DSPIC33EP32GS202T-I/SS - 70MIPS 16-bit DSC 32KB Flash | Microchip
MPN: DSPIC33EP32GS202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.55 | $4.55 |
| 10 | $4.2 | $42.00 |
| 100 | $3.95 | $395.00 |
| 500 | $3.8 | $1,900.00 |
| 1,000 | $3.68 | $3,680.00 |
DSPIC33EP32GS202T-I/SS Overview
A digital signal controller combines the computational throughput of a DSP core with the deterministic behavior and peripheral set of a microcontroller. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated power-supply IC: it runs closed-loop control firmware for switch-mode converters while integrating the analog and timing peripherals that dedicated controllers would normally require as external chips.
The GS202 variant of the dsPIC33EP family differentiates itself with a dual high-speed 12-bit ADC architecture supporting on-chip analog programmable gain amplifiers (PGA), multiple high-speed analog comparators, and a dedicated high-resolution PWM module designed for switching power stages. These peripherals enable cycle-accurate control of converters switching at hundreds of kilohertz, with the ADC triggered directly from the PWM engine for minimal control-loop latency.
The dsPIC33EP core operates from a 3.0V to 3.6V supply and reaches its full 70 MIPS rate from a single-cycle DSP multiply-accumulate engine, hardware division support, and zero-overhead looping, all of which are essential for executing Proportional-Integral-Derivative (PID) and predictive control algorithms inside tight switching periods.
Typical applications include AC-DC power factor correction (PFC) stages, DC-DC converters, digital lighting ballasts, battery chargers, and uninterruptible power supplies. Microchip's Interleaved PFC reference design based on this family operates from universal AC input and produces up to 350W of regulated DC output.
Designers should budget for the 3.3V-only supply range and reserve the VCAP pin decoupling per datasheet guidance; firmware portability across the dsPIC33EP family allows reuse of control code when moving between package or memory variants.
This page synthesizes distributor pricing from 8+ sources, drop-in alternatives within the same 28-SSOP footprint, pinout data, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP32GS202T-I/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 DSPIC33EP32GS202T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Application Focus, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS202T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.58 / 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 →DSPIC33EP32MC202T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Max CPU Speed | 70 MIPS |
| Flash Memory | 32KB (32K x 8) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Package | 28-SSOP (5.30 mm width) |
| Mounting Type | Surface Mount |
| Application Focus | Digital power (SMPS) applications |
| Safety Classification | Functional Safety (FuSa) capable |
| Key Peripherals | High-speed PWM, 12-bit ADC with PGA, comparators |
| Product Family | dsPIC33EP (GS series for digital power) |
| DSP Features | Single-cycle MAC, zero-overhead looping |
| Packaging (T suffix) | Tape and Reel |
| Program Memory Type | Flash |
| Reference Design Power | 350 W Interleaved PFC (family reference design) |
DSPIC33EP32GS202T-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/CN0/RB0 — Analog input 0 / positive ADC reference / port B0 |
| Pin 3 | AN1/VREF-/CN1/RB1 — Analog input 1 / negative ADC reference / port B1 |
| Pin 4 | AN2/SS1/CN2/RB2 — Analog input 2 / SPI slave select 1 / port B2 |
| Pin 5 | AN3/CN3/RB3 — Analog input 3 / port B3 |
| Pin 6 | AN4/CN4/RB4 — Analog input 4 / port B4 |
| Pin 7 | VDD — Power supply (3.0V to 3.6V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | AN5/CN5/RB5 — Analog input 5 / port B5 |
| Pin 10 | AN6/CN6/RB6 — Analog input 6 / port B6 |
| Pin 11 | AN7/CN7/RB7 — Analog input 7 / port B7 |
| Pin 12 | AN8/CN8/RB8 — Analog input 8 / port B8 |
| Pin 13 | AN9/CN9/RB9 — Analog input 9 / port B9 |
| Pin 14 | AN10/TCK/CN10/RB10 — Analog input 10 / JTAG test clock / port B10 |
| Pin 15 | AN11/TMS/CN11/RB11 — Analog input 11 / JTAG test mode select / port B11 |
| Pin 16 | AN12/CN12/RB12 — Analog input 12 / port B12 |
| Pin 17 | AN13/CN13/RB13 — Analog input 13 / port B13 |
| Pin 18 | AN14/CN14/RB14 — Analog input 14 / port B14 |
| Pin 19 | AN15/CN15/RB15 — Analog input 15 / port B15 |
| Pin 20 | VDD — Power supply (3.0V to 3.6V) |
| Pin 21 | VSS — Ground reference |
| Pin 22 | OSC1/CLKI/RC12 — Oscillator crystal input / external clock input / port C12 |
| Pin 23 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output / port C15 |
| Pin 24 | SOSCI/RP4x/RC13 — Secondary oscillator input / remappable peripheral pin / port C13 |
| Pin 25 | SOSCO/T1CK/RP4x/RC14 — Secondary oscillator output / Timer1 clock / remappable peripheral pin / port C14 |
| Pin 26 | VDD — Power supply (3.0V to 3.6V) |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VCAP/VDDCORE — Internal core regulator output - connect external stabilizing capacitor per datasheet |
Typical Applications
DSPIC33EP32GS202T-I/SS is suitable for 6 applications: Power Factor Correction (PFC), DC-DC Converters (SMPS), Digital Lighting and LED Drivers, Battery Chargers, Uninterruptible Power Supplies (UPS), Embedded Industrial Control.
Power Factor Correction (PFC)
The DSPIC33EP32GS202T-I/SS is purpose-built for PFC control: its high-resolution PWM generates phase-shifted drive signals while the 12-bit ADC with PGA samples inductor current and bus voltage with minimal latency, closing the current loop at 70 MIPS. Microchip's own Interleaved PFC reference design based on this family operates from universal AC input and produces up to 350W of regulated high-voltage DC. Placing the controller between the bridge rectifier and boost stage, firmware implements average-current-mode control with cycle-by-cycle overcurrent protection via the analog comparators. The dual ADC paths allow simultaneous sampling of two phase currents in interleaved topologies without external sample-and-hold circuitry, reducing BOM cost and improving phase-current balance.
Recommended
DC-DC Converters (SMPS)
For buck, boost, and synchronous rectification stages, the GS202's high-speed PWM module supports duty-cycle updates every PWM cycle, and the fast 12-bit ADC can be triggered directly from the PWM engine so the sampled current corresponds to a known switching instant - critical for peak and average current-mode control. The 70 MIPS core executes a PID or predictive compensation loop in a few microseconds, supporting switching frequencies in the hundreds of kilohertz. On-chip comparators implement hardware overcurrent shutdown with no software in the fault path, meeting typical response-time expectations for power-stage protection. Firmware-defined control laws also allow soft-start, phase shedding, and mode switching (CCM/DCM) without changing analog compensation networks.
Recommended
Digital Lighting and LED Drivers
LED drivers demand precise constant-current regulation with fast fault response, which maps directly onto the GS202 peripheral set: high-resolution PWM sets the dimming resolution, the PGA-equipped ADC senses shunt current with programmable gain (avoiding external amplifier ICs), and comparators provide cycle-level short-circuit protection. At 70 MIPS, the controller can run multi-channel dimming plus communication (DMX or DALI-style protocols over remappable UART pins) concurrently. The 3.0V to 3.6V single-supply operation with internal core regulator simplifies the auxiliary supply in luminaires. Firmware-based control also enables temperature-derating curves using the same ADC channels, extending LED lifetime relative to fixed analog driver ICs.
Recommended
Battery Chargers
Multi-chemistry battery charging (CC/CV/Li-ion termination, lead-acid stage control) is naturally firmware-defined, and the GS202 implements the full state machine plus the switching-regulator control loop in one chip. The 12-bit ADC monitors battery voltage, current, and pack temperature through PGA channels, while the high-resolution PWM drives the buck power stage with efficiency-optimized frequency. The 70 MIPS budget leaves headroom for coulomb counting and safety supervision algorithms alongside the control loop. Because charge profiles change per chemistry, a single hardware design covering multiple products can be achieved by firmware variant only - a key manufacturing advantage the 32KB Flash accommodates including bootloader and diagnostics.
Recommended
Uninterruptible Power Supplies (UPS)
Line-interactive and double-conversion UPS designs require synchronized inverter control, AC-line zero-cross detection, and battery management simultaneously - a workload the GS202's DSP engine handles at 70 MIPS. The dual fast ADC paths sample AC line voltage and inverter output current concurrently for the inverter control loop, while remappable peripheral pins service the transfer-relay drive and communication interface. The analog comparators protect the inverter power stage within one switching cycle. The 28-SSOP package footprint keeps controller area small on dense power boards, and the Functional Safety (FuSa) designation of the family supports reliability documentation required in critical power infrastructure projects.
Recommended
Embedded Industrial Control
Beyond power conversion, the 70 MIPS dsPIC33EP core with DSP MAC instructions suits industrial applications combining sensing and actuation: motor-adjacent supervision, digital filtering of sensor streams, and fast closed-loop regulation. The remappable pin architecture lets designers place UART, SPI, I2C, and compare/PWM functions on the most convenient of the 28 pins, easing layout around existing connector positions. The 3.3V I/O interfaces directly with common industrial transceiver ICs, and the industrial -I temperature grade covers standard factory-floor environments. With 32KB Flash, protocol stacks plus control firmware fit without external memory, keeping the BOM to a single controller in cost-sensitive industrial nodes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS202T-I/SS | DSPIC33EP16GS202T-E/SS | DSPIC33EP16GS202-I/SS | DSPIC33EP32MC202T-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP (5.30 mm) | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS |
| Flash Memory | 32KB (32K x 8) | 16KB | 16KB | 16KB | 32KB |
| Digital Power Peripherals | Dual high-speed 12-bit ADC with PGA, comparators, high-speed PWM | Same GS digital-power peripheral set | Same GS digital-power peripheral set | Same GS digital-power peripheral set | Motor-control ADC architecture (no GS dual high-speed ADC/PGA) |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Temperature Grade | Industrial (I suffix) | Industrial (I) | Extended (E) - wider range | Industrial (I) | Industrial (I) |
| Packaging Delivery | Tape & Reel (T suffix) | Tape & Reel | Tape & Reel | Tube / cut tape | Tape & Reel |
Key Differentiators
- Double the program memory in the same footprint (vs DSPIC33EP16GS202T-I/SS)
- GS-series dual high-speed ADC with PGA (vs DSPIC33EP32MC202T-I/SS)
- Extended-temperature option within the family (vs DSPIC33EP16GS202T-E/SS)
Design Notes
The GS202 requires a stabilizing capacitor on the VCAP/VDDCORE pin (pin 28) because the on-chip low-dropout regulator generates the 1.8V-class core supply from the 3.3V input. Follow the exact capacitance and ESR guidance in the Microchip datasheet - a low-ESR ceramic of the specified value placed as close to pin 28 as possible is required; omitting or undersizing it causes erratic operation or failure to start. Budget 3.0V-3.6V on VDD; this part is not 5V tolerant on its supply rails, so level-shift any 5V logic interfaces.
For digital-power layouts, keep the controller's analog ground reference away from the power-stage switching loop. Route the PGA/ADC sense lines differentially and as short as possible from shunt resistors to ANx pins, and place a local RC anti-alias filter per the datasheet's ADC input impedance guidance. The PWM outputs should leave the chip on the opposite board edge from the analog sense traces to prevent switching-edge coupling into current measurements. Solid ground plane with the VSS pins (8, 21, 27) stitched directly to it minimizes reference bounce during simultaneous PWM transitions.
The T suffix is a packaging indicator only - the DSPIC33EP32GS202T-I/SS and the tube-form DSPIC33EP32GS202-I/SS are the same silicon, so do not requalify when switching. When substituting the 16KB DSPIC33EP16GS202 variants, verify compiled code size including the bootloader fits 16KB with margin, since the GS202 control firmware plus communication stacks can approach that limit. Also note the -I industrial grade differs from -E extended temperature; using the wrong grade in a thermally aggressive power supply enclosure risks out-of-spec operation even though the parts are otherwise pin-identical.
Compliance Information
Verified web data does not state RoHS/REACH/lead-free status for this MPN. Microchip's product page is the authoritative source for environmental compliance declarations.
