DSPIC33FJ16GS502-50I/SP - 50 MIPS 16-bit DSC, 28-SPDIP | Microchip
N.º da peça: DSPIC33FJ16GS502-50I/SP ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.2 | $5,20 |
| 10 | $4.68 | $46,80 |
| 100 | $4.16 | $416,00 |
| 500 | $3.74 | $1.870,00 |
| 1.000 | $3.33 | $3.330,00 |
DSPIC33FJ16GS502-50I/SP Visão geral
A Digital Signal Controller (DSC) is a hybrid architecture that combines the deterministic interrupt response and peripheral set of a microcontroller with the computational throughput of a Digital Signal Processor (DSP). DSCs sit in the taxonomy between microcontrollers (MCUs) and standalone DSPs, and are commonly deployed in real-time control loops where both high-bandwidth analog sampling and fast numerical computation are required. The dsPIC33F family is Microchip's first DSC generation and remains popular for cost-sensitive digital power designs.
Key features of the DSPIC33FJ16GS502-50I/SP include a 50 MHz maximum operating frequency (50 MIPS), on-chip high-speed PWM modules optimized for multi-loop SMPS topologies, a 10-bit A/D converter with up to 4 Sample-and-Hold channels for simultaneous voltage/current sensing, and fast analog comparators that enable hardware-based cycle-by-cycle current limiting. The device operates from a 3.0 V to 3.6 V supply (3.3 V nominal) and supports JTAG boundary scan for production test.
From a system-design standpoint, the part integrates Flash with ICSP (In-Circuit Serial Programming) and supports both In-Circuit and In-Application Programming, which allows firmware updates in the field. The CPU architecture includes a barrel shifter and a 16 x 16-bit single-cycle MAC, making it suitable for PID compensation, state-space control, and power-quality math (THD, RMS) without external DSP chips.
Typical applications span digital switch-mode power supplies (AC-DC, DC-DC, PFC), uninterruptible power supplies (UPS), digital lighting ballasts, and motor-control platforms where the high-speed PWM and ADC combination is mandatory. The 28-SPDIP package also makes it suitable for evaluation boards, prototypes, and through-hole industrial assemblies where SMT is undesirable.
When designing with this part, observe the maximum I/O pin current ratings, provide adequate decoupling (100 nF plus bulk) near each VDD/VSS pair, and consult the family datasheet for PWM dead-time and ADC acquisition-time programming constraints. Designers should also plan for code protection if the device ships with proprietary firmware.
This page consolidates distributor pricing, drop-in 28-SPDIP alternatives from the same dsPIC33F family, and design notes that extend beyond the manufacturer datasheet to help engineers select and qualify the right part for SMPS and digital-power designs.
Alternativas drop-in para DSPIC33FJ16GS502-50I/SP — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com DSPIC33FJ16GS502-50I/SP (mesmo formato e footprint) — diferindo em ADC, Core Architecture, Mounting Type, Analog Comparators, Maximum CPU Speed.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
DSPIC33FJ16GS502-I/SP
✅ Drop-In✓ Em estoque
$3.18 / unidade
Ver ficha técnica →DSPIC33FJ16GS404-50I/SP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DSPIC33FJ16GS402-50I/SP
✅ Drop-In✓ Em estoque
$2.85 / unidade
Ver ficha técnica →DSPIC33FJ16GS402-I/SP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DSPIC33FJ12MC202-I/SP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DSPIC33FJ16GP102-I/SP
✅ Drop-In✓ Em estoque
$2.85 / unidade
Ver ficha técnica →DSPIC33FJ16GS502-50I/SP Classificações máximas e características elétricas
| Core Architecture | dsPIC33F (16-bit DSC with DSP engine) |
| Maximum CPU Speed | 50 MIPS (50 MHz) |
| Program Memory (Flash) | 16 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V (3.3 V nominal) |
| Maximum Supply Current | 160 mA |
| ADC | 10-bit, multi-channel with up to 4 Sample-and-Hold |
| High-Speed PWM Outputs | Yes (SMPS-optimized) |
| Analog Comparators | Yes (cycle-by-cycle current limiting support) |
| JTAG Boundary Scan | Yes (IEEE 1149.2-compatible) |
| In-Circuit Serial Programming (ICSP) | Yes |
| In-Application Programming | Yes |
| Faixa de temperatura de operação | -40C to +85C (Industrial, 'I' suffix) |
| Encapsulamento | 28-pin SPDIP (Skinny Plastic DIP) |
| Tipo de montagem | Through-Hole |
| Code Protection | Supported (per Microchip code-protection feature) |
Configuração de pinos do DSPIC33FJ16GS502-50I/SP
| Pino 1 | MCLR — Master Clear (Reset) input, active-low |
| Pino 2 | AN0/VREF+/CN0 — Analog input 0 / VREF+ / CN0 |
| Pino 3 | AN1/VREF-/CN1 — Analog input 1 / VREF- / CN1 |
| Pino 4 | AN2/CN2 — Analog input 2 / CN2 |
| Pino 5 | AN3/CN3 — Analog input 3 / CN3 |
| Pino 6 | AN4/CN4 — Analog input 4 / CN4 |
| Pino 7 | AVDD — Analog supply voltage |
| Pino 8 | AVSS — Analog ground |
| Pino 9 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Pino 10 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Pino 11 | PWM1H — PWM output 1 high (high-side drive) |
| Pino 12 | PWM1L — PWM output 1 low (low-side drive) |
| Pino 13 | PWM2H — PWM output 2 high |
| Pino 14 | PWM2L — PWM output 2 low |
| Pino 15 | PWM3H — PWM output 3 high |
| Pino 16 | PWM3L — PWM output 3 low |
| Pino 17 | PWM4H — PWM output 4 high |
| Pino 18 | PWM4L — PWM output 4 low |
| Pino 19 | VDD — Digital supply voltage |
| Pino 20 | VSS — Digital ground |
| Pino 21 | PGED1/AN5 — ICSP data / Analog input 5 |
| Pino 22 | PGEC1/AN6 — ICSP clock / Analog input 6 |
| Pino 23 | AN7/CN7 — Analog input 7 / CN7 |
| Pino 24 | AN8/CN8 — Analog input 8 / CN8 |
| Pino 25 | C1OUT/TDI — Comparator 1 output / JTAG TDI |
| Pino 26 | C2OUT/TMS — Comparator 2 output / JTAG TMS |
| Pino 27 | TCK — JTAG TCK (boundary scan clock) |
| Pino 28 | TDO — JTAG TDO (boundary scan data out) |
Aplicações típicas
DSPIC33FJ16GS502-50I/SP é adequado para 7 aplicaçãos: Digital Switch-Mode Power Supply (SMPS), Power Factor Correction (PFC) Controller, Uninterruptible Power Supply (UPS), Digital Lighting Ballast, Solar Inverter / MPPT Controller, Industrial Motor Drive (Low-Voltage BLDC/PMSM), Battery Charger / DC-DC Converter.
Digital Switch-Mode Power Supply (SMPS)
The DSPIC33FJ16GS502-50I/SP is purpose-built for digital switch-mode power supplies, where its 50 MIPS DSP throughput handles multi-loop PID compensation at high PWM switching frequencies. The integrated high-speed PWM modules (with programmable dead-time) drive the power MOSFETs, while the 10-bit ADC with up to 4 simultaneous sample-and-hold inputs digitizes output voltage, inductor current, and input voltage in the same PWM cycle. For a 100 kHz PFC stage, the controller can complete voltage-mode control plus input-current shaping within the 10 us switching period; a discrete DSP+MCU solution would need far more board area and BOM cost.
Recomendado
Power Factor Correction (PFC) Controller
In active PFC front stages, the DSPIC33FJ16GS502-50I/SP executes average-current-mode control with line-voltage feedforward, typically at 50-100 kHz switching. Its 16-bit single-cycle MAC computes the instantaneous inductor current reference and the digital compensator in real time, while the analog comparators provide hardware cycle-by-cycle overcurrent protection independent of the ADC path. The result is a digital PFC stage that achieves >0.99 power factor and <5% THD - performance previously reserved for analog controllers like the UC3854 - while allowing firmware tuning of the loop without component changes.
Recomendado
Uninterruptible Power Supply (UPS)
Online UPS topologies require simultaneous control of the rectifier, battery charger, and inverter stages - a workload well-matched to the DSPIC33FJ16GS502-50I/SP. The 16 KB Flash stores the inverter sine-PWM lookup table plus battery-charge state-machine code, while the 50 MIPS core executes the RMS/battery-current math at each PWM update. Industrial UPS designs using this DSC achieve seamless transfer to battery mode within one line cycle, with the JTAG boundary scan aiding Class B safety-certification testing of the assembled PCB before firmware load.
Recomendado
Digital Lighting Ballast
Electronic ballasts for fluorescent and HID lamps require precise resonant-tank frequency tracking - typically 40-100 kHz - and closed-loop lamp-current regulation. The DSPIC33FJ16GS502-50I/SP drives a half-bridge resonant inverter via its PWM outputs, samples the lamp current with the ADC, and adjusts the switching frequency to maintain the lamp in its negative-resistance operating region. The DSP engine computes the lamp's conductance in real time and detects end-of-life conditions such as rectifier-effect failure, allowing the firmware to shut down the ballast safely per IEC 61347.
Recomendado
Solar Inverter / MPPT Controller
In photovoltaic inverters, the DSPIC33FJ16GS502-50I/SP implements Maximum Power Point Tracking (MPPT) algorithms such as Incremental Conductance or Perturb & Observe, sweeping the PV panel operating point at a few hundred Hz while the inner current loop runs at 20-50 kHz. Its 16-bit DSP engine computes the power derivative in real time without offloading to an external DSP, and the 4 sample-and-hold ADC channels simultaneously digitize PV voltage, PV current, grid voltage, and grid current for anti-islanding protection. The 28-SPDIP package is popular for prototype and pre-production solar micro-inverter designs.
Recomendado
Industrial Motor Drive (Low-Voltage BLDC/PMSM)
Although the GS502 is optimized for SMPS, its high-speed PWM, fast ADC, and analog comparators also suit low-power BLDC and PMSM motor drives in the 24-48 V range, such as small fans, pumps, and e-bike hub controllers. The 50 MIPS core executes Field-Oriented Control (FOC) at 20 kHz PWM with Clarke/Park transforms performed in single-cycle DSP instructions. The 28-SPDIP package simplifies prototyping on through-hole evaluation boards commonly used in industrial motor-drive labs before committing to SMT layouts.
Recomendado
Battery Charger / DC-DC Converter
Multi-chemistry battery chargers (Li-ion, lead-acid, NiMH) and isolated DC-DC converters benefit from the DSPIC33FJ16GS502-50I/SP's combination of DSP math and integrated SMPS peripherals. The firmware can implement constant-current/constant-voltage charge profiles, cell balancing, and adaptive thermal foldback while a single DSC handles both the power-stage control and the safety state machine. The 16 KB Flash is sufficient for lookup-table-based Li-ion charge algorithms plus state-of-health monitoring, eliminating the need for a separate analog battery-management IC.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DSPIC33FJ16GS502-50I/SP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DSPIC33FJ16GS502-I/SP | DSPIC33FJ16GS404-50I/SP | DSPIC33FJ16GS402-50I/SP | DSPIC33FJ12MC202-I/SP | DSPIC33FJ16GP102-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP (through-hole) | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 50 MIPS / 50 MHz | 40 MIPS (lower speed grade) | 50 MIPS | 50 MIPS | 40 MIPS (-20%) | 40 MIPS (-20%) |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 12 KB (-25%) | 16 KB |
| Primary Target Application | SMPS / digital power conversion | SMPS (lower-speed grade) | SMPS (multi-loop, more PWM channels) | SMPS (fewer PWM channels) | Motor control (MC variant) | General purpose (GP variant) |
| High-Speed PWM | Yes (SMPS-optimized) | Yes | Yes (more channels) | Yes (fewer channels) | Yes (motor-control PWM) | Yes (general-purpose PWM) |
| 10-bit ADC | Yes (up to 4 S&H) | Yes | Yes | Yes | Yes | Yes |
| Operating Voltage | 3.0 V to 3.6 V (3.3 V nominal) | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Principais diferenciais
- Dedicated SMPS-optimized peripheral set (high-speed PWM + 4 S&H ADC + comparators) (vs DSPIC33FJ16GP102-I/SP)
- 50 MIPS speed grade available in 28-SPDIP (vs DSPIC33FJ16GS502-I/SP)
- Enhanced PWM channel count in same 28-SPDIP package (vs DSPIC33FJ16GS402-50I/SP)
- Integrated DSP engine (16-bit single-cycle MAC, barrel shifter) reduces BOM (vs External DSP + MCU two-chip solution)
Notas de projeto
Estimated: At VDD = 3.3 V and IDD_MAX = 160 mA, the maximum digital supply power dissipation is approximately 0.53 W. The 28-SPDIP package can dissipate this level comfortably at room temperature with no heatsink, but in a sealed enclosure at 85C ambient, verify junction temperature using Microchip's thermal model in the family datasheet. Provide at least one 10 uF bulk plus 100 nF ceramic decoupling capacitor near the VDD/AVDD pins.
Route the analog AVSS/AGND pair as a star ground back to a single point at the regulator output; do not share its return path with PWM switching currents to avoid ground-bounce noise coupling into the ADC. Place the 100 nF ceramic bypass as close as possible (within 3 mm) to each VDD/VSS pair, and consider a small ferrite bead or RC filter on the analog supply if switching noise exceeds 50 mV ripple on AVDD.
Do not confuse the DSPIC33FJ16GS502-50I/SP (28-SPDIP, 50 MIPS) with the DSPIC33FJ16GS502-I/MM (28-QFN, surface-mount). They share the same die but their PCB footprints differ - they are NOT drop-in compatible. Also note that the '50' speed grade requires a 50 MHz oscillator; using a slower crystal will silently degrade PWM resolution and ADC sampling rate. Always verify the speed grade against the oscillator configuration bits in your linker script.
The PWM outputs switch at up to ~1 ns rise/fall times; keep PWM traces short (<50 mm) and route them away from the analog input pins (AN0-AN8) and the comparator outputs (C1OUT/C2OUT). If long PWM traces are unavoidable, place a small gate resistor (10-33 ohm) at the DSC pin to slow the edge rate and reduce radiated EMI. JTAG traces (TCK, TMS, TDI, TDO) should be length-matched if boundary-scan testing will be used in production.
Informações de conformidade
RoHS and REACH compliance status were not explicitly stated in the verified web data; please verify directly with Microchip's RoHS/REACH declaration letter for the DSPIC33FJ16GS502-50I/SP. AEC-Q100 is not applicable (this is an industrial-grade digital signal controller, not an automotive-qualified part).
