DSPIC33EP32GS504-E/ML - 60 MIPS 16-bit DSC 44-QFN | Microchip
MPN: DSPIC33EP32GS504-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.67 | $46.70 |
| 100 | $4.35 | $435.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.75 | $3,750.00 |
DSPIC33EP32GS504-E/ML Overview
A Digital Signal Controller combines the computational architecture of a microcontroller with DSP features such as single-cycle multiply-accumulate and hardware divide, making the dsPIC DSC category a middle tier between general-purpose MCUs and dedicated DSPs. Within the power-management hierarchy, it acts as the digital control engine that closes feedback loops for converters and supplies.
Key features include a 16-bit dsPIC33EP core, high-speed 12-bit ADC with multiple sample-and-hold modules for simultaneous sampling, on-chip comparators and DACs dedicated to power-conversion feedback, PWM modules with advanced timing for SMPS topologies, and Functional Safety (FuSa) support per Microchip's product classification. The -E temperature suffix denotes extended operation from -40C to +125C, suiting harsh industrial environments.
Technically, the GS series integrates peripherals such as the High-Speed PWM with fault protection, 3.3V operation, and in-circuit programming (ICSP) via the PGC/PGD pins. The 44-QFN exposed-pad package offers low inductance and good thermal performance for dense power boards.
Typical applications include AC-DC and DC-DC digital power supplies, power factor correction (PFC) stages, LED drivers, and battery charging systems.
Design consideration: allocate PWM/ADC peripheral pin mapping early, since the analog input multiplexing constrains which pins can sense feedback signals.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS504-E/ML — 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-E/ML (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Flash Program Memory, Functional Safety Support.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS504-I/ML
✅ Drop-In✓ In Stock
$3.12 / Unit
View Datasheet →DSPIC33EP64GS504-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →DSPIC33EP16GS504-I/PT
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33EP32MC504-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.65 / Unit
View Datasheet →DSPIC33EP32GS504T-E/ML
✅ Drop-In✓ In Stock
$3.47 / Unit
View Datasheet →DSPIC33EP32GS504-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Series | dsPIC33EP GS50X (Digital Power SMPS) |
| Maximum CPU Speed | 60 MIPS |
| Flash Program Memory | 32 KB (32K x 8) |
| Package | 44-QFN (8x8 mm), Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| ADC Resolution | 12-bit high-speed |
| DAC | Yes (on-chip, per manufacturer product page) |
| Functional Safety Support | Yes (FuSa classified) |
| Automotive Qualification | AEC-Q100 capable family (per distributor classification) |
| Programming Interface | ICSP via PGC/PGD |
| Typical Application Domain | Digital Power SMPS |
| RoHS Status | Compliant |
| Unit Price (qty 1) | Approx. $4.669 (LCSC, as of 2026-09-25) |
DSPIC33EP32GS504-E/ML 44-qfn (8x8 mm), exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP32GS504-E/ML (44-qfn (8x8 mm), 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 DSPIC33EP32GS504-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS504-E/ML is suitable for 6 applications: AC-DC Digital Power Supplies, Interleaved Power Factor Correction (PFC), DC-DC Converters and Point-of-Load Supplies, Digital LED Drivers, Battery Charging Systems, Industrial Automation and Motor-Adjacent Control.
AC-DC Digital Power Supplies
The DSPIC33EP32GS504-E/ML is purpose-built for digitally controlled AC-DC power supplies, replacing analog control loops with firmware-executed control laws. Its 12-bit high-speed ADC samples output voltage and current feedback with low latency, while the SMPS-dedicated PWM modules drive primary-side switches in flyback, forward, and LLC topologies with cycle-by-cycle current limiting. The GS-series dedicated comparators and DACs create hardware fast-fault paths that trip within a single switching cycle, protecting the power stage during transient overload events. Running at up to 60 MIPS, the core sustains control-loop bandwidths suitable for switching frequencies in the hundreds of kilohertz. The -40C to +125C operating range of the -E grade covers industrial supply environments, and the 44-QFN 8x8 mm exposed-pad package minimizes ground inductance in dense switching layouts.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip publishes an interleaved PFC reference design specifically for the SMPS dsPIC DSC family that includes the DSPIC33EP32GS504-E/ML, making it a natural fit for power factor correction front ends. In interleaved boost PFC, two phases are switched 180 degrees out of phase to halve input ripple current; the dsPIC33EP core's DSP capability (single-cycle MAC) executes the average-current-mode control arithmetic while the high-speed ADC samples inductor currents in both phases. The PWM peripherals support phase-shifted complementary outputs with programmable dead time, and the dedicated comparators provide overcurrent protection per phase. Firmware flexibility allows adaptive phase management (phase shedding at light load) that analog controllers cannot offer, improving light-load efficiency by several percentage points in typical designs.
Recommended
DC-DC Converters and Point-of-Load Supplies
For digitally controlled DC-DC converters, the DSPIC33EP32GS504-E/ML provides the control loop, telemetry, and protection in a single 44-pin device. The high-speed 12-bit ADC streams output voltage and current samples into a PID or nonlinear control routine executing on the 60 MIPS core, while the SMPS PWM block generates complementary synchronous-rectifier drive with adaptive dead time. Dedicated on-chip DACs set the current-limit thresholds for the fast comparators, creating a hardware protection layer independent of firmware latency - critical during short-circuit events in point-of-load converters. The extended -40C to +125C temperature grade supports outdoor telecom and industrial rails. The 44-QFN package's exposed pad conducts package heat into the PCB, and its small 8x8 mm footprint fits typical POL board areas.
Recommended
Digital LED Drivers
The DSPIC33EP32GS504-E/ML suits high-power LED driver designs requiring precise current regulation, dimming, and fault management. The SMPS PWM peripherals drive buck or boost LED stages at switching frequencies where output ripple is invisible, while the 12-bit high-speed ADC closes the constant-current loop with resolution fine enough for accurate dimming curves. Dedicated comparators implement fast open-circuit and short-circuit protection, essential for LED string reliability. Firmware-based control enables features analog drivers cannot match: color-temperature mixing across multiple channels, scheduled dimming profiles, and communication-based control (the device supports standard serial interfaces) for smart lighting systems. The -E grade's 125C rating tolerates LED-driver thermal environments where junction temperatures near luminaires routinely exceed 85C ambient.
Recommended
Battery Charging Systems
In digitally controlled battery chargers, the DSPIC33EP32GS504-E/ML implements full CC/CV (constant-current/constant-voltage) charging profiles in firmware, adapting to battery chemistry without hardware changes. The high-speed ADC samples charge current and pack voltage simultaneously, the PWM stage drives the power conversion stage with cycle-by-cycle current limiting, and the dedicated comparator/DAC pairs enforce hardware overcurrent and overvoltage cutoffs independent of software latency. The 60 MIPS core has headroom for state-of-charge estimation algorithms, temperature-compensated charging via an NTC input, and safety timers. The -40C to +125C operating range of the -E grade covers automotive and industrial charger installations, and the 44-QFN footprint keeps the controller section compact on charger PCBs.
Recommended
Industrial Automation and Motor-Adjacent Control
Beyond pure power conversion, the DSPIC33EP32GS504-E/ML serves industrial control nodes that combine power electronics with sensing: heater controllers, welding supplies, electrostatic equipment, and auxiliary supplies feeding motor drives. The dsPIC33EP core's DSP instructions accelerate filtering and transform calculations, the 12-bit ADC handles multiple sensor channels, and the extended temperature grade survives panel and enclosure environments. Standard serial peripherals connect to plant networks and HMIs. The Functional Safety (FuSa) classification of this family supports designs progressing toward IEC functional-safety assessments, though full certification depends on the overall system. For designs where the control focus shifts to the motor itself, Microchip's companion dsPIC33EP MC-series (e.g., dsPIC33EP32MC504) shares the same core and footprint with motor-control-oriented peripherals.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS504-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS504-I/ML | DSPIC33EP64GS504-I/ML | DSPIC33EP16GS504-I/PT | DSPIC33EP32MC504-I/ML | DSPIC33EP32GS504T-E/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-TQFP (different footprint) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB (32K x 8) | 32 KB | 64 KB (+100%) | 16 KB (-50%) | 32 KB | 32 KB |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| Peripheral Focus | Digital Power SMPS (GS) | Digital Power SMPS (GS) | Digital Power SMPS (GS) | Digital Power SMPS (GS) | Motor Control (MC) | Digital Power SMPS (GS) |
Key Differentiators
- Extended -40C to +125C temperature grade (vs DSPIC33EP32GS504-I/ML)
- Digital-power (GS) peripheral specialization (vs DSPIC33EP32MC504-I/ML)
- Footprint-compatible Flash upgrade path (vs DSPIC33EP64GS504-I/ML)
Design Notes
The 44-QFN 8x8 mm package has a central exposed pad that must be soldered to a grounded copper pour for both thermal dissipation and low-inductance ground return - essential in switching power applications where the controller grounds carry PWM return currents. Use an array of small thermal vias (0.3 mm diameter) under the pad connecting to inner ground planes. Verify the QFN pad pattern against the Microchip datasheet land-pattern recommendation, and specify an adequate solder-paste stencil (typically 50-80% coverage on the pad) to prevent voiding.
Analog pin assignments on the GS-series are constrained by the high-speed ADC multiplexer: not every GPIO can sense every feedback signal. Map your voltage/current sense nets, comparator inputs, and PWM outputs against the pin diagram in the datasheet before routing the PCB, because re-mapping late in layout usually forces a board respin. Also reserve PGC/PGD access for ICSP programming - burying these pins under a connector or testing them out of circuit complicates production programming.
Operating at 60 MIPS with the high-speed ADC and PWM peripherals active raises supply-rail transient demands. Decouple each VDD pin with 100 nF ceramic capacitors placed within 2 mm of the pin, and add bulk capacitance (4.7 uF to 10 uF) near the device. Keep the analog supply path clean by filtering digital switching noise; the SMPS PWM edges share the same die and can couple into ADC readings if decoupling is inadequate. Estimated: a 10x reduction in ADC noise is commonly achieved with proper local decoupling versus shared long traces.
Route PWM outputs to gate drivers with attention to loop area and keep ADC sense traces away from PWM and gate-driver traces to avoid falsely triggering the dedicated comparators. Where sense lines cross switching nodes, add local RC filtering sized to the ADC sampling scheme per the datasheet's analog connection guidance. Twisted or paired routing of each PWM output with its return reduces radiated emissions from the control section.
Compliance Information
RoHS compliance and lead-free finish consistent with current Microchip production parts. Distributor classifications reference AEC-Q100-capable family and Functional Safety (FuSa) categories; verify specific qualification documentation with Microchip for automotive programs.
