DSPIC33EP64GS805T-I/PT - 70 MIPS 16-bit DSC 48-TQFP | Microchip
MPN: DSPIC33EP64GS805T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.95 | $495.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.98 | $3,980.00 |
DSPIC33EP64GS805T-I/PT Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and control architecture of a microcontroller. Within the power-management hierarchy, the DSC sits above generic MCUs: it closes high-bandwidth control loops digitally, replacing analog compensation networks in switch-mode power supplies. The dsPIC33EP family executes DSP instructions (MAC, dual fetch) alongside standard MCU code, making it a bridge between real-time signal processing and embedded system control.
The GS80x family is purpose-built for digital power conversion. Its interconnected high-speed PWM module provides complementary outputs with dead-time control, fault inputs, and phase-shifted or interleaved topologies support. A high-speed 10/12-bit ADC with up to 4 MSPS capability feeds on-chip analog comparators and a programmable gain amplifier (PGA), enabling current-mode control without external signal-conditioning stages.
The device integrates a CAN 2.0B controller, up to two I2C and two SPI ports, UART channels with I2S support, 4-channel DMA, 7 timers, and 33 general-purpose I/O. Dual-partition Flash supports live firmware updates, critical for field-deployed power converters. Peripherals communicate through an internal bus architecture that reduces latency in time-critical control loops executing at 70 MIPS.
Typical applications include AC-DC converters, interleaved power factor correction (as demonstrated in Microchip's 350W Interleaved PFC reference design), multi-output buck/boost regulators, digital lighting ballasts, battery chargers, and solar micro-inverters.
When designing with this DSC, budget the 3.0V to 3.6V supply carefully; the high-speed PWM and ADC require clean decoupling on every VDD/VDDCORE pin pair. The Tape & Reel (T suffix) packaging suits automated pick-and-place production.
This page synthesizes distributor inventory data, same-family drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP64GS805T-I/PT — 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 DSPIC33EP64GS805T-I/PT (same form factor and footprint) — differing in Functional Safety (FuSa), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GS805-I/PT
✅ Drop-In✓ In Stock
$3.48 / Unit
View Datasheet →DSPIC33EP64GS805T-E/PTVAO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP64GS805T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32GS705T-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GS805T-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33EP 16-bit |
| Maximum Operating Frequency | 70 MIPS |
| Program Memory Size | 64KB (64K x 8) Flash |
| RAM Size | 8KB (8K x 8) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Number of I/O | 33 |
| CAN Controller | Yes (CAN 2.0B) |
| DMA Channels | 4 |
| Timers | 7 |
| Peripherals | POR, PWM, WDT, LVD, DMA, I2S |
| Package | 48-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T) |
| Functional Safety (FuSa) | Supported |
| Dual Partition Flash | Yes |
DSPIC33EP64GS805T-I/PT 48-tqfp (7x7 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP64GS805T-I/PT (48-tqfp (7x7 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 DSPIC33EP64GS805T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP64GS805T-I/PT is suitable for 6 applications: AC-DC Converters and Power Factor Correction, Digital SMPS (Buck, Boost, LLC, Half-Bridge), Battery Chargers and BMS Host Control, Solar Micro-Inverters and MPPT, Digital Lighting Ballasts and LED Drivers, Industrial Motor Drives and Telecom Power Shelves.
AC-DC Converters and Power Factor Correction
The DSPIC33EP64GS805T-I/PT is a natural controller for AC-DC front ends and power factor correction stages because its interconnected high-speed PWM can generate phase-shifted or interleaved gate signals with hardware dead-time insertion, while the high-speed ADC samples inductor current and bus voltage on PWM-triggered conversions at up to 4 MSPS-class rates. Microchip's own 350W Interleaved PFC reference design uses this controller family with universal AC input, demonstrating proven firmware architecture. Placed as the sole control IC, it replaces analog PFC controllers plus a supervisory MCU, cutting BOM count. The CAN interface reports bus voltage and power telemetry in server and telecom rectifiers, and dual-partition Flash allows field updates without interrupting power delivery.
Recommended
Digital SMPS (Buck, Boost, LLC, Half-Bridge)
For multi-loop digital switch-mode power supplies, this DSC closes voltage and current loops digitally at 70 MIPS using DSP MAC instructions for PID and 2p2z compensators. The complementary PWM outputs with programmable dead time drive half-bridge and LLC stages directly through gate-driver ICs, while on-chip comparators implement cycle-by-cycle current limiting in hardware for cycle-accurate protection even if firmware stalls. The 12-bit ADC with PGA amplifies shunt signals without external op-amps. Typical designs run the control loop at 100 to 500 kHz switching frequency with sample rates matched to the PWM period; the 4-channel DMA moves conversion results to RAM without CPU cycles, keeping worst-case loop latency deterministic for tight transient response specifications.
Recommended
Battery Chargers and BMS Host Control
Smart battery chargers benefit from this part's combination of precision PWM control and CAN 2.0B communication. The controller executes multi-stage charging profiles (CC, CV, taper, top-off) as digital control loops, adjusting PWM duty from the 12-bit ADC feedback of current and pack voltage through the PGA. CAN connects the charger to vehicle or server management systems for charge-request messaging, critical in EVSE and 48V telecom battery shelves. Dual-partition Flash enables charge-algorithm updates in the field as battery chemistry firmware evolves. The 33 I/O lines handle contactor drives, LED indicators, and interlock sensing, allowing one DSC to own the complete charger power path and supervisory logic while operating from a 3.3V logic rail across -40C to +85C.
Recommended
Solar Micro-Inverters and MPPT
Grid-tied micro-inverters demand two cooperating control loops: maximum power point tracking on the DC side and synchronized current injection on the AC side. The DSPIC33EP64GS805T-I/PT interleaves these tasks at 70 MIPS, with the high-speed PWM generating interleaved boost phases and the ADC sampling panel voltage, current, and grid phase via PWM-triggered conversions. On-chip comparators provide hardware overcurrent shutdown. The 64KB Flash accommodates MPPT algorithms, grid-compliance firmware, anti-islanding logic, and a CAN or UART reporting path. Dual-partition Flash matters here because deployed inverters on rooftops must be field-updatable; a validated second partition guarantees the unit recovers even if an update fails mid-write, protecting a ten-year service life product.
Recommended
Digital Lighting Ballasts and LED Drivers
High-intensity discharge ballasts and high-power LED drivers use this DSC for constant-current regulation with dimming control. The high-speed PWM output stage drives the buck or flyaway stage at hundreds of kilohertz, while the ADC plus PGA closes the LED current loop with sub-1% setpoint accuracy. Dimming is implemented as PWM or analog current reference changes computed in firmware, supporting DALI or 0-10V interfaces through UART and the 33 I/O pins. Cycle-by-cycle current limiting via on-chip comparators protects against shorted LED strings without firmware intervention. The industrial -40C to +85C rating covers outdoor luminaire environments, and the 3.0V to 3.6V supply matches standard auxiliary bias rails derived from the converter output.
Recommended
Industrial Motor Drives and Telecom Power Shelves
In telecom power shelves and small industrial drives, this DSC serves as the power-stage controller where CAN 2.0B provides the management bus. The 16-bit 70 MIPS core executes field-oriented control or digital rectification loops with DSP arithmetic, while 4 DMA channels stream ADC results and CAN frames without stealing loop time. Seven timers coordinate multi-rail sequencing and fault time-outs. Dual-partition Flash allows remote firmware campaigns across a fleet of rectifier modules, a decisive operational advantage. Designers should reserve one comparator channel for hardware overcurrent and use the WDT plus LVD peripherals to guarantee safe shutdown on brownout. The 48-TQFP 7x7 mm footprint suits the dense card layouts typical of shelf power modules.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64GS805T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS805-I/PT | DSPIC33EP64GS805T-E/PTVAO | DSPIC33EP32GS705T-I/PT |
|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| Packaging / Supply Format | Tape & Reel | Tray | Tape & Reel | Tape & Reel |
| CAN Interface | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) |
Key Differentiators
- Purpose-built digital-power peripherals on-chip (vs DSPIC33EP64GP503T-I/TL)
- Double the Flash at identical footprint and price class (vs DSPIC33EP32GS705T-I/PT)
- Industrial I-grade cost/availability balance (vs DSPIC33EP64GS805T-E/PTVAO)
Design Notes
The DSPIC33EP64GS805T-I/PT requires a 3.0V to 3.6V supply plus the VDDCORE pin connected to its internal regulator output capacitor (per the family datasheet supply architecture). Provide a dedicated 0.1uF ceramic on every VDD/VDDCORE pin pair placed within 2 mm of the pin, plus one 10uF bulk capacitor per supply group. In digital-power layouts the DSC shares a ground with high di/dt gate-drive paths; use a single solid ground plane with the analog AVDD/AVSS region star-connected to avoid ADC ground bounce corrupting current-loop samples.
Route high-speed PWM outputs away from analog feedback traces; the dead-time-controlled complementary outputs switch in synchronism with ADC triggers, so any coupling into the current-sense path appears as loop error. Keep the shunt-to-PGA traces differential and short, with a local RC anti-alias filter matched to the ADC sampling instant. Follow Microchip's Interleaved PFC reference design layout, which demonstrates separation of gate-drive, control, and analog sections on a 4-layer board.
Do not exceed the 3.6V maximum supply - the dsPIC33EP core tolerates far less margin than 5V-tolerant PIC16/18 parts. Configure the CONFIG bits for dual-partition boot correctly before first programming; an incorrect partition table can leave the unit booting the empty partition. Also note the E-grade (-40C to +125C) and I-grade (-40C to +85C) parts share the footprint but are NOT interchangeable in thermally aggressive designs - verify your ambient before substituting.
The interconnected high-speed PWM can switch edge rates faster than legacy MCU PWM modules. If conducted EMI margin is tight, use the PWM slew options or add series gate resistors (typically 4.7 to 22 ohm, estimated typical values for TQFP drive strength) rather than slowing the controller clock, which would degrade control-loop latency. Spread-spectrum the controller clock only if ADC sampling jitter can be tolerated by the compensator bandwidth.
Compliance Information
RoHS and lead-free status per standard Microchip commercial-grade product offering (T-I/PT suffix); detailed REACH/halogen declarations not present in retrieved data.
