DSPIC33FJ16GS502-50I/SO - 16-bit SMPS DSC, 50 MIPS, 28-SOIC | Microchip
MPN: DSPIC33FJ16GS502-50I/SO ✓ فعالDSPIC33FJ16GS502-50I/SO جائزہ
A Digital Signal Controller is a class of embedded processor that fuses a microcontroller's deterministic interrupt-driven control architecture with a digital signal processor's MAC engine and single-cycle hardware loop buffer. In the broader embedded hierarchy, the DSC sits between a general-purpose MCU and a standalone DSP, making it well suited to applications that simultaneously require sensor sampling, fast arithmetic on filtered variables, and tight feedback control. The dsPIC33F family, of which the DSPIC33FJ16GS502 is a member, was specifically engineered for digital power conversion, with peripheral sets that include high-speed PWM, high-speed ADC, and analog comparators tightly coupled to the CPU for sub-microsecond control-loop latency.
Key features of the DSPIC33FJ16GS502-50I/SO include up to four high-speed PWM channels with 1.04 ns resolution, two 10-bit DAC outputs for slope compensation or reference generation, four high-speed analog comparators for cycle-by-cycle current limiting, and a 10-bit ADC with a 4 Msps conversion rate. The 28-pin SOIC package exposes the full SMPS-oriented peripheral set while fitting into designs where board height is constrained and through-hole or quad-pack alternatives are not desired. Industrial temperature range of -40C to +85C is supported by the -50I suffix.
Typical applications include digitally controlled AC/DC power supplies, isolated DC/DC converters using peak-current-mode or average-current-mode control, bridgeless PFC stages, solar micro-inverters, digital welding power sources, and uninterruptible power systems. The high-speed analog comparator block enables cycle-by-cycle over-current protection that trips within a single PWM period, a feature that is essential when controlling SiC, GaN, or high-current silicon MOSFET switching stages where protection latency directly affects system reliability. Companion products in a typical design include a Microchip MCP16311 or MCP19114 analog front-end, gate-driver ICs such as the MCP14 family, and current-sense amplifiers built from low-offset op-amps such as the MCP6C04.
When designing with the DSPIC33FJ16GS502-50I/SO, ensure that the AVSS pin is tied to a clean analog ground return that does not share a path with high-di/dt switching currents, since the integrated ADC and comparators rely on a low-noise reference for accurate current sensing. The internal LDO regulator that supplies the core from VDD must be bypassed with a 10 microfarad ceramic capacitor placed within 5 mm of the VCAP pin; without this capacitor the part will not start up reliably. Programming is supported through the device's ICSP interface and the JTAG boundary-scan port, both accessible via Microchip's MPLAB X IDE and the MPLAB ICD 3 or PICkit 4 in-circuit debugger.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, providing a single reference for engineers evaluating the DSPIC33FJ16GS502-50I/SO for digital power designs.
کے لیے ڈراپ اِن متبادل DSPIC33FJ16GS502-50I/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں DSPIC33FJ16GS502-50I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف ADC, Package, Analog Comparators, Core Architecture, Mounting Type.
DSPIC33FJ16GS502-50I/MM
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
DSPIC33FJ16GS502T-50I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →DSPIC33FJ06GS502-50I/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
DSPIC33FJ16GS402-50I/SP
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →DSPIC33FJ16GS502-50I/MX
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
DSPIC33FJ16GS502-H/SP
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →DSPIC33FJ16GS502-50I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | dsPIC33F (16-bit DSC with DSP engine) |
| CPU Speed | 50 MIPS at 50 MHz CPU clock |
| Program Memory (Flash) | 16 KB |
| Data RAM | 2 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| High-Speed PWM Channels | 4 outputs with 1.04 ns resolution |
| High-Speed Analog Comparators | 4 |
| 10-bit DAC Outputs | 2 |
| ADC | 10-bit, up to 4 Msps |
| Timers | 3 (16-bit) |
| External Interrupts | 3 |
| پیکیج | 28-pin SOIC (wide body, 300 mil) |
| آپریٹنگ درجہ حرارت رینج | -40 C to +85 C (industrial, -I suffix) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
| Programming/Debug Interface | ICSP and JTAG (IEEE 1149.2) |
DSPIC33FJ16GS502-50I/SO پن کنفیگریشن
| پن 1 | MCLR — Master Clear (active-low device reset) |
| پن 2 | RA0 — GPIO / analog input AN0 |
| پن 3 | RA1 — GPIO / analog input AN1 |
| پن 4 | RA2 — GPIO / analog input AN2 |
| پن 5 | RB0 — GPIO / PWM2H |
| پن 6 | RB9 — GPIO |
| پن 7 | RB10 — GPIO |
| پن 8 | VSS1 — Digital ground |
| پن 9 | RB1 — GPIO / PWM2L |
| پن 10 | RB2 — GPIO |
| پن 11 | RB3 — GPIO |
| پن 12 | RB4 — GPIO |
| پن 13 | VDD1 — Digital supply (3.0-3.6 V) |
| پن 14 | RB8 — GPIO |
| پن 15 | RB15 — GPIO |
| پن 16 | PWM1H — PWM1 high-side output |
| پن 17 | PWM1L — PWM1 low-side output |
| پن 18 | C1IN- — Analog comparator 1 inverting input |
| پن 19 | C1IN+ — Analog comparator 1 non-inverting input |
| پن 20 | VCAP — Internal LDO output (bypass 10 uF) |
| پن 21 | AVSS — Analog ground (clean return) |
| پن 22 | AVDD — Analog supply (3.0-3.6 V) |
| پن 23 | C2IN- — Analog comparator 2 inverting input |
| پن 24 | C2IN+ — Analog comparator 2 non-inverting input |
| پن 25 | DAC1 — 10-bit DAC 1 output |
| پن 26 | DAC2 — 10-bit DAC 2 output |
| پن 27 | C3IN+/C4IN+ — Analog comparators 3 and 4 non-inverting input |
| پن 28 | PWM2H/PWM2L — PWM2 outputs (multiplexed) |
عام استعمالات
DSPIC33FJ16GS502-50I/SO کے لیے موزوں ہے 7 ایپلیکیشنs: Digitally Controlled AC/DC Power Supply, Isolated DC/DC Converter with Digital Current-Mode Control, Power Factor Correction (PFC) Stage, Uninterruptible Power Supply (UPS) Control, Solar Micro-Inverter / Power Optimizer, Digital Welding Power Source, Class-D Audio Amplifier Power Stage Controller.
Digitally Controlled AC/DC Power Supply
The DSPIC33FJ16GS502-50I/SO is purpose-built for digital control of AC/DC converters operating from universal mains (90 V to 264 V AC) where a downstream isolated stage produces 5 V to 48 V DC rails. The four high-speed PWM outputs at 1.04 ns resolution drive the primary-side MOSFET or GaN switch, while the four integrated high-speed analog comparators perform cycle-by-cycle peak-current limiting, which is essential when protecting against transformer saturation during start-up and overload transients. The 10-bit DAC outputs generate programmable slope-compensation ramps that adapt automatically to duty-cycle changes in CCM/DCM transitions, eliminating the analog RC mismatch of discrete slope-compensation circuits. The 16 KB Flash comfortably stores a multi-loop PID compensator plus input-voltage feed-forward, brown-out recovery, and PMBus-compatible telemetry. Total BOM reduction compared to a UCC28C42 analog controller plus companion MCU is typically two to three ICs and a substantial analog compensation network.
تجویز کردہ
Isolated DC/DC Converter with Digital Current-Mode Control
In an isolated point-of-load or intermediate-bus DC/DC converter, the DSPIC33FJ16GS502-50I/SO executes average-current-mode or peak-current-mode control loops with sub-microsecond latency. The 10-bit ADC at 4 Msps samples primary-side current and voltage simultaneously, while the integrated comparators provide hardware-overcurrent protection that can shut down the PWM within a single switching period. Its 50 MIPS core runs the digital compensator plus adaptive dead-time insertion, eliminating transformer-saturation risk and improving efficiency by 1-3 percent compared to fixed-dead-time analog designs. The 2 KB SRAM holds the state-machine buffers and IIR filter tap lines needed for accurate ripple injection without aliasing. Industrial-grade 28-SOIC packaging suits dense through-hole-replacement layouts where the design must pass 2.5 kV isolation while staying below 25 mm in component height.
تجویز کردہ
Power Factor Correction (PFC) Stage
The DSPIC33FJ16GS502-50I/SO is a strong fit for CCM or DCM boost-PFC front-end stages targeting compliance with EN61000-3-2 and similar harmonic standards. Its four PWM channels drive the boost switch plus auxiliary synchronous-rectification logic, while the dedicated high-speed comparators detect inductor zero-current and zero-crossing events required for valley-switching DCM techniques that improve light-load efficiency. The two 10-bit DACs generate programmable reference and slope-compensation waveforms, replacing what would otherwise be two external DAC ICs. With 50 MIPS, the controller can execute sinusoidal-current-shaping math plus input-voltage feed-forward plus adaptive switching-frequency control without leaving headroom for DSP bottlenecks. The -40 C to +85 C industrial temperature range supports outdoor LED-driver and industrial-PFC applications where ambient temperatures regularly exceed 70 C.
تجویز کردہ
Uninterruptible Power Supply (UPS) Control
In line-interactive and online UPS designs, the DSPIC33FJ16GS502-50I/SO coordinates battery-mode transfer, inverter control, and battery-charging regulation from a single IC. The high-speed analog comparators sense inverter output current for instantaneous over-current and short-circuit protection, while the four PWM outputs drive a full-bridge inverter stage at switching frequencies up to 500 kHz with adaptive dead-time insertion handled in firmware. The 16 KB Flash stores state-machine logic for grid/battery transfer plus sine-wave lookup tables plus closed-loop voltage regulation, and the 10-bit ADC samples both DC-bus voltage and AC output voltage with sub-millisecond update rate. The 28-SOIC footprint fits into a compact power-module form factor where board area is at a premium and designers prefer one IC over separate MCU plus DSP partitions.
تجویز کردہ
Solar Micro-Inverter / Power Optimizer
The DSPIC33FJ16GS502-50I/SO fits small-scale photovoltaic micro-inverter and module-level power-optimizer designs where the goal is to harvest maximum energy from individual PV modules while providing arc-fault detection and rapid-shutdown per UL1741 and NEC 2017. Its high-speed comparators support arc-fault detection by detecting high-frequency noise on the DC string, while the four PWM outputs drive a high-frequency isolated DC/DC stage feeding a grid-tie inverter. The 50 MIPS CPU performs per-module MPPT (Maximum Power Point Tracking) at sub-second intervals, and the 10-bit ADC samples module voltage, current, and temperature for thermal-derating algorithms. The industrial -40 C to +85 C rating handles outdoor junction-box ambient conditions without needing a thermally isolated enclosure.
تجویز کردہ
Digital Welding Power Source
The DSPIC33FJ16GS502-50I/SO is used in inverter-based MIG, TIG, and stick-welding power sources where arc stability depends on a fast digital control loop regulating current and voltage. The high-speed analog comparators detect arc ignition and short-circuit transitions within a single PWM period, and the four PWM outputs drive a full H-bridge inverter stage at switching frequencies between 20 kHz and 100 kHz. The 10-bit ADC samples arc voltage and current at 4 Msps, enabling fine-grained control over pulse welding waveforms (peak current, background current, pulse frequency) for premium process quality. The 16 KB Flash stores waveform presets plus adaptive-process algorithms, and the 28-SOIC footprint is small enough to fit into the auxiliary-control PCB alongside the high-current power stage without crowding the high-voltage isolation barriers.
تجویز کردہ
Class-D Audio Amplifier Power Stage Controller
The DSPIC33FJ16GS502-50I/SO can act as the modulator and protection controller for high-efficiency Class-D audio amplifiers, where the four high-speed PWM outputs drive a complementary MOSFET output stage via a gate driver and the high-speed analog comparators perform over-current and over-temperature protection on the speaker lines. The 50 MIPS CPU runs a self-oscillating or fixed-frequency PWM modulator with closed-loop feedback through the 10-bit ADC, while the 2 KB SRAM holds buffer state for the audio sample pre-processing and DC-blocking filters. The 28-SOIC package suits consumer-audio and professional-installation designs where thermal management of the output stage is decoupled from the small controller footprint.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا DSPIC33FJ16GS502-50I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | DSPIC33FJ16GS502-50I/MM | DSPIC33FJ16GS502T-50I/SO | DSPIC33FJ06GS502-50I/SO | DSPIC33FJ16GS402-50I/SP | DSPIC33FJ16GS502-50I/MX |
|---|---|---|---|---|---|---|
| Package | 28-pin SOIC | 28-pin QFN (MM) | 28-pin SOIC (tape and reel) | 28-pin SOIC | 28-pin SPDIP (SP) | 28-pin PQCC28 (MX) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS |
| High-Speed PWM Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| High-Speed Analog Comparators | 4 | 4 | 4 | 4 | 4 | 4 |
| 10-bit DAC Outputs | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
اہم امتیازی خصوصیات
- Four integrated high-speed analog comparators eliminate external current-sense comparator ICs (بمقابلہDSPIC33FJ06GS502-50I/SO)
- Dedicated SMPS peripheral set with 1.04 ns PWM resolution in 28 SOIC (بمقابلہDSPIC33FJ16GS402-50I/SP)
- Two 10-bit DAC outputs for slope compensation and analog reference (بمقابلہDSPIC33FJ16GS502-50I/MX)
ڈیزائن نوٹس
Place a low-ESR 10 microfarad ceramic capacitor on the VCAP pin (pin 20) within 5 mm of the IC, plus a parallel 100 nF ceramic for high-frequency decoupling. The internal 1.8 V core LDO will not start up reliably without this bulk capacitance. Use a wide (>= 0.5 mm) trace from VCAP to the capacitor, and route VCAP on the top layer with no vias in the connection path.
Tie AVSS (pin 21) to a clean analog ground island that returns directly to the power-stage bulk capacitor, separate from the noisy digital VSS (pin 8) return path. The ADC and analog comparators share an internal ground reference; if the analog and digital grounds share a high-di/dt switching-current return, current-sense measurements will pick up switching noise of 50 to 100 mV, which corrupts the digital control loop.
Do not leave unused comparator inputs floating - tie unused C*IN+ and C*IN- pins to AVSS through a 10 kohm resistor. Floating comparator inputs cause spurious PWM trips that shut down the converter in normal operation. The PWM outputs default to active-low at reset, so an external pull-down on the gate-driver input is recommended to keep the power stage off until firmware takes control.
Estimated: At 50 MIPS with peripherals active, the DSPIC33FJ16GS502-50I/SO in 28-SOIC dissipates approximately 200 mW. With a theta_JA of approximately 75 C/W for the SOIC-28 wide-body package, junction temperature rise above 25 C ambient is roughly 15 C, well within the 125 C maximum. Even at 85 C ambient, the part operates with adequate margin; no heatsink is required for normal SMPS control designs.
تعمیل کی معلومات
RoHS compliant per Microchip product page; REACH compliance standard for Microchip dsPIC33F family. AEC-Q100 not applicable - this is a general-purpose industrial MCU/DSC, not an automotive-qualified part. Choose AEC-Q100 qualified dsPIC33CK variants for automotive designs.
