DSPIC33EP16GS202-I/SO - 16-Bit DSC, 70 MIPS, 16KB Flash | Microchip
MPN: DSPIC33EP16GS202-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.41 | $4.41 |
| 10 | $4.1 | $41.00 |
| 100 | $3.85 | $385.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.25 | $3,250.00 |
DSPIC33EP16GS202-I/SO Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33EP16GS family sits above generic MCUs and below dedicated digital power ASICs, offering programmable control loops for AC-DC converters, DC-DC converters, power factor correction (PFC), battery chargers, and lighting ballasts. The DSC category is central to modern SMPS design, where firmware-defined control replaces analog compensation networks.
Key features include the 70 MIPS dsPIC33EP core with DSP engine, dedicated high-speed PWM peripherals for power conversion, an analog front end comprising high-speed ADC channels, a DAC, programmable gain amplifiers (PGA), and analog comparators as confirmed by distributor listings. According to the Microchip product page, the device status is In Production and it targets Digital Power SMPS, High Speed ADC, and DAC applications.
Architecturally, the dsPIC33EP16GS202 pairs a 16-bit pipelined core with single-cycle MAC and DSP instructions, enabling fast execution of PID and predictive control algorithms at switching frequencies in the hundreds of kHz range. The integrated analog subsystem allows direct connection of current and voltage sense signals, reducing external component count and BOM cost in power stages.
Typical applications include interleaved power factor correction (a Microchip reference design for this exact part targets PFC), digital SMPS control, LED lighting power supplies, and solar/battery charging converters where deterministic loop timing and fast analog feedback are mandatory.
Design consideration: the 28-pin SOIC provides 25 I/O-max pin options; carefully allocate PWM, ADC, and communication pins early, since digital power designs typically need current-sense ADC channels paired with specific PWM modules for synchronized sampling.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not consolidated on the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP16GS202-I/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 DSPIC33EP16GS202-I/SO (same form factor and footprint) — differing in Package, Core Architecture, Functional Safety Support, Flash Memory, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS202T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32GS202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.9 / Unit
View Datasheet →DSPIC33EP16GS502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.31 / Unit
View Datasheet →DSPIC33EP32GS502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16GS202-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC with DSP engine |
| Maximum CPU Speed | 70 MIPS |
| Flash Memory | 16 KB (16K x 8) |
| Operating Voltage | 3.3 V |
| Package | 28-SOIC (7.50 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial, I grade) |
| Target Application | Digital Power, SMPS, High Speed ADC, DAC |
| Analog Peripherals | High-speed ADC, DAC, PGA, comparators |
| Product Status | In Production (per Microchip) |
DSPIC33EP16GS202-I/SO 28-soic (7.50 mm width) Pin Configuration Guide
Pin configuration for DSPIC33EP16GS202-I/SO (28-soic (7.50 mm width) 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 DSPIC33EP16GS202-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP16GS202-I/SO is suitable for 6 applications: Digital SMPS Control, Interleaved Power Factor Correction, LED Lighting Power Supplies, Battery Charging Systems, Industrial Motor-Adjacent Power Conversion, High-Speed Precision Data Acquisition.
Digital SMPS Control
The DSPIC33EP16GS202-I/SO serves as the digital control core for switched-mode power supplies, replacing analog compensation networks with firmware-defined PID and predictive loops executed at 70 MIPS. Its dedicated high-speed PWM modules generate precisely timed gate drive signals with programmable dead time, while the high-speed ADC samples current and voltage feedback synchronized to the PWM cycle for clean, jitter-free loop data. On-chip PGA and comparators enable fast overcurrent protection independent of the CPU, a critical safety feature in power stages. Placed between the feedback divider/sense resistor and the power stage gate drivers, the controller closes voltage and current loops at switching frequencies suited to the 70 MIPS instruction budget, and the DAC supports software-defined reference thresholds for dynamic setpoint control.
Recommended
Interleaved Power Factor Correction
Microchip provides an official reference design for the dsPIC33EP16GS202 implementing an interleaved Power Factor Correction (PFC) converter, making this part a validated choice for AC-DC front ends in server, telecom, and industrial power supplies. The controller interleaves two boost phases with 180-degree phase-shifted high-speed PWM outputs, reducing input ripple current and easing EMI filter design. The high-speed ADC samples inductor current each switching cycle, synchronized to PWM, enabling average-current-mode control at 70 MIPS with DSP MAC instructions accelerating loop math. The comparators and DAC implement cycle-by-cycle overcurrent limiting with programmable thresholds, while firmware manages phase shedding at light load to preserve efficiency. Designers should budget code space within the 16KB Flash for control, protection, and housekeeping functions.
Recommended
LED Lighting Power Supplies
Digital LED drivers benefit from the DSPIC33EP16GS202-I/SO combination of high-speed PWM dimming control, precise current regulation, and integrated analog protection. The controller regulates LED current via the high-speed ADC sampling a sense resistor each PWM cycle, holding accuracy across line and load variations without analog trimming. Its PWM outputs drive buck, boost, or flyback stages at switching frequencies well supported by the 70 MIPS core, while a second PWM channel can generate precise dimming waveforms with wide contrast ratios. On-chip comparators provide hardware overcurrent shutdown faster than any software loop, protecting expensive LED strings. The 3.3V supply, industrial -40C to +85C temperature grade, and compact 28-SOIC package suit sealed luminaires and drivers with limited board area and wide ambient ranges.
Recommended
Battery Charging Systems
Smart chargers for lithium and lead-acid chemistries require accurate voltage/current profiling, temperature-qualified charging, and staged state machines, all of which the DSPIC33EP16GS202-I/SO implements in firmware. The high-speed ADC with PGA reads battery current through low-value shunts with programmable gain, and multiple analog inputs monitor pack voltage and thermistor temperature simultaneously. The 70 MIPS DSP core executes CC/CV and taper algorithms with ample headroom, while the DAC provides fine-grained reference levels for precision regulation thresholds. High-speed PWM controls the power conversion stage - buck, boost, or synchronous topologies - with deterministic timing. Hardware comparators give instantaneous overcurrent response during fault events such as shorted outputs, and the industrial temperature grade supports automotive-adjacent and outdoor charging installations.
Recommended
Industrial Motor-Adjacent Power Conversion
In industrial automation, auxiliary converters - servo drive auxiliary rails, regenerative front ends, and power supplies for motor controllers - demand the deterministic control the DSPIC33EP16GS202-I/SO provides. Its 70 MIPS core with single-cycle MAC executes control loops for active front ends and regenerative PFC stages, while the high-speed PWM modules produce the precisely phased gate signals these topologies require. The integrated high-speed ADC and PGA digitize phase currents and DC bus voltage with cycle-synchronized sampling, and hardware comparators implement fast fault blanking and shutdown. The -40C to +85C industrial temperature rating and robust 28-SOIC package fit control cabinets and drive enclosures. Firmware-based control also enables field-updatable compensation tuning, a significant service advantage over fixed analog control boards in factory equipment.
Recommended
High-Speed Precision Data Acquisition
Beyond power conversion, the DSPIC33EP16GS202-I/SO functions as a compact acquisition node: its high-speed ADC continuously samples analog channels, the PGA adapts sensor signal amplitudes to the converter range, and the DAC generates stimulus or reference waveforms. Microchip explicitly lists High Speed ADC and DAC among the device target applications. The 70 MIPS DSP core performs real-time filtering - IIR/FIR, RMS computation, or peak detection - using single-cycle MAC instructions, so processed results stream out over the serial interfaces without host intervention. The 3.3V industrial-grade 28-SOIC device integrates sensing, conversion, and processing in one chip, minimizing board area in condition-monitoring and instrumentation subassemblies. Designers should verify the exact ADC resolution and sample rate in the family datasheet section for their accuracy budget.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP16GS202-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS202T-I/SO | DSPIC33EP32GS202-I/SO | DSPIC33EP16GS502-I/SO | DSPIC33EP32GS502-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50mm) | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | 16-bit dsPIC33EP, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS |
| Flash Memory | 16 KB | 16 KB | 32 KB | 16 KB | 32 KB |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Temperature Range | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Digital Power Peripherals | High-speed PWM, ADC, DAC, PGA, comparators | Identical (same die) | Same analog set | GS502 PWM set - verify mapping | GS502 PWM set - verify mapping |
| Packaging Format | Tube | Tape & Reel | Tube | Tube | Tube |
Key Differentiators
- Purpose-built digital power analog subsystem (vs Generic 16-bit MCUs (e.g., PIC24 general-purpose parts))
- No-rework Flash upgrade path (vs DSPIC33EP32GS202-I/SO)
- Validated application provenance (vs Competing digital-power DSCs (different pinouts/packages))
Design Notes
For the 28-SOIC (7.50mm) footprint, decouple each VDD pin with a 0.1uF ceramic capacitor placed within 5mm of the pin, plus one bulk 4.7uF-10uF capacitor near the device. In digital power layouts, keep the controller's analog ground reference (VSS) tied to the power stage at a single star point to prevent high di/dt gate-drive return currents from corrupting ADC readings. Route sense traces to the ADC inputs as short differential or Kelvin-sensed pairs, away from PWM gate lines, and follow the layout guidance in the 344-page dsPIC33EP16GS family datasheet.
The controller runs from a 3.3V rail per distributor data. Estimated: at a typical operating current on the order of tens of mA, supply dissipation is below 0.2W, so the SOIC package needs no heatsink consideration for the IC itself; thermal focus should instead be on the surrounding power stage. Regulate the 3.3V rail with an LDO or buck rated for at least 100mA margin and monitor brown-out via the internal BOR/RESET features - verify exact supply current in the family datasheet electrical characteristics table rather than relying on this estimate.
Three frequent mistakes with this device: (1) assuming the /M6 (QFN) and /SO (SOIC-28) parts are interchangeable - they share the die but not the footprint; (2) writing code that overflows the 16KB Flash when adding communications on top of the control loop - the pin-compatible DSPIC33EP32GS202-I/SO is the no-rework fix; (3) using non-synchronized ADC sampling for current-mode control instead of triggering from the PWM module, which introduces jitter and audible noise. Configure the ADC to be PWM-triggered as shown in the Microchip interleaved PFC reference design for this exact part.
Compliance Information
Compliance status not explicitly stated in the verified web data retrieved for this part; confirm on the Microchip product page or LCSC C220022 listing before design-in.
