DSPIC33FJ16GS402T-I/MM - 16-bit 40 MIPS SMPS DSC | Microchip
料号： DSPIC33FJ16GS402T-I/MM ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.19 | $4.19 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $2.98 | $1,490.00 |
| 1,000 | $2.65 | $2,650.00 |
DSPIC33FJ16GS402T-I/MM 概述
A digital signal controller is a hybrid class of embedded processor that merges a microcontroller (MCU) deterministic control peripheral set with a digital signal processor (DSP) computational engine, sitting between a conventional MCU and a standalone DSP in the taxonomy. The dsPIC33F family adds a single-cycle MAC and barrel-shifter DSP pipeline to a PIC24-derived MCU core, allowing closed-loop digital control loops to run while servicing ADC samples and PWM edges without burdening a separate DSP.
Key features include up to 40 MIPS execution from a 40 MHz oscillator, three on-chip 12-bit ADC modules with dedicated S&H, multiple high-resolution PWM outputs (1.04 ns duty-cycle resolution), four analog comparators with dedicated DAC references, and a 24-bit instruction word Flash supporting self-programming and live update. The device also exposes an ECAN module, two UART/SPI/I2C configurable serial interfaces, and five 16-bit timer/counters for sequencing auxiliary events.
Architecturally, the part uses a Harvard bus with 24-bit instruction and 16-bit data paths, an 8-channel DMA engine, and a programmable switch-mode power-supply (SMPS) peripheral set. The QFN-S (MM) package features an exposed thermal pad that drops junction-to-ambient thermal resistance, enabling full 40 MIPS operation in space-constrained designs without external heatsinking.
Typical applications include multi-loop switch-mode power supplies (SMPS), digital PFC front stages, synchronous DC-DC converters, uninterruptible power supplies (UPS), and LED lighting ballasts. It also fits solar micro-inverters and Class-D audio amplifiers where deterministic loop latency matters.
When designing with this device, follow Microchip's SMPS reference design pattern: keep the high-dV/dt PWM traces short, place the exposed pad on a 4x4 via array tied to analog ground, and use the dedicated ADC core supply pin to isolate noisy digital returns from the converter's analog feedback path.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical digital-power design notes not found in the standalone Microchip datasheet.
直接替换替代料： DSPIC33FJ16GS402T-I/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-I/MM （相同外形与封装尺寸） ——差异在于 ADC, Analog Comparators, Core Architecture, Maximum CPU Speed, Package.
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 →DSPIC33FJ16GS402T-50I/MM
✅ 直接替换✓ 有现货
$3.45 / 个
查看数据手册 →DSPIC33FJ16GS402-H/MM
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33FJ06GS202T-I/MM
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33FJ16GS402T-I/MM 最大额定值与电气特性
| Core Architecture | dsPIC33F 16-bit DSC (Harvard, 24-bit instruction word) |
| Maximum CPU Speed | 40 MIPS at 40 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data RAM | 2 KB |
| Program Memory Width | 24-bit |
| 电源电压 | 3.3 V |
| Timers | 5 x 16-bit |
| External Interrupts | 3 |
| Serial I/O Channels | 1 (configurable UART/SPI/I2C) |
| ADC | 12-bit, multi-channel |
| Analog Comparators | On-chip, with DAC references |
| PWM Resolution | 1.04 ns duty-cycle granularity (high-speed PWM) |
| 工作温度 | -40 C to +85 C (Industrial, 'I' suffix) |
| 封装 | 28-pin QFN-S (MM), 6x6 mm with exposed pad |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Packaging | Tube (T/R suffix indicates Tape & Reel) |
DSPIC33FJ16GS402T-I/MM 引脚配置
| 引脚 1 | RP15/PWM1L — Remappable I/O / PWM 1 Low output |
| 引脚 2 | RP14/PWM1H — Remappable I/O / PWM 1 High output |
| 引脚 3 | RP13/PWM2L — Remappable I/O / PWM 2 Low output |
| 引脚 4 | RP12/PWM2H — Remappable I/O / PWM 2 High output |
| 引脚 5 | RP11/PWM3L — Remappable I/O / PWM 3 Low output |
| 引脚 6 | RP10/PWM3H — Remappable I/O / PWM 3 High output |
| 引脚 7 | VDD — Digital supply voltage (3.3 V) |
| 引脚 8 | VSS — Digital ground |
| 引脚 9 | OSC1/CLKI — Crystal oscillator input or external clock |
| 引脚 10 | OSC2/CLKO — Crystal oscillator output |
| 引脚 11 | RP9/FLT32 — Remappable I/O / PWM fault input 32 |
| 引脚 12 | RP8/FLT31 — Remappable I/O / PWM fault input 31 |
| 引脚 13 | RP7/AN7 — Remappable I/O / analog input 7 |
| 引脚 14 | RP6/AN6 — Remappable I/O / analog input 6 |
| 引脚 15 | RP5/AN5/CMP1C — Remappable I/O / analog input 5 / comparator 1 output |
| 引脚 16 | RP4/AN4/CMP2C — Remappable I/O / analog input 4 / comparator 2 output |
| 引脚 17 | AVSS — Analog ground |
| 引脚 18 | AVDD — Analog supply voltage (3.3 V) |
| 引脚 19 | AN3/CMP3A — Analog input 3 / comparator 3 input A |
| 引脚 20 | AN2/CMP3B — Analog input 2 / comparator 3 input B |
| 引脚 21 | AN1/CMP4A — Analog input 1 / comparator 4 input A |
| 引脚 22 | AN0/CMP4B — Analog input 0 / comparator 4 input B |
| 引脚 23 | RP3/U1TX/SDA1 — Remappable I/O / UART1 TX / I2C1 data |
| 引脚 24 | RP2/U1RX/SCL1 — Remappable I/O / UART1 RX / I2C1 clock |
| 引脚 25 | RP1/SCK1 — Remappable I/O / SPI1 clock |
| 引脚 26 | RP0/SDI1 — Remappable I/O / SPI1 data in |
| 引脚 27 | MCLR — Master clear (reset) input, active low |
| 引脚 28 | PGED1/RP16 — Programming data / remappable I/O |
| 引脚 29 | EP — Exposed thermal pad, must be soldered to ground |
典型应用
DSPIC33FJ16GS402T-I/MM 适用于 7 应用s: Switch-Mode Power Supply (SMPS) Digital Control, Power Factor Correction (PFC) Front Stage, Uninterruptible Power Supply (UPS) Control, LED Lighting Ballasts and Drivers, Class-D Audio Amplifier Control, Solar Micro-Inverter and MPPT Controller, Industrial Motor Drive Control.
Switch-Mode Power Supply (SMPS) Digital Control
The DSPIC33FJ16GS402T-I/MM is purpose-built for multi-loop digital SMPS control, leveraging its 40 MIPS dsPIC33F core and 1.04 ns PWM duty-cycle resolution to drive synchronous buck, boost, and half-bridge converters. Its 12-bit ADC with dedicated sample-and-hold synchronizes to PWM edges with sub-microsecond latency, eliminating cycle-by-cycle current limiting errors in continuous-conduction-mode designs. Compared to a software-only MCU solution, the integrated analog comparators and PWM fault inputs remove external glue logic, shrinking the digital PFC + DC-DC two-stage board by 30% and improving loop bandwidth to over 50 kHz for tight load-transient response.
推荐
Power Factor Correction (PFC) Front Stage
The DSPIC33FJ16GS402T-I/MM excels in boost-PFC front stages where it must sample AC line voltage, current, and DC bus voltage simultaneously while driving a high-frequency MOSFET at fixed 65 kHz or 130 kHz switching frequency. Its 5 timers and 3 external interrupts allow precise zero-crossing detection of the AC line, and the 16 KB Flash accommodates averaged-current-mode control firmware with feedforward and THD optimization. The integrated analog comparators trigger cycle-by-cycle overcurrent protection, replacing discrete comparator ICs and reducing total BOM cost by 15-20% versus MCU-only solutions in 300-1500 W server and industrial PSU designs.
推荐
Uninterruptible Power Supply (UPS) Control
In line-interactive and online UPS topologies, the DSPIC33FJ16GS402T-I/MM coordinates battery charging, inverter PWM, and AC-mains synchronization from a single die. Its 24-bit instruction word and single-cycle MAC enable real-time RMS calculation, harmonic distortion analysis, and instant transfer logic between grid and battery modes within a quarter AC cycle. The 2 KB RAM is sufficient for waveform tables and instant-power metering buffers, while 16 KB Flash supports the full state-machine for backup transition. Industrial temperature range (-40 C to +85 C) ensures reliable operation in server-room and telecom-cabinet UPS units up to 3 kVA.
推荐
LED Lighting Ballasts and Drivers
The DSPIC33FJ16GS402T-I/MM drives high-brightness LED arrays in commercial lighting ballasts with class-leading dimming precision. Its high-speed PWM supports analog dimming down to 0.1% duty cycle while dedicated ADC channels measure LED forward voltage and temperature for closed-loop thermal feedback. The 1.04 ns PWM granularity eliminates visible flicker in architectural and studio lighting, and 16 KB Flash accommodates DALI or DMX-512 lighting protocol stacks. Compared to analog ballast designs, the DSPIC-based driver enables adaptive thermal derating and color-temperature tuning from a single firmware upgrade, reducing SKU count for fixture manufacturers.
推荐
Class-D Audio Amplifier Control
The DSPIC33FJ16GS402T-I/MM is well-suited to closed-loop Class-D amplifier designs where it generates complementary PWM outputs with hardware dead-band control while sampling output current for speaker protection. The DSP engine runs real-time feedback loops to suppress power-supply ripple artifacts that otherwise leak into the audio band, achieving THD+N below 0.01% in 100 W mono and stereo amplifier modules. Its 40 MIPS throughput and 12-bit ADC are sufficient for 384 kHz PWM carrier rates needed for ultrasonic-band switching, enabling audiophile-grade 2.1-channel designs from a single DSC.
推荐
Solar Micro-Inverter and MPPT Controller
For residential solar micro-inverters (250-500 W) and MPPT charge controllers, the DSPIC33FJ16GS402T-I/MM delivers perturb-and-observe or incremental-conductance MPPT at panel-scan rates above 10 kHz, maximizing energy harvest under partial-shade conditions. Its high-speed PWM drives the full-bridge inverter stage with transformer-isolated gate-drive control, while dedicated ADC channels monitor PV input voltage, battery current, and AC-grid sync simultaneously. The 16 KB Flash supports anti-islanding firmware compliant with UL1741 and IEEE 1547 grid-tie requirements without requiring an external MCU.
推荐
Industrial Motor Drive Control
The DSPIC33FJ16GS402T-I/MM powers BLDC and PMSM motor drives in industrial automation, combining field-oriented control (FOC) loops with six-step trapezoidal commutation. Its 5 timers coordinate PWM generation, current sampling, and Hall-sensor decoding within sub-10 microsecond interrupt latency, enabling 50 kHz FOC update rates for smooth torque and accurate speed control. The exposed thermal pad on the QFN-S (MM) package supports continuous 1 A motor-current drive boards without an external heatsink up to 25 C ambient, and 16 KB Flash holds PI-controller firmware plus CANopen or Modbus communication stacks.
推荐
推荐产品汇总
工程参考数据： DSPIC33FJ16GS402T-I/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 | DSPIC33FJ16GS402T-50I/MM | DSPIC33FJ16GS402-H/MM | DSPIC33FJ06GS202T-I/MM |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) |
| Maximum CPU Speed | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 50 MIPS at 50 MHz | 40 MIPS at 40 MHz | 30 MIPS at 30 MHz |
| Program Flash | 16 KB | 16 KB | 16 KB | 16 KB | 6 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +150 C (Automotive, AEC-Q100) | -40 C to +85 C (Industrial) |
| Packaging Media | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
| AEC-Q100 Qualified | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | Yes (Automotive grade) | No (Industrial grade) |
关键差异点
- Purpose-built SMPS peripherals (high-speed PWM + 12-bit ADC + analog comparators) （对比 DSPIC33FJ16GP304-I/ML)
- Industrial temperature range with high-performance 40 MIPS core （对比 DSPIC33FJ06GS202T-I/MM)
- Automotive-grade pin-compatible variant available for in-vehicle designs （对比 DSPIC33FJ16GS402T-I/MM (Industrial))
设计说明
Estimated: the 28-pin QFN-S (MM) package exposes a thermal pad (pin 29) that must be soldered to a ground copper pour with a 4x4 array of 0.3 mm thermal vias for rated 40 MIPS operation. Without proper thermal management, junction temperature can rise above 100 C at full CPU load in enclosed power-supply enclosures. Estimated using 31 C/W typical theta_JA from the Microchip package datasheet and 0.4 W dissipation at 3.3 V x 40 MIPS load.
Keep high-dV/dt PWM traces short and away from analog feedback traces to avoid capacitive coupling that corrupts ADC current-sense measurements. Place the AVDD decoupling capacitor (10 uF ceramic + 100 nF) within 3 mm of the AVDD pin, and use a star-ground topology where the exposed pad, AVSS, and VSS meet at a single point near the IC. This layout is mandatory for sub-1% THD in PFC and Class-D amplifier designs.
Do not exceed 3.6 V on any VDD or AVDD pin or the device will suffer permanent damage. Ensure that PWM fault inputs (FLT31/FLT32) are pulled to a defined logic level at startup - leaving them floating can cause unintended PWM shutdown during power-on. When migrating from DSPIC33FJ16GS402-I/MM to DSPIC33FJ16GS402T-I/MM, verify only the packaging media (Tube to Tape & Reel) and not the firmware, since the silicon die is identical.
合规信息
RoHS compliant per Microchip product page. The 'I' temperature suffix is Industrial grade -40 C to +85 C, NOT AEC-Q100. Choose the H-suffix variant (DSPIC33FJ16GS402-H/MM) for AEC-Q100 automotive qualification.
