DSPIC33EP16GS504T-E/PT - 16-bit DSC, 16KB Flash, TQFP-44 | Microchip
MPN: DSPIC33EP16GS504T-E/PT ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33EP16GS504T-E/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and control-oriented architecture of a microcontroller. Within the power-management hierarchy, the DSC sits above a general-purpose MCU for switch-mode power conversion tasks, providing deterministic interrupt latency and dedicated PWM hardware that a standard microcontroller cannot match. The dsPIC33EP GS family is Microchip's SMPS-focused DSC line, purpose-built for digital power supplies.
Key features include 16-bit modified Harvard architecture execution, a high-speed PWM module with complementary outputs, dead-time insertion and fault protection tailored for switched-mode power supplies, a 10-bit high-speed ADC for current- and voltage-loop feedback, and standard serial connectivity. The device is qualified to AEC-Q100 for automotive use and supports Functional Safety (FuSa) development, as listed by distributors.
Technically, the GS504 core delivers 16-bit DSP instruction support with hardware multiply-accumulate, enabling Proportional-Integral compensation loops in software at switching frequencies well above 100 kHz. In-Circuit Serial Programming (ICSP) via MPLAB SNAP allows field programming using two device I/O pins and the reset line.
Typical applications include interleaved power factor correction (Microchip's 350W interleaved PFC reference design targets this family), LLC and flyback converters, digital AC-DC power supplies, automotive power modules, and industrial motor-control front ends.
Design consideration: budget the 2KB SRAM carefully when running multiple control loops with ADC buffering; the 16KB FLASH constrains complex compensation algorithms, so consider 32GS/64GS variants if code growth is expected.
This page synthesizes distributor stock and pricing signals, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP16GS504T-E/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 DSPIC33EP16GS504T-E/PT (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Package, Analog Peripherals, Communication Interfaces.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP16GS504-I/PT
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33EP32GS504-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GS504-E/PT
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$5.61 / Unit
View Datasheet →DSPIC33EP16GS504T-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Flash Program Memory | 16 KB (16K x 8) |
| SRAM | 2 KB |
| Max Core Speed | 60 MIPS (listed up to 70 MIPS by Mouser) |
| Operating Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Package | 44-TQFP (10 x 10 mm, 0.8 mm pitch) |
| Operating Temperature | -40C to +125C (E, extended) |
| Qualification | AEC-Q100, Automotive, Functional Safety (FuSa) |
| Mounting Type | Surface Mount |
| Packaging Suffix | /T (Tape & Reel) |
| PWM | High-speed SMPS PWM module |
| Communication Interfaces | UART, SPI, I2C |
| Programming Interface | ICSP (2-wire) via MPLAB SNAP |
| Family Series | dsPIC33EP 33EP (GS, SMPS-oriented) |
| RoHS Status | Compliant |
DSPIC33EP16GS504T-E/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / ADC positive reference / port B |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / ADC negative reference / port B |
| Pin 4 | AN2/PGD/RB2 — Analog input 2 / In-Circuit Debug data / port B |
| Pin 5 | AN3/PGC/RB3 — Analog input 3 / In-Circuit Debug clock / port B |
| Pin 6 | AN4/RB4 — Analog input 4 / port B |
| Pin 7 | AN5/RB5 — Analog input 5 / port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 11 | VDD — Positive supply (3.0V-3.6V) |
| Pin 12 | RB6 — General purpose I/O / peripheral pin (PPS) |
| Pin 13 | RB7 — General purpose I/O / peripheral pin (PPS) |
| Pin 14 | RB8 — General purpose I/O / peripheral pin (PPS) |
| Pin 15 | RB9 — General purpose I/O / peripheral pin (PPS) |
| Pin 16 | VDD — Positive supply (3.0V-3.6V) |
| Pin 17 | VSS — Ground reference |
| Pin 18 | RB10 — General purpose I/O / peripheral pin (PPS) |
| Pin 19 | RB11 — General purpose I/O / peripheral pin (PPS) |
| Pin 20 | RB12 — General purpose I/O / peripheral pin (PPS) |
| Pin 21 | RB13 — General purpose I/O / peripheral pin (PPS) |
| Pin 22 | RB14 — General purpose I/O / peripheral pin (PPS) |
| Pin 23 | RB15 — General purpose I/O / peripheral pin (PPS) |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply (3.0V-3.6V) |
| Pin 26 | RC0 — General purpose I/O / peripheral pin (PPS) |
| Pin 27 | RC1 — General purpose I/O / peripheral pin (PPS) |
| Pin 28 | RC2 — General purpose I/O / peripheral pin (PPS) |
| Pin 29 | RC3 — General purpose I/O / peripheral pin (PPS) |
| Pin 30 | RC4 — General purpose I/O / peripheral pin (PPS) |
| Pin 31 | RC5 — General purpose I/O / peripheral pin (PPS) |
| Pin 32 | RC6 — General purpose I/O / peripheral pin (PPS) |
| Pin 33 | RC7 — General purpose I/O / peripheral pin (PPS) |
| Pin 34 | RC8 — General purpose I/O / peripheral pin (PPS) |
| Pin 35 | RC9 — General purpose I/O / peripheral pin (PPS) |
| Pin 36 | PWM1L1 — High-speed PWM 1 low-side output 1 |
| Pin 37 | VDD — Positive supply (3.0V-3.6V) |
| Pin 38 | VSS — Ground reference |
| Pin 39 | PWM1H1 — High-speed PWM 1 high-side output 1 |
| Pin 40 | PWM1L2 — High-speed PWM 1 low-side output 2 |
| Pin 41 | PWM1H2 — High-speed PWM 1 high-side output 2 |
| Pin 42 | PWM1L3 — High-speed PWM 1 low-side output 3 |
| Pin 43 | PWM1H3 — High-speed PWM 1 high-side output 3 |
| Pin 44 | FLTA — PWM fault input A |
Typical Applications
DSPIC33EP16GS504T-E/PT is suitable for 6 applications: Interleaved Power Factor Correction, Digital AC-DC Power Supplies, Automotive Power Modules, Industrial Motor Control Front Ends, LED Driver Ballasts and Lighting Power, Embedded Digital Power Development Platforms.
Interleaved Power Factor Correction
Microchip's Interleaved PFC reference design targets the dsPIC33EP GS family and delivers up to 350W from a universal AC input range. The DSPIC33EP16GS504T-E/PT fits this role because its high-speed SMPS PWM module generates phase-shifted complementary outputs with hardware dead-time insertion, while the fast ADC samples inductor current and bus voltage for average-current-mode control at switching frequencies beyond 100 kHz. The 16-bit DSP core executes PI compensation loops with multiply-accumulate instructions deterministically, avoiding the jitter of software-timed control. The -40C to +125C extended grade and AEC-Q100 qualification allow deployment in automotive and industrial front ends. Two interleaved boost legs share one 44-pin TQFP controller, reducing BOM count versus analog-control solutions.
Recommended
Digital AC-DC Power Supplies
Flyback, forward, and LLC AC-DC converters benefit from the DSPIC33EP16GS504T-E/PT's combination of a 60-70 MIPS DSP core and dedicated SMPS PWM hardware. The controller closes voltage and current loops digitally, enabling adaptive burst mode, proprietary startup sequencing, and precise output regulation that analog controllers cannot reconfigure in firmware. The 2KB SRAM accommodates ADC result buffering and loop state variables for dual-loop control, while ICSP programming via MPLAB SNAP lets manufacturers update firmware in production. The 3.0V-3.6V supply range simplifies bias generation from an auxiliary winding. Extended -40C to +125C operation suits sealed adapters and industrial supplies where ambient temperatures inside enclosures exceed +85C regularly.
Recommended
Automotive Power Modules
With AEC-Q100 qualification, Functional Safety (FuSa) support, and the extended E temperature grade, the DSPIC33EP16GS504T-E/PT is positioned for automotive DC-DC converters, LED headlamp drivers, and 48V mild-hybrid subsystems. The high-speed PWM provides cycle-by-cycle current limiting with hardware fault shutdown, a requirement for protecting automotive power stages during load-dump or short-circuit events. The 10x10 mm TQFP withstands the vibration and thermal cycling of under-hood electronics better than larger packages due to compliant lead frames. Designers should implement Microchip's safety libraries and follow the family's functional-safety documentation to satisfy ISO 26262-aligned development flows applicable to the end system.
Recommended
Industrial Motor Control Front Ends
The DSPIC33EP16GS504T-E/PT serves as the power-conversion controller in industrial drives, handling PFC or DC bus stages that feed Microchip's motor-control DSCs. Its 16-bit DSP core runs current-loop compensation at high bandwidth while the SMPS PWM drives half-bridge stages with hardware dead time, keeping switching losses predictable. The 44-pin count leaves sufficient GPIO for gate-driver enable sequencing, fault aggregation, and UART or CAN-adjacent serial links for supervisory communication. In factory environments with ambient temperatures up to +70C inside cabinets, the +125C junction capability provides wide derating margin. Firmware-updatable control parameters enable one PCB platform to serve multiple motor power ratings through configuration.
Recommended
LED Driver Ballasts and Lighting Power
High-power LED luminaires and automotive lighting require constant-current converters with dimming control, a task matched to the DSPIC33EP16GS504T-E/PT's PWM resolution and ADC sampling speed. The SMPS PWM module drives buck or boost LED stages while a second PWM channel generates dimming waveforms free of visible flicker at frequencies above the camera-audibility thresholds. Digital control enables thermal foldback: the ADC reads an NTC sensor and firmware scales output current as temperature rises, extending LED lifetime. The extended -40C to +125C rating covers sealed outdoor luminaires exposed to solar heating, and AEC-Q100 qualification supports automotive exterior lighting modules where quality audits demand automotive-qualified silicon.
Recommended
Embedded Digital Power Development Platforms
The DSPIC33EP16GS504T-E/PT is an excellent learning and prototyping vehicle for digital power engineering because Microchip publishes reference designs, SMPS libraries, and MPLAB X toolchain support for the GS family. Engineers can iterate compensation firmware in minutes using ICSP in-circuit reprogramming through MPLAB SNAP, which needs only two I/O pins plus reset - no socketed parts or external programmers beyond the low-cost SNAP tool. The 44-pin TQFP is hand-solderable for prototype boards and universally available on assembly lines. Its parameter set (16KB FLASH, 2KB SRAM) also disciplines code size early, with a seamless upgrade path to the pin-compatible 32GS504 and 64GS504 when control algorithms grow more complex.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP16GS504T-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS504-I/PT | DSPIC33EP32GS504-E/PT | DSPIC33EP64GS504-E/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Flash Memory | 16 KB | 16 KB | 32 KB | 64 KB |
| Core Speed | 60-70 MIPS | 60-70 MIPS | 60-70 MIPS | 60-70 MIPS |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) |
| Operating Voltage | 3.0 V - 3.6 V | 3.0 V - 3.6 V | 3.0 V - 3.6 V | 3.0 V - 3.6 V |
| PCB Rework Required | - | None - same footprint | None - same footprint | None - same footprint |
Key Differentiators
- Extended temperature range for automotive and sealed power supplies (vs DSPIC33EP16GS504-I/PT)
- Upgrade headroom without PCB rework (vs DSPIC33EP32GS504-E/PT)
- SMPS-optimized peripheral set vs general-purpose MCUs (vs PIC16LF1787-E/ML (site catalog MCU))
Design Notes
Place a 100nF ceramic capacitor at every VDD/VSS pin pair (pins 11/8, 16/17, 25/24, 37/38 on the 44-TQFP) with traces under 5 mm, plus one 4.7uF-10uF bulk capacitor near the package. The 3.0V-3.6V rail must stay within range during PWM transients; in digital power designs the controller rail is often derived from an auxiliary flyback winding, so verify minimum bias voltage at light load before the main converter starts. Estimated: four decoupling capacitors plus local bulk keeps high-frequency supply impedance low enough for 60-70 MIPS core operation.
Use a solid ground plane on layer 2 beneath the 10x10 mm TQFP and return each VSS pin directly with multiple vias. Keep the PWM gate-drive traces (PWM1H/L outputs) short and away from ADC input traces to prevent switching noise coupling into current-sense feedback; the SMPS PWM module's dead-time depends on clean edge timing. Land pattern per Microchip family datasheet: 0.8 mm pitch, 10x10 mm body. Expose no thermal pad - the PT TQFP dissipates heat through the leads, so provide adequate copper on outer layers.
Watch the memory budget: 16KB FLASH and 2KB SRAM fill quickly with floating-point compensation code; use fixed-point math and the DSP multiply-accumulate instructions, and profile code size before committing. The /T tape-and-reel suffix means parts arrive in reels for pick-and-place - hand soldering from reels requires cut-tape handling. Also confirm the temperature grade: the -I/PT variant is limited to +85C ambient-class operation, and substituting it into an E-grade design silently reduces thermal margin. Verify all pin assignments against the latest Microchip datasheet before layout freeze.
Compliance Information
RoHS compliance and lead-free TQFP terminations per JLCPCB and distributor listings. AEC-Q100 automotive qualification and Functional Safety (FuSa) support per Hotenda and Chip In Stock product data. REACH, halogen-free, and conflict-minerals statuses not stated in provided data.
