DSPIC33EP16GS502T-E/SO - 16-Bit 70 MIPS DSC 16KB Flash | Microchip
MPN: DSPIC33EP16GS502T-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.61 | $3.61 |
| 10 | $3.29 | $32.90 |
| 100 | $2.95 | $295.00 |
| 500 | $2.7 | $1,350.00 |
| 1,000 | $2.45 | $2,450.00 |
DSPIC33EP16GS502T-E/SO Overview
A Digital Signal Controller combines the computational power of a DSP core with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33EP GS family sits at the controller layer of digital power systems, feeding PWM drivers that command MOSFETs and IGBTs in switched-mode converters. It is classified by Microchip under Microcontrollers with Functional Safety (FuSa) support.
Key features include the 70 MIPS 16-bit modified Harvard architecture core, the SMPS-oriented peripheral set with high-resolution PWM modules optimized for digital power, and industrial temperature rating (suffix -E, -40C to +85C). The tape-and-reel suffix (T) supports automated high-volume assembly. The 16KB FLASH provides dual EEPROM emulation and self-programming capability.
Technical depth: the GS family is purpose-built for SMPS and power-conversion control loops, pairing fast ADC sampling with PWM peripherals that support phase-shifted, interleaved, and complementary topologies. Microchip's Interleaved Power Factor Correction reference design based on this family operates over a universal input range and produces a single high-voltage DC output up to 350W, demonstrating the architecture's fitness for digital power.
Typical applications include interleaved PFC front ends, digital SMPS, DC-DC converters, battery chargers, and lighting ballasts, where deterministic loop timing and PWM precision determine efficiency and transient response.
Design consideration: run the core from a stable 3.0V to 3.6V supply and budget decoupling carefully, since power-conversion environments impose high switching noise on the controller rails.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP16GS502T-E/SO — 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 DSPIC33EP16GS502T-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Max CPU Speed, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS502-E/SO
✅ Drop-In✓ In Stock
$3.08 / Unit
View Datasheet →DSPIC33EP16GS502T-I/SO
✅ Drop-In✓ In Stock
$3.02 / Unit
View Datasheet →DSPIC33EP32GS502-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33EP64GS502T-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33EP16GS202T-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.96 / Unit
View Datasheet →DSPIC33EP16GS502T-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Max CPU Speed | 70 MIPS |
| Program Memory (FLASH) | 16KB (16K x 8) |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Extended, -E suffix) |
| Package | 28-SOIC (SOIC-28, surface mount) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Product Family | dsPIC33EP GS (SMPS/digital power) |
| Functional Safety Support | Yes (FuSa classified) |
| Application Optimization | Digital power / SMPS |
| Data Bus Width | 16 bit |
| Reference Design Output | Up to 350 W Interleaved PFC |
| RoHS Status | unknown |
DSPIC33EP16GS502T-E/SO 28-soic (soic-28, surface mount) Pin Configuration Guide
Pin configuration for DSPIC33EP16GS502T-E/SO (28-soic (soic-28, surface mount) 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 DSPIC33EP16GS502T-E/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP16GS502T-E/SO is suitable for 6 applications: Interleaved Power Factor Correction, Digital SMPS Control, DC-DC Converters, Battery Chargers, LED Lighting and Ballasts, Industrial Power Monitoring and Protection.
Interleaved Power Factor Correction
The DSPIC33EP16GS502T-E/SO is purpose-built for interleaved PFC: Microchip's own reference design for the SMPS dsPIC family uses universal AC input and produces a single high-voltage DC output up to 350W. The 70 MIPS core closes current-loop computations fast enough to balance phase currents in two-phase interleaved stages, while the GS-family high-resolution PWM generates phase-shifted gate commands with fine duty resolution. Interleaving halves input ripple current, reducing EMI filter size and boosting power density. Place the controller between the voltage/current feedback front end and the MOSFET gate drivers, budgeting ISR latency so the control loop settles within each switching period.
Recommended
Digital SMPS Control
In digitally controlled switched-mode power supplies, the DSPIC33EP16GS502T-E/SO replaces analog error-amplifier chains with firmware loops running at up to 70 MIPS. Its 16KB FLASH stores compensation coefficients and supports field firmware updates, while the GS-family ADC and PWM peripherals provide the sampling bandwidth and duty resolution needed for buck, boost, and flyback topologies. Digital control enables adaptive dead-time, soft-start shaping, and telemetry reporting that analog controllers cannot match. The -40C to +85C extended grade keeps loop timing stable across the full industrial ambient range. Keep the analog feedback traces short and away from switch nodes to protect ADC accuracy.
Recommended
DC-DC Converters
For telecom and industrial DC-DC bricks, the DSPIC33EP16GS502T-E/SO provides closed-loop regulation with programmable protection thresholds in a single 28-SOIC controller. The 3.0V to 3.6V core supply matches standard 3.3V bias rails, and 16KB FLASH holds multi-mode control (CC/CV, constant power) without external memory. The high-resolution PWM supports phase-shifted full-bridge and synchronous buck topologies with precise dead-time control, improving efficiency at light load. Firmware-based limits let one PCB serve multiple output ratings, cutting SKU count. Validate loop stability across temperature since the extended -E grade guarantees timing but not analog tolerance drift of external sense components.
Recommended
Battery Chargers
Smart battery chargers benefit from the DSPIC33EP16GS502T-E/SO's combination of 70 MIPS arithmetic throughput and GS-family PWM: it executes charging state machines, coulomb counting, and fast inner current loops concurrently. The 16KB FLASH accommodates Li-ion, lead-acid, and NiMH profiles in one firmware image, and the extended -40C to +85C rating suits automotive-adjacent and outdoor charging equipment. Digital implementation enables per-cell telemetry, adaptive termination criteria, and fault logging that linear chargers cannot provide. Implement independent hardware current and voltage limits in addition to firmware checks so a software fault cannot overcharge the pack.
Recommended
LED Lighting and Ballasts
High-brightness LED drivers and electronic ballasts use the DSPIC33EP16GS502T-E/SO to perform constant-current regulation, dimming (PWM and analog), and power-factor compliance in one chip. The 70 MIPS core interleaves the lighting control loop with communication tasks, while high-resolution PWM delivers smooth, flicker-free dimming across wide brightness ranges. The 28-SOIC package and 16KB FLASH keep BOM cost low for volume luminaires, and the -E temperature grade survives enclosed fixture environments. Digital dimming curves can be updated via firmware, enabling product families from one PCB. Watch radiated EMI: synchronize the PWM frequency away from sensitive detection bands and follow the datasheet layout guidance.
Recommended
Industrial Power Monitoring and Protection
Beyond control loops, the DSPIC33EP16GS502T-E/SO serves as the intelligence in power-quality monitors, trip units, and electronic breakers. Its 16-bit core executes RMS computation, harmonic analysis, and protection algorithms at 70 MIPS, and the FuSa (Functional Safety) classification noted by DigiKey supports safety-oriented development workflows. The extended -40C to +85C range fits unconditioned industrial cabinets, and 16KB FLASH retains calibration plus event logs with EEPROM emulation. Design a watchdog-supervised supervisor circuit and isolate measurement front ends optically or magnetically, since the controller shares ground with sampling circuitry exposed to mains-referenced transients.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP16GS502T-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS502-E/SO | DSPIC33EP16GS502T-I/SO | DSPIC33EP32GS502-E/SO | DSPIC33EP64GS502T-E/SO | DSPIC33EP16GS202T-E/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Memory | 16KB (16K x 8) | 16KB | 16KB | 32KB | 64KB | 16KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Temperature Grade | Extended (-E), -40C to +85C | Extended (-E) | Industrial (-I) | Extended (-E) | Extended (-E) | Extended (-E) |
| SMPS Peripheral Set | Full GS502 set | Full GS502 set | Full GS502 set | Full GS502 set | Full GS502 set | Reduced GS202 subset |
| Packaging Format | Tape & Reel (T) | Tube/cut tape (no T) | Tape & Reel (T) | Tube/cut tape (no T) | Tape & Reel (T) | Tape & Reel (T) |
Key Differentiators
- Extended temperature grade in low-cost SOIC (vs DSPIC33EP16GS502T-I/SO)
- Scalable FLASH on the same footprint (vs DSPIC33EP16GS502T-E/SO (vs 32/64KB variants))
- Full SMPS peripheral set vs reduced GS202 (vs DSPIC33EP16GS202T-E/SO)
Design Notes
Supply the DSPIC33EP16GS502T-E/SO from a well-regulated 3.3V rail within the 3.0V to 3.6V datasheet window. In SMPS environments, place a 0.1uF ceramic capacitor at each VDD/VSS pair plus a 4.7uF-10uF bulk capacitor close to the controller, and route VDD from a quiet node rather than the power-stage rail. Estimate: at typical core currents, dissipation is tens of milliwatts, so thermal design is trivial - noise immunity, not heat, is the design constraint here.
Keep ADC sense lines (current-shunt and output-voltage feedback) as short as possible and route them away from switch nodes and gate-drive traces; use a local analog ground island tied to the power ground at a single point. Decouple the VREF path per the datasheet. The 28-SOIC has generous 1.27mm pitch, simplifying hand inspection, but long thin feedback runs still pick up dv/dt coupling in a 350W-class PFC layout.
Do not confuse the temperature and packaging suffixes when ordering: -E is the extended grade (-40C to +85C), -I the industrial grade, and the T suffix denotes tape-and-reel only (DSPIC33EP16GS502-E/SO without T is the same silicon in tube). Also note a spec discrepancy in distributor listings: DigiKey snippet text mentions 60 MIPs while Mouser states 70MIPS - the family datasheet operating conditions say 'DC to 70 MIPS,' so treat 70 MIPS as the authoritative maximum and verify against the current official datasheet revision.
Compliance Information
Compliance status was not stated in the provided distributor data; verify RoHS/REACH on Microchip's official product page for the exact ordering code.
