DSPIC33EP32GS202T-I/SO - 16-bit 70 MIPS DSC 32KB | Microchip
MPN: DSPIC33EP32GS202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.75 | $3.75 |
| 10 | $3.45 | $34.50 |
| 100 | $3.1 | $310.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.6 | $2,600.00 |
DSPIC33EP32GS202T-I/SO Overview
A digital signal controller combines the compute architecture of a microcontroller with the mathematical throughput of a DSP. In the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP: it runs firmware, supervises communication, and executes the fast control loops (current-mode, voltage-mode, PFC) that switching power supplies and motor drives demand. Microchip positions the dsPIC33EP family squarely in this embedded control tier.
Key features of the GS-series variant include a 70 MIPS dsPIC33E core, 32KB (32K x 8) FLASH program memory, and the high-resolution digital power peripherals that distinguish GS from GP parts, making it purpose-built for switch-mode power supply control. The device belongs to Microchip's Functional Safety (FuSa) supported dsPIC33EP lineup, easing IEC-oriented safety documentation for industrial products.
Architecturally, the controller couples the 16-bit dsPIC CPU with DSP multiply-accumulate instructions, enabling single-cycle MAC operations used in digital loop compensation filters. The GS202 family data sheet (document DS70005208E) covers the dsPIC33EPXXGS202 family shared by this part.
Typical applications include interleaved power factor correction (Microchip's 350W universal-input PFC reference design targets this controller family), digital SMPS and LLC power conversion, and digital lighting or motor-adjacent power control. The 28-SOIC package suits board-level power controllers where wave-solderable, hand-inspectable packages are preferred.
Design consideration: budget the core regulator capacitor on the VCAP pin and decouple the 3.3V rail close to the supply pins; keep the high-frequency PWM routing away from the analog inputs used for current sensing.
This page synthesizes distributor stock, pricing tiers, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202T-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 DSPIC33EP32GS202T-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, ADC Resolution, Core Processor.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP32GS202T-E/SO
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View Datasheet →DSPIC33EP32GP502T-E/SO
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View Datasheet →DSPIC33EP16GS202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP256MC202-H/SO
✅ Drop-In✓ In Stock
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View Datasheet →DSPIC33EP32GS202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Maximum CPU Speed | 70 MIPS |
| Program Memory (FLASH) | 32KB (32K x 8) |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Product Family | dsPIC33EP GS-series (Digital Power) |
| Functional Safety Support | Yes (FuSa) |
| Perforated Application Focus | Digital SMPS / PFC control |
| Tape and Reel | Yes (T suffix) |
DSPIC33EP32GS202T-I/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/RB0 — Analog input 0 / port B bit 0 |
| Pin 3 | AN1/RB1 — Analog input 1 / port B bit 1 |
| Pin 4 | AN2/RB2 — Analog input 2 / port B bit 2 |
| Pin 5 | AN3/RB3 — Analog input 3 / port B bit 3 |
| Pin 6 | RA0 — Port A bit 0 (multiplexed peripheral I/O) |
| Pin 7 | RA1 — Port A bit 1 (multiplexed peripheral I/O) |
| Pin 8 | OSC1 — External oscillator/crystal input |
| Pin 9 | OSC2/CLKO — Crystal output / clock output |
| Pin 10 | RA2 — Port A bit 2 (multiplexed peripheral I/O) |
| Pin 11 | RA3 — Port A bit 3 (multiplexed peripheral I/O) |
| Pin 12 | RA4 — Port A bit 4 (multiplexed peripheral I/O) |
| Pin 13 | AVSS — Analog ground |
| Pin 14 | RB4 — Port B bit 4 (multiplexed peripheral I/O) |
| Pin 15 | RB5 — Port B bit 5 (multiplexed peripheral I/O) |
| Pin 16 | RB6 — Port B bit 6 (multiplexed peripheral I/O) |
| Pin 17 | RB7 — Port B bit 7 (multiplexed peripheral I/O) |
| Pin 18 | RB8 — Port B bit 8 (multiplexed peripheral I/O) |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Power supply (3V to 3.6V) |
| Pin 21 | RB9 — Port B bit 9 (multiplexed peripheral I/O) |
| Pin 22 | RB10 — Port B bit 10 (multiplexed peripheral I/O) |
| Pin 23 | RB11 — Port B bit 11 (multiplexed peripheral I/O) |
| Pin 24 | RB12 — Port B bit 12 (multiplexed peripheral I/O) |
| Pin 25 | RB13 — Port B bit 13 (multiplexed peripheral I/O) |
| Pin 26 | RB14 — Port B bit 14 (multiplexed peripheral I/O) |
| Pin 27 | VCAP/VDDCORE — Internal core regulator capacitor connection |
| Pin 28 | AVDD — Analog power supply |
Typical Applications
DSPIC33EP32GS202T-I/SO is suitable for 6 applications: Interleaved Power Factor Correction, Digital Switch-Mode Power Supplies (SMPS), Industrial Control and Embedded Automation, Motor Control and Metering, IoT and Low-Power Embedded Devices, Digital Lighting and LED Driver Control.
Interleaved Power Factor Correction
Microchip explicitly targets this controller family with an Interleaved PFC reference design that accepts a universal AC input and produces a single high-voltage DC output up to 350W. The DSPIC33EP32GS202T-I/SO fits this role because its 70 MIPS 16-bit core and GS-series digital power peripherals can sample inductor currents and update PWM duty cycles fast enough for interleaved boost stages. The controller runs the average-current-mode compensation loop in firmware while supervising housekeeping tasks such as inrush, brown-out, and protection. Placing the controller between the input bridge and the boost power stage with filtered current-sense inputs yields a fully digital PFC whose gains can be retuned in software, eliminating analog compensation redesign when the power stage changes.
Recommended
Digital Switch-Mode Power Supplies (SMPS)
The GS-series designation of the DSPIC33EP32GS202T-I/SO exists specifically for switch-mode power supply control. In a digital SMPS, the controller replaces the analog PWM modulator and error amplifier: it samples output voltage and current through the ADC, executes a discrete compensation filter using single-cycle DSP MAC instructions available on the 70 MIPS core, and drives the power switch through high-resolution PWM outputs. This architecture supports LLC, buck, boost, and flyback topologies with firmware-tunable transient response. The 28-SOIC package suits isolated and non-isolated board-level converters of roughly 50W to 350W, and Microchip's digital power reference designs and Power Converter libraries shorten firmware bring-up compared to a from-scratch loop design.
Recommended
Industrial Control and Embedded Automation
The DSPIC33EP32GS202T-I/SO is listed by distributor product data as an embedded microcontroller for industrial control, embedded automation, and low-power board designs. Its -40C to +85C industrial temperature rating, 3V to 3.6V operation, and Functional Safety (FuSa) support make it appropriate for factory equipment that must document failure-mode behavior. The 70 MIPS 16-bit core handles deterministic sensor polling and actuator timing, while the DSP capability supports filtering of noisy industrial signals such as current and vibration measurements. In automation nodes, the controller typically closes local control loops and reports upstream over UART/SPI/I2C to a gateway; the wide dsPIC33EP family lets engineers scale FLASH and peripherals without changing the pin-compatible 28-SOIC footprint or the MPLAB X toolchain.
Recommended
Motor Control and Metering
Distributor descriptions place this part in motor control and metering applications alongside digital power. For metering, the 16-bit DSP core efficiently computes RMS values, power factor, and energy accumulation from sampled voltage and current channels, with firmware precision adjustable beyond what fixed analog meters provide. For small motor drives (fans, pumps, single-phase BLDC), the GS-series PWM and ADC timing can commutate low-power motors while supervising current limits. The industrial temperature range covers enclosed meter cabinets and drive environments. Note that for heavier three-phase motor control, Microchip's MC-series parts in the same SOIC-28 pin map (for example DSPIC33EP256MC202) provide motor-control-specific peripherals and far more program memory, so evaluate both before finalizing the 28-pin footprint.
Recommended
IoT and Low-Power Embedded Devices
The DSPIC33EP32GS202T-I/SO appears in IoT node and low-power board designs in distributor category data. Its 3V to 3.6V supply matches standard 3.3V rails, and the dsPIC33EP core supports low-power operating modes useful in always-on sensing nodes that wake periodically to sample, compute, and transmit. The 32KB FLASH accommodates a protocol stack plus application logic for compact IoT endpoints such as smart lighting controllers, power-monitoring plugs, and sensor concentrators. The SOIC package is hand-solderable for prototyping and wave-solderable in volume, an advantage over fine-pitch QFN for low-volume IoT builds. Designers should budget the core regulator capacitor and verify sleep-mode current against the family data sheet when battery-backed operation is required.
Recommended
Digital Lighting and LED Driver Control
Digital lighting benefits directly from the GS-series digital power peripherals of the DSPIC33EP32GS202T-I/SO. LED drivers, dimmers, and electronic ballasts are switching converters whose output current must be regulated and modulated for dimming; a 70 MIPS DSC can run the converter control loop and the dimming engine in one chip, receiving DALI, PWM, or analog dim commands on its communication peripherals. Firmware-based control allows adaptive compensation for LED forward-voltage drift over temperature and lifetime. The 28-SOIC package with -40C to +85C rating fits enclosed luminaires, and the 32KB FLASH stores both control firmware and lighting communication stacks, consolidating two chips that analog driver designs typically require.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS202-I/SO | DSPIC33EP32GS202T-E/SO | DSPIC33EP32GP502T-E/SO | DSPIC33EP16GS202-I/SO | DSPIC33EP256MC202-H/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 | 28-SOIC (7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC33E, 70 MIPS | 16-bit, 70 MIPS - identical | 16-bit, 70 MIPS - identical | 16-bit, 70 MIPS - identical | 16-bit, 70 MIPS - identical | 16-bit, 70 MIPS - identical |
| FLASH Program Memory | 32KB (32K x 8) | 32KB | 32KB | 32KB | 16KB (-50%) | 256KB (8x) |
| Peripheral Series | GS-series (digital power) | GS-series | GS-series | GP-series (general purpose) | GS-series | MC-series (motor control) |
| Packaging Format | Tape & Reel (T suffix) | Tube / tray (no T suffix) | Tape & Reel | Tape & Reel | Tube / tray | Tube / tray |
| Digital Power Fit (SMPS/PFC) | Native (GS-series target application) | Native | Native | Not optimized (GP peripherals) | Native | Motor-control optimized, not GS PWM set |
Key Differentiators
- GS-series digital power peripheral set (vs DSPIC33EP32GP502T-E/SO)
- 32KB FLASH headroom in 28-SOIC (vs DSPIC33EP16GS202-I/SO)
- Tape-and-reel packaging for automated assembly (vs DSPIC33EP32GS202-I/SO)
Design Notes
Supply the DSPIC33EP32GS202T-I/SO from a clean 3.0V to 3.6V rail, typically 3.3V. Place the VCAP/VDDCORE capacitor (per the value specified in the dsPIC33EPXXGS202 family data sheet DS70005208E) as close to pin 27 as possible - this internal regulator capacitor is the most common cause of unreliable startup when omitted or mis-placed. Decouple each VDD pin with a 0.1uF ceramic in parallel with a bulk 4.7uF to 10uF capacitor. Keep the analog supply (AVDD, pin 28) filtered - for digital power designs, an RC or ferrite filter from the digital rail significantly improves ADC current-sense accuracy.
In SMPS and PFC layouts, separate the power switching loop from the controller: route high-di/dt PWM outputs (gate-drive signals) with short traces and keep them away from the ADC sense inputs on port B analog pins. Use a solid ground plane with a single-point connection between power ground and controller ground near the AVSS pin. The 28-SOIC (7.50mm) package is wave-solderable and hand-inspectable, but its 1.27mm pitch limits thermal dissipation into the board, so in hot enclosures verify junction temperature with the -E temperature-grade part if ambient approaches +85C.
Do not substitute a GP-series part (e.g., DSPIC33EP32GP502) into a GS-series power-conversion socket: the peripheral sets differ and the firmware will not drive the same PWM/ADC registers. Also confirm which package code your PCB footprint was drawn for - /SO is SOIC-28, /SS is SSOP-28, and /MM is QFN-S - these are not footprint-compatible. Finally, use Microchip XC16 compiler and the correct device selection in MPLAB X; code compiled for GP/MC variants of the same core usually recompiles cleanly, but peripheral initialization code must be re-validated.
Compliance Information
Compliance status was not stated verbatim in the retrieved web data; verify RoHS/REACH and material declarations on the official Microchip product page (microchip.com/en-us/product/dsPIC33EP32GS202) before contractual reliance.
