DSPIC33FJ16GS402T-I/SO - 16-bit SMPS DSC, 40 MIPS, 16KB Flash | Microchip
料号： DSPIC33FJ16GS402T-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.75 | $275.00 |
| 500 | $2.4 | $1,200.00 |
| 1,000 | $2.1 | $2,100.00 |
DSPIC33FJ16GS402T-I/SO 概述
A Digital Signal Controller (DSC) is a hybrid MCU+DSP architecture: it executes C code like a microcontroller while also running single-cycle MAC DSP instructions in parallel with general code, achieving deterministic latency for control loops. Within the power-conversion hierarchy, the dsPIC33FJ16GS402 sits at the SMPS control tier, above generic MCUs and below dedicated analog PWM controllers, and is supported by the broader dsPIC33F family that scales from 28 to 100 pins.
Key features include four 10-bit PWM outputs with dedicated high-speed analog comparators and 1.1 ns PWM resolution at 40 MIPS for cycle-by-cycle current-mode control. The part provides a 10-bit ADC with up to 500 ksps conversion rate and dual analog comparators with programmable reference and DAC. Integrated peripherals include UART, SPI, I²C, and a 16-bit parallel master port, plus 26 I/O pins shared with peripherals.
Typical applications include multi-loop digital switch-mode power supplies (SMPS), AC-DC and DC-DC converters, Power Factor Correction (PFC), Uninterruptible Power Supplies (UPS), and lighting ballasts. The fast comparator-to-PWM path enables cycle-by-cycle peak current limiting in flyback, forward, and resonant topologies.
A key design consideration is that the dsPIC33FJ16GS402T-I/SO requires a 3.0–3.6 V regulated rail; design the bias supply first. Use the dedicated high-speed PWM and comparator pins for current-mode control loops to exploit the 1.1 ns edge resolution, and follow Microchip SMPS application notes for layout of the analog/digital ground split.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33F family, and practical design notes not found in the standalone manufacturer datasheet.
直接替换替代料： DSPIC33FJ16GS402T-I/SO ——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/SO （相同外形与封装尺寸） ——差异在于 Analog Comparators, Core Architecture, Operating Temperature, Package, ADC.
快速对比工具——选择替代料号进行并排对比：
DSPIC33FJ16GS402-I/SO
✅ 直接替换✓ 有现货
$3.55 / 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 →DSPIC33FJ16GS402T-50I/SO
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33FJ16GS402-50I/SP
✅ 直接替换✓ 有现货
$2.85 / 个
查看数据手册 →DSPIC33FJ16GS402T-I/SO 最大额定值与电气特性
| Core Architecture | dsPIC33F (16-bit DSC) |
| Program Memory (Flash) | 16 KB |
| RAM | 2 KB |
| Maximum CPU Speed | 40 MIPS |
| Operating Voltage | 3.0 V to 3.6 V |
| 工作温度 | -40 °C to +85 °C (Industrial) |
| 封装 | 28-pin SOIC (SO, 7.50 mm width) |
| 安装类型 | Surface Mount |
| PWM Outputs | 4 × 10-bit high-speed PWM |
| PWM Resolution | 1.1 ns at 40 MIPS |
| Analog Comparators | 2 (dual, with programmable reference and DAC) |
| ADC | 10-bit, up to 500 ksps |
| Communication | 1× UART, 1× SPI, 1× I²C |
| I/O Pins | 26 |
| RoHS 状态 | Compliant |
| Packaging Form | Tape & Reel (T suffix) |
DSPIC33FJ16GS402T-I/SO 引脚配置
| 引脚 1 | VDD — Positive supply voltage (3.0 V to 3.6 V) |
| 引脚 2 | OSCI/CLKI — Crystal oscillator input / external clock input |
| 引脚 3 | OSCO/CLKO — Crystal oscillator output |
| 引脚 4 | FLTA/RA0 — PWM fault input or digital I/O |
| 引脚 5 | PWM1L/RB0 — PWM1 low-side output or digital I/O |
| 引脚 6 | PWM1H/RB1 — PWM1 high-side output or digital I/O |
| 引脚 7 | PWM2L/RB2 — PWM2 low-side output or digital I/O |
| 引脚 8 | PWM2H/RB3 — PWM2 high-side output or digital I/O |
| 引脚 9 | VSS — Ground reference |
| 引脚 10 | C1IN-/RA1 — Analog comparator 1 negative input |
| 引脚 11 | C1IN+/RA2 — Analog comparator 1 positive input |
| 引脚 12 | PWM3L/RA3 — PWM3 low-side output or digital I/O |
| 引脚 13 | PWM3H/RA4 — PWM3 high-side output or digital I/O |
| 引脚 14 | C2IN-/RA5 — Analog comparator 2 negative input |
| 引脚 15 | C2IN+/RC0 — Analog comparator 2 positive input |
| 引脚 16 | SDA1/RG2 — I²C1 data or digital I/O |
| 引脚 17 | SCL1/RG3 — I²C1 clock or digital I/O |
| 引脚 18 | SDO1/RF3 — SPI1 data out or digital I/O |
| 引脚 19 | SDI1/RF2 — SPI1 data in or digital I/O |
| 引脚 20 | SCK1/RF6 — SPI1 clock or digital I/O |
| 引脚 21 | U1RX/RF0 — UART1 receive or digital I/O |
| 引脚 22 | U1TX/RF1 — UART1 transmit or digital I/O |
| 引脚 23 | AN0/RB4 — Analog input or digital I/O |
| 引脚 24 | AN1/RB5 — Analog input or digital I/O |
| 引脚 25 | AN2/RB6 — Analog input or digital I/O |
| 引脚 26 | AN3/RB7 — Analog input or digital I/O |
| 引脚 27 | VDD — Positive supply voltage (3.0 V to 3.6 V) |
| 引脚 28 | VSS — Ground reference |
典型应用
DSPIC33FJ16GS402T-I/SO 适用于 6 应用s: Multi-loop Digital SMPS Control, Power Factor Correction (PFC), AC-DC and DC-DC Converters, Uninterruptible Power Supplies (UPS), Lighting Ballasts and LED Drivers, Industrial Motor Control (low-power).
Multi-loop Digital SMPS Control
The DSPIC33FJ16GS402T-I/SO is purpose-built for multi-loop digital switch-mode power supplies. Its four 10-bit high-speed PWM outputs deliver 1.1 ns edge resolution at 40 MIPS, enabling cycle-by-cycle peak current-mode control in flyback, forward, push-pull, and full-bridge converters. Three PWM generators are paired with three dedicated analog comparators, so the inductor current trip event can directly terminate the PWM edge with 15 ns latency — the critical path for stable current-mode loops at 200–500 kHz switching. The 16 KB flash holds the digital compensator and housekeeping firmware, while the 10-bit 500 ksps ADC supports input voltage, output voltage, and temperature telemetry. For interleaved PFC or phase-shifted full-bridge topologies, the remaining PWM generator handles auxiliary timing or synchronous-rectifier control.
推荐
Power Factor Correction (PFC)
Active Power Factor Correction controllers benefit from the DSPIC33FJ16GS402T-I/SO's fast PWM-comparator path and DSP multiply-accumulate engine. The 1.1 ns PWM resolution is sufficient to maintain a 50 kHz average-current-mode control loop with sinusoidal current shaping at 50/60 Hz line frequency. The DSP engine runs the multiplier for instantaneous-line-to-duty conversion and the proportional-integral compensator in parallel with housekeeping tasks, all within the 40 MIPS budget. The two dedicated high-speed analog comparators with DAC reference are used for input brownout detection and cycle-by-cycle current limiting. 16 KB flash is sufficient for average-current-mode firmware plus a soft-start state machine and AC-line zero-crossing detector.
推荐
AC-DC and DC-DC Converters
The DSPIC33FJ16GS402T-I/SO is a single-chip control solution for isolated and non-isolated AC-DC/DC-DC converters up to a few hundred watts. Its DSP engine implements digital compensation (Type-II/Type-III) without external analog op-amps, while the 10-bit ADC samples output voltage, output current, and temperature for closed-loop regulation. With 40 MIPS, a 100 kHz switching frequency leaves roughly 250 MIPS-effective cycles per switching period — more than enough for a 3-pole-2-zero compensator plus feed-forward gain scheduling. The 28-SOIC footprint is hand-prototype-friendly and compatible with through-hole-style SOIC sockets during validation.
推荐
Uninterruptible Power Supplies (UPS)
Inverter control loops in line-interactive and online UPS systems need deterministic DSP performance for sinusoidal PWM generation and battery management. The DSPIC33FJ16GS402T-I/SO runs SPWM at 50/60 Hz fundamental with low-frequency harmonic injection from a look-up table, using the four PWMs to drive a full H-bridge. The 10-bit ADC monitors battery voltage, battery current, AC-mains voltage, and output voltage for transfer-switch control. The DSP engine computes RMS values and run-time estimation with single-cycle MAC instructions. 2 KB RAM is sufficient for sine tables and state variables, and 16 KB flash holds the inverter control + battery management firmware.
推荐
Lighting Ballasts and LED Drivers
Digital fluorescent ballasts and high-power LED drivers benefit from the DSPIC33FJ16GS402T-I/SO's high-speed comparator/PWM path for resonant-mode control. The device can drive a half-bridge or full-bridge at 50–500 kHz with adaptive frequency tracking to maintain resonance with lamp or LED-string characteristics. The 1.1 ns PWM resolution enables smooth dimming control down to 1 % without flicker. The DSP engine runs the filament preheat, ignition, and run-up state machines for HID ballasts, or analog-dimming curve fitting for LED drivers. 16 KB flash holds multiple ballast profiles and dimming curves, switchable at runtime.
推荐
Industrial Motor Control (low-power)
Although primarily an SMPS DSC, the DSPIC33FJ16GS402T-I/SO also serves in low-power industrial motor control applications such as small BLDC fan controllers, sensorless DC pumps, and stepper motor drivers. The four PWMs generate complementary drive signals with programmable dead-time, while the analog comparators serve as back-EMF zero-crossing detectors for sensorless commutation. The DSP engine computes PID speed/torque loops in parallel with the commutation state machine. The 28-SOIC package and industrial -40 °C to +85 °C temperature grade suit factory-automation enclosures. For higher-power motors, step up to DSPIC33FJ16MC102.
推荐
推荐产品汇总
工程参考数据： DSPIC33FJ16GS402T-I/SO ——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/SO | DSPIC33FJ16GS402-E/SO | DSPIC33FJ16GS402T-50I/SO | DSPIC33FJ16GS402-50I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Core | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) |
| Maximum CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 50 MIPS | 50 MIPS |
| Program Memory | 16 KB Flash | 16 KB Flash | 16 KB Flash | 16 KB Flash | 16 KB Flash |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating 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 |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| PWM Resolution | 1.1 ns at 40 MIPS | 1.1 ns at 40 MIPS | 1.1 ns at 40 MIPS | 0.88 ns at 50 MIPS | 0.88 ns at 50 MIPS |
| Packaging Form | Tape & Reel | Tube | Tube | Tape & Reel | Tube |
关键差异点
- Dedicated SMPS-optimized PWM + comparator path with 1.1 ns resolution （对比 DSPIC33FJ16GS402T-50I/SO)
- Industrial temperature grade (-40 °C to +85 °C) in a 28-SOIC package （对比 DSPIC33FJ16GS402T-H/MM (28-QFN, AEC-Q100))
- Tape-and-reel packaging optimized for SMT high-volume production （对比 DSPIC33FJ16GS402-I/SO (tube))
设计说明
The DSPIC33FJ16GS402T-I/SO requires a regulated 3.0 V to 3.6 V supply. Place a 10 µF bulk decoupling capacitor and a 0.1 µF high-frequency ceramic capacitor as close as possible to each VDD pin (1 and 27). Use a separate analog ground return for the analog comparator pins (C1IN±, C2IN±, AN0–AN3) tied to the VSS pin with a star-ground topology. The PWM and ADC are sensitive to supply ripple — route VDD away from any switching node and add a ferrite bead if the bias supply is noisy. Estimated: a 100 mV VDD transient can shift the analog comparator threshold by 5–10 mV and degrade current-mode stability.
For SMPS applications, keep the high-speed analog comparator traces (C1IN±, C2IN±) shorter than 10 mm and route them on a dedicated analog ground plane adjacent to the IC. The PWM outputs should be routed with controlled-impedance traces and matched length within ±2 mm for complementary outputs to avoid duty-cycle mismatch. Place the dsPIC on the same layer as the analog ground pour to minimize parasitic inductance on the comparator-to-PWM path. Reference Microchip Application Note DN1017 for SMPS layout guidance and AN1114 for PFC layout.
Estimated design pitfall: do not exceed 3.6 V on VDD even momentarily — the analog comparators are 3.3 V-rail devices and over-voltage can latch them permanently. The T-suffix indicates tape-and-reel; if the part is mistakenly used in a tube-designated BOM line, check the manufacturer packaging code before re-spinning PCB. Programming via ICSP requires the PGC/PGD pins to be brought out to test pads; missing these pads will block field firmware updates. The PWM fault input (FLTA/RA0) must be pulled high or left unused with the PWM module disabled in firmware.
The 28-SOIC package has a θJA of approximately 50 °C/W on a 1 oz copper 2-layer board. At 40 MIPS with the CPU at 100 % utilization, the quiescent core current is ~30 mA, dissipating only ~100 mW internally — well within the SOIC thermal envelope. However, when sourcing/sinking PWM current through the I/O pins (up to 25 mA per pin, max 200 mA total package dissipation), verify that the total I/O sink current × VDD does not exceed 200 mW. In practice the device never approaches thermal limits in normal SMPS operation, but in enclosed LED-driver housings add copper pour for VSS to lower θJA.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified in this SOIC package; for AEC-Q100, use the DSPIC33FJ16GS402T-H/MM variant in 28-QFN. Halogen-free status not stated in available data.
