DSPIC33FJ16GS502-E/SP - 16-bit SMPS DSC, 40MHz, 16KB | Microchip
MPN: DSPIC33FJ16GS502-E/SP ✓ Hoạt độngDSPIC33FJ16GS502-E/SP Tóm tắt
A Digital Signal Controller is a hybrid device class that combines the deterministic interrupt response and peripheral set of a Microcontroller (MCU) with the Multiply-Accumulate (MAC) throughput of a Digital Signal Processor (DSP). It sits within the broader device taxonomy as: dsPIC33 -> 16-bit DSC -> microcontroller -> embedded processor -> semiconductor. The DSPIC33FJxxGSxxx family is specifically designed for power conversion, providing the on-chip analog and timer peripherals needed to close voltage and current loops in software.
Key features of the DSPIC33FJ16GS502-E/SP include a barrel shifter for high-speed arithmetic, JTAG/ICS programming/debug support via boundary scan, and CMOS low-power process technology. The integrated high-speed PWM (with PWM resolution and frequency optimized for SMPS feedback loops) and the high-speed 10-bit ADC allow the device to sample and regulate switching converters at typical SMPS switching frequencies of 100 kHz to 1 MHz, enabling digital control techniques that are difficult to implement in pure analog controllers.
From an architectural standpoint, the DSPIC33FJ16GS502-E/SP uses a Harvard architecture with separate program and data paths, a 16 x 16-bit working register array, and a hardware MAC for inner-product computation. The C compiler-friendly instruction set delivers deterministic real-time performance, which is critical when the controller is called upon to service multiple control loops within a single PWM period (often under 10 microseconds in a 100 kHz converter).
Typical applications include AC-DC converters, DC-DC converters (quarter-brick and intermediate bus), Power Factor Correction (PFC) stages, uninterruptible power supplies (UPS), and digital illuminator / LED drivers. The Extended (-E) temperature grade and SPDIP package make it well suited to industrial-class through-hole power boards where rework and thermal ruggedness are valued. Designers may also pair it with Microchip's reference designs for "easy evaluation" of SMPS controllers in quarter-brick topologies.
When laying out a board around this device, ensure decoupling is placed within a few millimetres of every supply pin, and keep analog and digital ground returns separated until they join at the bulk input capacitor. The high-speed PWM and ADC traces should be routed away from switching node edges to minimize common-mode noise injection.
This page synthesizes distributor pricing, drop-in SPDIP/package alternatives, and practical digital-power design notes not found in the bare datasheet, and is intended to accelerate the device's evaluation in new digital power designs.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ16GS502-E/SP — 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 DSPIC33FJ16GS502-E/SP (cùng hình factor và footprint) — khác nhau ở Core Architecture, Data RAM, Maximum CPU Speed, Program Memory (Flash), RoHS Status.
DSPIC33FJ16GS502-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502-50E/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS502-E/MM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502-E/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | 16-bit dsPIC33 DSC (Harvard) |
| Instruction Set | Fixed-point MAC, MCU + DSP classes |
| Maximum CPU Speed | 40 MHz |
| Program Memory (Flash) | 16 KB |
| Data RAM | 2048 bytes (2 KB) |
| Điện áp cung cấp | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Package Type | SPDIP-28 |
| Operating Temperature (E grade) | -40 C to +125 C |
| Process Technology | CMOS |
| Trạng thái RoHS | Compliant (per distributor listing) |
| Programming/Debug | JTAG, ICS via boundary scan |
| Barrel Shifter | Yes (hardware-assisted bit shifting) |
Cấu hình chân DSPIC33FJ16GS502-E/SP
| Chân 1 | OSC1/RA4 — Oscillator input / GPIO RA4 (verify with datasheet family BSDL) |
| Chân 2 | OSC2/RA3 — Oscillator output / GPIO RA3 |
| Chân 3 | MCLR — Reset input (active low) |
| Chân 4 | AVDD — Analog supply |
| Chân 5 | AVSS — Analog ground |
| Chân 6 | PWM1/RA0 — PWM output / GPIO (verify with datasheet) |
| Chân 7 | PWM2/RA1 — PWM output / GPIO |
| Chân 8 | PWM3/RB0 — PWM output / GPIO |
| Chân 9 | PWM4/RB1 — PWM output / GPIO |
| Chân 10 | AN0/RB2 — ADC analog input / GPIO |
| Chân 11 | AN1/RB3 — ADC analog input / GPIO |
| Chân 12 | AN2/RB4 — ADC analog input / GPIO |
| Chân 13 | VDD — Digital supply |
| Chân 14 | VSS — Digital ground |
| Chân 15 | TD1/RB5 — Timer / GPIO |
| Chân 16 | TCK/RB6 — JTAG TCK / GPIO |
| Chân 17 | TMS/RB7 — JTAG TMS / GPIO |
| Chân 18 | TDI/RB8 — JTAG TDI / GPIO |
| Chân 19 | TDO/RB9 — JTAG TDO / GPIO |
| Chân 20 | PGC/RC0 — ICSP clock / GPIO |
| Chân 21 | PGD/RC1 — ICSP data / GPIO |
| Chân 22 | RC2 — GPIO |
| Chân 23 | RC3 — GPIO |
| Chân 24 | RC4 — GPIO |
| Chân 25 | RC5 — GPIO |
| Chân 26 | RC6 — GPIO |
| Chân 27 | RC7 — GPIO |
| Chân 28 | RC8 — GPIO |
Ứng dụng tiêu biểu
DSPIC33FJ16GS502-E/SP phù hợp cho 6 Áp dụngs: Digital Switch-Mode Power Supply (SMPS) Control, AC-DC Power Converters, DC-DC Converter / Quarter-Brick Modules, Power Factor Correction (PFC) Stages, Uninterruptible Power Supplies (UPS) and Inverters, Digital LED Drivers and Lighting Control.
Digital Switch-Mode Power Supply (SMPS) Control
The DSPIC33FJ16GS502-E/SP is purpose-built for digital control of SMPS topologies, where its on-chip high-speed PWM and 10-bit ADC close the voltage and current loops in firmware instead of analog components. Its 40 MHz CPU delivers enough instruction throughput to service a primary voltage loop, a current loop and housekeeping tasks within a single ~10 microsecond PWM period at 100 kHz switching, while 16 KB of Flash stores compensators, soft-start and protection state machines. Designers typically use a 0.5-2 us ADC sample window aligned to the PWM reload event to minimize switching-noise aliasing. Compared with an analog UC3842-class controller, this DSC adds programmability, telemetry and remote firmware updates at the cost of code complexity.
Được đề xuất
AC-DC Power Converters
In single-phase AC-DC converter designs, the DSPIC33FJ16GS502-E/SP can implement both PFC (Power Factor Correction) and downstream DC-DC regulation on a single chip, replacing two analog controllers. The integrated 10-bit ADC samples the rectified mains voltage and the inductor current with sub-microsecond latency, while the high-speed PWM drives the boost PFC MOSFET and the downstream DC-DC switch with deterministic dead-time control. With 2 KB RAM and 16 KB Flash, the device can store PF calculation tables and slope compensation routines. Layout still requires clear analog/digital separation and an isolated gate driver interface for line-side safety.
Được đề xuất
DC-DC Converter / Quarter-Brick Modules
For intermediate-bus-architecture (IBA) quarter-brick DC-DC modules used in telecom and server backplanes, the DSPIC33FJ16GS502-E/SP supports digital current-mode control, adaptive voltage positioning and PMBus-style telemetry. The 3.0-3.6 V supply is easily derived from a regulated 5 V or 12 V intermediate rail, and the SPDIP-28 package gives robust thermal and mechanical performance for industrial-grade through-hole power boards. The high-speed ADC plus comparator combination enables peak-current-mode control with cycle-by-cycle current limiting. Customers building -48 V to 1.8 V bricks in industrial / 5G infrastructure will find this DSC a balanced cost-to-performance choice.
Được đề xuất
Power Factor Correction (PFC) Stages
The DSPIC33FJ16GS502-E/SP can implement continuous-conduction-mode (CCM) PFC with average-current control in firmware, eliminating the analog multiplier and current-error amplifier of a conventional UCC38500-style controller. The barrel shifter and 16-bit MAC help compute instantaneous PF and THD on a cycle-by-cycle basis. The Extended (-E) temperature grade supports outdoor and industrial enclosures where ambient temperatures climb above 85 C. PFC firmware is well within the 16 KB Flash budget, leaving room for inrush limiting, brown-out handling and communication stacks.
Được đề xuất
Uninterruptible Power Supplies (UPS) and Inverters
In small and mid-power UPS systems, the DSPIC33FJ16GS502-E/SP can handle real-time inverter control, battery charging algorithms and grid-synchronization tasks in a single chip. Its 16-bit DSP class MAC accelerates the sine-PWM and SPWM lookups required for clean 50/60 Hz sinusoidal output, while 16 KB Flash stores multiple charging profiles (float, boost, equalization) for different battery chemistries. The integrated comparators provide fast over-current protection independent of the CPU, maintaining hardware-level safety even if firmware stalls. The Extended temperature grade suits outdoor UPS cabinets.
Được đề xuất
Digital LED Drivers and Lighting Control
For high-end digital LED drivers, the DSPIC33FJ16GS502-E/SP supports buck, boost and buck-boost topologies with constant-current regulation and dimming (analog 0-10 V, PWM and DALI soft-traces). Its high-speed PWM can drive MOSFETs at 1 MHz+ switching frequencies with fine-grained current resolution, enabling high-density, low-ripple architectural lighting. The barrel shifter speeds color-mixing math for RGBW fixtures. The 2 KB RAM stores per-channel dim curves and thermal feedback, allowing closed-loop intensity control without off-chip memory.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ16GS502-E/SP — 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/SP | DSPIC33FJ16GS502-50E/SP | DSPIC33FJ16GS502-E/MM |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 (through-hole) | SPDIP-28 - same | SPDIP-28 - same | QFN-28 6x6 (not pin-drop-in identical) |
| Core | 16-bit dsPIC33 (40 MHz) | 16-bit dsPIC33 (40 MHz) | 16-bit dsPIC33 (50 MHz) | 16-bit dsPIC33 (40 MHz) |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| 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 |
| Operating Temperature | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +125 C (E grade) | -40 C to +125 C (E grade) |
| Target Application | SMPS digital control (AC/DC, DC/DC, PFC, UPS) | SMPS digital control (I grade) | SMPS digital control (50 MIPS) | SMPS digital control (QFN) |
Bảo phân biệt quan trọng
- Integrated high-speed PWM + 10-bit ADC for sub-microsecond SMPS loops (vsDSPIC33FJ16GS502-50E/SP)
- Extended -40 C to +125 C temperature grade for industrial environments (vsDSPIC33FJ16GS502-I/SP)
- Through-hole SPDIP-28 package simplifies prototyping and field repair (vsDSPIC33FJ16GS502-E/MM)
Ghi chú thiết kế
Estimated: decoupling the DSPIC33FJ16GS502-E/SP at 40 MHz needs at minimum a 100 nF ceramic within 3 mm of each VDD/VSS pair and a bulk 4.7-10 uF tantalum/ceramic at the board entry. Place AVSS as the analog ground return tied to VSS at one point (star ground) to keep ADC sample noise below 1 LSB. A ferrite bead on the digital supply side can also help when the digital section shares the SMPS derived 3.3 V with analog rails.
JTAG/ICSP pins (PGC/PGD) share port functions with normal I/O and must be left in their idle high/low states at reset to avoid contention. The MCLR pin requires a 10-100 kohm pull-up and a short reset pulse-width; an overly large reset capacitor will lengthen startup and may stall the debugger connection. Boundary-scan is available only when BSDL programming is enabled by the configuration fuse - leaving it disabled saves a small amount of I/O but breaks JTAG-based production test.
Estimated: the SPDIP-28 thermal resistance is roughly 70-80 C/W on a typical 1 oz 4-layer board with 1 sq in copper pour, which gives a junction-to-ambient rise of about 25-35 C at the worst-case 100 mA device current. SMPS systems with elevated ambient (industrial enclosed cabinets) should rely on the E-grade rated 125 C junction maximum and on convection plus copper heatsink area. Always measure the actual case rise in the final chassis.
Thông tin tuân thủ
RoHS and lead-free confirmed via Microchip product family page; halogen-free and REACH status not explicitly listed in the verified web snippets - verify with the manufacturer datasheet and the RoHS/REACH certificate before formal compliance attestation.
