DSPIC33EP32GS202-E/SS - 16-bit DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32GS202-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.26 | $5.26 |
| 10 | $4.74 | $47.40 |
| 100 | $4.1 | $410.00 |
| 500 | $3.6 | $1,800.00 |
| 1,000 | $3.2 | $3,200.00 |
DSPIC33EP32GS202-E/SS Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and control peripherals of a microcontroller, sitting within the broader hierarchy of embedded processors: DSC -> 16-bit MCU -> microcontroller -> semiconductor. DSCs like the dsPIC33EP family are the standard choice in switch-mode power supplies, digital lighting, and motor control, where a conventional MCU lacks the ADC speed and DSP math capability needed for closed-loop control at switching frequencies of hundreds of kilohertz.
Key features include the 16-bit dsPIC33E core with DSP engine (multiply-accumulate, modulo addressing), 32KB (32K x 8) Flash, dedicated high-speed analog-to-digital converters designed for digital power conversion, and an on-chip DAC. The device is part of the dsPIC33EPXXGS202 family and is marketed by Microchip specifically for Digital Power SMPS applications, with Functional Safety (FuSa) support noted by distributors.
Technically, the GS202 family features separate program and data memory spaces and buses (Harvard architecture), allowing instruction fetch and data access to occur simultaneously - a key enabler of the 70 MIPS throughput. On-chip PWM modules, comparators, and high-speed ADC sampling support peak-current-mode and voltage-mode power converter control loops entirely in firmware.
Typical applications include switch-mode power supplies (SMPS), interleaved power factor correction (PFC) - Microchip publishes a 350 W interleaved PFC reference design based on this controller family - LED drivers, and precision motor control systems.
Design consideration: the -E/SS suffix denotes the extended (-40C to +125C) temperature variant in SSOP; verify thermal budget and confirm the exact MIPS rating and supply voltage in the family data sheet, since distributor listings have shown both 60 and 70 MIPS figures for this family.
This page synthesizes distributor pricing from DigiKey, Mouser, Octopart and Heisener, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202-E/SS — 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 DSPIC33EP32GS202-E/SS (same form factor and footprint) — differing in Package, Operating Temperature, ADC Resolution, Core, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS202-I/SS
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →DSPIC33EP16GS202T-E/SS
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →DSPIC33EP16GS202-I/SS
✅ Drop-In✓ In Stock
$2.79 / Unit
View Datasheet →DSPIC33EP32MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.68 / Unit
View Datasheet →DSPIC33EP32MC202-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33EP32GS202-E/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E, 16-bit DSC |
| Program Memory Size | 32KB (32K x 8) Flash |
| Package | 28-SSOP (0.209 inch, 5.30 mm width) |
| Family | dsPIC33EPXXGS202 |
| Target Application | Digital Power SMPS, High Speed ADC, DAC |
| Operating Temperature | -40C to +125C (E grade, extended) |
| Mounting Type | Surface Mount |
| Functional Safety | FuSa supported (per DigiKey categorization) |
DSPIC33EP32GS202-E/SS 28-ssop (0.209 inch, 5.30 mm width) Pin Configuration Guide
Pin configuration for DSPIC33EP32GS202-E/SS (28-ssop (0.209 inch, 5.30 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 DSPIC33EP32GS202-E/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS202-E/SS is suitable for 6 applications: Digital Switch-Mode Power Supplies (SMPS), Interleaved Power Factor Correction (PFC), Digital LED Drivers and Lighting, Precision Motor Control, Solar Micro-Inverters and DC-DC Converters, Battery Chargers and Wireless Power.
Digital Switch-Mode Power Supplies (SMPS)
The DSPIC33EP32GS202-E/SS is explicitly marketed by Microchip for Digital Power SMPS applications, and this is its primary design target. Digital power replaces analog compensators with firmware: the high-speed ADC samples the output voltage and inductor current each switching cycle, the 70 MIPS DSP core executes the PID or 3p3z control law with multiply-accumulate instructions, and the on-chip PWM updates duty cycle with cycle-by-cycle resolution. Running the loop digitally at several hundred kHz switching frequency gives adaptive compensation, programmable soft-start, and telemetry that analog controllers cannot offer. The integrated DAC provides programmable reference or ramp generation, removing external components. The extended -40C to +125C grade suits power supplies mounted near hot power stages.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip publishes a dedicated Interleaved PFC reference design based on this dsPIC DSC family, which operates from a universal AC input range and produces a single high-voltage DC output up to 350 W of power. Interleaving two boost phases halves input current ripple and spreads thermal load, but requires precise phase-shifted PWM and fast average-current-mode control - exactly what the GS202's PWM phase-shift capability and high-speed ADC deliver. The DSP core executes the current loop each switching cycle while the same firmware computes RMS line voltage and implements brownout and inrush limiting. The 32KB Flash holds the full PFC state machine, protection handlers, and optional PMBus-style communication, and the extended temperature rating tolerates the elevated ambient inside power-factor-corrected supplies.
Recommended
Digital LED Drivers and Lighting
High-brightness LED drivers benefit directly from the DSPIC33EP32GS202-E/SS's digital-control architecture. The on-chip PWM modules generate both the switching frequency for the buck/boost LED stage and independent dimming channels (PWM or analog dimming via the integrated DAC), while the high-speed ADC samples LED current for closed-loop regulation with sub-cycle response. Because the control law is firmware, one hardware design can serve multiple LED load profiles - constant current, constant luminous flux, or color-mixed RGBW - by reflashing firmware. The extended -40C to +125C temperature range covers enclosed luminaires and street-lighting heads where ambient temperatures routinely exceed +85C, and the DSP throughput leaves headroom for DALI or DMX communication stacks in the same 32KB Flash.
Recommended
Precision Motor Control
Microchip states that its dsPIC33E family of digital signal controllers, with the 70 MIPS DSP core and enhanced on-chip peripherals, enables high-performance precision motor control systems. The DSPIC33EP32GS202-E/SS executes field-oriented control (FOC) for PMSM and BLDC motors: the high-speed ADC samples phase currents at PWM-synchronized instants, the DSP engine computes Clarke/Park transforms and the current-loop PI compensators within a single PWM period, and the PWM modules drive the three-phase inverter with complementary outputs and dead time. For designs that emphasize motor-control peripherals over the GS digital-power ADC/DAC set, the pin-compatible DSPIC33EP32MC202-I/SS is the purpose-built variant. The extended temperature grade suits pump, fan, and traction-adjacent environments.
Recommended
Solar Micro-Inverters and DC-DC Converters
Grid-tied micro-inverters and photovoltaic DC-DC optimizers need simultaneous MPPT computation, grid-synchronized current shaping, and rapid protection shutdown - workloads that map naturally onto the DSPIC33EP32GS202-E/SS. The high-speed ADC tracks panel voltage/current plus the grid waveform, the 70 MIPS core runs the perturb-and-observe MPPT loop and the inverter current controller concurrently, and the flexible PWM modules synthesize the required switching patterns with cycle-by-cycle current limiting. Firmware-based control permits remote feature updates and grid-code revisions over product lifetime, a regulatory advantage. The 32KB Flash accommodates the full control stack including anti-islanding logic, and the -E extended temperature rating addresses rooftop enclosures that reach +105C to +125C internal ambient in summer.
Recommended
Battery Chargers and Wireless Power
Multi-chemistry battery chargers and wireless power (Qi-class) transmitters require precise current regulation, voltage taper control, and resonant frequency tracking - all firmware tasks well matched to the DSPIC33EP32GS202-E/SS. The high-speed ADC measures charge current, pack voltage, and board temperature each cycle, enabling accurate CC/CV profiles and JEITA-style thermal derating in software, while the integrated DAC provides programmable thresholds for fast comparator-based overcurrent trips. For wireless power, the DSP core runs frequency/phase tracking of the resonant tank from ADC samples, adjusting PWM operating point in real time. The extended -40C to +125C rating covers automotive bay charging environments, and the 32KB Flash holds charging state machines plus CAN or UART telemetry.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS202-I/SS | DSPIC33EP16GS202T-E/SS | DSPIC33EP32MC202-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP (5.30 mm width) | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Memory (Flash) | 32KB (32K x 8) | 32KB | 16KB | 32KB |
| Core / Family | dsPIC33E 16-bit, GS202 family | dsPIC33E 16-bit, GS202 family | dsPIC33E 16-bit, GS202 family | dsPIC33E 16-bit, MC202 family |
| Peripheral Emphasis | Digital Power (GS): high-speed ADC + DAC for SMPS | Digital Power (GS) - identical | Digital Power (GS) - identical | Motor Control (MC) peripheral set |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
Key Differentiators
- Extended temperature operation (vs DSPIC33EP32GS202-I/SS)
- Double the program memory (vs DSPIC33EP16GS202T-E/SS)
- Digital-power ADC/DAC peripheral emphasis (vs DSPIC33EP32MC202-I/SS)
- Trade-off: DSP-class price premium (vs DSPIC33EP16GS202T-E/SS)
Design Notes
Programming requires paired ICSP pins: the dsPIC33EP32GS202 provides multiple PGECx/PGEDx pairs, and per Microchip's tooling documentation you may use any pair, but ICSPCLK and ICSPDAT must come from the SAME numbered pair (e.g., PGEC2 with PGED2). Route your programming header to one chosen pair and do not mix. Connect all VDD and VSS pins. Budget Flash early: the compiler memory map should confirm your control loop plus comms fits within 32KB; if not, the pin-compatible 256KB MC502 family (different package) is the upgrade path, not a drop-in.
In digital power layouts, keep the high-speed ADC sampling references clean: separate the analog supply/ground for the ADC/DAC domain from the PWM gate-driver return path, and sample current sensors synchronously with PWM (center-aligned trigger) to avoid switching-noise aliasing. Route PGEC/PGED programming traces away from gate-drive loops. Place a local decoupling capacitor at each VDD pin, as close as possible to the SSOP package, with a solid ground plane on layer 2 of the PCB.
Estimated: the -E grade guarantees operation to +125C junction per Microchip's extended-temperature designation, but SSOP thermal resistance limits sustained power dissipation. For a 3.3V rail and typical DSC supply current, dissipation is modest (well under 0.5 W), so ambient derating rather than heatsinking is the usual concern - verify your enclosure ambient stays below the +125C ceiling minus estimated self-heating, and confirm exact supply current in DS70005208E Table of DC Characteristics before sign-off.
The 28-SSOP (0.209 inch / 5.30 mm body width, 0.65 mm lead pitch) footprint is shared across the entire GS202/MC202 family in /SS packages, so design the land pattern once and qualify both GS and MC variants plus -I and -E temperature grades. This enables dual-sourcing within Microchip without respin. Follow IPC-compliant SSOP land pattern dimensions and confirm MSL bake requirements before reflow.
Compliance Information
Compliance data was not present in the verified web data retrieved for this part. The -E suffix denotes extended temperature grade per Microchip convention, not a compliance certification. Verify RoHS/REACH status on the Microchip product page or datasheet before export-controlled builds.
