DSPIC33EP32GS202-E/MX - 16-Bit DSC 32KB Flash Digital Power | Microchip
MPN: DSPIC33EP32GS202-E/MX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.05 | $4.05 |
| 10 | $3.85 | $38.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.3 | $1,650.00 |
| 1,000 | $3.05 | $3,050.00 |
DSPIC33EP32GS202-E/MX Overview
A digital signal controller combines the computational throughput of a DSP with the deterministic control peripherals and interrupt architecture of a microcontroller. In the power-management hierarchy, a DSC sits above general-purpose MCUs and below standalone DSPs, closing high-bandwidth control loops for switch-mode power supplies, power factor correction stages and motor drives directly in firmware.
Key features include the Interconnected High-Speed PWM module with dedicated time bases, dead-time control and fault inputs; a high-speed 12-bit ADC capable of sampling multiple channels per PWM cycle with an integrated PGA for small-signal current sensing; on-chip comparators and a DAC enabling autonomous analog feedback; and Peripheral Pin Select (PPS) for flexible I/O remapping with six virtual ports.
Architecture highlights: the dsPIC33EP core provides separate program and data buses (Harvard architecture), DSP multiply-accumulate instructions, three program breakpoints, and IEEE 1149.2 (JTAG) boundary scan. The device supports In-Circuit and In-Application Programming (ICSP/IAP) and is positioned for Functional Safety (FuSa) development per DigiKey classification.
Typical applications include switch-mode power supplies (SMPS), interleaved power factor correction (Microchip's 350W interleaved PFC reference design targets this family), digital lighting ballasts and DC-DC converters.
Design consideration: the MX (UQFN) footprint differs from the MM (QFN-S) variant; verify pad geometry before layout reuse, and use any matched PGECx/PGEDx pair for programming.
This page synthesizes distributor pricing, drop-in family alternatives and practical design notes beyond the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202-E/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 DSPIC33EP32GS202-E/MX (same form factor and footprint) — differing in Package, Operating Temperature, Program Memory (Flash), Core, Operating Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GS202-E/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16GS202-E/MX
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33EP32GS202-I/MM
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33EP32MC202-E/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GS202-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GS202-E/MX Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Performance | 60 MIPS (DigiKey listing); core capable of up to 70 MIPS (Mouser listing) |
| Operating Voltage | 3 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 28-UQFN (6x6 mm) |
| Mounting Type | Surface Mount |
| Peripherals | High-Speed PWM, 12-bit ADC with PGA, Comparators, DAC |
| Target Application Class | Digital Power SMPS |
| Functional Safety Positioning | FuSa-classified part (per DigiKey) |
| Debug Interface | IEEE 1149.2 compatible (JTAG) boundary scan |
| I/O Flexibility | Peripheral Pin Select (PPS), six virtual I/O ports |
| Programming | In-Circuit and In-Application Programming (ICSP/IAP) |
| Debug Breakpoints | Three program and one complex data breakpoint |
| External Interrupts | On all I/O pins, 5V-tolerant pins with selectable open-drain and pull-ups |
DSPIC33EP32GS202-E/MX 28-uqfn (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP32GS202-E/MX (28-uqfn (6x6 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 DSPIC33EP32GS202-E/MX.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GS202-E/MX is suitable for 6 applications: Switch-Mode Power Supplies (SMPS), Interleaved Power Factor Correction (PFC), Digital Lighting Ballasts and LED Drivers, DC-DC Converters and Point-of-Load Regulation, Battery Chargers and Power Conversion Subsystems, General Digital Control and Embedded Sensing.
Switch-Mode Power Supplies (SMPS)
The DSPIC33EP32GS202-E/MX is purpose-built for digital SMPS control: its Interconnected High-Speed PWM module supports cycle-by-cycle duty-cycle updates, dead-time insertion and fast fault shutdown, while the high-speed 12-bit ADC with integrated PGA samples voltage and current feedback synchronized to the PWM period. On-chip comparators can trigger autonomous current-limit actions without CPU intervention, keeping protection latency in the sub-microsecond range. Running at 60 MIPS, the dsPIC33EP core closes voltage-mode or current-mode loops in firmware with plenty of headroom for multi-phase converters. Because compensation is digital, gain scheduling across load ranges (e.g., burst mode at light load) is done in software rather than with external compensation networks, reducing BOM count. Place the controller close to the power stage with short, Kelvin-routed sense lines to the PGA inputs for best noise performance.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip's 350W interleaved PFC reference design is built on this dsPIC DSC family, and the DSPIC33EP32GS202-E/MX carries the exact peripheral set required: multiple high-speed PWM outputs phase-shifted for interleaved legs, ADC conversions triggered at the midpoint of the PWM ramp to avoid switching noise, and PGA gain staging for inductor current sensing across universal AC input. The 60 MIPS-class core executes the average-current-mode PFC loop plus input-voltage feedforward each switching cycle. Operating from a 3V-3.6V rail, the controller tolerates the extended -40C to +125C ambient of power electronics enclosures (E grade). Digital implementation allows soft ramp, brown-out handling and hold-up management in firmware. Follow the reference design layout: keep the controller ground referenced to the quiet secondary or use isolation per the Microchip interleaved PFC design guide.
Recommended
Digital Lighting Ballasts and LED Drivers
High-brightness LED drivers and HID ballasts demand constant-current loops with fast over-current protection - precisely what the GS202's high-speed PWM plus on-chip comparators deliver. The 12-bit ADC with PGA reads shunt currents with programmable gain, avoiding external amplifiers, while the DAC provides an adjustable reference threshold for the comparators, implementing a trimmable analog current limit alongside the digital control loop. At 60 MIPS, dimming algorithms (phase-cut, PWM dimming, DALI-style protocols) run concurrently with the power loop in the DSPIC33EP32GS202-E/MX. The extended -40C to +125C rating suits enclosed luminaires and outdoor drivers. Peripheral Pin Select lets the DMX/DALI UART map to the most convenient pins, simplifying luminaire PCB routing. Use the dead-time and fault inputs of the PWM module for flicker-free arc or LED-string protection.
Recommended
DC-DC Converters and Point-of-Load Regulation
For telecom and server POL bricks, the DSPIC33EP32GS202-E/MX closes voltage loops at hundreds of kHz to MHz switching frequencies: the high-speed PWM resolution and the ADC's ability to sample within a single PWM cycle support transient-responsive digital control (e.g., V^2-style or adaptive voltage positioning). On-die comparators provide hardware over-current latch-off, and the 32KB Flash accommodates PMBus-style telemetry firmware with headroom. The 3V-3.6V supply and 6x6 mm UQFN package keep controller area small on dense converter boards, and the -40C to +125C E-grade rating covers forced-air and conduction-cooled environments. Use the three program breakpoints plus JTAG run-time watch during firmware bring-up of fast loops. Keep sense traces differential into the PGA inputs and sample synchronized to the PWM to reject ripple-induced noise.
Recommended
Battery Chargers and Power Conversion Subsystems
Multi-chemistry battery chargers combine a fast current loop with slower supervisory logic - temperature qualification, charge-state sequencing and safety timers. The DSPIC33EP32GS202-E/MX runs the switching current loop via high-speed PWM plus comparator-based cycle limiting, while the same core schedules CC/CV transitions, JEITA-style temperature derating from NTC readings via the 12-bit ADC, and termination algorithms. The on-chip DAC supplies the comparator reference, trimming current thresholds in firmware without external DACs. Six virtual I/O ports and Peripheral Pin Select simplify charger front-panel and communication mapping (UART/I2C-class peripherals are part of the dsPIC33EP set). The extended temperature grade supports automotive-adjacent and industrial chargers. Budget Flash carefully: the 32KB capacity fits a full Li-ion/LiFePO4 charger state machine with logging, or step to the pin-compatible 64GS202 for protocol-rich designs.
Recommended
General Digital Control and Embedded Sensing
Beyond power conversion, the DSPIC33EP32GS202-E/MX serves as a compact 16-bit control processor for closed-loop sensing: the PGA-enhanced 12-bit ADC digitizes bridge and shunt signals, DSP multiply-accumulate instructions run digital filters (IIR/FIR) on the sampled data, and Peripheral Pin Select maps interrupts and communication to any of the I/O pins, all of which support external interrupts. IEEE 1149.2 JTAG boundary scan aids board-level test in production, and three program breakpoints plus one complex data breakpoint accelerate firmware debug. The -40C to +125C range and 3V-3.6V operation fit industrial sensors and actuator controllers. ICSP with any matched PGECx/PGEDx pair allows field programming through a single 4-wire header. With 32KB Flash, the device typically hosts the control application plus a bootloader; verify code size before adding protocol stacks.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202-E/MX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS202-E/MX | DSPIC33EP16GS202-E/MX | DSPIC33EP32GS202-I/MM | DSPIC33EP32MC202-E/MX |
|---|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm) | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same | 28-QFN-S (6x6 mm) - verify pads | 28-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 64 KB | 16 KB | 32 KB | 32 KB |
| Performance | 60 MIPS (DigiKey listing) | Same dsPIC33EP core | Same dsPIC33EP core | Same dsPIC33EP core | Same dsPIC33EP core |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) |
| Peripheral Class | Digital Power (GS): High-Speed PWM, ADC+PGA, Comparators, DAC | Digital Power (GS) - same set | Digital Power (GS) - same set | Digital Power (GS) - same set | Motor Control (MC) - MC-oriented set |
| Operating Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
Key Differentiators
- Digital-power (GS) peripheral integration (vs DSPIC33EP32MC202-E/MX)
- Extended temperature range (vs DSPIC33EP32GS202-I/MM)
- Memory scaling on identical footprint (vs DSPIC33EP64GS202-E/MX)
Design Notes
Do not confuse MX (28-UQFN) with MM (28-QFN-S) footprints - both are 28-pin 6x6 mm parts, but pad geometries differ, and a UQFN land pattern will not accept a QFN-S body reliably. Confirm the package code on your BOM and PCB fabrication drawing. Additionally, the -E suffix means extended temperature (-40C to +125C); the -I variant only guarantees -40C to +85C and is not a substitute in hot power-electronics enclosures.
For ICSP programming, use any matched PGECx/PGEDx pair - if PGEC2 carries ICSPCLK, the programming data must be on PGED2; mixing pairs from different indexes prevents programming. Route the programming header as a dedicated 4-5 pin connector with short traces, and keep all VDD/VSS pairs decoupled per the northernsoftware dsPIC33EP32GS202 programming notes. Isolate the programming header from the power stage during in-circuit debug to avoid fault-trip interference.
Sample the ADC synchronized to the PWM waveform (mid-ramp trigger) so switching transients are not captured; this alone can reduce current-sense noise by an order of magnitude in SMPS loops. Use Kelvin connections at shunt resistors into the PGA inputs and keep the analog reference free of PWM return currents. The on-chip comparators provide the fastest protection path - wire their fault outputs to the PWM module fault inputs rather than relying on firmware-only over-current shutdown.
Compliance Information
Verified web data does not include explicit RoHS/REACH certificates for this orderable part. Pull the official Microchip compliance documentation for the exact date code. The '-E' suffix denotes -40C to +125C temperature grade, not automotive qualification.
