DSPIC33EP64GS804T-I/PT - 16-bit 70 MIPS DSC, 64KB Flash | Microchip
MPN: DSPIC33EP64GS804T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.34 | $2,170.00 |
| 1,000 | $3.87 | $3,870.00 |
DSPIC33EP64GS804T-I/PT Overview
A digital signal controller combines the compute architecture of a digital signal processor with the peripheral set and control structure of a microcontroller. Within the power-management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP, providing deterministic execution for closed-loop control such as power factor correction, DC-DC conversion, and motor drive algorithms.
Key features include the interconnected High-Speed PWM module purpose-built for switching power supplies, an analog front end combining ADC inputs with programmable gain amplifiers (PGA) and on-chip comparators, a CAN interface for industrial communication, and Functional Safety (FuSa) support per the dsPIC33EP family documentation. The interconnected PWM-to-ADC trigger architecture minimizes control-loop latency, a critical parameter in totem-pole PFC designs where switching frequencies reach hundreds of kHz.
The GS-series analog integration reduces external component count: PGA outputs can feed comparators directly for fast overcurrent protection without CPU intervention, enabling cycle-by-cycle current limiting in hard-fault conditions. The 70 MIPS core executes the DSP multiply-accumulate instructions required by advanced digital control laws.
Typical applications include the Microchip TDTTP4000W066C 4kW bridgeless totem-pole PFC reference design using GaN FETs, digital AC-DC power supplies, solar micro-inverters, DC-DC converters, and brushless DC motor drives. The T suffix denotes tape-and-reel packaging for automated assembly.
Design consideration: this controller operates at 3.3V; level-shift any 5V CAN or logic interfaces, and follow Microchip's digital power layout guidelines to keep high dv/dt switch nodes away from the ADC reference.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP64GS804T-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 DSPIC33EP64GS804T-I/PT (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Supply Voltage, Functional Safety Support.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GS804-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →DSPIC33EP64GS804T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32GS804T-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GS704T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.44 / Unit
View Datasheet →DSPIC33EP64GP504T-E/TL
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →DSPIC33EP64GS804T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Maximum CPU Speed | 70 MIPS |
| Program Memory (Flash) | 64KB (64K x 8) |
| SRAM | 8KB |
| Supply Voltage | 3.3 V |
| Package | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| CAN Interface | Yes |
| High-Speed PWM | Yes (interconnected, digital power optimized) |
| ADC with PGA | Yes (programmable gain amplifier) |
| Comparators | Yes (on-chip) |
| Functional Safety Support | Yes (FuSa) |
| Programming Interface | ICSP (In-Circuit Serial Programming), MPLAB SNAP |
| Packaging | Tape and Reel (T suffix) |
DSPIC33EP64GS804T-I/PT 44-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP64GS804T-I/PT (44-tqfp (10x10 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 DSPIC33EP64GS804T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP64GS804T-I/PT is suitable for 6 applications: Bridgeless Totem-Pole PFC, Digital AC-DC Power Supplies, DC-DC Converters, Brushless DC Motor Drives, Solar Micro-Inverters, Industrial Automation and CAN Networking.
Bridgeless Totem-Pole PFC
The Microchip TDTTP4000W066C 4kW reference design demonstrates the dsPIC33EP64GS804 driving a bridgeless totem-pole PFC stage with GaN FETs in the fast-switching leg and low-RDS(on) MOSFETs in the slow-switching leg, achieving very high efficiency single-phase AC-DC conversion. The interconnected High-Speed PWM generates complementary, dead-time-controlled gates at hundreds of kHz, while on-chip comparators provide cycle-by-cycle overcurrent protection without CPU latency. The ADC with PGA samples inductor current synchronized to PWM triggers, enabling average-current-mode control loops to close within microseconds. The 70 MIPS DSP core executes the control law and the CAN interface reports telemetry to a system host.
Recommended
Digital AC-DC Power Supplies
Server and telecom rectifiers use the DSPIC33EP64GS804T-I/PT as the digital supervisor and controller, replacing analog control loops with firmware-executed voltage and current regulation. The 64KB Flash holds multiple protection and operating profiles, and the 8KB RAM sustains control-state variables at 70 MIPS. The interconnected PWM module supports phase-shifted full-bridge and LLC topologies with adaptive dead-time, while PGA-amplified current signals feed internal comparators for hardware fault shutdown. Digital control enables programmable output characteristics, hot-swap sequencing, and PMBus-style reporting over CAN, which analog controllers cannot offer without additional ICs.
Recommended
DC-DC Converters
High-density DC-DC modules (buck, boost, buck-boost) benefit from the GS804's tightly coupled PWM-ADC-comparator fabric. The controller implements voltage-mode or current-mode loops at switching frequencies beyond 200 kHz, with the comparator path protecting against inrush and short-circuit events in hardware. The 3.3V supply simplifies interface with other digital system rails, and the industrial -40C to +85C rating covers most indoor and outdoor power electronics environments. Digital implementation allows firmware-tuned transient response and soft-start profiles, replacing discrete compensation networks and reducing BOM cost and board area in compact converter designs.
Recommended
Brushless DC Motor Drives
Field-oriented control (FOC) of BLDC and PMSM motors leverages the 70 MIPS DSP multiply-accumulate capability for Clarke/Park transforms running at high loop rates. The interconnected High-Speed PWM produces six-channel three-phase gating with dead-time insertion, while PGA-conditioned phase currents feed the ADC synchronously with PWM center alignment for low-noise sampling. The 44-TQFP provides enough pins for hall/encoder inputs, fault inputs, and a CAN link to the motion controller. Firmware-based commutation also enables sensorless algorithms and adaptive tuning, giving the GS804 an advantage over fixed-hardware motor control ICs.
Recommended
Solar Micro-Inverters
Panel-level micro-inverters combine MPPT DC-DC conversion with grid-synchronized DC-AC inversion, both of which the DSPIC33EP64GS804T-I/PT can manage with its dual control resources. The interconnected PWM handles the high-frequency MPPT stage while software coordinates the line-frequency inverter bridge, with ADC channels monitoring panel voltage, current, and grid conditions. Grid-code compliance routines (anti-islanding, frequency ride-through) run in the 64KB Flash, and the on-chip comparators execute fast hardware fault isolation. The 10x10 mm TQFP suits the compact, thermally constrained enclosure typical of micro-inverter form factors mounted behind solar panels.
Recommended
Industrial Automation and CAN Networking
With an integrated CAN interface, the DSPIC33EP64GS804T-I/PT serves as an intelligent control node in factory automation: driving actuators, monitoring analog sensors through its PGA-equipped ADC, and communicating on the plant CAN bus. The 70 MIPS core handles both the real-time control task and protocol processing without an external co-processor, and the industrial temperature grade suits control cabinets. The FuSa (Functional Safety) designation supports deployment in safety-related machinery contexts when combined with Microchip's safety documentation. The 44-pin TQFP balances I/O availability with a manageable 10x10 mm footprint for DIN-rail and distributed I/O boards.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64GS804T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GS804-I/PT | DSPIC33EP64GS804T-E/PT | DSPIC33EP32GS804T-I/PT | DSPIC33EP128GS704T-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 64KB (64K x 8) | 64KB | 64KB | 32KB | 128KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Digital-Power Analog Set (PWM/PGA/Comparators) | Yes (interconnected High-Speed PWM + PGA + comparators) | Yes (GS series) | Yes (GS series) | Yes (GS series) | Yes (GS704 subset - verify count) |
Key Differentiators
- Purpose-built digital power analog subsystem (vs DSPIC33EP64GP504T-E/TL)
- Extended temperature availability in identical footprint (vs DSPIC33EP64GS804T-E/PT)
- Balanced memory density at lowest cost point (vs DSPIC33EP128GS704T-I/PT)
Design Notes
The dsPIC33EP64GS804 operates from a 3.3V rail. In digital power systems the controller usually sits on an isolated or low-noise bias supply separate from the power stage. Decouple VDD with 0.1uF ceramic caps at each supply pin plus bulk capacitance, and keep the analog supply (AVDD) filtered or fed from a ferrite bead off the digital rail to protect ADC accuracy. Estimated: at 70 MIPS, core current is on the order of tens of mA per Microchip family power estimates - size the bias regulator accordingly.
Keep high dv/dt switch nodes of the power stage away from ADC input traces and the ADC reference pins; GaN-based totem-pole legs (as in the TDTTP4000W066C reference design) switch at very high slew rates that capacitively couple into analog traces. Use ground planes, route analog signals differentially where possible, and synchronize ADC sampling to PWM center or edges using the interconnected PWM trigger rather than free-running sampling to avoid switching-noise-corrupted readings.
Do not exceed the -40C to +85C industrial limit of the I-grade part: if ambient near the controller can reach 100C or above (e.g., sealed power supply enclosures), specify the DSPIC33EP64GS804T-E/PT extended-temperature variant instead, which is qualified to +125C in the same 44-TQFP footprint. Also remember the T suffix ships in tape-and-reel minimum quantities - prototype quantities are easier to source as the tray-packaged DSPIC33EP64GS804-I/PT.
Compliance Information
Compliance data not explicitly stated in the provided web data; confirm RoHS/REACH status on the Microchip product page or distributor compliance sheets before ordering.