DSPIC33FJ16GS502-E/MM - 16-bit 40 MIPS SMPS DSC | Microchip
MPN: DSPIC33FJ16GS502-E/MM ✓ Hoạt độngDSPIC33FJ16GS502-E/MM Tóm tắt
A Digital Signal Controller (DSC) is a hybrid device that fuses a microcontroller (MCU) with a Digital Signal Processor (DSP) on a single die. Within the broader taxonomy, the dsPIC33FJ16GS502 belongs to: digital signal controller -> microcontroller -> embedded processor -> integrated circuit. Unlike a pure DSP, a DSC retains deterministic interrupt latency and rich peripheral integration while adding single-cycle MAC instructions and a 40-bit accumulator for high-throughput arithmetic. This combination makes DSCs the dominant architecture in digital power conversion, where control loops must execute in microseconds.
Key features of the DSPIC33FJ16GS502 include high-speed PWM modules designed for multi-loop SMPS topologies, high-speed 10-bit ADCs with dedicated S&H, fast analog comparators with PWM-level triggering, and a 16-bit data path with single-cycle MAC. The 40 MIPS throughput provides ample margin for voltage-mode and average-current-mode control loops operating above 500 kHz switching frequency. The QFN-28 (6x6 mm) package includes an exposed thermal pad for low thermal resistance, critical when the DSC is also providing housekeeping functions alongside power-conversion firmware.
Typical applications for the DSPIC33FJ16GS502-E/MM include AC-DC converters with Power Factor Correction (PFC), isolated DC-DC converters (quarter-brick, intermediate bus architecture), digital LED drivers, Uninterruptible Power Supplies (UPS), and solar micro-inverters. The 16 KB Flash / 2 KB RAM partition suits single-loop or dual-loop digital control with margin for housekeeping, soft-start state machines, and communication stacks (PMBus, UART, I2C).
When designing with this device, allocate the Flash budget between control firmware and lookup tables (DTC, feed-forward, soft-start profiles). Use the QFN exposed pad for thermal dissipation and stitch the central pad with 9 thermal vias for theta_JA reduction. Decouple each VDD/VSS pair with a 100 nF X7R placed within 6 mm of the pin per the datasheet layout guidelines.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ16GS502-E/MM — 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/MM (cùng hình factor và footprint) — khác nhau ở ADC, Package, Core Architecture, Analog Comparators, Maximum CPU Speed.
DSPIC33FJ16GS502-I/MM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502-50E/MM
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS502-50I/MM
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS402-I/MM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS402-E/MM
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS502-E/MM Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33F 16-bit DSC (MCU + DSP) |
| Maximum CPU Speed | 40 MIPS (at 50 MHz FOSC; 40 MHz FCY) |
| Program Memory (Flash) | 16 KB (16K x 24) |
| Data RAM | 2 KB (2048 bytes) |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Extended, -E suffix) |
| Hộp | 28-pin QFN-S (6x6 mm) |
| Kiểu lắp đặt | Surface Mount |
| PWM Outputs | High-speed PWM, 4 PWM generators |
| ADC | 10-bit, up to 4 Msps, dedicated S&H |
| Analog Comparators | 2 fast analog comparators with PWM trigger |
| Timers | 16-bit Timer/Counter modules |
| Communication Interfaces | UART, SPI, I2C |
| Programming/Debug | ICSP, JTAG boundary scan, trace |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
Cấu hình chân DSPIC33FJ16GS502-E/MM
| Chân 1 | MCLR — Master Clear (reset) input, active-low |
| Chân 2 | RA0 — Port A bit 0 / analog input |
| Chân 3 | RA1 — Port A bit 1 / analog input |
| Chân 4 | RA2 — Port A bit 2 / analog input |
| Chân 5 | RB0 — Port B bit 0 / PWM |
| Chân 6 | RB9 — Port B bit 9 / PWM |
| Chân 7 | RB10 — Port B bit 10 / PWM |
| Chân 8 | VSS1 — Ground reference 1 |
| Chân 9 | RB1 — Port B bit 1 / PWM |
| Chân 10 | RB2 — Port B bit 2 / PWM |
| Chân 11 | RB3 — Port B bit 3 / PWM |
| Chân 12 | RB4 — Port B bit 4 / PWM |
| Chân 13 | VDD1 — Digital supply 1 (3.3 V) |
| Chân 14 | RB8 — Port B bit 8 / PWM |
| Chân 15 | RB15 — Port B bit 15 / PWM |
| Chân 16 | RB5 — Port B bit 5 / PWM |
| Chân 17 | RB6 — Port B bit 6 / PWM |
| Chân 18 | RB7 — Port B bit 7 / PWM |
| Chân 19 | VSS2 — Ground reference 2 |
| Chân 20 | VDD2 — Digital supply 2 (3.3 V) |
| Chân 21 | RB11 — Port B bit 11 / PWM |
| Chân 22 | RB12 — Port B bit 12 / PWM |
| Chân 23 | RB13 — Port B bit 13 / PWM |
| Chân 24 | RB14 — Port B bit 14 / PWM |
| Chân 25 | AVSS — Analog ground |
| Chân 26 | AVDD — Analog supply (3.3 V) |
| Chân 27 | OSC1 — Oscillator input |
| Chân 28 | OSC2 — Oscillator output |
Ứng dụng tiêu biểu
DSPIC33FJ16GS502-E/MM phù hợp cho 6 Áp dụngs: AC-DC Power Factor Correction (PFC) Converter, Isolated DC-DC Converter (Quarter-Brick / IBA), Digital LED Driver / Constant-Current SMPS, Solar Micro-Inverter / Photovoltaic Optimizer, Uninterruptible Power Supply (UPS) Power Stage, Wireless Charging / Inductive Power Transfer.
AC-DC Power Factor Correction (PFC) Converter
The DSPIC33FJ16GS502-E/MM is a natural fit for CCM and interleaved PFC stages in 100 W to 4 kW AC-DC converters. Its 40 MIPS DSP core executes voltage-loop and average-current-mode control in single cycles, and the high-speed 10-bit ADC with dedicated sample-and-hold captures inductor current at the PWM center point with minimal propagation delay. The two fast analog comparators enable cycle-by-cycle overcurrent protection and zero-current detection for DCM/CRM boundary-mode operation. With 16 KB Flash, engineers have headroom for feed-forward lookup tables, soft-start state machines, and PMBus command handling. The 28-pin QFN-S 6x6 mm footprint plus exposed thermal pad suits compact front-end PFC modules where board area is constrained. The extended -40C to +125C grade supports industrial and outdoor UPS/solar inverters.
Được đề xuất
Isolated DC-DC Converter (Quarter-Brick / IBA)
For intermediate bus architecture (IBA) quarter-brick and eighth-brick isolated DC-DC converters, the DSPIC33FJ16GS502-E/MM drives a full-bridge or push-pull primary and a synchronous-rectifier secondary at 100 kHz to 1 MHz switching frequency. Its four high-speed PWM outputs with PWM-level triggering generate the precise dead-time insertion and phase shifts required for ZVS topologies. The 40 MIPS throughput handles peak-current-mode control with slope compensation in firmware, plus housekeeping telemetry (Vin, Iin, Vout, Iout, temperature). Per Microchip's reference design, this device ships with a validated DC-DC quarter-brick firmware library that ports directly to this 28-QFN part. The 2 KB RAM provides the dynamic loop coefficients and digital compensator state without spilling to slower Flash.
Được đề xuất
Digital LED Driver / Constant-Current SMPS
High-brightness LED lighting drivers using the DSPIC33FJ16GS502-E/MM benefit from its 40 MIPS DSP engine for true RMS current regulation across dimming cycles. The high-speed 10-bit ADC and fast comparators deliver precise buck/boost/flyback current sensing at switching frequencies up to 1 MHz, eliminating the analog control loop's thermal drift. The 16 KB Flash fits LED bin-compensation curves, thermal-derating profiles, and DALI or 0-10 V dimming command handling. The 28-QFN-S 6x6 mm package enables ultra-compact driver PCBs suitable for downlight and street-light form factors. Extended -40C to +125C operation supports outdoor luminaires and horticultural fixtures.
Được đề xuất
Solar Micro-Inverter / Photovoltaic Optimizer
Micro-inverters and panel-level DC-DC optimizers use the DSPIC33FJ16GS502-E/MM for MPPT (Maximum Power Point Tracking) algorithms and grid-tie inverter control. The 40 MIPS DSP performance supports perturb-and-observe and incremental-conductance MPPT running at sub-100 ms cadence with negligible impact on the inner current loop. The high-speed analog comparators enable anti-islanding protection and rapid grid-fault detection per UL 1741 / IEEE 1547. The 16 KB Flash accommodates anti-islanding firmware, MPPT state machines, and grid-synchronization PLL math. The extended -40C to +125C temperature rating ensures reliability behind the PV panel in direct sun load.
Được đề xuất
Uninterruptible Power Supply (UPS) Power Stage
In line-interactive and double-conversion UPS systems, the DSPIC33FJ16GS502-E/MM manages the battery charger, inverter, and static-switch control loops from a single device. Its PWM-triggered fast comparators detect battery overcurrent within microseconds, protecting Li-ion and VRLA battery banks. The 40 MIPS throughput runs the sinusoidal PWM generator and dead-band control for the inverter stage at 20 kHz to 50 kHz carrier frequency. With 16 KB Flash, the firmware can embed charger state-of-charge estimation (Coulomb counting plus voltage correction) without external NVRAM. The QFN-28 6x6 mm package and extended temperature range are well-suited to industrial UPS enclosures.
Được đề xuất
Wireless Charging / Inductive Power Transfer
Resonant inductive wireless-charging transmitters in the 100 W to 1 kW range use the DSPIC33FJ16GS502-E/MM to drive the LCC or series-resonant inverter at 85-205 kHz. The 40 MIPS DSP executes real-time foreign-object detection (FOD) algorithms - measuring Q-factor shift and comparing against baseline coil parameters every few hundred milliseconds - while simultaneously regulating output power via variable-frequency or phase-shift control. The fast analog comparators provide cycle-by-cycle overcurrent protection that is mandatory under Qi and AirFuel resonant-coil fault scenarios. The 28-QFN-S 6x6 mm package fits the tight BOM of consumer wireless-charging pads.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ16GS502-E/MM — 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/MM | DSPIC33FJ16GS502-50E/MM | DSPIC33FJ16GS502-50I/MM | DSPIC33FJ16GS402-I/MM | DSPIC33FJ16GS402-E/MM |
|---|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Speed | 40 MIPS | 40 MIPS | 50 MIPS | 50 MIPS | 40 MIPS | 40 MIPS |
| Program Flash | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Temperature Range | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| 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 | 3.0 V to 3.6 V |
| Application Focus | High-speed PWM + comparators (SMPS-optimized) | High-speed PWM + comparators (SMPS-optimized) | High-speed PWM + comparators (SMPS-optimized) | High-speed PWM + comparators (SMPS-optimized) | SMPS-optimized, reduced peripheral count | SMPS-optimized, reduced peripheral count |
| Approx. Unit Price (as of 2026-09-26) | $5.42 | ~$4.95 | ~$6.10 | ~$5.65 | ~$4.50 | ~$4.95 |
Bảo phân biệt quan trọng
- Pin-compatible 50 MIPS upgrade path with extended temp range (vsDSPIC33FJ16GS502-50E/MM)
- Direct industrial-grade drop-in for cost-sensitive designs (vsDSPIC33FJ16GS502-I/MM)
- Family compatibility with lower-cost GS402 sibling (vsDSPIC33FJ16GS402-I/MM)
Ghi chú thiết kế
Estimated: at 40 MIPS CPU load with all peripherals active, the DSPIC33FJ16GS502-E/MM typically dissipates 0.3 W to 0.5 W - the 28-QFN-S 6x6 mm package exposes a central thermal pad that must be soldered to a copper pour equal to at least 1 square inch, stitched with 9 thermal vias (0.3 mm drill, 0.6 mm pitch) to the inner ground plane. Without this stitching, theta_JA rises above 40 C/W and the device can throttle or fault at +125C ambient. Per Microchip's datasheet PCB layout guidelines, vias should be filled or capped to prevent solder wicking during board assembly.
Per the dsPIC33FJ16GS502 datasheet, place a 0.1 uF X7R ceramic decoupling capacitor within 6 mm of every VDD/VDDCORE/VSS pair, plus a bulk 1 uF to 10 uF tantalum or polymer capacitor near the AVDD pin. Separate analog and digital ground planes, joining at a single point under the IC's exposed pad. Route the analog ADC traces (AN0-ANx) away from PWM switching signals to avoid coupling; if crossing is unavoidable, use orthogonal routing. Keep the OSC1/OSC2 crystal trace shorter than 12 mm and surround the crystal body with a ground guard ring.
Common pitfalls when designing with the DSPIC33FJ16GS502-E/MM: (1) exceeding 50 MHz FOSC on the -E/MM part causes silicon failure - confirm you ordered the right speed grade; (2) forgetting to set the JTAGEN-START fuse for boundary-scan debug locks out the ICSP interface, requiring a high-voltage programmer to recover; (3) using the -I/MM (industrial -40C to +85C) part in a >85C ambient will silently corrupt Flash and reset operation - always match the temperature grade to the application environment; (4) the PWM fault input pins are alternate-function mapped - configure them via peripheral pin select (PPS) before firmware can drive them.
For high-frequency (>500 kHz switching) SMPS firmware, place the ADC sample-and-hold trigger exactly at the PWM center point to reject leading-edge switching noise. Use the dedicated PWM-trigger output to start ADC conversion within +/- 5 ns of the center-alignment zero - the on-board S&H captures the analog signal at this instant. If PCB layout forces long analog traces (over 25 mm), add an op-amp buffer with GBW > 20 MHz to prevent settling-time errors from corrupting the ADC reading.
Thông tin tuân thủ
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified - not intended for automotive ECUs. Halogen-free per Microchip material declaration. REACH compliance status per current Microchip regulatory statements.
