DSPIC33FJ16GS402-I/SO - 16-bit DSC, 40 MIPS, 16KB Flash SMPS MCU | Microchip
N.º da peça: DSPIC33FJ16GS402-I/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.45 | $5,45 |
| 10 | $5.1 | $51,00 |
| 100 | $4.62 | $462,00 |
| 500 | $4.05 | $2.025,00 |
| 1.000 | $3.55 | $3.550,00 |
DSPIC33FJ16GS402-I/SO Visão geral
A Digital Signal Controller is a hybrid device that combines a microcontroller's deterministic control peripherals with a digital signal processor's mathematical throughput. The dsPIC33F family sits at the hierarchy: DSC -> DSP-enhanced MCU -> microcontroller -> embedded processor. By merging both roles into a single core, designers can sample high-frequency signals, run control loops, and drive power-stage MOSFETs from a single chip, reducing BOM cost and PCB area.
Key features include dedicated high-speed PWM modules with duty-cycle resolution suitable for digital power topologies, on-chip high-speed 10-bit ADCs, dual analog comparators with PWM-level outputs for cycle-by-cycle current limiting, and a 4-channel DMA engine that offloads data movement from the CPU. The device also provides a configurable 8 MHz internal oscillator, JTAG/ICD debugging, and multiple communication peripherals (UART, SPI, I2C) for housekeeping and telemetry.
The 16-bit modified Harvard architecture separates program and data buses and supports single-cycle MAC operations, enabling tightly tuned digital compensator loops. Combined with 16 KB of self-programmable flash and 2 KB of RAM, the controller can host state machines, look-up tables for soft-start and protection curves, and run real-time PID or average-current-mode control without external logic.
Typical applications include AC-to-DC converters, isolated and non-isolated DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), photovoltaic micro-inverters, and digital lighting ballasts. On-board peripherals such as the high-speed PWM and comparator make it drop-in suitable for multi-loop peak-current-mode control.
Designers should evaluate the 28-pin SOIC variant versus the 28-pin QFN (MM) and 28-pin SPDIP (SP) options based on thermal dissipation and assembly process. For designs requiring more PWM channels or additional ADC channels, the larger-pin-count siblings (dsPIC33FJ16GS404, GS502, GS504) maintain software compatibility while offering expanded peripherals.
This page synthesizes distributor stock, drop-in package equivalents, and practical SMPS design notes that are not consolidated in the manufacturer datasheet, giving engineers a faster path to part selection and PCB layout decisions.
Alternativas drop-in para DSPIC33FJ16GS402-I/SO — 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 DSPIC33FJ16GS402-I/SO (mesmo formato e footprint) — diferindo em Analog Comparators, Operating Temperature, Package, ADC, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
DSPIC33FJ16GS402-I/MM
✅ Drop-In✓ Em estoque
$2.55 / unidade
Ver ficha técnica →DSPIC33FJ16GS402-E/SO
✅ Drop-In✓ Em estoque
$3.88 / unidade
Ver ficha técnica →DSPIC33FJ16GS402-H/SP
✅ Drop-In✓ Em estoque
$4.1 / unidade
Ver ficha técnica →DSPIC33FJ16GS402-50I/SP
✅ Drop-In✓ Em estoque
$2.85 / unidade
Ver ficha técnica →DSPIC33FJ16GS404-I/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DSPIC33FJ16GS402-I/SO Classificações máximas e características elétricas
| Core Architecture | 16-bit dsPIC33F DSC (modified Harvard) |
| CPU Speed | 40 MIPS (up to 50 MHz device clock) |
| Program Memory | 16 KB flash |
| Data Memory (RAM) | 2 KB |
| Tensão de alimentação | 3.0 V to 3.6 V |
| Temperatura de operação | -40C to +85C (Industrial, "I") |
| Encapsulamento | 28-pin SOIC (SO), 1.27 mm pitch |
| ADC | 10-bit, multi-channel high-speed ADC |
| Analog Comparators | Dual comparators with PWM output reference |
| DMA Channels | 4-channel DMA |
| Internal Oscillator | 8 MHz internal RC (with PLL) |
| Communication Peripherals | UART, SPI, I2C |
| Debug Interface | JTAG / ICD |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do DSPIC33FJ16GS402-I/SO
| Pino 1 | SDA/RP9/CN21 — I2C data / remappable peripheral / change notification |
| Pino 2 | RP8/CN20/RB8 — Remappable peripheral / CN / Port B |
| Pino 3 | RP7/CN19/RB7 — Remappable peripheral / CN / Port B |
| Pino 4 | RP6/CN18/RB6 — Remappable peripheral / CN / Port B |
| Pino 5 | AN0/RP0/CN4/RB0 — Analog input / remappable / CN / Port B |
| Pino 6 | AN1/RP1/CN5/RB1 — Analog input / remappable / CN / Port B |
| Pino 7 | AN2/RP2/CN6/RB2 — Analog input / remappable / CN / Port B |
| Pino 8 | AN3/RP3/CN7/RB3 — Analog input / remappable / CN / Port B |
| Pino 9 | VSS — Ground reference |
| Pino 10 | PWM1H/RP10/CN22/RB10 — PWM1 high output / remappable / CN / Port B |
| Pino 11 | PWM1L/RP11/CN23/RB11 — PWM1 low output / remappable / CN / Port B |
| Pino 12 | PWM2H/RP12/CN24/RB12 — PWM2 high output / remappable / CN / Port B |
| Pino 13 | PWM2L/RP13/CN25/RB13 — PWM2 low output / remappable / CN / Port B |
| Pino 14 | VCAP — Internal voltage regulator output, decoupling cap |
| Pino 15 | PWM3H/RP14/CN26/RB14 — PWM3 high output / remappable / CN / Port B |
| Pino 16 | PWM3L/RP15/CN27/RB15 — PWM3 low output / remappable / CN / Port B |
| Pino 17 | PWM4H/RP16/CN28/RC0 — PWM4 high output / remappable / CN / Port C |
| Pino 18 | PWM4L/RP17/CN29/RC1 — PWM4 low output / remappable / CN / Port C |
| Pino 19 | MCLR — Master clear reset (active low) |
| Pino 20 | OSC1/RC12 — Crystal oscillator input / Port C |
| Pino 21 | OSC2/RC13 — Crystal oscillator output / Port C |
| Pino 22 | FLTA/RP20/CN52/RC8 — PWM fault input / remappable / CN / Port C |
| Pino 23 | RP21/CN53/RC9 — Remappable peripheral / CN / Port C |
| Pino 24 | RP22/CN54/RC10 — Remappable peripheral / CN / Port C |
| Pino 25 | TDO/RP24/CN55/RC2 — JTAG test data out / remappable / CN / Port C |
| Pino 26 | TCK/RP25/CN56/RC3 — JTAG test clock / remappable / CN / Port C |
| Pino 27 | TMS/RP26/CN57/RC4 — JTAG test mode select / remappable / CN / Port C |
| Pino 28 | VDD — Positive supply (3.0 V to 3.6 V) |
Aplicações típicas
DSPIC33FJ16GS402-I/SO é adequado para 6 aplicaçãos: AC-to-DC Power Converter Control, Isolated DC-to-DC Converter (Quarter-Brick), Power Factor Correction (PFC) Stage, Uninterruptible Power Supply (UPS) Control, Photovoltaic Micro-Inverter, Digital Lighting Ballast.
AC-to-DC Power Converter Control
The DSPIC33FJ16GS402-I/SO fits AC-to-DC converter control because its 40 MIPS dsPIC33F core executes single-cycle MAC operations needed for average-current-mode control loops above 100 kHz. With its 3.0 V to 3.6 V supply and on-chip 10-bit high-speed ADC, the device samples rectified mains voltage and inductor current while generating phase-controlled PWM for the boost PFC stage. The 16 KB flash hosts state machines for soft-start, brown-out, and valley skipping to optimize light-load efficiency.
Recomendado
Isolated DC-to-DC Converter (Quarter-Brick)
For isolated DC-DC converters in intermediate bus architectures, the DSPIC33FJ16GS402-I/SO provides the high-speed PWM resolution required for primary-side peak-current-mode control and secondary-side synchronous rectifier timing. Its dual analog comparators deliver cycle-by-cycle current limiting at switching frequencies up to 1 MHz, while the 4-channel DMA offloads housekeeping telemetry from the CPU. This allows the controller to maintain tight output regulation across the quarter-brick's wide load range.
Recomendado
Power Factor Correction (PFC) Stage
The DSPIC33FJ16GS402-I/SO suits PFC stages thanks to its dedicated high-speed PWM and fast analog comparators capable of cycle-by-cycle current shaping. The 16-bit modified Harvard architecture runs the boost PFC control loop in well under 1 us, allowing switching frequencies above 100 kHz for reduced magnetics. With 16 KB of flash and 2 KB of RAM, the controller stores the PI compensator coefficients, soft-start ramp, and THD optimization look-up tables needed for >0.99 power factor.
Recomendado
Uninterruptible Power Supply (UPS) Control
For line-interactive and double-conversion UPS topologies, the DSPIC33FJ16GS402-I/SO coordinates battery charging, AC-mains synchronization, and inverter PWM generation from a 3.3 V rail. Its DSP engine executes RMS voltage calculations and zero-crossing detection while the high-speed PWM drives the inverter at low-distortion sine output. The 16 KB flash accommodates state-machine firmware for grid-tie/battery mode transitions and fault diagnostics required for offline UPS safety standards.
Recomendado
Photovoltaic Micro-Inverter
The DSPIC33FJ16GS402-I/SO is a strong fit for photovoltaic micro-inverters because its high-speed PWM channels and analog comparators implement Maximum Power Point Tracking (MPPT) at panel-level switching rates. The device's 10-bit ADC continuously samples PV voltage and current while the DSP engine computes incremental-conductance MPPT in real time. Operating from 3.0 V to 3.6 V, the controller integrates easily with gate drivers in compact micro-inverter designs.
Recomendado
Digital Lighting Ballast
For digital fluorescent and LED ballasts, the DSPIC33FJ16GS402-I/SO generates high-frequency PWM that drives resonant LC tanks for HID or LED current regulation. The 16-bit DSP engine computes RMS lamp current and runs warm-up curves to extend lamp life, while the on-chip analog comparators detect lamp-strike and end-of-life faults. With 2 KB of RAM it stores dimming schedules and supports DALI or 0-10 V analog dimming interfaces for commercial lighting control.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DSPIC33FJ16GS402-I/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DSPIC33FJ16GS402-I/MM | DSPIC33FJ16GS402-E/SO | DSPIC33FJ16GS402-H/SP | DSPIC33FJ16GS402-50I/SP | DSPIC33FJ16GS404-I/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-28 (SO) | QFN-28 (MM) | SOIC-28 | SPDIP-28 | SPDIP-28 | SOIC-28 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS (50 MHz max) | 40 MIPS | 40 MIPS | 40 MIPS | 50 MIPS | 40 MIPS |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Supply Voltage | 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 | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I) | -40C to +85C | -40C to +125C (E) | -40C to +150C (H) | -40C to +85C | -40C to +85C |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 44 |
Principais diferenciais
- Integrated high-speed PWM and analog comparators purpose-built for SMPS (vs DSPIC33FJ16GS402-E/SO)
- 40 MIPS DSP engine with single-cycle MAC for tight control loops (vs DSPIC33FJ16GP304-I/ML)
- On-chip 4-channel DMA for low-overhead data movement (vs DSPIC33FJ16GS402-50I/SP)
Notas de projeto
The DSPIC33FJ16GS402-I/SO operates from 3.0 V to 3.6 V and requires a 10 uF + 0.1 uF decoupling pair on VDD placed within 5 mm of the VDD pin. The VCAP pin (pin 14) must have a low-ESR 4.7 uF to 10 uF ceramic capacitor tied to ground to stabilize the internal 1.8 V core regulator. Estimated: at 40 MIPS and 3.3 V, VDD current draw is around 30 mA - size the upstream 3.3 V LDO accordingly.
The 28-pin SOIC package has a typical theta_JA of approximately 70 C/W. At 30 mA active current and 3.3 V, internal dissipation is only 100 mW - well within thermal limits. For designs pushing higher PWM duty cycles or operating at 50 MHz (GS402-50I variant), keep the SOIC copper pour to at least 100 mm^2 on the VDD/GND plane to limit junction temperature rise. Estimated dissipation assumes typical dsPIC33F activity.
Route the high-speed PWM traces (PWM1H/L through PWM4H/L) with controlled impedance and keep them short - these signals drive power-stage MOSFETs at up to 1 MHz edge rates and are susceptible to ringing. Place the analog ADC traces (AN0-AN3) away from PWM traces by at least 3x trace spacing to minimize coupled noise into current-sense measurements. The MCLR pin needs a 10 kohm pull-up and a 100 nF cap to ground for clean in-circuit debugging.
Do not confuse the DSPIC33FJ16GS402 (28-pin, 16 KB flash) with the smaller-pin DSPIC33FJ06GS101/102 or larger-pin DSPIC33FJ16GS404/502/504 families - register maps and PWM channel counts differ. When migrating firmware from a 44-pin GS404 to the 28-pin GS402, remove or comment out references to PWM5/PWM6 and to ADC channels AN6+ to avoid silent compile-time peripheral conflicts.
Informações de conformidade
RoHS/REACH compliance and lead-free status confirmed via Microchip product page. The -E (extended) and -H (high-temperature) variants are not AEC-Q100 qualified; automotive applications should request AEC-Q100 parts from Microchip directly.
