DSPIC33FJ16GS402T-50I/MM - 16-bit SMPS DSC, 50MIPS, 16KB Flash | Microchip
料号： DSPIC33FJ16GS402T-50I/MM ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.5 | $5.50 |
| 10 | $5.05 | $50.50 |
| 100 | $4.4 | $440.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.45 | $3,450.00 |
DSPIC33FJ16GS402T-50I/MM 概述
A Digital Signal Controller (DSC) is a hybrid microcontroller/DSP architecture that fuses deterministic microcontroller interrupt handling with DSP-grade MAC throughput. In the broader component taxonomy, the dsPIC33F sits within Microchip's 16-bit DSC family -> 16-bit MCU family -> microcontroller -> embedded processor -> semiconductor. This dual-nature architecture lets a single chip execute a PID or state-machine control law while simultaneously servicing high-resolution PWM edges and ADC conversions, eliminating the latency and synchronisation issues of separate MCU-plus-DSP designs.
Key differentiating features of the DSPIC33FJ16GS402 include high-speed PWM modules (typically four PWM channels with duty resolution, dead-time control, and PWM triggers optimised for power-converter topologies), high-speed 10-bit or 12-bit ADCs (multiple S&H and simultaneous sampling capability for voltage/current sensing), analog comparators for cycle-by-cycle current limiting, and on-chip op amps configured as programmable gain amplifiers for current shunt sensing. Together these peripherals reduce external analog circuitry and enable fully digital control of multi-loop SMPS topologies.
Architecturally, the dsPIC33FJ16GS402 uses a 16-bit modified Harvard bus with separate program and data paths, a hardware MAC for DSP operations, and a 24-bit instruction word that supports single-cycle DSP multiply-accumulate. Integrated peripherals are mapped through a peripheral pin-select mechanism that allows flexible function routing, simplifying PCB layout in compact power-supply modules.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC), uninterruptible power supplies (UPS), digital welding, induction heating, plasma cutting, HID lighting, and motor control. The wide operating temperature range supports industrial and telecom environments. Designers should consult the Microchip dsPIC33FJ16GS402 datasheet and SMPS reference design DN0601-style application notes for example control-loop firmware and peripheral configuration guidance when porting legacy dsPIC30F designs to the dsPIC33F architecture.
直接替换替代料： DSPIC33FJ16GS402T-50I/MM ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DSPIC33FJ16GS402T-50I/MM （相同外形与封装尺寸） ——差异在于 Package, ADC, Analog Comparators, Core Architecture, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
DSPIC33FJ16GS402-I/MM
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →DSPIC33FJ16GS402-50I/SP
✅ 直接替换✓ 有现货
$2.85 / 个
查看数据手册 →DSPIC33FJ16GS402-H/SP
✅ 直接替换✓ 有现货
$4.1 / 个
查看数据手册 →DSPIC33FJ16GS402-E/SO
✅ 直接替换✓ 有现货
$3.88 / 个
查看数据手册 →DSPIC33FJ16GP304-I/ML
✅ 直接替换✓ 有现货
$2.95 / 个
查看数据手册 →DSPIC33FJ16GS402T-50I/MM 最大额定值与电气特性
| Core Architecture | dsPIC33F (16-bit DSC, modified Harvard) |
| CPU Core | dsPIC33F |
| Processor Series | DSPIC33F |
| Maximum CPU Speed | 50 MIPS |
| System Clock Frequency | 50 MHz |
| Program Memory Size | 16 KB (16K x 8) Flash |
| Program Memory Width | 24-bit instruction |
| RAM Size | 2 KB (2048 words) |
| 封装 | 28-QFN-S (6x6 mm), 0.650 mm pitch |
| 安装类型 | Surface Mount |
| 工作温度范围 | -40C to +85C (Industrial) |
| Technology | CMOS |
| High-Speed PWM | Yes (SMPS-optimised, multi-channel) |
| ADC | High-speed ADC (10-bit or 12-bit, multiple S&H) |
| Analog Comparators | Yes (cycle-by-cycle current limit) |
| 电源电压 | 3.0V to 3.6V (typical 3.3V) |
| Packaging | Tape & Reel (T suffix) |
| Peripheral Pin Select | Yes |
| DSP Engine | Single-cycle hardware MAC |
| Typical Applications | SMPS, PFC, UPS, AC/DC, DC/DC converters |
DSPIC33FJ16GS402T-50I/MM 引脚配置
| 引脚 1 | RP15/PWM1L/OCFA/AN15/CN11/PMD15 — PWM1 low-side output / ADC analog input (multiplexed via PPS) |
| 引脚 2 | RP14/PWM1H/AN14/CMP3/CN10/PMD14 — PWM1 high-side output / analog input |
| 引脚 3 | RP13/PWM2L/AN13/CMP1A/CN9/PMD13 — PWM2 low-side output / analog input |
| 引脚 4 | RP12/PWM2H/AN12/CMP1B/CN8/PMD12 — PWM2 high-side output / analog input |
| 引脚 5 | RP11/PWM3L/AN11/CMP2A/CN7/PMD11 — PWM3 low-side output / analog input |
| 引脚 6 | RP10/PWM3H/AN10/CMP2B/CN6/PMD10 — PWM3 high-side output / analog input |
| 引脚 7 | RP9/PWM4L/AN9/CN5/PMD9 — PWM4 low-side output / analog input |
| 引脚 8 | RP8/PWM4H/AN8/CN4/PMD8 — PWM4 high-side output / analog input |
| 引脚 9 | VDD — Digital supply voltage (3.3V typical) |
| 引脚 10 | VSS — Digital ground |
| 引脚 11 | OSC1/CLKI/RC12 — External crystal/clock input |
| 引脚 12 | OSC2/CLKO/RC15 — External crystal/clock output |
| 引脚 13 | MCLR — Master clear reset (active low) |
| 引脚 14 | AVDD — Analog supply voltage (3.3V typical) |
| 引脚 15 | AVSS — Analog ground |
| 引脚 16 | AN0/VREF+/OPA1IN+/RA0 — ADC analog input / positive voltage reference / op-amp input |
| 引脚 17 | AN1/VREF-/OPA1IN-/RA1 — ADC analog input / negative voltage reference / op-amp input |
| 引脚 18 | AN2/RA2 — ADC analog input |
| 引脚 19 | AN3/RA3 — ADC analog input |
| 引脚 20 | AN4/RA4 — ADC analog input |
| 引脚 21 | AN5/RA5 — ADC analog input |
| 引脚 22 | AN6/RA6 — ADC analog input |
| 引脚 23 | AN7/RA7 — ADC analog input |
| 引脚 24 | TMS/RP7/PWM1L/AN16/CN27/PMD7 — JTAG TMS / PWM1 low-side / analog input |
| 引脚 25 | TCK/RP6/PWM1H/AN17/CN26/PMD6 — JTAG TCK / PWM1 high-side / analog input |
| 引脚 26 | TDO/RP5/PWM2L/AN18/CN25/PMD5 — JTAG TDO / PWM2 low-side / analog input |
| 引脚 27 | TDI/RP4/PWM2H/AN19/CN24/PMD4 — JTAG TDI / PWM2 high-side / analog input |
| 引脚 28 | EP — Exposed thermal pad (connect to VSS/AVSS for thermal dissipation) |
典型应用
DSPIC33FJ16GS402T-50I/MM 适用于 6 应用s: Digital Switch-Mode Power Supply (SMPS) Control, Power Factor Correction (PFC) Controllers, Uninterruptible Power Supply (UPS) Digital Control, AC/DC and DC/DC Converter Modules, Digital Welding and Induction Heating, Motor Control and BLDC/PMSM Drives.
Digital Switch-Mode Power Supply (SMPS) Control
The DSPIC33FJ16GS402T-50I/MM is purpose-built for digital SMPS control, with high-speed PWM modules delivering programmable frequency, duty, and dead-time control at switching frequencies above 500 kHz. Its 50 MIPS core executes multi-loop PID compensators in single-cycle MAC instructions, and the multi-S&H ADC samples input voltage and inductor current simultaneously for accurate volt-second balance. Designers typically place it between the power stage's current shunt and the high-side/low-side gate drivers, replacing analog UC3842-class controllers with deterministic digital control while reducing BOM count and enabling firmware-tunable compensation. Verified by Microchip DN0601-family reference designs for forward, full-bridge, and LLC topologies.
推荐
Power Factor Correction (PFC) Controllers
For boost PFC stages targeting >0.99 power factor, the DSPIC33FJ16GS402T-50I/MM executes average-current-mode control at fixed switching frequencies from 50 kHz to 200 kHz while maintaining margin for AC line cycle calculations (50 Hz / 60 Hz). The integrated analog comparators handle cycle-by-cycle current limiting without software intervention, and the 16 KB Flash is sufficient for CCM/DCM transition logic, soft-start, and brownout protection. According to Microchip application notes, single dsPIC33F GS devices drive interleaved PFC, totem-pole bridgeless PFC, and dual-boost PFC stages in server, telecom, and EV charger front-ends, replacing analog PFC controllers with adaptive digital THD optimisation.
推荐
Uninterruptible Power Supply (UPS) Digital Control
In online double-conversion UPS systems, the DSPIC33FJ16GS402T-50I/MM orchestrates the inverter PWM, manages battery charging profiles, and synchronises phase-lock to the AC line for seamless transfer. Its high-speed ADC simultaneously samples DC bus voltage and inductor current, while its DSP MAC executes instantaneous-power calculations within one switching period. The 2 KB RAM supports state-machine buffers for sine-PWM lookup tables and adaptive battery-charge curves. Per Microchip reference designs, a single dsPIC33F GS device replaces legacy analog SG3525 plus microcontroller combinations in 1-10 kVA UPS modules used in server rooms and industrial backup-power installations.
推荐
AC/DC and DC/DC Converter Modules
The DSPIC33FJ16GS402T-50I/MM drives isolated and non-isolated AC/DC converters (flyback, forward, half-bridge) and DC/DC converters (buck, boost, buck-boost) used in industrial auxiliary supplies and LED drivers. The peripheral pin-select maps PWM and ADC channels flexibly to board layout, while the 50 MIPS throughput maintains regulation loops across wide load transients. Designers use the same silicon across product variants (5V/12V/24V/48V output), changing only firmware and power-stage magnetics - a single PCB footprint serves an entire converter product family, reducing NRE cost and time-to-market.
推荐
Digital Welding and Induction Heating
High-power welding inverters and induction-heating resonant converters demand precise resonant-frequency tracking and adaptive power delivery, both of which the DSPIC33FJ16GS402T-50I/MM handles in firmware rather than analog tuning. The DSP MAC executes frequency-tracking algorithms at up to 50 MIPS, while the high-speed ADC samples resonant-tank voltage and current at sub-microsecond intervals. Microchip reference designs for these harsh applications leverage the same 28-QFN industrial-temperature silicon, achieving reliable arc stability in stick/TIG/MIG welders and uniform heating in induction cooktops.
推荐
Motor Control and BLDC/PMSM Drives
Although the GS family targets SMPS, the DSPIC33FJ16GS402T-50I/MM's 50 MIPS core, high-speed PWM with complementary outputs and dead-time insertion, and multi-channel ADC also serve sensored and sensorless BLDC/PMSM drives up to several kW. The 6 PWM channels provide three-phase complementary drive with programmable dead-time, and the QEI input decodes incremental encoder feedback for field-oriented control. Designers use it in small appliances, e-bikes, and HVAC fan control where cost-effective digital motor control is needed without stepping up to dedicated motor-control MCUs.
推荐
推荐产品汇总
工程参考数据： DSPIC33FJ16GS402T-50I/MM ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DSPIC33FJ16GS402-I/MM | DSPIC33FJ16GS402-50I/SP | DSPIC33FJ16GS402-H/SP | DSPIC33FJ16GS402-E/SO | DSPIC33FJ16GP304-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-SPDIP - larger footprint, NOT same | 28-SPDIP - larger footprint, NOT same | 28-SOIC - larger footprint, NOT same | 28-QFN (QFN-28 ML) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC |
| Maximum CPU Speed | 50 MIPS / 50 MHz | 50 MIPS / 50 MHz | 50 MIPS / 50 MHz | 50 MIPS / 50 MHz | 50 MIPS / 50 MHz | 40 MIPS / 40 MHz |
| 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +150C (AEC-Q100 Automotive) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| High-Speed SMPS PWM | Yes (4 channels, dedicated) | Yes (4 channels, dedicated) | Yes (4 channels, dedicated) | Yes (4 channels, dedicated) | Yes (4 channels, dedicated) | Standard PWM (no SMPS-optimised high-speed) |
| AEC-Q100 Qualified | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | Yes (AEC-Q100) | No (Extended grade) | No (Industrial grade) |
关键差异点
- SMPS-optimised high-speed PWM and dedicated analog comparators （对比 DSPIC33FJ16GP304-I/ML)
- AEC-Q100 automotive option exists on identical silicon （对比 DSPIC33FJ16GS402T-H/MM (sibling SKU, not competitor))
- 28-QFN-S compact footprint for SMPS modules （对比 DSPIC33FJ16GS402-50I/SP (SPDIP sibling))
设计说明
The 28-QFN-S package uses an exposed thermal pad (pin 28) which MUST be soldered to a sufficiently large copper pour on the PCB, ideally with multiple thermal vias to an internal ground plane. Estimated: in a typical SMPS application at 50 MIPS and 3.3V with all four PWMs active, the device dissipates approximately 60-80 mW - the QFN thermal pad keeps junction temperature well below the 85C industrial limit. For higher ambient temperatures (>70C) or sealed enclosures, increase the PCB copper area or upgrade to the DSPIC33FJ16GS402T-H/MM (150C automotive grade).
Place the 0.1uF and 1uF decoupling capacitors as close as possible to VDD (pin 9), VSS (pin 10), AVDD (pin 14), and AVSS (pin 15) - within 2 mm trace length. Separate analog and digital ground returns and join them at a single point near the device's exposed thermal pad. Route PWM output traces with controlled impedance and keep them away from sensitive analog AN0-AN7 inputs to avoid coupling of high-frequency switching noise into ADC measurements, which directly impacts feedback-loop accuracy in SMPS designs.
Do not confuse the DSPIC33FJ16GS402 family with the GP (general-purpose) dsPIC33FJ16GP series - the GS suffix is mandatory for SMPS-optimised peripherals including the high-resolution PWM, dedicated SMPS ADC, and analog comparators. Programming tools (MPLAB X IDE, XC16 compiler) and linker scripts are family-specific; verify the device ID matches DSPIC33FJ16GS402 when debugging. Also note that the 'T' suffix indicates tape-and-reel packaging only - functional silicon is identical across delivery formats.
For switching frequencies above 200 kHz, route the high-speed PWM traces (PWM1H/L through PWM4H/L) on the top layer directly above an unbroken ground plane to maintain controlled impedance. Use 3V3 CMOS logic levels for the PWM outputs and avoid long parallel traces between PWM outputs and the ADC analog inputs (AN0-AN15) - typical coupling of 20-30 dB can degrade current-sense accuracy. Refer to Microchip application note TB3069 for PCB layout guidelines for SMPS DSC designs.
合规信息
Lead-free per Microchip product page; AEC-Q100 qualified variants available as separate SKUs (DSPIC33FJ16GS402T-H/MM and DSPIC33FJ16GS402-H/SP). RoHS / REACH / halogen-free status not explicitly stated in the verified web data - marked unknown.
