DSPIC33EP32GS202T-I/MX - 70 MIPS Digital Power DSC | Microchip
MPN: DSPIC33EP32GS202T-I/MX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.92 | $3.92 |
| 10 | $3.6 | $36.00 |
| 100 | $3.3 | $330.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.85 | $2,850.00 |
DSPIC33EP32GS202T-I/MX Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and control-oriented architecture of a microcontroller. Within the power management hierarchy, DSCs sit between general-purpose MCUs and dedicated digital power ASICs, offering programmable flexibility for multi-loop control schemes such as voltage-mode, current-mode, and multi-phase regulation used in modern power electronics.
Key features include high-speed PWM peripherals purpose-built for power conversion, an analog front end with comparators and programmable gain amplifier (PGA) inputs feeding a high-speed ADC, and Peripheral Pin Select (PPS) for flexible I/O remapping. The devices also carry Functional Safety (FuSa) support documentation, making them suitable for safety-relevant industrial power designs.
Architecturally, the dsPIC33EP core pairs a 16-bit MCU pipeline with DSP instructions (MAC, DSP multiply) that accelerate control-law computation such as PID and compensator routines executed at switching frequencies of hundreds of kilohertz. Deterministic interrupt latency ensures tight loop timing critical to loop stability in digital power supplies.
Typical applications include AC-DC power supplies, interleaved power factor correction (PFC), DC-DC converters, LED drivers, and solar micro-inverters. Microchip's Interleaved PFC reference design (universal input up to 350W) demonstrates the family directly.
Design consideration: ensure adequate decoupling on VDD/AVDD and keep the analog ground return path for the ADC/PGA separate from high-current PWM switching loops to preserve analog accuracy.
This page synthesizes distributor pricing, drop-in alternatives, datasheet sourcing, and practical digital power design notes not found on the manufacturer product page alone.
Drop-in alternatives for DSPIC33EP32GS202T-I/MX — 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/MX (same form factor and footprint) — differing in Core Processor, Operating Temperature, Package, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GS202-I/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16GS202-I/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202-E/MX
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.05 / Unit
View Datasheet →DSPIC33EP32GS202-I/MX
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33EP32GP502-I/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202T-I/MX Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33EP 16-bit DSC |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 32KB (32K x 8) FLASH |
| Supply Voltage | 3.3 V |
| Package | 28-UQFN (6x6 mm) exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T suffix) |
| Application Focus | SMPS and Digital Power Conversion |
| Peripheral Pin Select (PPS) | Yes, function remap with six virtual I/Os |
| Interrupts | External interrupts on all I/O pins |
| Debug / Trace | IEEE 1149.2 compatible JTAG boundary scan, trace and run-time watch |
| Programming | In-Circuit and In-Application Programming (ICSP/ICAP) |
| Breakpoints | Three program and one complex data breakpoint |
| I/O Features | 5V tolerant pins, selectable open-drain, pull-ups and pull-downs |
| Functional Safety | FuSa supported documentation package |
DSPIC33EP32GS202T-I/MX 28-uqfn (6x6 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP32GS202T-I/MX (28-uqfn (6x6 mm) exposed pad 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-I/MX.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS202T-I/MX is suitable for 6 applications: AC-DC Power Supplies, Interleaved Power Factor Correction, DC-DC Converters and Point-of-Load, LED Drivers for Industrial Lighting, Solar Micro-Inverters, Battery Chargers and Wireless Power.
AC-DC Power Supplies
The DSPIC33EP32GS202T-I/MX fits AC-DC converter control because its 70 MIPS 16-bit core executes voltage and current control loops deterministically at switching frequencies common in offline supplies, while the high-speed PWM offers the edge resolution needed for tight regulation across universal input ranges. On-chip comparators provide cycle-by-cycle overcurrent limiting without CPU intervention, and the fast ADC with PGA samples the feedback divider and current shunt with low latency for responsive transient behavior. Firmware flexibility allows single firmware platforms covering multiple power ratings, and the FuSa documentation supports safety-relevant industrial PSU projects.
Recommended
Interleaved Power Factor Correction
Interleaved PFC is a flagship application for the dsPIC33EP GS202 family: Microchip's own Interleaved PFC reference design uses a GS-series DSC to convert universal AC input to a high-voltage DC bus up to 350W. The DSPIC33EP32GS202T-I/MX manages phase-current balancing between interleaved boost legs using independent PWM channels and fast analog comparators, while the 70 MIPS core runs the outer voltage loop and inner current loops within each switching cycle. Cycle-by-cycle current limiting protects the boost MOSFETs during startup and line transients, and firmware-based control eliminates compensation drift inherent in analog PFC controllers.
Recommended
DC-DC Converters and Point-of-Load
In DC-DC and point-of-load converters, the DSPIC33EP32GS202T-I/MX replaces analog PWM controllers with a digital control loop that adapts compensation to changing output conditions. The GS202's high-resolution PWM provides fine duty-cycle granularity for tight output regulation at 300 kHz to 1 MHz switching, and the PGA-amplified ADC inputs read current-sense signals directly without external amplifier stages. Peak current-mode control is implemented via the on-chip comparators, achieving sub-microsecond protection response. Digital PID or 2P2Z compensators executed at 70 MIPS give designers telemetry, sequencing, and PMBus-style configurability that fixed-function controllers cannot offer.
Recommended
LED Drivers for Industrial Lighting
Programmable LED drivers benefit from the DSPIC33EP32GS202T-I/MX's combination of precise PWM dimming control and closed-loop current regulation. The high-speed PWM generates both the power-stage switching waveform and high-resolution dimming signals without flicker, while the fast ADC and comparators maintain constant-current operation across LED forward-voltage variation and temperature drift. At 70 MIPS, the controller implements soft-start, fault retry logic, and multi-string balancing in firmware, reducing BOM versus discrete driver ICs plus a supervisory MCU. The -40C to +85C industrial temperature range and 3.3V supply suit outdoor luminaires and industrial high-bay lighting environments.
Recommended
Solar Micro-Inverters
Solar micro-inverter control demands simultaneous MPPT, grid-synchronization, and protection algorithms - a workload matched to the DSPIC33EP32GS202T-I/MX. Its DSP multiply-accumulate instructions accelerate the MPPT search and grid PLL computations at 70 MIPS, while multiple high-speed PWM channels drive the DC-DC boost and DC-AC inverter stages with the resolution needed for low THD output. Fast comparators provide hardware-level overcurrent and anti-islanding protection responses independent of software timing. The 32KB FLASH accommodates grid-code tables for multiple regions, and in-application programming permits field firmware updates - a key serviceability feature for rooftop-installed electronics.
Recommended
Battery Chargers and Wireless Power
Multi-chemistry battery chargers and wireless power transmitters use the DSPIC33EP32GS202T-I/MX to implement charge-profile state machines, resonant converter control, and foreign-object detection in one controller. The GS202's high-speed PWM generates the resonant half-bridge drive with phase-shift or frequency control, the fast ADC tracks battery voltage/current/temperature per JEITA-style profiles in firmware, and comparators deliver immediate overcurrent cutoff. The 70 MIPS core manages QC/PD-style negotiation communication over existing pins in wired chargers, or Qi-style power transfer tuning in wireless transmitters. In-application programming enables charge-algorithm updates after deployment.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-I/MX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS202-I/MX | DSPIC33EP16GS202-I/MX | DSPIC33EP32GS202-E/MX | DSPIC33EP32GP502-I/MX |
|---|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm) | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33EP 16-bit, 70 MIPS | dsPIC33EP 16-bit, 70 MIPS | dsPIC33EP 16-bit, 70 MIPS | dsPIC33EP 16-bit, 70 MIPS | dsPIC33EP 16-bit, 70 MIPS |
| FLASH Program Memory | 32KB | 64KB | 16KB | 32KB | 32KB |
| Peripheral Set | SMPS-optimized PWM + PGA ADC + comparators | SMPS-optimized (same family) | SMPS-optimized (same family) | SMPS-optimized (same family) | General-purpose peripherals |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
Key Differentiators
- SMPS-optimized analog and PWM subsystem (vs DSPIC33EP32GP502-I/MX)
- Extended temperature option without redesign (vs DSPIC33EP32GS202-E/MX)
- Firmware headroom scaling (vs DSPIC33EP16GS202-I/MX)
Design Notes
For the 28-UQFN 6x6 package, the exposed pad on the bottom is the primary ground and thermal path - connect it to a solid ground plane via an array of at least 3x3 vias. Decouple each VDD and AVDD pin with 100 nF ceramics placed within 2 mm of the pin, plus 4.7-10 uF bulk capacitance. Keep the ADC/PGA analog routing (feedback dividers, current shunt) away from PWM switching nodes to preserve analog accuracy in digital power loops.
Peripheral Pin Select (PPS) lets you remap PWM, UART, and other digital functions across RP pins, so optimize placement so high-frequency PWM outputs land closest to their gate drivers and current-limit comparator inputs sit nearest the shunt. Route MCLR, PGD, and PGC to an in-circuit programming header (5-pin) even in production boards - ICSP debugging with MPLAB ICD/REAL ICE dramatically shortens control-loop bring-up.
Do not exceed the 3.3V supply specification on VDD; while I/O pins are 5V tolerant for digital inputs, analog inputs feeding the PGA/ADC are not 5V tolerant - attenuate feedback signals appropriately. Verify FLASH margin: 32KB is adequate for single-loop SMPS firmware but complex multi-loop or multi-region grid-code designs may need the DSPIC33EP64GS202. Always confirm pin assignments against the current DS70005208E datasheet revision before PCB sign-off, as PPS defaults differ from fixed-pin peripherals.
Compliance Information
RoHS/lead-free status per Microchip standard commercial offering; confirm exact ordering-code compliance via Microchip product page and Material Declaration Data Sheet. Note: an Octopart comparison mentions AEC-Q100 listing on some GS-series variants - verify per ordering code.
