail stability under worst-case load steps with an oscilloscope, not just a DC meter.
Route the high-speed ADC feedback traces from shunts or dividers to the dsPIC33EP GS504 away from the PWM output traces and gate-drive loops; switched-node coupling into ADC inputs directly corrupts the current-mode control loop. Keep the analog reference path short, star-ground sensitive analog returns, and place the controller between the power stage and low-voltage signal conditioning in the PCB stackup. Follow the layout guidance in Microchip's digital power reference designs, such as the Interleaved PFC design, which demonstrates proven placement for this controller family.
Do not confuse the /PT (44-TQFP tray) suffix with 64-pin family members: the GS504 in 44 pins exposes fewer ADC and PWM channels than the GS506, and a design that fits the larger package will not port without re-mapping peripherals. Also confirm temperature suffix before purchase: -E/PT covers -40C to +125C while -I/PT stops at +85C, and substituting -I for -E in an automotive or outdoor design voids the thermal margin. Finally, verify dual-partition boot configuration early, as partitioned memory changes the effective code space from the nominal 64KB.
Compliance Information
Distributor listings classify the DSPIC33EP64GS504-E/PT as Automotive, AEC-Q100, dsPIC 33EP, Functional Safety (FuSa). RoHS/REACH/lead-free status not stated in the provided web data - confirm on the Microchip product page.
