DSPIC33FJ16GS404T-I/ML - 16-bit 40MIPS 16KB Flash SMPS DSC | Microchip
MPN: DSPIC33FJ16GS404T-I/ML ✓ Hoạt độngDSPIC33FJ16GS404T-I/ML Tóm tắt
A dsPIC33F DSC (Digital Signal Controller) is a hybrid device that combines a 16-bit MCU with a single-cycle DSP engine and SMPS-optimized peripherals in one silicon die, occupying the position of digital power controller in the product hierarchy: dsPIC33F DSC > digital signal controller > microcontroller > semiconductor. The "GS" series specifically targets switched-mode power supplies, digital lighting, power conversion and motor control with high-resolution PWM (typically 1.04 ns resolution at 50 MHz) and integrated analog resources such as 4 S&H, 4 comparators and an op-amp. This integration eliminates the need for an external DSP while providing deterministic interrupt latency critical for closed-loop power control.
Key features include: 16 KB Flash (16K x 8), 2048 bytes SRAM, 40 MIPS at 3.0-3.6V, 16-bit data path, 24-bit instruction word, integrated op-amp/comparator, 4-channel high-speed PWM (1.04 ns edge resolution), 10-bit ADC with up to 500 ksps, I2C/SPI/UART interfaces, JTAG/ICSP debug, and an industrial -40°C to +85°C operating temperature range. The QFN-44 (8x8 mm) package with exposed thermal pad enables efficient heat dissipation in compact power designs.
Architecturally, the device uses a modified Harvard bus with single-cycle MAC, a barrel shifter, and 16 working registers, while dedicated SMPS peripherals (high-speed ADC with 4 S&H, high-resolution PWM with 1.04 ns edge placement, integrated op-amp and analog comparators) offload the CPU from real-time power-control loop tasks. The 40 MIPS throughput is sufficient for voltage-mode, current-mode and PFC control loops running at typical 50-200 kHz switching frequencies with margin for housekeeping and communications.
Typical applications include digital switch-mode power supplies (SMPS), uninterruptible power supplies (UPS), power factor correction (PFC) front stages, digital LED lighting ballasts, solar micro-inverters, DC-DC converters (buck/boost/SEPIC), battery chargers, and motor control for low-voltage BLDC fans. The industrial temperature range and AEC-Q100-style qualification of the GS family make it suitable for demanding industrial environments.
When designing with the DSPIC33FJ16GS404T-I/ML, ensure the exposed pad of the QFN-44 package is soldered to a sufficient copper pour for thermal dissipation, since the device may dissipate 0.5-1 W in active digital-power loops. Use the on-chip op-amp for current sensing and the high-speed comparator for peak-current-mode control, leaving the CPU free for supervisory tasks. Decouple VDD/VSS pairs with 100 nF + 10 µF ceramic capacitors placed as close as possible to the pins.
This page synthesizes distributor pricing, drop-in alternatives, comparison parameters and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ16GS404T-I/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33FJ16GS404T-I/ML (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, Operating Temperature, Package, Debug Interface.
DSPIC33FJ16GS404T-50I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS404-50I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS404-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS404T-E/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS402-I/MM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS404T-I/ML Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33F 16-bit DSC (modified Harvard) |
| CPU Speed | 40 MIPS |
| Tần số xung maksimum | 50 MHz (internal, FRC) |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data Memory (SRAM) | 2 KB (2048 bytes) |
| Operating Voltage | 3.0 V to 3.6 V |
| ADC | 10-bit, up to 500 ksps, 4 S&H channels |
| High-Speed PWM | 4 channels, 1.04 ns edge resolution |
| Analog Comparators | 4 |
| Operational Amplifiers | 1 integrated |
| Communication | I2C, SPI, UART |
| Instruction Width | 24-bit |
| Data Path | 16-bit |
| Nhiệt độ hoạt động | -40°C to +85°C (Industrial) |
| Hộp | 44-pin QFN (8x8 mm) with EP |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Debug Interface | JTAG / ICSP |
| DMA Channels | 8 |
Cấu hình chân DSPIC33FJ16GS404T-I/ML
| Chân 1 | OSC1/RA0 — Crystal/clock input or GPIO |
| Chân 2 | OSC2/RA1 — Crystal/clock output or GPIO |
| Chân 3 | RA2 — GPIO |
| Chân 4 | RA3 — GPIO |
| Chân 5 | RA4 — GPIO |
| Chân 6 | AVDD — Analog supply voltage |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | AN0/RB0 — Analog input 0 / GPIO |
| Chân 9 | AN1/RB1 — Analog input 1 / GPIO |
| Chân 10 | AN2/RB2 — Analog input 2 / GPIO |
| Chân 11 | AN3/RB3 — Analog input 3 / GPIO |
| Chân 12 | AN4/RB4 — Analog input 4 / GPIO |
| Chân 13 | AN5/RB5 — Analog input 5 / GPIO |
| Chân 14 | AN6/RB6 — Analog input 6 / GPIO |
| Chân 15 | AN7/RB7 — Analog input 7 / GPIO |
| Chân 16 | PWM1H — PWM 1 high-side output |
| Chân 17 | PWM1L — PWM 1 low-side output |
| Chân 18 | PWM2H — PWM 2 high-side output |
| Chân 19 | PWM2L — PWM 2 low-side output |
| Chân 20 | PWM3H — PWM 3 high-side output |
| Chân 21 | PWM3L — PWM 3 low-side output |
| Chân 22 | PWM4H — PWM 4 high-side output |
| Chân 23 | PWM4L — PWM 4 low-side output |
| Chân 24 | VDD — Digital supply voltage |
| Chân 25 | VSS — Digital ground |
| Chân 26 | RC0 — GPIO / UART1 TX |
| Chân 27 | RC1 — GPIO / UART1 RX |
| Chân 28 | RC2 — GPIO |
| Chân 29 | RC3 — GPIO |
| Chân 30 | RC4 — GPIO / SDA1 |
| Chân 31 | RC5 — GPIO / SCL1 |
| Chân 32 | RC6 — GPIO / SCK1 |
| Chân 33 | RC7 — GPIO / SDO1 |
| Chân 34 | RC8 — GPIO / SDI1 |
| Chân 35 | RC9 — GPIO |
| Chân 36 | MCLR — Master clear reset (active low) |
| Chân 37 | PGED1 — ICSP data / JTAG TMS |
| Chân 38 | PGEC1 — ICSP clock / JTAG TCK |
| Chân 39 | PGED2 — ICSP data 2 / JTAG TDO |
| Chân 40 | PGEC2 — ICSP clock 2 / JTAG TDI |
| Chân 41 | INT0/RD0 — External interrupt 0 / GPIO |
| Chân 42 | RD1 — GPIO |
| Chân 43 | VDD — Digital supply voltage (second) |
| Chân 44 | VSS — Digital ground (second) |
Ứng dụng tiêu biểu
DSPIC33FJ16GS404T-I/ML phù hợp cho 7 Áp dụngs: Digital Switch-Mode Power Supply (SMPS) Controller, Power Factor Correction (PFC) Front Stage, Digital LED Lighting Ballast, Solar Micro-Inverter / DC-DC Optimizer, Battery Charger Controller, BLDC Motor / Fan Control, Uninterruptible Power Supply (UPS) Controller.
Digital Switch-Mode Power Supply (SMPS) Controller
The DSPIC33FJ16GS404T-I/ML is the central controller for digital SMPS designs, where its integrated high-speed PWM (1.04 ns edge resolution) and 10-bit ADC with 4 S&H channels perform closed-loop control without external analog ICs. According to Microchip datasheet 70000318G, the 40 MIPS throughput handles voltage-mode or peak-current-mode control loops at switching frequencies up to ~2 MHz, with CPU headroom for soft-start, slope compensation, and PMBus communication. The integrated op-amp and four analog comparators eliminate the need for external current-sense amplifiers in peak-current-mode PFC and DC-DC converters.
Được đề xuất
Power Factor Correction (PFC) Front Stage
In PFC boost front stages, the DSPIC33FJ16GS404T-I/ML executes average-current-mode control with 4-channel simultaneous sampling, keeping total harmonic distortion (THD) below 5 % at full load. The dedicated PWM with 1.04 ns edge resolution supports interleaved PFC topologies, while the integrated op-amp conditions the current-sense signal directly. Industrial -40 °C to +85 °C operation makes the part suitable for telecom rectifiers and server PSUs where the PF stage operates in a hot environment.
Được đề xuất
Digital LED Lighting Ballast
The DSPIC33FJ16GS404T-I/ML drives digital LED ballasts with dimming control, temperature feedback and constant-current regulation. Its 16 KB Flash accommodates the dimming algorithm and DMX-512 / DALI protocol stack, while the high-speed PWM channels provide flicker-free dimming down to 1 % duty. The 3.3 V single-supply operation simplifies power design; for higher-current LED strings, an external buck or boost stage is gated by the DSC's PWM outputs.
Được đề xuất
Solar Micro-Inverter / DC-DC Optimizer
In solar micro-inverter or DC-DC optimizer topologies, the DSPIC33FJ16GS404T-I/ML executes MPPT (Maximum Power Point Tracking) algorithms with sub-millisecond response, maximizing energy harvest under partial-shade conditions. The integrated DSP engine performs single-cycle MAC operations on the current and voltage waveforms, while the 4-channel S&H ADC synchronizes these measurements within 25 ns. QFN-44 packaging allows the inverter to fit inside the PV junction box at the module level.
Được đề xuất
Battery Charger Controller
The DSPIC33FJ16GS404T-I/ML implements CC/CV (constant-current/constant-voltage) charge profiles for Li-ion, lead-acid and NiMH chemistries with cell balancing control. The integrated op-amp monitors charge current with high accuracy, while the 10-bit ADC reads cell voltages at 500 ksps for fast safety cutoff. Industrial temperature range supports outdoor EV supply equipment (EVSE) and renewable-energy storage applications.
Được đề xuất
BLDC Motor / Fan Control
For low-voltage brushless DC (BLDC) fans and pumps, the DSPIC33FJ16GS404T-I/ML executes sensorless Field-Oriented Control (FOC) or trapezoidal commutation using its DSP engine and high-resolution PWM. The integrated comparators detect back-EMF zero-crossings for sensorless startup, while the 4-channel S&H ADC samples phase currents synchronously. The compact QFN-44 (8x8) footprint fits inside the motor housing for integration with the impeller assembly.
Được đề xuất
Uninterruptible Power Supply (UPS) Controller
In UPS systems, the DSPIC33FJ16GS404T-I/ML controls the inverter stage that converts battery DC to AC mains-equivalent output, while supervising battery health. The DSP engine computes the SPWM or SVPWM waveform in real time, the integrated op-amp monitors battery current, and the 16 KB Flash stores the inverter control plus battery-management firmware. The industrial temperature range and 3.3 V operation simplify the auxiliary power supply of the UPS module.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ16GS404T-I/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC33FJ16GS404T-50I/ML | DSPIC33FJ16GS404-50I/ML | DSPIC33FJ16GS404-I/ML | DSPIC33FJ16GS404T-E/ML | DSPIC33FJ16GS402-I/MM |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 28-QFN (6x6 mm) - different |
| CPU Speed | 40 MIPS | 50 MIPS | 50 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Temperature | -40°C to +85°C (Industrial) | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +125°C (Extended) | -40°C to +85°C |
| PWM Channels | 4 (HRPWM 1.04 ns edge) | 4 | 4 | 4 | 4 | 2 |
| ADC | 10-bit, 500 ksps, 4 S&H | 10-bit, 500 ksps, 4 S&H | 10-bit, 500 ksps, 4 S&H | 10-bit, 500 ksps, 4 S&H | 10-bit, 500 ksps, 4 S&H | 10-bit, 500 ksps, 2 S&H |
| 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 |
Bảo phân biệt quan trọng
- Single-cycle DSP engine with integrated SMPS peripherals (vsDSPIC33FJ16GS402-I/MM (28-QFN))
- 40 MIPS in industrial temperature range (vsDSPIC33FJ16GS404T-50I/ML)
- Integrated op-amp and 4 comparators (vsDSPIC33FJ16GS404T-E/ML (extended temperature))
Ghi chú thiết kế
The QFN-44 (8x8 mm) package of the DSPIC33FJ16GS404T-I/ML dissipates up to ~0.5-1 W when the CPU runs at 40 MIPS with all peripherals active. Estimate: at VDD=3.3V, IDD=20mA core + 30mA peripherals + ADC current, total power is ~0.16 W. To keep the junction temperature below 125°C at industrial ambient 85°C, the exposed pad must be soldered to a ground copper pour of at least 1 square inch with thermal vias. Without the exposed pad soldered, thermal resistance rises sharply and the device may overheat in closed enclosures.
Place 100 nF + 10 µF ceramic decoupling capacitors as close as possible to every VDD/VSS pin pair. For the analog supply AVDD/AVSS, add a ferrite bead or small inductor (e.g., BLM18AG601SN1) to isolate analog from digital noise, with a separate 10 µF + 100 nF on the AVDD pin. Route the crystal traces (OSC1/OSC2) short and symmetric, with a ground guard ring, to avoid jitter on the 50 MHz internal oscillator reference.
When configuring the high-speed PWM module, the PWM time base must be clocked faster than the switching frequency / 2 to avoid skipped pulses. The integrated op-amp has a finite input offset (typically ±3 mV); for high-precision current sensing in PFC applications, calibrate the offset in software at startup. The MCLR pin must NOT be left floating - tie to VDD through a 10 kΩ resistor to prevent spurious resets during power-up.
Keep analog input traces (AN0-AN9) short and away from PWM switching traces to minimize noise coupling. The PWM output traces should be wide (≥0.5 mm) to handle peak currents and routed with a ground return path. Place the exposed pad (EP) of the QFN on a single continuous ground pour; thermal vias should be on a 1.0-1.2 mm grid in the EP area.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40°C to +85°C operating range. The -E (Extended) variant offers -40°C to +125°C for harsher environments. Not AEC-Q100 qualified - choose dsPIC33F AEC-Q100 variants (separate ordering code) for automotive.
