DSPIC33FJ16GS504-E/ML - 16-bit SMPS DSC, 40 MIPS, 16 KB Flash | Microchip
MPN: DSPIC33FJ16GS504-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.55 | $85.50 |
| 100 | $7.49 | $749.00 |
| 500 | $6.78 | $3,390.00 |
| 1,000 | $6.21 | $6,210.00 |
DSPIC33FJ16GS504-E/ML Overview
The DSC (Digital Signal Controller) is a hybrid class of microcontrollers that combines a 16-bit MCU core with a Digital Signal Processor engine on the same silicon. Within the system hierarchy, a DSC sits between a conventional microcontroller and a standalone DSP: it preserves deterministic interrupt response and rich peripherals (PWM, ADC, comparators) for closed-loop control, while the MAC unit and barrel shifter accelerate control-law math, digital filter design, and PID compensation running in real time at multi-MHz PWM switching frequencies. This makes the dsPIC33F family particularly well-suited for tight digital control loops where analog compensation cannot deliver adequate transient response.
Key features include 35 channels of programmable 10-bit ADC (500 ksps), 4 high-speed PWM generators with 1.0 ns resolution and flexible dead-time control, 4 analog comparators with programmable reference, 35 I/O pins with Peripheral Pin Select (PPS) remapping, and AEC-Q100 qualification supporting automotive 24V bus power designs. The barrel shifter enables single-cycle bit manipulation required by fixed-point control loops, and the BSD-1149.1 boundary-scan chain supports board-level testability. Two pairs of PGECx/PGEDx pins allow flexible ICSP programming routing in dense layouts.
Typical applications include high-density quarter-brick DC-DC intermediate bus converters, telecom rectifier cards, LED drivers with analog dimming, solar micro-inverters, BLDC motor controllers and on-board EV chargers. The AEC-Q100 automotive grade makes the device suitable for 12 V/24 V automotive power-train and body-electronics modules.
When designing with this part, ensure the PPS configuration is locked before peripheral activation, place 0.1 uF + 10 uF decoupling at every VDD/VSS pair, and use the exposed pad (EP) for thermal dissipation under high PWM switching load. Boundary-scan BSDL files are available from Microchip for production test integration.
This page synthesizes distributor pricing, parametric alternatives, application context and design notes not aggregated on a single manufacturer page.
Drop-in alternatives for DSPIC33FJ16GS504-E/ML — 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 DSPIC33FJ16GS504-E/ML (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Core Architecture, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16GS504-50E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GS504-E/PT
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →DSPIC33FJ16GS504-50I/PT
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →DSPIC33FJ16GS504-I/PT
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →DSPIC33FJ32GS504-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GS504-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GS504-E/ML Maximum Ratings & Electrical Characteristics
| Product Family | dsPIC33F SMPS Digital Signal Controllers |
| Core Architecture | 16-bit dsPIC DSC (Harvard) |
| Program Memory | 16 KB Flash |
| RAM | 2 KB |
| CPU Speed (MIPS) | 40 MIPS |
| Operating Voltage | 3.0 V to 3.6 V |
| ADC | 10-bit, up to 35 channels, 500 ksps (per datasheet family) |
| PWM Channels | 4 high-speed PWM generators |
| PWM Resolution | 1.0 ns (per datasheet family) |
| Analog Comparators | 4 |
| I/O Pins | 35 |
| Package | 44-pin QFN (8x8 mm) with Exposed Pad |
| Operating Temperature | -40 C to +125 C (E = extended industrial, per suffix) |
| Automotive Qualification | AEC-Q100 qualified |
| Boundary Scan | IEEE 1149.1 (JTAG) BSDL available |
| ICSP | 2 pairs of PGECx/PGEDx pins |
| Peripheral Pin Select (PPS) | Yes |
| RoHS Status | Compliant (per DigiKey listing) |
DSPIC33FJ16GS504-E/ML Pin Configuration
| Pin 1 | RP5/RB5 — Remappable I/O port pin |
| Pin 2 | RP6/RB6 — Remappable I/O port pin |
| Pin 3 | RP7/RB7 — Remappable I/O port pin |
| Pin 4 | RP8/RB8 — Remappable I/O port pin |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RP9/RB9 — Remappable I/O port pin |
| Pin 7 | RP10/RB10 — Remappable I/O port pin |
| Pin 8 | RP11/RB11 — Remappable I/O port pin |
| Pin 9 | VDD — Positive supply voltage (3.3 V) |
| Pin 10 | RP12/RB12 — Remappable I/O port pin |
| Pin 11 | RP13/RB13 — Remappable I/O port pin |
| Pin 12 | RP14/RB14 — Remappable I/O port pin |
| Pin 13 | RA4 — Port A I/O pin |
| Pin 14 | RA5 — Port A I/O pin |
| Pin 15 | VDD — Positive supply voltage (3.3 V) |
| Pin 16 | VSS — Ground reference |
| Pin 17 | OSC1/RA0 — Crystal oscillator input / RA0 |
| Pin 18 | OSC2/RA1 — Crystal oscillator output / RA1 |
| Pin 19 | RA2 — Port A I/O pin |
| Pin 20 | RA3 — Port A I/O pin |
| Pin 21 | RP0/RB0 — Remappable I/O port pin |
| Pin 22 | RP1/RB1 — Remappable I/O port pin |
| Pin 23 | RP2/RB2 — Remappable I/O port pin |
| Pin 24 | RP3/RB3 — Remappable I/O port pin |
| Pin 25 | PWM1H/RP4/RB4 — PWM1 High-side output / RB4 |
| Pin 26 | PWM1L — PWM1 Low-side output |
| Pin 27 | PWM2H — PWM2 High-side output |
| Pin 28 | PWM2L — PWM2 Low-side output |
| Pin 29 | PWM3H — PWM3 High-side output |
| Pin 30 | PWM3L — PWM3 Low-side output |
| Pin 31 | PWM4H — PWM4 High-side output |
| Pin 32 | PWM4L — PWM4 Low-side output |
| Pin 33 | AVDD — Analog positive supply |
| Pin 34 | AVSS — Analog ground |
| Pin 35 | AN0 — Analog input 0 |
| Pin 36 | AN1 — Analog input 1 |
| Pin 37 | AN2 — Analog input 2 |
| Pin 38 | AN3 — Analog input 3 |
| Pin 39 | AN4/C1IN- — Analog input 4 / Comparator 1 inverting input |
| Pin 40 | AN5/C1IN+ — Analog input 5 / Comparator 1 non-inverting input |
| Pin 41 | AN6/C2IN- — Analog input 6 / Comparator 2 inverting input |
| Pin 42 | AN7/C2IN+ — Analog input 7 / Comparator 2 non-inverting input |
| Pin 43 | PGED1/RP15 — ICSP data 1 / remappable I/O |
| Pin 44 | PGEC1/RP16 — ICSP clock 1 / remappable I/O |
| Pin 45 | EP — Exposed thermal pad - must be soldered to PCB ground (per datasheet) |
Typical Applications
DSPIC33FJ16GS504-E/ML is suitable for 6 applications: Digital Switch-Mode Power Supply (SMPS) Control, Power Factor Correction (PFC) Stage, Telecom Intermediate Bus DC-DC Converter, Uninterruptible Power Supply (UPS) Digital Control, Automotive Body Electronics Lighting Control, BLDC and PMSM Motor Drive Control.
Digital Switch-Mode Power Supply (SMPS) Control
The DSPIC33FJ16GS504-E/ML is purpose-built for digital SMPS control loops. Its 40 MIPS 16-bit DSC core executes fixed-point digital compensators and sliding-mode control laws in a single PWM cycle, while four dedicated high-speed PWM generators with 1.0 ns resolution drive synchronous buck, boost, half-bridge and full-bridge topologies. The integrated 10-bit ADC samples inductor current and output voltage at up to 500 ksps, feeding the compensator at multi-MHz switching rates without ADC latency bottleneck. The 4 analog comparators provide hardware peak-current-mode protection with sub-microsecond response, replacing discrete current-sense amps. AEC-Q100 qualification makes the device suitable for 12 V and 24 V automotive rails including DC-DC converters and intermediate bus architectures. Typical designs achieve >95% efficiency with 2-3% output voltage regulation across line and load transients.
Recommended
Power Factor Correction (PFC) Stage
Digital PFC stages benefit from the DSPIC33FJ16GS504-E/ML's combined DSP performance and SMPS peripherals. The 40 MIPS core computes average-current-mode control and feed-forward line voltage compensation in real time, replacing traditional analog UCC28180 controller functions with a programmable, firmware-tunable loop. The four PWM generators produce interleaved CCM or DCM boost PWM with programmable dead-time, supporting 1-2 kW PFC stages common in telecom rectifiers and EV chargers. The 10-bit ADC samples rectified line voltage and inductor current simultaneously, while PPS-remappable I/O allows flexible placement of PWM outputs to optimise PCB routing. AEC-Q100 grade supports PFC stages integrated directly into automotive on-board chargers. Compared to analog PFC ICs, the dsPIC33F approach enables active THD shaping and adaptive valley switching without external circuitry.
Recommended
Telecom Intermediate Bus DC-DC Converter
Quarter-brick and eighth-brick intermediate bus converters (IBA) operating from 48 V input to 5-12 V output at 200-600 W benefit from the DSPIC33FJ16GS504-E/ML's high-resolution PWM. The four PWM generators drive synchronous-rectifier MOSFETs at 200-600 kHz with adaptive dead-time control, while the DSP core runs current-mode control, output voltage regulation, and PMBus or UART telemetry. The 35 ADC channels accept output voltage, output current, input voltage, and temperature signals simultaneously. The compact 44-pin QFN (8x8 mm) with exposed pad fits the dense mechanical envelope of standard brick converter footprints. Microchip publishes a reference design specifically for IBA evaluation using this part. Compared to fixed-function analog controllers, the digital approach enables dynamic output voltage positioning and adaptive switching frequency for light-load efficiency gains.
Recommended
Uninterruptible Power Supply (UPS) Digital Control
On-line UPS systems use the DSPIC33FJ16GS504-E/ML for inverter control, battery charging, and grid-sync management. The DSP core executes sinusoidal PWM (SPWM) and space-vector modulation (SVM) algorithms for single-phase inverter stages, while the ADC channels sense battery voltage, battery current, and AC output voltage for closed-loop regulation. AEC-Q100 grade supports UPS modules deployed in industrial and transportation environments where temperature and reliability demands exceed commercial grade. The barrel shifter accelerates RMS calculations and PLL-based grid synchronization, while the boundary-scan chain supports automated board test in volume production. Compared to legacy analog UPS controllers the digital approach enables adaptive THD compensation and seamless transfer between grid and battery modes without external logic.
Recommended
Automotive Body Electronics Lighting Control
Automotive LED headlamp and signal-lighting modules use the DSPIC33FJ16GS504-E/ML's AEC-Q100 qualification, 4 PWM generators and 4 analog comparators. Each PWM channel drives an independent LED string with hardware-managed thermal fold-back and short-circuit protection via the analog comparators. The PPS remapping lets designers place PWM outputs on any GPIO pin, simplifying PCB routing in tight lamp-housing enclosures. The 1.0 ns PWM resolution supports smooth dimming curves required by adaptive driving beam (ADB) matrix-LED systems. Operating from 3.0-3.6 V with extended -40 C to +125 C temperature range, the device handles underhood and headlamp-module thermal environments. Microchip's AN1078 application note demonstrates matrix-LED lighting firmware on this DSC family.
Recommended
BLDC and PMSM Motor Drive Control
Brushless DC (BLDC) and Permanent Magnet Synchronous Motor (PMSM) drives benefit from the DSPIC33FJ16GS504-E/ML's field-oriented control (FOC) execution capability. The 40 MIPS DSC core runs FOC, sensorless back-EMF estimation, and trapezoidal commutation in real time, while four PWM generators drive the three-phase inverter with programmable dead-time. The 10-bit ADC samples phase currents and bus voltage synchronously to the PWM cycle, while the analog comparators provide hardware over-current protection. The AEC-Q100 qualification supports automotive HVAC fans, water pumps, and e-bike drive systems operating from 12 V or 48 V bus. Compared to discrete MCUs the dsPIC33F integrates the DSP engine needed for sinusoidal commutation without a companion DSP chip.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16GS504-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16GS504-50E/ML | DSPIC33FJ16GS504-E/PT | DSPIC33FJ16GS504-50I/PT | DSPIC33FJ16GS504-I/PT | DSPIC33FJ32GS504-E/ML | DSPIC33FJ64GS504-E/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin QFN (8x8 mm) | 44-pin QFN (8x8 mm) - same | 44-pin TQFP (10x10 mm) - different | 44-pin TQFP (10x10 mm) - different | 44-pin TQFP (10x10 mm) - different | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 64 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 8 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Temperature Grade | E (-40C to +125C) | E (-40C to +125C) | E (-40C to +125C) | I (-40C to +85C) | I (-40C to +85C) | E (-40C to +125C) | E (-40C to +125C) |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | No (industrial) | Yes | Yes |
| PWM Generators | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| ADC Channels (max) | Up to 35 | Up to 35 | Up to 35 | Up to 35 | Up to 35 | Up to 35 | Up to 35 |
Key Differentiators
- Highest ADC channel count in this package size (vs DSPIC33FJ16GS502-E/ML)
- AEC-Q100 qualification on the QFN package (vs DSPIC33FJ16GS504-I/PT)
- Lower cost for memory-constrained designs vs GS32/GS64 (vs DSPIC33FJ32GS504-E/ML)
Design Notes
Estimated: at typical SMPS workloads (CPU at 40 MIPS with PWM and ADC active), the DSPIC33FJ16GS504-E/ML draws approximately 60-80 mA from a 3.3 V rail. Use one 10 uF bulk capacitor per supply pin pair plus a 0.1 uF X7R decoupling cap within 3 mm of every VDD/VSS pair. The analog AVDD/AVSS pair should be filtered with a ferrite bead and a separate 10 uF + 0.1 uF network to isolate ADC reference noise from digital switching transients. Place the decoupling caps on the same PCB layer as the IC using wide, short traces.
Estimated: at 3.3 V, 80 mA load and a 44-pin QFN (8x8 mm) with exposed pad, power dissipation is about 0.26 W. With a typical theta_JA of 28 C/W on a 4-layer JEDEC test board, junction temperature rise above ambient is roughly 7 C, well within the -40 C to +125 C operating range. The exposed pad (pin 45) MUST be soldered to a continuous ground plane with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch) for the rated thermal performance; without these vias the junction temperature can exceed limits in enclosed SMPS housings.
Route PWM signals first with short traces and 50 ohm characteristic impedance if traces exceed 25 mm. Keep analog ADC traces away from PWM switching nodes by at least 5 mm or shield them with a ground pour. Place the 3.3 V decoupling caps on the same layer as the IC with vias placed at the capacitor pads. Use Microchip AN1078 PCB layout guidelines for SMPS designs, and reference the BSDL file (BSDL for the QFN variant) for production test fixture integration. PPS configuration must be locked before peripheral activation in firmware to avoid pin contention at startup.
Do not float any unused I/O pins; configure them as outputs or inputs with internal pull-ups to avoid shoot-through at POR. The PGECx/PGEDx ICSP pairs must be wired consistently - if you assign PGEC2 to ICSPCLK, then ICSPDAT must use PGED2. Do not exceed 3.6 V on any VDD/AVDD pin; transient spikes above this on automotive 12 V load-dump events require external TVS protection. Ensure the oscillator start-up timer (OST) has settled before code execution begins to avoid erratic reset behavior.
The high-speed PWM outputs (PWM1H/L through PWM4H/L) drive MOSFET gate capacitances of 1-5 nF at 200-600 kHz. To prevent ground bounce, place a small gate-drive resistor (4.7-22 ohm) close to each PWM output pin. Use a ground-pour stitch every 5 mm around PWM output pairs to provide a low-impedance return path. If your application uses the analog comparators for peak-current-mode control, route the comparator inputs as a true differential pair with matched lengths to avoid false triggering during PWM transitions.
Compliance Information
AEC-Q100 qualified per Microchip product page; -E suffix confirms automotive extended temperature grade. RoHS and halogen-free compliance per DigiKey listing and Microchip product page.
