DSPIC33EP32GS202-I/MM - 16-bit DSC, 32KB Flash, 70 MIPS | Microchip
MPN: DSPIC33EP32GS202-I/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.7 | $370.00 |
| 500 | $3.33 | $1,665.00 |
| 1,000 | $2.98 | $2,980.00 |
DSPIC33EP32GS202-I/MM Overview
A digital signal controller combines the computational capability of a digital signal processor with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy of an embedded system, the DSC sits above a plain MCU: it executes control-loop algorithms such as proportional-integral (PI) compensation, phase management, and fault handling in real time, which is essential in digital power conversion where loop bandwidths reach tens of kilohertz.
Key features include the 70 MIPS 16-bit dsPIC33E core executing DSP instructions (MAC, multiply-divide), 32KB self-programmable flash, a high-speed PWM module for power-converter topologies, and analog integration targeted at digital power. The -I suffix indicates the industrial temperature grade of -40C to +85C, and the 3.3V operating supply matches modern digital and mixed-signal rails.
Architecturally, the dsPIC33EP32GS202 belongs to the GS series optimized for digital power: Microchip states the family provides 16-bit microcontrollers and digital signal controllers with high-speed PWM and advanced analog for SMPS. The DSP engine and flexible clocking allow deterministic interrupt latency, which matters for time-critical current-mode control loops.
Typical applications include AC-DC and DC-DC converter control, power factor correction (PFC), and embedded power supplies. Microchip's 750W AC-DC reference design demonstrates a semi-bridgeless PFC topology followed by a peak-current-controlled zero-voltage-switching full-bridge converter using this family.
When designing, budget the 32KB flash carefully: digital power firmware with compensation tables and state machines can grow quickly, so verify code size before finalizing the BOM.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202-I/MM — 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-I/MM (same form factor and footprint) — differing in Package, Operating Temperature, Operating Voltage, RoHS Status, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS202-I/M6
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →DSPIC33EP16GS202-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202-I/M6
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.18 / Unit
View Datasheet →DSPIC33EP32GS202-I/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Maximum CPU Speed | 70 MIPS |
| Program Memory (Flash) | 32 KB |
| Operating Voltage | 3.3 V (VDD) |
| Package | 28-QFN-S (6x6 mm), exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, -I grade) |
| Product Family | dsPIC33EP32GS202 (digital power / SMPS) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| RoHS Status | Compliant (ROHS, per JLCPCB listing) |
| Typical Application | Digital power, SMPS, PFC |
| Lifecycle Status | In Production (per Microchip product page) |
DSPIC33EP32GS202-I/MM 28-qfn-s (6x6 mm), exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP32GS202-I/MM (28-qfn-s (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 DSPIC33EP32GS202-I/MM.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS202-I/MM is suitable for 6 applications: Digital SMPS Control, Power Factor Correction (PFC), Embedded AC-DC Power Supplies, DC-DC Converters and Point-of-Load Regulation, Industrial Automation Power Stages, Digital Lighting and LED Driver Control.
Digital SMPS Control
The DSPIC33EP32GS202-I/MM is purpose-built for switched-mode power supply control: its 70 MIPS 16-bit core closes voltage- and current-mode loops with deterministic latency, while the high-speed PWM module generates gate drive timing for buck, boost, flyback, and full-bridge topologies. The fast ADC samples inductor current and output voltage within each switching cycle, enabling peak or average current-mode control implemented in firmware. Compared with an analog controller, the DSC offers programmable compensation, adaptive dead-time, soft-start profiling, and digital fault logging without hardware changes. Designers should reserve flash headroom in the 32KB memory for protection state machines and communication, and place PWM/ADC routing away from gate-drive noise on the 3.3V rail.
Recommended
Power Factor Correction (PFC)
In active PFC stages the DSPIC33EP32GS202-I/MM executes the average-current control loop and input-voltage feedforward needed to keep power factor high across line conditions. Microchip's 750W AC-DC reference design demonstrates exactly this usage: a semi-bridgeless PFC topology controlled by the GS-series family, followed by a ZVS full-bridge main converter. The 70 MIPS DSP engine with single-cycle MAC instructions computes the sinusoidal current reference each switching cycle, while the high-speed ADC captures instantaneous line current for harmonic shaping. Firmware-based control also allows inrush management, brownout handling, and burst-mode operation at light load to meet efficiency regulations - all in software on the same silicon, reducing BOM changes between 115V and 230V product variants.
Recommended
Embedded AC-DC Power Supplies
Server, telecom, and industrial embedded power supplies benefit from the DSPIC33EP32GS202-I/MM because digital control replaces multiple analog ICs with one programmable device. The controller sequences multiple rails, adjusts switching frequency, implements zero-voltage-switching timing for the full-bridge stage, and reports telemetry over a serial link to a host BMC or PLC. The -I industrial temperature rating of -40C to +85C covers fanless and high-ambient environments, and the exposed-pad QFN-28 6x6 mm package provides low thermal resistance and short analog traces on dense power boards. With 70 MIPS available, housekeeping tasks such as PMBus-style communication and protection supervision run alongside the real-time control loop on a single 3.3V-supplied DSC.
Recommended
DC-DC Converters and Point-of-Load Regulation
For intermediate-bus and point-of-load converters, the DSPIC33EP32GS202-I/MM provides the fast control bandwidth that polyphase and multiphase designs require. Its high-speed PWM supports phase shifting and complementary outputs with programmable dead time, enabling synchronous buck and boost stages at hundreds of kilohertz. The on-chip ADC plus comparators implement cycle-by-cycle overcurrent limiting in hardware-assisted fashion, protecting power stages within a switching period rather than waiting for a software flag. Designers appreciate that firmware-based compensators can be retuned at runtime for different output voltages, letting one hardware platform serve 12V, 5V, and 3.3V product variants. The QFN-28 6x6 mm footprint keeps the controller physically adjacent to the power stage for short sensing loops.
Recommended
Industrial Automation Power Stages
Industrial equipment that switches solenoids, heaters, LED drivers, or small motors uses the DSPIC33EP32GS202-I/MM to combine power conversion with control logic on one chip. The 70 MIPS core handles state machines and fieldbus communication while the digital-power PWM drives the power stage with precise timing; the -40C to +85C industrial grade suits factory floors and outdoor cabinets. Because control parameters live in flash, the same PCB can be re-characterized in firmware for different loads, cutting SKU proliferation. Diagnostic features - ADC monitoring of voltages, currents, and temperature - support predictive maintenance reporting to a PLC. The exposed-pad QFN-28 package also withstands the vibration and thermal cycling typical of industrial environments better than fine-pitch plastic packages of comparable pin count.
Recommended
Digital Lighting and LED Driver Control
High-power LED drivers use the DSPIC33EP32GS202-I/MM to regulate LED current with dimming resolution and flicker-free behavior that analog controllers struggle to match. The high-speed PWM produces precise constant-current pulses and PWM dimming waveforms, while the ADC tracks output current and heatsink temperature for closed-loop thermal derating. Running at 70 MIPS, the controller can implement adaptive strategies - such as load-step handling in automotive or stage-lighting applications - and report diagnostics digitally. The 3.0-3.6V supply integrates cleanly with auxiliary bias rails derived from the converter itself, and the 28-pin QFN-S 6x6 mm exposed-pad package minimizes board area in compact driver modules. Firmware updates in the 32KB flash allow field retuning of color-mixing and dimming curves.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202-I/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS202-I/M6 | DSPIC33EP16GS202-I/MM | DSPIC33EP32GS202-I/M6 |
|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm), exposed pad | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Speed | 16-bit dsPIC33EP, 70 MIPS | 16-bit dsPIC33EP, 70 MIPS | 16-bit dsPIC33EP, 70 MIPS | 16-bit dsPIC33EP, 70 MIPS |
| Flash Memory | 32 KB | 16 KB | 16 KB | 32 KB |
| Digital Power Peripherals | High-speed PWM, high-speed ADC, DAC | Same GS-series digital power set | Same GS-series digital power set | Identical |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Pin-to-Pin Compatibility | Reference (28-QFN-S 6x6 mm) | Pin-to-pin compatible | Pin-to-pin compatible | Pin-to-pin compatible |
| RoHS | Compliant | Compliant | Compliant | Compliant |
| Lifecycle Status | In Production | In Production | In Production | In Production |
Key Differentiators
- Double the program memory within the same footprint (vs DSPIC33EP16GS202-I/M6)
- Digital-power-optimized analog integration (vs DSPIC33EP32GP502T-E/SO)
- Industrial temperature grade in a thermally efficient package (vs DSPIC33EP16GS202-I/MM)
Design Notes
Budget flash carefully: the DSPIC33EP32GS202-I/MM provides 32KB, which is generous for a single control loop but tight when adding communication stacks, bootloader, and compensation tables. Compile early with the free XC16 compiler and confirm code size before locking the BOM; if the project grows past roughly 24KB, migrate up the dsPIC33EP family rather than stripping protection firmware.
Place the exposed pad connection as a solid ground pour with multiple vias to the ground plane - this is both the thermal path and the primary return for the ADC and PWM. Keep analog sensing traces (current shunt, output voltage divider) short, guarded by ground, and route them away from gate-drive nodes. Decouple VDD with 0.1uF ceramic directly at the pin plus 4.7-10uF bulk per standard Microchip layout guidance.
Estimated: the 3.3V supply to this DSC draws on the order of tens of milliamps at 70 MIPS (core current scales with MIPs). Size the auxiliary bias regulator with margin and filter it separately from gate-driver supplies, because PWM switching transients coupling into VDD show up as jitter in the high-speed PWM timing - which directly degrades converter regulation and efficiency.
Use cycle-by-cycle current-limit comparators in hardware for overcurrent protection instead of relying on software-only ADC checks; the analog comparators react within one switching period while software response depends on interrupt latency. Configure ADC sampling to align with PWM trigger outputs so measurements are taken at consistent points in the switching cycle, minimizing ripple-induced measurement noise in the control loop.
Compliance Information
RoHS compliance stated by JLCPCB part listing. REACH, halogen-free, and conflict-minerals declarations not present in verified data - request from Microchip.
