DSPIC33EP32GS504-I/PT - 16-bit DSC 32KB 70MIPS | Microchip
MPN: DSPIC33EP32GS504-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.78 | $6.78 |
| 10 | $6.3 | $63.00 |
| 100 | $5.78 | $578.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $5.05 | $5,050.00 |
DSPIC33EP32GS504-I/PT Overview
A Digital Signal Controller combines the computational throughput of a digital signal processor with the peripheral integration and control flexibility of a microcontroller. In the power-management hierarchy, the DSC sits at the center of a digital power conversion system, closing control loops that were traditionally implemented with analog compensation networks, enabling programmable, adaptive, and communications-ready power stages.
The defining feature of the GS-series is its digital power peripheral set. The device integrates a high-speed PWM module with advanced modes suited to topologies such as interleaved boost, buck, half-bridge, and full-bridge converters, together with high-speed analog-to-digital conversion resources that allow control loops to be sampled and updated at switching frequency rates. According to Microchip product documentation, this controller is the basis for the Interleaved PFC reference design operating from a universal AC input and producing a single high-voltage DC output of up to 350W, which demonstrates the part's fitness for digital power designs.
With 70 MIPS of 16-bit DSP-grade core throughput, the DSPIC33EP32GS504 executes single-cycle multiply-accumulate operations, making Proportional-Integral (PI), Proportional-Resonant, and predictive control algorithms practical at high loop bandwidths. The 32KB self-programming Flash supports field firmware updates, an important capability for grid-connected equipment requiring long service lives.
Typical applications include interleaved power factor correction, digital AC-DC and DC-DC power supplies, solar micro-inverters, battery chargers, LED drivers, and telecom rectifiers. In each case, the combination of high-resolution PWM, fast ADC sampling, and DSP math replaces discrete analog control circuitry with a single programmable device.
When designing with this part, budget loop latency carefully: ADC sampling, control computation, and PWM duty update must all complete within one switching period, so pay attention to interrupt priority and use the hardware DSP multiply-accumulate instructions rather than software emulation for the inner loop.
This page adds value beyond the manufacturer datasheet by consolidating distributor pricing, same-package drop-in alternatives, application pairings, and practical design notes in a single citable reference.
Drop-in alternatives for DSPIC33EP32GS504-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 DSPIC33EP32GS504-I/PT (same form factor and footprint) — differing in Operating Temperature, Core Architecture, Analog Peripherals, Package, Flash Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS504-I/PT
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33EP64GS504
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GP504T-I/PT
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →DSPIC33EP256MC504-I/PT
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP32GS504-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Max CPU Speed | 70 MIPS |
| Flash Memory | 32 KB |
| Series | dsPIC33EP GS (Digital Power) |
| Package | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Target Application | Digital Power (SMPS, PFC) |
| Product Status | Active |
| Packaging | Tray |
| Typical Application Power | Reference design output up to 350 W (Interleaved PFC) |
DSPIC33EP32GS504-I/PT 44-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP32GS504-I/PT (44-tqfp (10x10 mm) 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 DSPIC33EP32GS504-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS504-I/PT is suitable for 6 applications: Interleaved Power Factor Correction, Digital AC-DC Power Supplies, DC-DC Converters and Point-of-Load Regulation, Solar Micro-Inverters and Renewable Energy Conversion, Battery Chargers and BMS Front-End Control, Digital LED Drivers and Lighting Power.
Interleaved Power Factor Correction
The DSPIC33EP32GS504-I/PT fits interleaved PFC directly: Microchip's own Interleaved PFC reference design is built on SMPS dsPIC DSCs of this family and delivers a universal-input, single high-voltage DC output of up to 350W, proving the controller can run two interleaved phase current loops plus a voltage loop within one switching period. Its 70 MIPS 16-bit DSP core executes the multiply-accumulate-heavy PI compensation in a fraction of the switching period, while the GS-series high-speed PWM generates phase-shifted, duty-modulated outputs with hardware dead-time control. Fast analog acquisition samples inductor currents near the switching instants, keeping loop delay low and THD low across the universal input range. Using a programmable DSC instead of an analog PFC controller also enables adaptive gain scheduling and digital protection features such as programmable over-current and brown-out thresholds.
Recommended
Digital AC-DC Power Supplies
In offline AC-DC supplies, the DSPIC33EP32GS504-I/PT replaces analog control ICs with firmware-implemented voltage-mode or current-mode control. The GS-series high-speed PWM supports the complementary and phase-shifted drive patterns needed by half-bridge, full-bridge, and LLC-style power stages, while the fast analog acquisition path samples output voltage and primary/secondary currents at rates matched to the switching frequency. The 70 MIPS DSP core sustains single-cycle multiply-accumulate operations, so PI or predictive control loops close with deterministic latency - essential for meeting transient response and hold-up specifications. The 32KB self-programmable Flash accommodates control firmware, housekeeping, and PMBus-style digital communication, and permits field firmware updates after deployment. Digital implementation also centralizes fault management: over-voltage, over-current, and over-temperature thresholds are set in software and logged, simplifying qualification for telecom and server power platforms.
Recommended
DC-DC Converters and Point-of-Load Regulation
For high-density DC-DC converters, the DSPIC33EP32GS504-I/PT closes digital current-mode loops on buck, boost, and buck-boost stages. The GS-series PWM module provides the high duty-resolution needed to keep limit-cycle oscillation out of the audio band at elevated switching frequencies, and the fast ADC path triggers on PWM events so sampling aligns exactly with the mid-duty or valley current instants, minimizing switching-noise corruption of the feedback signal. At 70 MIPS, the core computes the compensation update well within a single switching period, supporting bandwidths in the tens of kilohertz. Digital control enables telemetry (output current, temperature, fault counters) over the controller's serial interfaces, valuable in datacenter and telecom power shelves. Firmware scalability across the GS family - 16KB, 32KB, and 64KB Flash in the identical 44-TQFP footprint - lets one PCB serve multiple power-rating SKUs with a single BOM and layout.
Recommended
Solar Micro-Inverters and Renewable Energy Conversion
Grid-tied micro-inverters demand MPPT algorithms, current-shaping control, and grid protection all running simultaneously - a workload matched to the DSPIC33EP32GS504-I/PT's combination of DSP math throughput and power-specific peripherals. The 70 MIPS core runs MPPT perturb-and-observe or incremental-conductance routines alongside multiple inner current loops, while the GS-series PWM drives the interleaved boost and DC-AC stages with precise phase relationships. Fast analog acquisition tracks panel voltage/current and grid voltage/current waveforms for zero-crossing synchronization and anti-islanding detection. The industrial -40C to +85C rating suits rooftop environments, and the 32KB self-programmable Flash supports field updates as grid codes evolve. Because the same 44-TQFP footprint hosts 16KB and 64KB GS variants, product families can scale panel wattage without PCB respins, protecting development investment across product generations.
Recommended
Battery Chargers and BMS Front-End Control
Smart battery chargers benefit from the DSPIC33EP32GS504-I/PT's ability to run CC/CV charging profiles, coulomb-style state estimation, and protection logic in one programmable device. The high-speed PWM regulates the charging power stage across bulk, absorption, and float phases with smooth firmware-controlled transitions, while fast current sampling enforces cycle-by-cycle over-current protection. The 70 MIPS core leaves headroom for temperature-compensated charge algorithms and communication with the pack's management IC over serial interfaces. The -40C to +85C industrial rating covers automotive-adjacent and outdoor charging equipment, and the 32KB Flash stores multi-chemistry charging profiles selectable at runtime. Digital supervision also enables charge-log retention in Flash for warranty diagnostics - a feature analog charger controllers cannot offer without external memory and supervisory circuitry.
Recommended
Digital LED Drivers and Lighting Power
High-power LED drivers, including stage lighting, street lighting, and horticultural fixtures, use the DSPIC33EP32GS504-I/PT to regulate LED current with dimming resolution and flicker control unachievable with fixed analog drivers. The GS-series high-speed PWM generates both the power-conversion switching drive and a separate, high-resolution dimming channel, allowing pulse and amplitude dimming strategies that keep visible flicker below perceptible thresholds. Fast analog acquisition senses LED string current for tight regulation despite forward-voltage variation with temperature. The 70 MIPS core concurrently manages DALI/DMX-style digital communication and thermal derating curves, protecting the fixture at high ambient temperatures within the controller's -40C to +85C rating. Firmware-defined behavior also lets one hardware platform serve multiple fixture types through configuration, reducing inventory and qualification overhead for lighting manufacturers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS504-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS504-I/PT | DSPIC33EP64GS504 | DSPIC33EP32GP504T-I/PT | DSPIC33EP256MC504-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP - same |
| Flash Memory | 32 KB | 16 KB | 64 KB | 32 KB | 256 KB |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Core / Series | dsPIC33EP GS (digital power) | dsPIC33EP GS - same series | dsPIC33EP GS - same series | dsPIC33EP GP (general purpose) | dsPIC33EP MC (motor control) |
| Peripheral Focus | High-speed PWM + fast ADC for SMPS/PFC | Digital power (same as this product) | Digital power (same as this product) | General-purpose peripherals | Motor control (PWM/ADC oriented to motors) |
| Typical Application | SMPS, PFC, digital power | SMPS, PFC, digital power | SMPS, PFC with large firmware | General embedded control | Motor drives, motion control |
Key Differentiators
- Digital power peripheral set (GS series) (vs DSPIC33EP32GP504T-I/PT)
- Flash headroom for field updates (vs DSPIC33EP16GS504-I/PT)
- Purpose-fit sizing vs oversized motor-control part (vs DSPIC33EP256MC504-I/PT)
Design Notes
In digital power designs the ADC trigger alignment matters more than raw sample rate: configure the GS-series ADC to trigger from the PWM module at mid-duty or counter-valley so switching-node transients do not corrupt current feedback. Keep the analog sense traces routed away from PWM and gate-drive nets, use dedicated analog ground returns to the controller VSS, and place RC anti-alias filters at the ADC pins with corner frequencies comfortably above the control-loop bandwidth but below the switching frequency.
Budget loop latency explicitly: with 70 MIPS the control computation is fast, but interrupt latency, ADC conversion time, and PWM duty-shadow-latch timing together consume a meaningful share of a switching period at 200 kHz+. Measure the complete sample-to-PWM-update path in the MPLAB X simulator or with an oscilloscope on a spare pin, and reserve 20-30% timing margin so protection routines cannot overrun the loop. Failing to do this is the most common cause of loop instability when porting designs from lower-speed MCUs.
For the 44-TQFP (10x10 mm), use a solid ground plane under the device and place the 0.1 uF VDD decoupling capacitors within 2-3 mm of each supply pin pair, with one bulk 4.7-10 uF capacitor nearby. Route the high-speed PWM outputs (gate drive signals) as short, matched traces to the gate-driver inputs, and keep the crystal/oscillator loop compact with guard grounding. Use thermal reliefs-free direct connections for power/ground pours so the exposed paddle-equivalent thermal path through the leads is not compromised by thermal relief resistance.
Estimated: the 44-TQFP theta_JA on a standard 4-layer JEDEC board is typically on the order of 50-70 C/W (verify the exact figure in the Microchip datasheet). At an estimated core active current of a few tens of mA at 3.3 V and 70 MIPS, self-heating is roughly 0.1-0.5 W worst case with I/O loading, yielding only a 10-30 C junction rise - acceptable at +85C ambient but confirm with the datasheet power-consumption tables at your actual clock configuration and I/O load before finalizing derating.
Compliance Information
The retrieved distributor data (DigiKey, Mouser, LCSC, RS) does not explicitly state RoHS/REACH/lead-free status for this exact MPN; verify on the Microchip product page before regulatory submission.
