DSPIC33EP32GS202T-E/SO - 16-bit DSC 32KB Flash 70MIPS | Microchip
MPN: DSPIC33EP32GS202T-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.35 | $4.35 |
| 10 | $3.95 | $39.50 |
| 100 | $3.55 | $355.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.9 | $2,900.00 |
DSPIC33EP32GS202T-E/SO Overview
A digital signal controller combines a microcontroller with DSP-grade computational blocks in a single chip. Within the power management hierarchy, the DSC sits above simple MCUs: it executes control-loop algorithms (PID, proportional-integral, nonlinear transforms) at the sample rates demanded by switch-mode power conversion. The dsPIC33EP GS series from Microchip is purpose-built for exactly this class of work, integrating high-speed ADCs and PWM peripherals tightly coupled to the CPU core.
Key features of the DSPIC33EP32GS202 include flash-programmable 16-bit core with DSP instruction extensions, high-speed analog-to-digital converters for current- and voltage-sense loops, and dedicated high-resolution PWM peripherals suited to AC/DC, DC/DC and PFC topologies. The E-temperature suffix specifies operation from -40C to +125C, and the device is AEC-Q100 automotive qualified with Functional Safety (FuSa) support per DigiKey listing, enabling deployment in automotive and industrially harsh environments.
Architecturally, the device belongs to the dsPIC33EP family documented in the dsPIC33EPXXGS202 Family Data Sheet (DS70005208E). The GS-series integration of fast ADCs, comparators and PWM with the 16-bit CPU allows single-chip closed-loop control without external analog sequencing logic, reducing BOM count and control-loop latency.
Typical applications include interleaved power factor correction (Microchip publishes a 350W Interleaved PFC reference design based on this SMPS dsPIC family), digital switch-mode power supplies, automotive DC-DC converters, and motor control requiring precise timing.
Design consideration: operate within the 3.3V supply domain and budget the power-conversion loop timing around the ADC sampling and PWM update structure described in the family data sheet.
This page synthesizes distributor listings, drop-in alternatives, and design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202T-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 DSPIC33EP32GS202T-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Packaging, Product Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP502T-E/SO
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View Datasheet →DSPIC33EP32GS202-E/SO
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View Datasheet →DSPIC33EP32GS202T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.6 / Unit
View Datasheet →DSPIC33EP32GS202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP32GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP32GS202T-E/SO Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33EP (16-bit DSC) |
| Core Size | 16-bit |
| Flash Memory | 32KB (32K x 8) |
| Supply Voltage | 3.3 V |
| Execution Speed | 70 MIPS (Mouser); DigiKey lists 60 MIPs - see validation note |
| Package | 28-SOIC (0.3 in, 7.5 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E suffix) |
| Qualification | AEC-Q100 automotive qualified |
| Functional Safety | FuSa supported (per DigiKey listing) |
| Series | dsPIC 33EP, Automotive |
| Product Status | Active |
| Packaging | Tape & Reel (TR) |
| Application Focus | Digital power (SMPS, PFC, DC-DC) |
| Peripherals | High-speed ADC, PWM for digital power |
DSPIC33EP32GS202T-E/SO 28-soic (0.3 in, 7.5 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP32GS202T-E/SO (28-soic (0.3 in, 7.5 mm) 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 DSPIC33EP32GS202T-E/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS202T-E/SO is suitable for 6 applications: Interleaved Power Factor Correction, Digital Switch-Mode Power Supplies, Automotive DC-DC Converters, Motor Control, Lighting and LED Drivers, Battery Chargers and BMS Front-End Control.
Interleaved Power Factor Correction
The DSPIC33EP32GS202T-E/SO is purpose-built for PFC control: Microchip publishes an Interleaved PFC reference design based on the SMPS dsPIC family that accepts universal AC input and produces a single high-voltage DC output up to 350W. The controller's high-speed ADC samples inductor current and bus voltage each switching cycle, while dedicated PWM generators shape the current loop with sub-microsecond resolution. Interleaving two phases reduces input ripple current and eases EMI filter design. Placing control, ADC and PWM in one chip removes external analog loop components and allows firmware-based compensation tuning across universal input ranges without hardware changes.
Recommended
Digital Switch-Mode Power Supplies
For SMPS topologies (buck, boost, LLC, flyback), the DSPIC33EP32GS202T-E/SO closes the feedback loop digitally: the high-speed ADC converts output voltage and current sense signals, and the power-PWM block adjusts duty cycle with high resolution, enabling peak-current-mode or voltage-mode control in firmware. Digital control allows adaptive compensation over load and line, soft-start sequencing, and fault logging that analog controllers cannot offer. At 3.3V supply and up to 70 MIPS, the core sustains kHz-range switching loops with margin for housekeeping tasks. The 28-SOIC package suits compact offline and on-board power supplies where board area matters.
Recommended
Automotive DC-DC Converters
AEC-Q100 qualification, Functional Safety (FuSa) support, and the -40C to +125C E-temperature range make the DSPIC33EP32GS202T-E/SO suitable for automotive power conversion: onboard chargers, 12V/48V DC-DC modules, and auxiliary supplies. The 32KB flash holds control firmware plus diagnostic and safety routines; the DSC core executes fast current loops demanded by automotive converters. Using a single qualified controller across automotive power functions reduces the number of distinct components to qualify and trace. Designers should follow Microchip's safety documentation and validate PWM fault behavior against their functional-safety goals during system integration.
Recommended
Motor Control
The GS-series controller handles BLDC, PMSM, and ACIM control loops: high-speed ADC channels read phase currents and bus voltage, while complementary PWM outputs drive three-phase inverter bridges with programmable dead time. The 16-bit DSP core at up to 70 MIPS executes field-oriented control (FOC) mathematics within PWM update periods, and the -40C to +125C range covers automotive fans, pumps, and industrial drives. Firmware flexibility permits sensorless observers and startup algorithms that fixed-function motor controllers cannot implement. On a single 28-SOIC chip, control, protection and communication coexist, reducing component count versus discrete MCU-plus-driver analog designs.
Recommended
Lighting and LED Drivers
Digital LED drivers use the DSPIC33EP32GS202T-E/SO to regulate LED current with dimming resolution beyond analog controllers: the high-resolution PWM supports wide dimming ranges without visible flicker, and ADC feedback compensates for LED forward-voltage drift with temperature. Constant-current loops for street lighting, industrial luminaires, and automotive headlamps benefit from the -40C to +125C range and AEC-Q100 qualification for automotive lighting. Firmware-based control also enables protocol handling (DALI-style interfaces via UART peripherals) on the same chip. The 28-SOIC package fits ballast-form-factor boards while the 32KB flash holds both control loop and communication stack.
Recommended
Battery Chargers and BMS Front-End Control
Charger control requires precise CC/CV profiling, temperature supervision, and charge-state sequencing - tasks the DSPIC33EP32GS202T-E/SO performs with its ADC channels monitoring current, voltage and temperature, and PWM controlling the converter stage. The 16-bit core implements charge algorithms including multi-stage lithium charging and lead-acid taper profiles, while the -40C to +125C temperature grade and AEC-Q100 qualification support automotive and industrial charger environments. Firmware updates via self-programmable flash allow charging profiles to be revised in the field. The 3.3V controller domain interfaces cleanly with isolated feedback using standard optocoupler or digital-isolator circuits on the secondary side.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP502T-E/SO | DSPIC33EP32GS202-E/SO | DSPIC33EP32GS202T-I/SO | DSPIC33EP32GP502-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (0.3 in) | 28-SOIC (0.3 in) - same | 28-SOIC (0.3 in) - same | 28-SOIC (0.3 in) - same | 28-SOIC (0.3 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32KB (32K x 8) | 32KB | 32KB | 32KB | 32KB |
| Core / Architecture | dsPIC33EP 16-bit DSC | dsPIC33EP 16-bit DSC | dsPIC33EP 16-bit DSC | dsPIC33EP 16-bit DSC | dsPIC33EP 16-bit DSC |
| Peripheral Emphasis | Digital power (high-speed ADC, power PWM) | General-purpose | Digital power - same | Digital power - same | General-purpose |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Digital-power-optimized peripheral set (vs DSPIC33EP32GP502T-E/SO)
- Extended automotive temperature range (vs DSPIC33EP32GS202T-I/SO)
- AEC-Q100 with Functional Safety support (vs DSPIC30F1010-20E/SO (octopart comparison))
Design Notes
Supply the controller from a clean 3.3V rail separate from noisy power-stage rails. In SMPS/PFC designs the switch node injects significant dv/dt noise into the controller supply; use ferrite filtering and local 0.1uF decoupling at each VDD pin plus bulk capacitance near the board entry. Verify the exact MIPS/supply-frequency relationship in the dsPIC33EPXXGS202 Family Data Sheet (DS70005208E) before fixing the oscillator configuration, since maximum core speed depends on valid operating conditions.
Confirm the temperature grade before BOM substitution: the E suffix (-40C to +125C) and I suffix (-40C to +85C) variants are easy to confuse because they share the same base MPN and package. Using an I-grade part in an automotive 125C environment will cause out-of-spec operation even though the schematic is otherwise identical. Also note the MIPS listing discrepancy between distributors (70 MIPS at Mouser vs 60 MIPs at DigiKey) - validate against the family data sheet for your supply/temperature corner.
Keep analog sense routing (ADC inputs for current and voltage feedback) short and away from PWM switching lines to preserve loop accuracy in digital power applications. Ground the controller analog reference with a Kelvin connection to the sense-point ground, not the power ground plane. The 28-SOIC 0.3-inch footprint allows SOIC adapter prototyping; for automated assembly, the T (tape-and-reel) variant supports pick-and-place feeders directly.
The E-temperature part at +125C requires derating of maximum operating frequency per Microchip electrical specifications; consult the family data sheet's electrical characteristics tables rather than assuming room-temperature limits apply. When interleaved PFC or multi-phase designs use firmware-based phase balancing, budget CPU cycles so the control ISR completes before the next PWM update, otherwise loop jitter degrades current sharing between phases.
Compliance Information
AEC-Q100 automotive qualification and Functional Safety (FuSa) support confirmed via DigiKey and datasheets.com listings. RoHS/REACH/lead-free status not stated in provided data.
