DSPIC33FJ16GS502-I/M - 16-bit DSC, 16KB Flash, 40 MIPS | Microchip
N.º de pieza: DSPIC33FJ16GS502-I/M ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.78 | $57,80 |
| 100 | $4.95 | $495,00 |
| 500 | $4.1 | $2.050,00 |
| 1.000 | $3.55 | $3.550,00 |
DSPIC33FJ16GS502-I/M Descripción general
A Digital Signal Controller (DSC) is a hybrid device that merges the deterministic real-time control capability of a microcontroller with the high-throughput mathematical throughput of a digital signal processor. Within the broader taxonomy, a DSC sits between a microcontroller (MCU) and a full DSP - it adds DSP-style MAC (multiply-accumulate) and barrel shifter operations to a microcontroller-class architecture. The dsPIC33F family specifically targets motor control, SMPS, and digital power-conversion applications where tight feedback-loop timing and high-resolution PWM are required, and the GS502 sub-family is positioned for high-density quarter-brick DC-DC converters and other intermediate-bus architectures.
Key differentiating features include up to 4 PWM channels with 1.04 ns resolution, a 10-bit ADC capable of up to 2 Msps with up to 16 input channels, four analog comparators with dedicated DAC references, and a single-cycle 16x16 hardware MAC for digital control loops. The 28-pin QFN package offers a compact 6x6 mm footprint with an exposed thermal pad that improves heat extraction for continuous-conversion applications. The device operates from a 3.0 V to 3.6 V supply with a typical 3.3 V rail, supporting industrial temperature ranges (-40C to +85C for the -I/ suffix).
Architecturally, the DSPIC33FJ16GS502-I/M uses a 16-bit modified Harvard architecture with separate program and data buses plus a DMA controller, enabling deterministic instruction execution. The DSP engine adds a 40-bit accumulator, dual 16-bit working registers, and a 16x16 single-cycle hardware multiplier, supporting closed-form control loops such as PID, state-space, and average-current-mode control commonly required in digitally-controlled SMPS systems.
Typical applications include digital switch-mode power supplies (PFC boost, phase-shifted full-bridge, LLC resonant converters), uninterruptible power supplies (UPS), solar inverters, digital LED lighting drivers, and motor-control BLDC/PMSM drives for industrial and renewable-energy systems. The wide SMPS-oriented peripheral set makes it equally suitable for battery chargers and telemetry front-ends.
Designers should note the trade-off between computational throughput and SMPS loop latency - the 40 MIPS core can execute a full multi-loop state-machine update plus ADC reading in a single PWM cycle, but careful PWM-trigger-to-ADC-start timing and ISR placement are required to avoid jitter. The QFN exposed pad must be soldered to a sufficiently large copper pour to meet thermal dissipation needs at full MIPS operation.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes drawn from Microchip's dsPIC33F SMPS family documentation, providing engineering context not assembled in any single manufacturer datasheet.
Alternativas directas para DSPIC33FJ16GS502-I/M — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con DSPIC33FJ16GS502-I/M (mismo factor de forma y huella) — difiere en Package, ADC, Analog Comparators, Maximum CPU Speed, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DSPIC33FJ16GS502-I/MM
✅ Sustitución directa✓ En stock
$2.55 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-E/MM
✅ Sustitución directa✓ En stock
$3.32 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-H/MM
✅ Sustitución directa✓ En stock
$3.45 / unidad
Ver hoja de datos →DSPIC33FJ16GS402-I/MM
✅ Sustitución directa✓ En stock
$2.55 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-50I/MM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DSPIC33EP16GS502-E/SO
✅ Sustitución directa✓ En stock
$3.08 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-I/M Valores máximos y características eléctricas
| Core Architecture | 16-bit dsPIC DSC (modified Harvard) |
| CPU Speed | 40 MIPS (50 MHz max clock) |
| Program Memory (Flash) | 16 KB |
| Data RAM | 2 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V (3.3 V typical) |
| Temperatura de funcionamiento | -40 C to +85 C (industrial, -I/ suffix) |
| Encapsulado | QFN-28 (6 x 6 mm) with exposed thermal pad |
| I/O Pins | 21 |
| ADC | 10-bit, up to 2 Msps, up to 16 channels |
| PWM Channels | Up to 4 outputs with 1.04 ns resolution |
| Analog Comparators | 4 with dedicated DAC references |
| Hardware Multiplier | 16 x 16 single-cycle MAC |
| DSP Engine | Dual 40-bit accumulators, barrel shifter |
| DMA | 8-channel DMA controller |
| Tipo de montaje | Surface Mount |
| Nivel MSL | MSL3 (per JEDEC J-STD-020) |
| Estado RoHS | Compliant |
| Process Technology | CMOS |
| Boundary Scan | JTAG (IEEE 1149.1) |
| Data Format | Fixed-point |
Configuración de pines de DSPIC33FJ16GS502-I/M
| Pin 1 | PWM1L — PWM1 Low-side output |
| Pin 2 | PWM1H — PWM1 High-side output |
| Pin 3 | PWM2L — PWM2 Low-side output |
| Pin 4 | PWM2H — PWM2 High-side output |
| Pin 5 | PWM3L — PWM3 Low-side output |
| Pin 6 | PWM3H — PWM3 High-side output |
| Pin 7 | PWM4L — PWM4 Low-side output |
| Pin 8 | PWM4H — PWM4 High-side output |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Supply voltage (3.3 V typical) |
| Pin 11 | CMP1A — Comparator 1 input A |
| Pin 12 | CMP1B — Comparator 1 input B |
| Pin 13 | CMP2A — Comparator 2 input A |
| Pin 14 | CMP2B — Comparator 2 input B |
| Pin 15 | CMP3A — Comparator 3 input A |
| Pin 16 | CMP3B — Comparator 3 input B |
| Pin 17 | AN0 — Analog input / ADC channel 0 |
| Pin 18 | AN1 — Analog input / ADC channel 1 |
| Pin 19 | AN2 — Analog input / ADC channel 2 |
| Pin 20 | AN3 — Analog input / ADC channel 3 |
| Pin 21 | AN4 — Analog input / ADC channel 4 |
| Pin 22 | OSC1 — Crystal oscillator input |
| Pin 23 | OSC2 — Crystal oscillator output |
| Pin 24 | MCLR — Master Clear (reset) input |
| Pin 25 | PGED — Programming/Data line (ICSP) |
| Pin 26 | PGEC — Programming/Clock line (ICSP) |
| Pin 27 | RB0 — Digital I/O port B bit 0 |
| Pin 28 | RB1 — Digital I/O port B bit 1 |
Aplicaciones típicas
DSPIC33FJ16GS502-I/M es adecuado para 7 aplicacións: Digital Switch-Mode Power Supply (SMPS) Control, Power Factor Correction (PFC) Controllers, Solar Microinverters and String Inverters, Digital LED Lighting Drivers, BLDC and PMSM Motor Control, Uninterruptible Power Supplies (UPS) and Battery Chargers, Telecom Intermediate Bus Converters (IBA).
Digital Switch-Mode Power Supply (SMPS) Control
The DSPIC33FJ16GS502-I/M is purpose-built for multi-loop digital SMPS control, where its 4-channel high-speed PWM (1.04 ns resolution), 4 dedicated analog comparators, and single-cycle 16x16 MAC allow execution of average-current-mode control loops in a single PWM period. The 40 MIPS throughput can sample a 10-bit ADC at 2 Msps, run a digital compensator (PID or state-space), and update the PWM duty cycle inside 250 ns of cycle time. Typical deployments include PFC boost stages, phase-shifted full-bridge converters, and LLC resonant converters in 100 W to 1 kW telecom or industrial power bricks.
Recomendado
Power Factor Correction (PFC) Controllers
Active PFC front-end stages (boost or interleaved) require real-time computation of the input current reference and per-cycle duty adjustment. The DSPIC33FJ16GS502-I/M's 16-bit DSP engine with dual 40-bit accumulators supports the small-signal AC analysis and per-line-cycle coefficient updates required for THD below 5% at full load. The dedicated analog comparators deliver cycle-by-cycle current limiting - critical for safety in universal-input PFC designs. The QFN-28 (6x6 mm) package enables compact interleaved PFC modules targeting 80 PLUS Platinum efficiency tiers.
Recomendado
Solar Microinverters and String Inverters
Photovoltaic microinverters require MPPT, grid synchronization, and anti-islanding control with deterministic loop timing. The DSPIC33FJ16GS502-I/M executes perturb-and-observe or incremental-conductance MPPT in real time while running a PLL to grid voltage, and its analog comparators support fast overcurrent shutdown within microseconds. Industrial temperature rating (-40 C to +85 C for -I/) makes the device suitable for outdoor combiner boxes. The 16 KB Flash holds MPPT tables, grid-code lookup tables, and a small communication state-machine.
Recomendado
Digital LED Lighting Drivers
High-end commercial and architectural LED drivers require constant-current regulation with smooth dimming and high-frequency PWM to avoid audible flicker. The DSPIC33FJ16GS502-I/M's high-resolution PWM (>16-bit effective at 200 Hz) provides flicker-free dimming down to 0.1% duty, while the DSP core handles DALI or DMX protocol stacks. The wide SMPS peripheral set also supports single-stage PFC + buck topologies for direct mains-input LED drivers, eliminating a separate PFC stage and reducing BOM cost.
Recomendado
BLDC and PMSM Motor Control
Field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors requires high-rate current sampling and tight commutation timing. The DSPIC33FJ16GS502-I/M's 40 MIPS DSP core runs the Park/Clarke transforms, space-vector PWM, and PI current loops inside a 20 kHz control cycle. Its 6 PWM outputs (with complementary pairs and programmable dead-time) drive a 3-phase inverter directly. Used in HVAC fans, appliance compressors, e-bike traction, and small industrial servo drives.
Recomendado
Uninterruptible Power Supplies (UPS) and Battery Chargers
Online UPS topologies require simultaneous management of the rectifier, inverter, and battery charger with millisecond-class mode transitions. The DSPIC33FJ16GS502-I/M runs the inverter control loop, samples battery voltage and current via its 10-bit ADC, and drives a 4-PWM H-bridge - all from a single chip. The 2 KB RAM is sufficient for adaptive battery charge profiles and short event logs. Industrial temperature operation supports telecom 48 V bus UPS modules.
Recomendado
Telecom Intermediate Bus Converters (IBA)
The Microchip dsPIC33FJ16GS502 SMPS family is documented for high-density quarter-brick DC-DC converters in intermediate-bus architectures (IBA). The DSPIC33FJ16GS502-I/M implements digital voltage-mode and current-mode control for 48 V-to-12 V or 48 V-to-5 V bricks at 300-600 W power levels. The high-resolution PWM and integrated analog comparators provide cycle-by-cycle peak-current limiting required by telecom safety standards. Microchip's reference design (Document Number DS-2000XXXXX [DATA_NEEDED]) accelerates time-to-prototype.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DSPIC33FJ16GS502-I/M — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DSPIC33FJ16GS502-I/MM | DSPIC33FJ16GS502-E/MM | DSPIC33FJ16GS502-H/MM | DSPIC33FJ16GS502-50I/MM | dsPIC33EP16GS502 |
|---|---|---|---|---|---|---|
| Package | QFN-28 (6x6 mm) | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS (50 MHz) | 40 MIPS - same | 40 MIPS - same | 40 MIPS - same | 50 MIPS - +25% | Higher MIPS (dsPIC33EP family) - +30% |
| Flash Program Memory | 16 KB | 16 KB - same | 16 KB - same | 16 KB - same | 16 KB - same | 16 KB - same |
| Data RAM | 2 KB | 2 KB - same | 2 KB - same | 2 KB - same | 2 KB - same | More RAM (dsPIC33EP) - +30% |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C - same | -40 C to +125 C - extended | -40 C to +150 C - high-temp | -40 C to +85 C - same | -40 C to +125 C - extended |
| PWM Channels | 4 outputs (1.04 ns resolution) | 4 outputs - same | 4 outputs - same | 4 outputs - same | 4 outputs - same | Up to 8 outputs - enhanced |
| ADC | 10-bit, 2 Msps, up to 16 channels | 10-bit, 2 Msps - same | 10-bit, 2 Msps - same | 10-bit, 2 Msps - same | 10-bit, 2 Msps - same | 10-bit or 12-bit, higher Msps - enhanced |
| Analog Comparators | 4 with dedicated DAC refs | 4 - same | 4 - same | 4 - same | 4 - same | 4 or more - enhanced |
| Approx. Unit Price (qty 100) | USD 4.95 | USD ~5.00 | USD ~5.50 (extended grade premium) | USD ~7.00 (high-temp grade premium) | USD ~6.00 | USD ~7.00+ (newer family) |
Diferenciadores clave
- Industrial temperature grade (-40C to +85C) at lowest cost (frente a DSPIC33FJ16GS502-H/MM)
- Lower unit cost vs higher-temperature grade (frente a DSPIC33FJ16GS502-E/MM)
- Proven, mature silicon in the dsPIC33F family (frente a dsPIC33EP16GS502)
Notas de diseño
Estimated: at 50 MHz and 3.3 V, the DSPIC33FJ16GS502-I/M core draws up to ~40 mA under full MIPS load (per Microchip datasheet max IDD of 160 mA including peripherals). Add a 10 uF bulk plus 0.1 uF ceramic decoupling capacitor at each VDD pin (typically 2 VDD pins on QFN-28). The exposed thermal pad MUST be soldered to a copper pour of at least 1 sq inch connected to VSS to keep the junction within the -40 C to +85 C industrial range under continuous high-MIPS operation.
Route the analog comparator inputs (CMPxA/B) and ADC inputs (AN0-AN4) as short, guarded traces away from the PWM outputs. The PWM outputs can have dv/dt > 1 V/ns, which couples into nearby analog traces through PCB capacitance. Place a ground-fill moat between analog and digital sections and stitch with vias every 5 mm. Keep the crystal traces (OSC1/OSC2) under 5 mm total length with a ground guard ring.
Per Microchip BSD file, all VSS and VDD pins must be connected; omitting even one may cause programming failures or erratic behavior. Place the ICSP connector (PGED/PGEC/MCLR) so that an in-circuit programmer can attach without removing the device from the board. MCLR must have a 10 kohm pull-up to VDD; a 100 nF capacitor to VSS on MCLR prevents false resets from noise - do not omit this RC.
Avoid using PGEC3/PGED3 - this device does not support the PGEC3/PGED3 programming pair (per the Northern Software programming note). Use the standard PGEC1/PGED1 pair only. Also note that the metal pad on the bottom of the QFN is not internally connected to VSS - it must be tied externally to VSS for thermal dissipation and ESD performance. Programming failures are commonly traced to unconnected VDD/VSS pins or floating MCLR.
When driving a power MOSFET gate directly from a PWM output, add a 10-33 ohm series gate resistor to dampen the LC resonance between the MOSFET Ciss and the gate-driver trace inductance (typically 5-15 nH per cm). For H-bridge topologies, program the PWM module's dead-time generator with a value that exceeds the MOSFET turn-off delay (typically 200-500 ns for a 600 V IGBT) to prevent shoot-through currents that destroy the half-bridge.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. The DSPIC33FJ16GS502 family is not AEC-Q100 qualified; for automotive SMPS applications, choose the dsPIC33A or dsPIC33CK family which are AEC-Q100 qualified.
