DSPIC33EP32GS202T-E/SS - 16-bit DSC 32KB Flash 70MIPS | Microchip
MPN: DSPIC33EP32GS202T-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.53 | $4.53 |
| 10 | $4.05 | $40.50 |
| 100 | $3.72 | $372.00 |
| 500 | $3.4 | $1,700.00 |
| 1,000 | $3.1 | $3,100.00 |
DSPIC33EP32GS202T-E/SS Overview
A digital signal controller combines the computational throughput of a DSP core with the peripheral integration and deterministic behavior of a microcontroller. In the power-management hierarchy, the dsPIC33EP32GS202 sits between general-purpose MCUs and dedicated power-management ICs, replacing analog control loops with firmware-executed control algorithms such as voltage-mode, current-mode, and multi-loop digital control.
Key differentiating features include interconnected high-speed PWM modules for precise switching-waveform generation, high-speed analog-to-digital converters for fast feedback sampling, programmable gain amplifiers (PGA) that reduce external signal-conditioning circuitry, and on-chip comparators for fast cycle-by-cycle current limiting. Together these peripherals form a complete digital power-control loop on a single chip.
Architecturally, the dsPIC33E core uses separate program and data memory spaces with dedicated buses, per the dsPIC33EPXXGS202 Family Data Sheet (DS70005208E), enabling simultaneous instruction fetch and data access that sustains the 70 MIPS throughput. The flash-based program memory supports in-circuit and self programming for field updates.
Typical applications include interleaved power factor correction (Microchip's reference design achieves a single high-voltage DC output up to 350W from a universal input range), AC-DC and DC-DC converter control, LED drivers, battery chargers, and uninterruptible power supplies.
When designing with this device, budget PWM resolution against switching frequency and verify ADC sample timing alignment with PWM trigger points to minimize control-loop latency. The 'T' suffix denotes tape-and-reel packaging for automated assembly; the '/E' suffix denotes the -40C to +125C extended operating range.
This page synthesizes distributor pricing, verified drop-in alternatives within the same 28-SSOP footprint, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS202T-E/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-E/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Application Focus, Functional Safety Support.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS202T-I/SS
✅ Drop-In✓ In Stock
$3.68 / Unit
View Datasheet →DSPIC33EP32GS202-E/SS
✅ Drop-In✓ In Stock
$3.2 / 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 →DSPIC33EP32GS202T-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC |
| Max CPU Speed | 70 MIPS |
| Program Memory (Flash) | 32 KB |
| Package | 28-SSOP (0.209 in body width) |
| Operating Temperature | -40C to +125C (E grade) |
| PWM | High-speed PWM for digital power |
| ADC | High-speed ADC with PGA |
| Comparators | On-chip comparators |
| Memory Architecture | Separate program and data memory spaces and buses |
| Target Applications | SMPS and digital power conversion |
| Packaging | Tape and Reel (T/R) |
| Mounting Type | Surface Mount |
| Functional Safety Support | FuSa family variant available (per OnlineComponents) |
DSPIC33EP32GS202T-E/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/CN3/RB0 — Analog input 0 / positive voltage reference / change notification / port B bit 0 |
| Pin 3 | AN1/VREF-/CN2/RB1 — Analog input 1 / negative voltage reference / change notification / port B bit 1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / change notification / port B bit 2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / change notification / port B bit 3 |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 / change notification / port B bit 4 |
| Pin 7 | VDD — Positive supply |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Oscillator crystal input / external clock input / change notification / port A bit 2 |
| Pin 10 | OSCO/CLKO/RC15 — Oscillator crystal output / clock output / port C bit 15 |
| Pin 11 | AN5/QEB/IC8/CN8/RB5 — Analog input 5 / QEI phase B / input capture 8 / change notification / port B bit 5 |
| Pin 12 | SCL1/RA3 — I2C clock 1 / port A bit 3 |
| Pin 13 | SDA1/RA4 — I2C data 1 / port A bit 4 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | VDD — Positive supply |
| Pin 16 | RP15/RC0 — Remappable peripheral pin 15 / port C bit 0 |
| Pin 17 | RP14/RC1 — Remappable peripheral pin 14 / port C bit 1 |
| Pin 18 | RP13/RC2 — Remappable peripheral pin 13 / port C bit 2 |
| Pin 19 | RP12/RC3 — Remappable peripheral pin 12 / port C bit 3 |
| Pin 20 | RP11/RC4 — Remappable peripheral pin 11 / port C bit 4 |
| Pin 21 | PGD3/RP10/RC5 — Debug data channel 3 / remappable pin 10 / port C bit 5 |
| Pin 22 | PGC3/RP9/RC6 — Debug clock channel 3 / remappable pin 9 / port C bit 6 |
| Pin 23 | RP8/RC7 — Remappable peripheral pin 8 / port C bit 7 |
| Pin 24 | RP7/RC8 — Remappable peripheral pin 7 / port C bit 8 |
| Pin 25 | PGD/RP6/RC9 — Primary ICSP data / remappable pin 6 / port C bit 9 |
| Pin 26 | PGC/RP5/RB15 — Primary ICSP clock / remappable pin 5 / port B bit 15 |
| Pin 27 | RP4/RB14 — Remappable peripheral pin 4 / port B bit 14 |
| Pin 28 | AVDD/AVSS-family analog supply pins — Analog supply/ground distribution per family pin diagram |
Typical Applications
DSPIC33EP32GS202T-E/SS is suitable for 6 applications: Interleaved Power Factor Correction, AC-DC and DC-DC SMPS Control, Digital LED Drivers, Battery Chargers, Uninterruptible Power Supplies, Motor Control for Power Tools and Appliances.
Interleaved Power Factor Correction
The DSPIC33EP32GS202T-E/SS is the control core of Microchip's Interleaved PFC reference design, which operates from a universal AC input voltage range and produces a single high-voltage DC output up to 350W. The interconnected high-speed PWM generates interleaved switching waveforms that cancel input current ripple, while the high-speed ADC with programmable gain amplifier samples inductor current and bus voltage fast enough for per-cycle average-current-mode control. On-chip comparators provide hardware overcurrent protection independent of firmware latency. The 70 MIPS dsPIC33E core executes the PI control loops and power-limit routines with deterministic timing, replacing an analog PFC controller and its associated tolerance, drift, and board-area costs with a single firmware-configurable device.
Recommended
AC-DC and DC-DC SMPS Control
In switch-mode power supplies, the DSPIC33EP32GS202T-E/SS closes voltage and current feedback loops digitally. The high-speed PWM supports complementary outputs with dead-time insertion for half-bridge and synchronous buck topologies, and its resolution remains adequate at typical SMPS switching frequencies. The high-speed ADC is triggered synchronously from the PWM, sampling at the midpoint of the off-time to minimize switching-noise corruption of the feedback signal - a technique enabled by the interconnected PWM/ADC architecture of the GS202 family. The programmable gain amplifier conditions shunt-based current signals without external op-amps, and on-chip comparators implement cycle-by-cycle current limiting in hardware, ensuring protection even if firmware stalls. The 70 MIPS core leaves headroom for adaptive control, soft-start, and housekeeping tasks in a 32KB flash footprint.
Recommended
Digital LED Drivers
Constant-current LED drivers benefit directly from the DSPIC33EP32GS202T-E/SS peripheral set. The high-speed PWM drives the power stage with dimming resolution that analog PWM controllers struggle to match at low duty cycles, enabling smooth deep-dimming without visible flicker. The high-speed ADC measures output current through a shunt via the on-chip PGA, allowing closed-loop current regulation that compensates LED forward-voltage drift over temperature and lifetime. Firmware-implemented dimming curves, thermal foldback, and fault logging add product differentiation at no additional component cost. The -40C to +125C extended grade (/E suffix) suits enclosed LED luminaires where ambient temperatures near the controller exceed the standard industrial range, and the 28-SSOP footprint keeps the driver board compact for fixture integration.
Recommended
Battery Chargers
Multi-chemistry battery charging requires precise current, voltage, and temperature profiling - exactly what the DSPIC33EP32GS202T-E/SS provides in firmware. The high-speed ADC with PGA reads battery current and pack voltage, while on-chip comparators guard against overcurrent in hardware between firmware decisions. The 70 MIPS core implements CC/CV charging curves, termination detection, NTC-based temperature qualification, and fault recovery state machines, all configurable per chemistry without hardware changes. The high-speed PWM controls buck or flywheel power stages with dead-time control for synchronous rectification, improving charge efficiency. The 32KB flash accommodates multi-chemistry firmware tables, and the extended -40C to +125C temperature range supports automotive-adjacent and outdoor charging equipment. The 28-SSOP package supports compact charger PCBs.
Recommended
Uninterruptible Power Supplies
UPS systems combine an AC-DC front end, a DC-DC boost stage, and an inverter - each needing coordinated closed-loop control that the DSPIC33EP32GS202T-E/SS can host for compact single-phase units. The interconnected high-speed PWM generates the inverter switching pattern with dead-time insertion, the high-speed ADC samples output voltage, battery current, and bus voltage at PWM-synchronized instants to reject switching noise, and the comparators provide hardware-level protection against shoot-through and overload conditions. The 70 MIPS core runs the inverter voltage regulator plus battery-management logic simultaneously. The extended -40C to +125C grade tolerates the hot internal environment of enclosed UPS chassis, and the 32KB flash holds waveform tables, transfer logic, and communication firmware in one non-volatile image.
Recommended
Motor Control for Power Tools and Appliances
While the GS202 family is optimized for digital power conversion, its high-speed PWM, fast ADC, and comparators also suit compact brushless-DC and permanent-magnet motor drives found in appliances, fans, and power tools. The high-speed PWM produces six-channel or complementary drive patterns with programmable dead time, the high-speed ADC with PGA conditions shunt-based phase-current sensing, and on-chip comparators implement hardware overcurrent trip without firmware latency. The 70 MIPS core executes sensorless back-EMF observers or block commutation sequencing with deterministic timing. Firmware flexibility allows one controller platform to cover multiple product power levels, and the -40C to +125C extended grade withstands motor-adjacent thermal environments. The 28-SSOP package fits the space-constrained driver boards typical of appliance designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS202T-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS202T-I/SS | DSPIC33EP32GS202-E/SS | DSPIC33EP16GS202T-E/SS | DSPIC33EP16GS202-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 16 KB | 16 KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| Digital Power Peripherals | High-speed PWM, ADC + PGA, comparators | Same peripheral set | Same peripheral set | Same peripheral set | Same peripheral set |
| Packaging | Tape & Reel (T) | Tape & Reel (T) | Tube (non-T) | Tape & Reel (T) | Tube (non-T) |
Key Differentiators
- Extended -40C to +125C temperature grade (vs DSPIC33EP32GS202T-I/SS)
- Double the program memory at the same pinout (vs DSPIC33EP16GS202T-E/SS)
- Integrated digital-power analog front end (vs DSPIC33EP32GS202-E/SS)
Design Notes
The 28-SSOP (0.209 in body) land pattern must match the datasheet mechanical drawing exactly; the same footprint also accepts DSPIC33EP16GS202 and /I-grade variants, so design the PCB once and qualify all family members for supply-chain flexibility. Place 100 nF ceramic decoupling capacitors directly across each VDD/VSS pin pair with short, wide traces, and add bulk capacitance of several uF near the controller. Keep the high-speed PWM output traces away from the ADC input traces and route the analog ground as a quiet island connected to digital ground at a single point near the VSS pin.
In digital power converters, synchronize the high-speed ADC sampling to the PWM using the PWM-triggered conversion feature so samples are taken during the quiet window of each switching cycle (typically the middle of the off-time for a buck-derived stage). Sampling at PWM edges corrupts current feedback with switching noise and can destabilize the control loop. Use the on-chip comparators for cycle-by-cycle current limit so protection acts in hardware even if firmware latency spikes; do not rely solely on firmware-based overcurrent checks.
The /E grade is qualified to +125C ambient, but verify junction temperature in the final enclosure: Estimated: junction temperature equals ambient plus power dissipation (core plus I/O plus internal regulator losses) multiplied by the SSOP theta-JA from the family data sheet. In a sealed 350W PFC chassis, ambient near the controller can exceed 85C, which is precisely why the /E variant exists; still confirm with a thermocouple measurement on the package during worst-case burn-in before releasing the layout.
The 'T' suffix means tape-and-reel ordering - for hand placement or prototyping, order the tube-packaged DSPIC33EP32GS202-E/SS instead. The '/' suffix in the MPN contains a slash that some procurement and ERP systems mishandle; confirm the exact ordering code with your distributor. Also remember the E grade and I grade share one datasheet - never copy temperature limits from the family table without checking your specific suffix, and confirm programming-pin connections (MCLR, PGD/PGC) against the Flash Programming Specification before routing ICSP headers.
Compliance Information
Compliance status not explicitly stated in the retrieved web data; confirm RoHS/REACH/lead-free status on the Microchip product page or distributor compliance documentation before ordering.
