DSPIC33EP32GS502T-E/SO - 16-bit 60 MIPs DSC 32KB | Microchip
MPN: DSPIC33EP32GS502T-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.45 | $4.45 |
| 10 | $4.18 | $41.80 |
| 100 | $3.89 | $389.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.4 | $3,400.00 |
DSPIC33EP32GS502T-E/SO Overview
A Digital Signal Controller (DSC) is a hybrid device class that merges the control-path familiarity of a general-purpose microcontroller with the arithmetic throughput of a digital signal processor. Within the power-management IC hierarchy, DSCs sit above simple analog controllers and alongside MCUs and DSPs, serving as the intelligent core of switching power supplies, motor drives, and digital power conversion systems.
Key features include the 70 MIPS-class dsPIC33EP core running at 60 MHz (60 MIPs), on-chip high-speed PWM peripherals purpose-built for SMPS control, DSP engine instructions with barrel shifter support, boundary-scan (JTAG) debug, and multiple low-power modes. The GS (digital power) variant adds specialized analog and timing blocks tailored to power conversion loops.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with DSP multiply-accumulate instructions, enabling deterministic loop execution for current-mode and voltage-mode control. The E/SO temperature suffix and T (tape-and-reel) packing target automated assembly in industrial and automotive builds.
Typical applications include interleaved power factor correction (Microchip's 350W universal-input interleaved PFC reference design targets this device family), LLC and buck/boost digital power supplies, BLDC/PMSM motor control, and digital lighting ballasts.
Design tip: budget the 3.3V rail carefully - the device is specified at 3V to 3.6V only, and core voltage is internally regulated from VCAP, so decoupling and VCAP capacitance must follow the datasheet exactly.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GS502T-E/SO — 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 DSPIC33EP32GS502T-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Series, Qualification, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GS502T-I/SO
✅ Drop-In✓ In Stock
$3.02 / Unit
View Datasheet →DSPIC33EP32GP502T-E/SO
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33EP32GS502-E/SO
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33EP32GP502T-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33EP32GS502T-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E (DSC) |
| Maximum CPU Speed | 60 MIPs |
| Flash Memory | 32KB (32K x 8) |
| RAM | 4KB (4K x 8) |
| Supply Voltage Range | 3 V to 3.6 V |
| I/O Count | 21 |
| Operating Temperature | -40C to +125C |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Qualification | Automotive, AEC-Q100 |
| Functional Safety Support | FuSa documentation available |
| Series | dsPIC33EP (GS digital power series) |
| Debug / Scan | Boundary scan (JTAG) supported |
| Low Power Modes | Yes |
DSPIC33EP32GS502T-E/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset (external reset input / programming voltage) |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / positive voltage reference / port B0 |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / negative voltage reference / port B1 |
| Pin 4 | AN2/SS1/RB2 — Analog input 2 / SPI slave select / port B2 |
| Pin 5 | AN3/INDX/RB3 — Analog input 3 / encoder index / port B3 |
| Pin 6 | AN4/QEA/RB4 — Analog input 4 / quadrature encoder A / port B4 |
| Pin 7 | AN5/QEB/RB5 — Analog input 5 / quadrature encoder B / port B5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO — Oscillator crystal output / clock output |
| Pin 11 | VCAP/VDDCORE — Internally regulated core voltage - external capacitor required |
| Pin 12 | VDD — 3V to 3.6V supply |
| Pin 13 | AN6/RB6 — Analog input 6 / port B6 |
| Pin 14 | AN7/RB7 — Analog input 7 / port B7 |
| Pin 15 | VSS — Ground reference |
| Pin 16 | VDD — 3V to 3.6V supply |
| Pin 17 | RB10/PGED — Port B10 / debug data channel |
| Pin 18 | RB11/PGEC — Port B11 / debug clock channel |
| Pin 19 | RB12 — Port B12 / remappable peripheral pin |
| Pin 20 | RB13 — Port B13 / remappable peripheral pin |
| Pin 21 | RB14 — Port B14 / remappable peripheral pin |
| Pin 22 | RB15 — Port B15 / remappable peripheral pin |
| Pin 23 | SDA1/RP20 — I2C data 1 / remappable peripheral pin 20 |
| Pin 24 | SCL1/RP21 — I2C clock 1 / remappable peripheral pin 21 |
| Pin 25 | VDD — 3V to 3.6V supply |
| Pin 26 | VSS — Ground reference |
| Pin 27 | RP22/RTCC — Remappable peripheral pin 22 / real-time clock calibration |
| Pin 28 | RP23/INT0 — Remappable peripheral pin 23 / external interrupt 0 |
Typical Applications
DSPIC33EP32GS502T-E/SO is suitable for 6 applications: Interleaved Power Factor Correction (PFC), Digital SMPS (Buck / Boost / LLC) Control, BLDC / PMSM Motor Control, Digital Lighting and LED Drivers, Automotive and Functional Safety Subsystems, Embedded Industrial Control and Telemetry.
Interleaved Power Factor Correction (PFC)
The DSPIC33EP32GS502T-E/SO is the controller in Microchip's interleaved PFC reference design, which takes a universal AC input and produces a single high-voltage DC output up to 350W. The 60 MIPs dsPIC33E core with DSP multiply-accumulate instructions executes the inner current loop deterministically at switching frequency, while the GS-series high-speed PWM channels generate interleaved phase-shifted gate drives with hardware dead-time. Its AEC-Q100 qualification and -40C to +125C range suit consumer and industrial PSU designs alike. The trade-off versus a dedicated analog PFC controller is firmware development effort, repaid by programmability, digital compensation tuning, and in-system diagnostics that analog parts cannot offer.
Recommended
Digital SMPS (Buck / Boost / LLC) Control
For switch-mode power supplies, the GS-series DSC replaces discrete analog control loops with a firmware-based compensator. The DSPIC33EP32GS502T-E/SO's 16-bit core at 60 MIPs closes voltage-mode or current-mode loops at hundreds of kHz, and the digital-power-optimized PWM module provides fine duty-cycle resolution with complementary outputs and dead-time insertion - critical for LLC half-bridge topologies. Operating at 3V to 3.6V from a small auxiliary winding, the 28-SOIC draws modest power and integrates self-programmable 32KB FLASH for field firmware updates. Designers should reserve RAM carefully: the 4KB buffer budget must accommodate ADC sampling, control variables, and telemetry in one deterministic loop.
Recommended
BLDC / PMSM Motor Control
Sensorless and sensored motor drives benefit from the dsPIC33EP32GS502's DSP engine: single-cycle MAC instructions compute Clarke/Park transforms and PI current loops within one PWM period. The 60 MIPs core supports field-oriented control (FOC) of PMSM motors at typical drive switching frequencies, while GS-series PWM outputs drive a three-phase inverter via external gate drivers. The 21 I/O lines interface Hall sensors, encoders (QEA/QEB on RB4/RB5), and fault feedback. The -E automotive grade supports pumps, fans, and actuators in vehicle environments; verify AEC documentation scope with Microchip for each end application before release.
Recommended
Digital Lighting and LED Drivers
High-brightness LED drivers demand precise, dimmable constant-current control. The DSPIC33EP32GS502T-E/SO generates high-resolution PWM and phase-shifted outputs for buck, boost, or flyback LED stages, with firmware-adjustable color mixing and DALI/DMX-style communication implemented in software over UART peripherals. The 60 MIPs throughput sustains fast over-current protection loops that analog LED controllers approximate with comparators. In -40C to +125C outdoor luminaires, the E-grade temperature rating eliminates derating concerns inside sealed housings. The 28-SOIC's 7.50 mm body simplifies creepage and clearance layout on mains-referenced boards compared with denser QFN footprints.
Recommended
Automotive and Functional Safety Subsystems
With AEC-Q100 qualification and Functional Safety (FuSa) documentation support per DigiKey's listing, the DSPIC33EP32GS502T-E/SO targets automotive and industrial subsystems that need demonstrable development rigor: auxiliary power modules, heater controllers, battery-adjacent monitoring boards, and safety-relevant actuation. The -40C to +125C E-grade covers underhood and on-chassis ambient extremes. Boundary-scan support simplifies in-circuit test at contract manufacturers, and the self-programmable FLASH enables OTA-style firmware updates via a bootloader. Teams should obtain the relevant FuSa safety manual from Microchip and budget RAM (4KB) for CRC checks and redundant control variables typical of safety architectures.
Recommended
Embedded Industrial Control and Telemetry
Beyond power conversion, the dsPIC33EP32GS502 serves as a compact industrial controller: 21 I/O lines with remappable peripheral pins support UART, SPI, and I2C for sensor networks and Modbus-style field links. The 16-bit core at 60 MIPs handles FFT-based vibration monitoring and PID loops faster than typical 8-bit MCUs, while 32KB FLASH holds application plus bootloader with room to spare. Low-power modes allow battery-backed data loggers to sleep between samples. Compared with a PIC16LF18876-class MCU (also on XAIPART), the dsPIC33EP adds DSP throughput and higher clock speed at roughly double the price - choose the dsPIC when math performance, not just I/O control, drives the requirement.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GS502T-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GS502T-I/SO | DSPIC33EP32GP502T-E/SO | DSPIC33EP32GS502-E/SO | DSPIC33EP32GP502T-E/MM |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-QFN-S |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs |
| Flash / RAM | 32KB / 4KB | 32KB / 4KB | 32KB / 4KB | 32KB / 4KB | 32KB / 4KB |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
| Peripheral Family (digital power peripherals) | GS (digital power optimized) | GS (digital power optimized) | GP (general purpose) | GS (digital power optimized) | GP (general purpose) |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tube / Tray | Tape & Reel |
Key Differentiators
- Extended temperature range for automotive builds (vs DSPIC33EP32GS502T-I/SO)
- Digital-power-optimized peripheral set (vs DSPIC33EP32GP502T-E/SO)
- Tape-and-reel for automated assembly (vs DSPIC33EP32GS502-E/SO)
Design Notes
Supply the DSPIC33EP32GS502T-E/SO with a tightly regulated 3.3V rail (3V to 3.6V absolute range). Place a 0.1uF ceramic capacitor within 5 mm of each VDD pin and a bulk 10uF nearby. The VCAP/VDDCORE pin (pin 11) requires the exact low-ESR capacitor value specified in the Microchip datasheet - undersizing it causes core brownouts during high-MIPS loop execution, showing up as random resets rather than clean faults.
Route the digital power PWM outputs (RB4/RB5 area, encoder/quadrature capable) away from the OSC1/OSC2 crystal lines (pins 9-10) to prevent gate-drive coupling into the oscillator. On mains-referenced SMPS boards, the 7.50 mm SOIC body gives more creepage between adjacent pins than QFN packages - exploit this for spacing to a resistor divider that senses the high-voltage DC bus. Keep the VCAP loop shortest of all traces.
Do not substitute the -I grade (-40C to +85C) into enclosures that reach 125C ambient; the GS502 executing 60 MIPs control loops self-heats several degrees above ambient. Also, the 'T' in the part number means tape-and-reel: ordering DSPIC33EP32GS502-E/SO instead yields tubes/trays, which matters for pick-and-place feeders. Finally, MCLR (pin 1) needs a pull-up (4.7k-10k) for reliable ICSP programming with PICkit/ICD tools.
Compliance Information
AEC-Q100 / automotive qualification per Hotenda product data. RoHS and lead-free status inferred from standard Microchip active-part status; REACH, halogen-free, and conflict minerals not stated in the provided data.
