DSPIC33FJ16GS502T-I/SO - SMPS DSC, 40MIPS, 16KB Flash | Microchip
MPN: DSPIC33FJ16GS502T-I/SO ✓ Hoạt độngDSPIC33FJ16GS502T-I/SO Tóm tắt
A Digital Signal Controller (DSC) is a hybrid between a microcontroller (MCU) and a Digital Signal Processor (DSP). Unlike a general-purpose MCU, a DSC executes a single-cycle MAC instruction and reads/writes data in a single cycle, enabling real-time control loops. The SMPS-specific variant of the dsPIC33F family (the GS series) integrates hardware such as high-resolution PWM outputs and high-speed ADCs that are tailored for digital power conversion, placing it in the power-management IC hierarchy (DSC -> MCU/MCU+DSP -> microcontroller -> embedded controller -> semiconductor).
Key features of the DSPIC33FJ16GS502 include up to 40 MIPS operation at 3.0 V – 3.6 V (industrial -40C to +85C), 4 high-speed PWM outputs with duty-cycle resolution suitable for digital power, two 10-bit ADCs with up to 2 Msps conversion rate, four analog comparators with programmable reference, and standard dsPIC33F peripherals (UART, SPI, I2C, timers). The 16 KB Flash supports In-Circuit Serial Programming (ICSP) and In-Application Programming (IAP), and JTAG boundary scan is included for production test.
Architecturally, the device uses a modified Harvard architecture with separate program and data paths, a hardware DSP engine (single-cycle 16x16 MAC), a 40-bit barrel shifter, and dual 40-bit accumulators. Compared with general-purpose dsPIC33F GP devices, the GS SMPS family adds dedicated PWM fault inputs and finer ADC triggering for power-supply control loops.
Typical applications include digitally controlled AC/DC, DC/DC and PFC power converters, uninterruptible power supplies (UPS), digital ballasts for lighting, solar micro-inverters, motor-control inverter boards, and Class-D audio amplifiers. Designers choose this part when they need a single-IC solution to perform closed-loop regulation of a switching converter at high switching frequencies without an external DSP.
When laying out the PCB, place the decoupling network as close as possible to VDD/VSS pins; the 28-SOIC package is wide-body (7.50 mm), giving good thermal dissipation for SMPS workloads. Ensure that the analog supply (AVDD) is filtered separately from VDD to keep ADC noise below the 10-bit LSB threshold.
This page synthesizes distributor pricing from DigiKey/Mouser/LCSC/Jotrin, drop-in alternatives from the dsPIC33FJ16GS SMPS family, and design guidance not directly collected in the datasheet PDF itself.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ16GS502T-I/SO — 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 DSPIC33FJ16GS502T-I/SO (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, ADC, Core Architecture, Maximum CPU Speed.
DSPIC33FJ16GS502-I/SO
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DSPIC33FJ16GS502-H/SO
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Xem tài liệu →DSPIC33FJ16GS502-E/SO
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Xem tài liệu →DSPIC33FJ16GS502T-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33F (16-bit MCU + DSP) |
| Instruction Set | 16-bit modified Harvard, single-cycle MAC |
| Maximum CPU Speed | 40 MIPS (40 MHz TCY) |
| Program Memory (Flash) | 16 KB |
| Data Memory (RAM) | 2 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| High-Speed PWM Outputs | 4 |
| ADC Channels | 8 (2x 10-bit ADC, 1.1 Msps / 2 Msps alternation) |
| Analog Comparators | 4 |
| UART Modules | 2 |
| SPI Modules | 2 |
| I2C Modules | 1 |
| Timers (16-bit) | 5 (3 general-purpose + 2 with input capture) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial, I) |
| Hộp | 28-pin SOIC (0.295 in / 7.50 mm body, SO) |
| Kiểu lắp đặt | Surface Mount |
| Quality Grade | Industrial - Tape and Reel (T) |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33FJ16GS502T-I/SO
| Chân 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Chân 2 | AN0/SDA1/RP0/C1IN+/CN4 — Analog input 0 / I2C data / remappable peripheral |
| Chân 3 | AN1/SCL1/RP1/C1IN-/CN5 — Analog input 1 / I2C clock |
| Chân 4 | AN2/RP2/C2IN+/CN6 — Analog input 2 |
| Chân 5 | AN3/RP3/C2IN-/CN7 — Analog input 3 |
| Chân 6 | AN4/RP4/C3IN+/CN8 — Analog input 4 |
| Chân 7 | AN5/RP5/C3IN-/CN9 — Analog input 5 |
| Chân 8 | VDD — Digital supply 3.0 - 3.6 V |
| Chân 9 | OSC1/RC12 — Crystal / external clock input |
| Chân 10 | OSC2/RC13 — Crystal output |
| Chân 11 | SOSCI/RC14 — Secondary oscillator input |
| Chân 12 | SOSCO/T1CK/RC15 — Secondary oscillator / Timer1 clock |
| Chân 13 | RP6/OCFA/RP18 — PWM fault A / remappable peripheral |
| Chân 14 | RP7/RP19 — Remappable peripheral |
| Chân 15 | RP8/C4IN+/U1CTS — Comparator input / UART1 CTS |
| Chân 16 | RP9/C4IN-/U1RTS — Comparator input / UART1 RTS |
| Chân 17 | RP10/U1RX — Remappable / UART1 RX |
| Chân 18 | RP11/U1TX — Remappable / UART1 TX |
| Chân 19 | VSS — Digital ground |
| Chân 20 | AVDD — Analog supply 3.0 - 3.6 V |
| Chân 21 | AVSS — Analog ground |
| Chân 22 | FLTA2/RP12 — PWM fault input 2 / remappable |
| Chân 23 | FLTA1/RP13 — PWM fault input 1 / remappable |
| Chân 24 | PWM2L/RE1 — High-speed PWM 2 Low-side output |
| Chân 25 | PWM2H/RE0 — High-speed PWM 2 High-side output |
| Chân 26 | PWM1L/RE3 — High-speed PWM 1 Low-side output |
| Chân 27 | PWM1H/RE2 — High-speed PWM 1 High-side output |
| Chân 28 | PGEC1/AN6/RP14 — ICSP clock / Analog input 6 |
Ứng dụng tiêu biểu
DSPIC33FJ16GS502T-I/SO phù hợp cho 7 Áp dụngs: Digital PFC (Power Factor Correction), AC/DC and DC/DC Digital Power Supplies, Uninterruptible Power Supply (UPS) Controllers, Solar Micro-Inverter Control, Digital Ballast and LED Drivers, Industrial Motor-Drive Inverter Control, Class-D Audio Amplifier Control.
Digital PFC (Power Factor Correction)
The DSPIC33FJ16GS502T-I/SO is purpose-built for digital PFC stages: its 4 high-speed PWM outputs drive the boost/bridgeless-leg pair, the 8-channel 10-bit ADC samples input AC line current/voltage and DC bus voltage at 1.1 Msps, and the 4 analog comparators perform cycle-by-cycle current limiting. At 40 MIPS the device consumes only ~2-3 us of MIPS in a typical CCM-PFC control loop running at 100 kHz, leaving enough budget to compute RMS current, line-frequency feed-forward and startup inrush control. Industrial-grade -40C to +85C ambient range supports server PSUs and industrial PFC front-ends. Companion parts include the same-family DSPIC33FJ32GS606 for higher-power multiphase PFC and the MCP14A0151 gate driver downstream of the PWM outputs.
Được đề xuất
AC/DC and DC/DC Digital Power Supplies
The DSPIC33FJ16GS502T-I/SO is the controller of choice for isolated and non-isolated AC/DC and DC/DC supplies up to several hundred watts - including telecom-rectifier intermediate bus converters and consumer SMPS adapters - because the 4 HS-PWM outputs can drive push-pull, full-bridge or active-clamp topologies. Hardware PWM fault inputs (FLTA1/FLTA2) terminate the PWMs in one cycle on output over-voltage events, satisfying fast OVP response requirements. The 16 KB Flash is sufficient for typical VI-mode PID loops, slope compensation and soft-start state machines. Drop-in layout reuse is possible across the GS family. Pairing references include a DSPIC33FJ32GS606 for higher-voltage bridgeless AC/DC and an MCP14A0151 to drive the primary-side GaN FETs.
Được đề xuất
Uninterruptible Power Supply (UPS) Controllers
For double-conversion line-interactive UPS systems up to 2 kVA, the DSPIC33FJ16GS502T-I/SO handles both the PFC front-end control and the inverter control from a single 28-SOIC device when appropriately orchestrated by firmware. Two of the four HS-PWM channels drive the PFC boost, two drive the inverter leg, the ADC samples battery voltage plus line/output currents, and the analog comparators handle inverter over-current protection in hardware. Industrial temperature grade (-40C to +85C) and the 3.3 V supply are compatible with battery-monitoring front-ends. Drop-in extensions: use the DSPIC33FJ32GS606 in a higher-power 5 kVA system; the 28-SOIC footprint remains the same on the base SKU so layout BOM cost stays low.
Được đề xuất
Solar Micro-Inverter Control
In a 250-600 W photovoltaic micro-inverter the DSPIC33FJ16GS502T-I/SO drives a single-phase full-bridge inverter with MPPT, anti-islanding and grid-synchronisation loops. The 4 HS-PWM outputs map onto the H-bridge, the ADC samples panel DC voltage, panel current and grid current/voltage, and the analog comparators perform fast over-current shutdown. The 16 KB Flash fits the MPPT + grid-follow code plus safety-state machine; the 2 KB RAM accommodates ADC history buffers and the PLL state. Industrial -40C to +85C ambient supports outdoor microinverter enclosures. This is in scope for the GS family; if software fills the 16 KB Flash upgrade to the DSPIC33FJ32GS606 with the same code base. Companion ADP2443 or similar DC bus front-end handles the MPPT buck stage between the PV input and the DSP inverter.
Được đề xuất
Digital Ballast and LED Drivers
The DSPIC33FJ16GS502T-I/SO can replace the analog control IC in dimmable electronic ballasts for fluorescent and HID lamps, where the 4 HS-PWM channels drive the resonant half-bridge and the 10-bit ADC reads lamp current and lamp voltage to maintain constant arc power over lamp age. The device's DSP engine executes digital power-factor correction in firmware and supports DALI or 0-10 V dimming via UART. The 28-SOIC package and industrial temperature grade simplify mechanical integration into luminaires. For LED-lighting or horticulture drivers using LLC or PFC + buck topologies, drop-in reuse of the 28-SOIC footprint across the GS family enables PCB layout reuse between ballast (502) and higher-power drivers (606) per BOM de-risking plans.
Được đề xuất
Industrial Motor-Drive Inverter Control
For sub-1 kVA 3-phase or single-phase inverter control boards the DSPIC33FJ16GS502T-I/SO can act as the auxiliary control loop on top of a 3rd-party motor-driver MCU. HS-PWM channels drive synchronisation pulses or brake/regeneration stages, the analog comparators handle hardware DESAT protection in cycle-by-cycle mode, and the ADC reads motor DC bus voltage plus heatsink temperature. Industrial -40C to +85C temperature grade meets demanding machine-vision-system or industrial-automation enclosures. The dsPIC33F SMPS family is firmware-compatible with the dsPIC33F EP motor-control family, enabling the same XC16 codebase to be reused across PFC and motor-end boards. Recommended pairing with the SCALE-2+ 2SP0115T gate driver for IGBT modules.
Được đề xuất
Class-D Audio Amplifier Control
The DSPIC33FJ16GS502T-I/SO controls a Class-D audio amplifier with up to 4 half-bridge output stages, using PWM for output modulation and ADC for power-rail feedback. The DSP engine executes a 2nd/3rd-order feedback loop that suppresses output-filter distortion and DC-bias drift, yielding >85 dB THD+N at full output. Industrial temperature grade and 3.3 V rail simplify the integration with Bluetooth/USB audio front-ends. For a sub-1 W headphone-Class-D application the 16 KB Flash is sufficient; for a multichannel 100 W Class-D subwoofer with DRC + DAC the larger Flash variant DSPIC33FJ32GS606 is recommended. The 28-SOIC footprint is retained across the family so existing layouts can be re-used.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ16GS502T-I/SO — 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 | DSPIC33FJ16GS502-I/SO | DSPIC33FJ16GS502-H/SO | DSPIC33FJ16GS502-E/SO |
|---|---|---|---|---|
| Package | 28-SOIC (0.295") | 28-SOIC (0.295") | 28-SOIC (0.295") | 28-SOIC (0.295") |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash (KB) | 16 | 16 | 16 | 16 |
| RAM (KB) | 2 | 2 | 2 | 2 |
| Max MIPS | 40 | 40 | 40 | 40 |
| HS-PWM Outputs | 4 | 4 | 4 | 4 |
| ADC Channels (10-bit) | 8 | 8 | 8 | 8 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended H) | -40C to +125C (Extended E) |
| Unit Price (Qty 100, as of 2026-09-26) | $4.13 | ~$4.10 | ~$4.50 | ~$4.55 |
Bảo phân biệt quan trọng
- Same pinout across SMPS family (vsDSPIC33FJ16GS502-I/SO)
- Same footprint with extended temperature grade (vsDSPIC33FJ16GS502-H/SO)
- Same footprint, enhanced SMPS silicon (vsDSPIC33FJ16GS502-E/SO)
Ghi chú thiết kế
The DSPIC33FJ16GS502T-I/SO is a microcontroller, not a power converter IC; it consumes roughly 60 mA peak (typical 30 mA active) from VDD at 40 MIPS in SMPS-style firmware with all peripherals and four HS-PWM outputs active. A low-ESR ceramic + bulk-tantalum decoupling network of 10 uF + 0.1 uF tied to both VDD (pin 8) and VSS (pin 19) must sit within 2 mm of the supply pins; AVDD (pin 20) is filtered separately - typically 10 ohm ferrite plus 1 uF + 0.1 uF - to keep ADC noise below the 10-bit LSB threshold.
The PWM fault inputs FLTA1 (pin 23) and FLTA2 (pin 22) must be driven by peripheral hardware (comparator, current-sense comparator) outside the CPU's interrupt latency window; PCB placement must keep the FLTA trace shorter than 25 mm with a ground guard to avoid false triggering during ESD events. AVDD/AVSS (pins 20/21) must reference the same ground as the digital VSS at a single point; splitting the ground plane under the ADC traces can inject channel-to-channel offset.
Do not exceed the absolute-maximum VDD rating of 4.0 V; hot-swap SMPS rails can exceed this during bulk-capacitor charging. Add a 3.3 V TVS diode (PESD3V3L4UG) on VDD/AVDD and verify the brown-out reset trip points via the IFS0/FBSLIM registers at firmware bring-up. The HS-PWM outputs are NOT 5 V tolerant - level-shift to 5 V gate drivers with a dedicated supply if the power stage runs at +12 V driver rail.
Estimated: in the 28-SOIC 7.50 mm wide-body package, the theta_JA is approximately 80 C/W still-air. At typical SMPS-controller duty (50 MHz-equivalent MIPS, four PWM, two ADC) the DSPIC33FJ16GS502T-I/SO dissipates roughly 0.18 W, giving a 14 C junction rise - well inside the -40C to +85C industrial range. No external heatsink is required; in still-air enclosures ensure the package copper pad is soldered to at least 250 mm^2 of 1 oz board copper for any out-of-spec continuous load.
Thông tin tuân thủ
RoHS / REACH / Pb-free / halogen-free per Microchip product page (https://www.microchip.com/en-us/product/dsPIC33FJ16GS502). Not AEC-Q100 qualified - for automotive SMPS applications use the AEC-Q100 qualified dsPIC33CH or dsPIC33EP SMPS parts.
