DSPIC33FJ128MC708A-E/PT - 40 MIPS Motor Control DSC | Microchip
MPN: DSPIC33FJ128MC708A-E/PT ✓ Hoạt độngDSPIC33FJ128MC708A-E/PT Tóm tắt
A Digital Signal Controller (DSC) is a hybrid processor class that combines a deterministic microcontroller (MCU) architecture with on-chip DSP computational resources, enabling real-time control loops alongside signal-processing math such as FFTs, FIR/IIR filters, and space-vector modulation. The dsPIC33F family sits in the broader taxonomy of microcontrollers -> 16-bit MCUs -> DSP-enhanced MCUs -> motor-control DSCs. DSCs are commonly used for closed-loop field-oriented control (FOC) of three-phase motors, sensorless BLDC commutation, digital power conversion, and audio processing where deterministic interrupt latency and on-the-fly math are required.
Key specifications include 16 KB SRAM, 8-channel PWM with dedicated timing hardware for motor control, a 12-bit ADC with up to 16 channels and 10 MSPS conversion rate, two Analog Comparators, a CAN module, and an ECAN interface for industrial networking. The device operates from 3.0V to 3.6V with industrial -40C to +125C extended temperature range, and integrates an 8 MHz internal RC oscillator with PLL support up to 80 MHz.
The DSP engine is a 16-bit data path with dual 40-bit accumulators, hardware DO/REPEAT loops, and fractional/integer saturation logic, giving the part its 40 MIPS performance rating. The motor-control peripheral set (PWM, ADC, QEI, fault inputs) is tightly coupled to the DSP core via a configurable interrupt controller, allowing a single device to execute current sampling, transformation (Clarke/Park), and PWM update within a few microseconds.
Typical applications include brushless DC (BLDC) motor drives, permanent-magnet synchronous motors (PMSM) with FOC, switched reluctance motors, uninterruptible power supplies (UPS), solar inverters, and switched-mode power supplies (SMPS). The wide operating temperature range and AEC-Q100 qualification make this part suitable for automotive motor control such as electric power steering pumps, cooling fans, and HVAC blowers.
When designing with this DSC, ensure that the trace length between the PWM output pins and the gate driver is short to minimize ringing on the switching node. The on-chip ADC requires careful analog ground separation, and a 10 nF ceramic bypass capacitor placed within 5 mm of each VDD pin is recommended. The -E/PT suffix indicates the extended-temperature TQFP-80 package variant, distinguishing it from the industrial -I/PT part.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ128MC708A-E/PT — 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 DSPIC33FJ128MC708A-E/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package.
DSPIC33FJ128MC706A-E/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ128MC706-E/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ128MC708A-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ128MC506A-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC708A-E/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33F 16-bit DSC (DSP + MCU) |
| CPU Speed | 40 MIPS at 80 MHz |
| Program Memory (Flash) | 128 KB |
| Data Memory (SRAM) | 16 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (extended) |
| Hộp | TQFP-80 (12x12 mm) |
| AEC-Q100 Qualification | Yes (automotive grade) |
| ADC | 12-bit, up to 16 channels |
| PWM Channels | 8 channels with motor-control timing |
| Communication Interfaces | ECAN, UART, SPI, I2C |
| Analog Comparators | 2 |
| Internal Oscillator | 8 MHz RC with PLL |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33FJ128MC708A-E/PT
| Chân 1 | RP15/CN13/PMD7/RB15 — I/O port pin / remappable peripheral |
| Chân 2 | RP14/CN12/PMD6/RB14 — I/O port pin / remappable peripheral |
| Chân 3 | RP13/CN11/PMD5/RB13 — I/O port pin / remappable peripheral |
| Chân 4 | RP12/CN10/PMD4/RB12 — I/O port pin / remappable peripheral |
| Chân 5 | AVSS — Analog ground |
| Chân 6 | AVDD — Analog supply voltage (3.3V) |
| Chân 7 | AN0/VREF+/RA0 — Analog input 0 / positive voltage reference / RA pin 0 |
| Chân 8 | AN1/VREF-/RA1 — Analog input 1 / negative voltage reference / RA pin 1 |
| Chân 9 | AN2/RA2 — Analog input 2 / RA pin 2 |
| Chân 10 | AN3/RA3 — Analog input 3 / RA pin 3 |
| Chân 11 | AN4/RA4 — Analog input 4 / RA pin 4 |
| Chân 12 | AN5/RA5 — Analog input 5 / RA pin 5 |
| Chân 13 | VDD — Digital supply voltage (3.3V) |
| Chân 14 | VSS — Digital ground |
| Chân 15 | OSC1/RA6 — Crystal oscillator input / RA pin 6 |
| Chân 16 | OSC2/RA7 — Crystal oscillator output / RA pin 7 |
| Chân 17 | PWM1H/RE0 — PWM output 1 high side / RE pin 0 |
| Chân 18 | PWM1L/RE1 — PWM output 1 low side / RE pin 1 |
| Chân 19 | PWM2H/RE2 — PWM output 2 high side / RE pin 2 |
| Chân 20 | PWM2L/RE3 — PWM output 2 low side / RE pin 3 |
| Chân 21 | PWM3H/RE4 — PWM output 3 high side / RE pin 4 |
| Chân 22 | PWM3L/RE5 — PWM output 3 low side / RE pin 5 |
| Chân 23 | VDD — Digital supply voltage (3.3V) |
| Chân 24 | VSS — Digital ground |
| Chân 25 | PWM4H/RE6 — PWM output 4 high side / RE pin 6 |
| Chân 26 | PWM4L/RE7 — PWM output 4 low side / RE pin 7 |
| Chân 27 | RP20/CN18/RC0 — I/O port pin / remappable peripheral |
| Chân 28 | RP21/CN19/RC1 — I/O port pin / remappable peripheral |
| Chân 29 | RP22/CN20/RC2 — I/O port pin / remappable peripheral |
| Chân 30 | RP23/CN21/RC3 — I/O port pin / remappable peripheral |
| Chân 31 | RP24/CN22/RC4 — I/O port pin / remappable peripheral |
| Chân 32 | RP25/CN23/RC5 — I/O port pin / remappable peripheral |
| Chân 33 | RP26/CN24/RC6 — I/O port pin / remappable peripheral |
| Chân 34 | RP27/CN25/RC7 — I/O port pin / remappable peripheral |
| Chân 35 | RP28/CN26/RC8 — I/O port pin / remappable peripheral |
| Chân 36 | RP29/CN27/RC9 — I/O port pin / remappable peripheral |
| Chân 37 | RP30/CN28/RC10 — I/O port pin / remappable peripheral |
| Chân 38 | RP31/CN29/RC11 — I/O port pin / remappable peripheral |
| Chân 39 | VSS — Digital ground |
| Chân 40 | VDD — Digital supply voltage (3.3V) |
| Chân 41 | RP8/CN6/RD8 — I/O port pin / remappable peripheral |
| Chân 42 | RP9/CN7/RD9 — I/O port pin / remappable peripheral |
| Chân 43 | RP10/CN8/RD10 — I/O port pin / remappable peripheral |
| Chân 44 | RP11/CN9/RD11 — I/O port pin / remappable peripheral |
| Chân 45 | RP4/CN4/RD4 — I/O port pin / remappable peripheral |
| Chân 46 | RP5/CN5/RD5 — I/O port pin / remappable peripheral |
| Chân 47 | RP6/CN6/RD6 — I/O port pin / remappable peripheral |
| Chân 48 | RP7/CN7/RD7 — I/O port pin / remappable peripheral |
| Chân 49 | C1RX/RF0 — ECAN1 receive / RF pin 0 |
| Chân 50 | C1TX/RF1 — ECAN1 transmit / RF pin 1 |
| Chân 51 | QEA1/RF2 — Quadrature encoder A input 1 / RF pin 2 |
| Chân 52 | QEB1/RF3 — Quadrature encoder B input 1 / RF pin 3 |
| Chân 53 | INDX1/RF4 — Quadrature index input 1 / RF pin 4 |
| Chân 54 | HOME1/RF5 — Home position input 1 / RF pin 5 |
| Chân 55 | QEA2/RF6 — Quadrature encoder A input 2 / RF pin 6 |
| Chân 56 | QEB2/RF7 — Quadrature encoder B input 2 / RF pin 7 |
| Chân 57 | INDX2/RF8 — Quadrature index input 2 / RF pin 8 |
| Chân 58 | FLTA1/RG0 — PWM fault A input 1 / RG pin 0 |
| Chân 59 | FLTA2/RG1 — PWM fault A input 2 / RG pin 1 |
| Chân 60 | FLTB1/RG2 — PWM fault B input 1 / RG pin 2 |
| Chân 61 | FLTB2/RG3 — PWM fault B input 2 / RG pin 3 |
| Chân 62 | VSS — Digital ground |
| Chân 63 | VDD — Digital supply voltage (3.3V) |
| Chân 64 | MCLR — Master clear reset (active low) |
| Chân 65 | PGED2/RP0/CN4/RB0 — Programming data 2 / I/O port |
| Chân 66 | PGEC2/RP1/CN5/RB1 — Programming clock 2 / I/O port |
| Chân 67 | PGED1/RP2/CN6/RB2 — Programming data 1 / I/O port |
| Chân 68 | PGEC1/RP3/CN7/RB3 — Programming clock 1 / I/O port |
| Chân 69 | RP4/CN8/RB4 — I/O port pin / remappable peripheral |
| Chân 70 | RP5/CN9/RB5 — I/O port pin / remappable peripheral |
| Chân 71 | RP6/CN10/RB6 — I/O port pin / remappable peripheral |
| Chân 72 | RP7/CN11/RB7 — I/O port pin / remappable peripheral |
| Chân 73 | RP16/CN14/RB8 — I/O port pin / remappable peripheral |
| Chân 74 | RP17/CN15/RB9 — I/O port pin / remappable peripheral |
| Chân 75 | RP18/CN16/RB10 — I/O port pin / remappable peripheral |
| Chân 76 | RP19/CN17/RB11 — I/O port pin / remappable peripheral |
| Chân 77 | VDD — Digital supply voltage (3.3V) |
| Chân 78 | VSS — Digital ground |
| Chân 79 | PGED3/RP24/CN18/RF0 — Programming data 3 / I/O port |
| Chân 80 | PGEC3/RP25/CN19/RF1 — Programming clock 3 / I/O port |
Ứng dụng tiêu biểu
DSPIC33FJ128MC708A-E/PT phù hợp cho 6 Áp dụngs: Brushless DC (BLDC) Motor Control, Field-Oriented Control (FOC) of PMSM Motors, Uninterruptible Power Supply (UPS) Control, Switched-Mode Power Supply (SMPS) Control, Automotive HVAC Blower & Cooling Fans, Solar Inverter Power Conversion.
Brushless DC (BLDC) Motor Control
The DSPIC33FJ128MC708A-E/PT is purpose-built for BLDC motor control, leveraging its 40 MIPS DSP engine to execute sensorless back-EMF commutation, trapezoidal or sinusoidal commutation, and field-oriented control (FOC) within microsecond cycle times. The 8-channel PWM module with complementary outputs and programmable dead-time directly drives a three-phase inverter bridge without external timing logic. The 12-bit, 10 MSPS ADC simultaneously samples two phase currents for accurate torque estimation, while the Quadrature Encoder Interface (QEI) supports sensored BLDC variants. Compared to a generic MCU, the DSP hardware multiply-accumulate (MAC) and DO/REPEAT loops reduce FOC math execution time by 5-10x, enabling higher PWM switching frequencies and quieter motor operation.
Được đề xuất
Field-Oriented Control (FOC) of PMSM Motors
The DSPIC33FJ128MC708A-E/PT's dual 40-bit accumulators and hardware DO/REPEAT loops make it ideal for PMSM field-oriented control, where Clarke/Park transforms, inverse transforms, and PI loops must execute every 50-100 us. The 128 KB Flash comfortably stores lookup tables (sin/cos, inverse Park), motor parameter sets, and FOC state-machine code. The on-chip 12-bit ADC's simultaneous sampling capability aligns current measurements with PWM duty cycle updates, minimizing torque ripple. The 40 MIPS performance ensures the entire FOC loop completes well within the PWM period even at 20 kHz switching, leaving headroom for higher-level control logic and CAN communication.
Được đề xuất
Uninterruptible Power Supply (UPS) Control
The DSPIC33FJ128MC708A-E/PT is well suited to UPS inverter control, where it must maintain 50/60 Hz sine output while regulating battery charge/discharge. The DSP engine executes the digital control loop for the DC-AC inverter stage, and the 12-bit ADC monitors battery voltage, output voltage, and inductor current for closed-loop regulation. The 16 KB SRAM accommodates state-machine buffers and waveform look-up tables. The wide -40C to +125C operating range supports industrial UPS installations. Compared to discrete analog controllers, the DSC approach enables firmware-configurable UPS modes (online, line-interactive, offline) without PCB rework.
Được đề xuất
Switched-Mode Power Supply (SMPS) Control
The DSPIC33FJ128MC708A-E/PT provides digital control of SMPS topologies including PFC, LLC, and full-bridge converters used in industrial and telecom power systems. The high-resolution PWM modules generate the switching waveforms with programmable dead-time and fault handling, while the high-speed ADC samples primary/secondary currents and voltages at the switching frequency. The DSP engine runs digital compensator algorithms (Type-II, Type-III) with adaptive gain for load-step response. Compared to analog UC3842-type controllers, the DSC implementation adds programmability, telemetry via CAN, and adaptive protection, all in the same TQFP-80 footprint as the analog counterpart would need for support circuitry.
Được đề xuất
Automotive HVAC Blower & Cooling Fans
The DSPIC33FJ128MC708A-E/PT's AEC-Q100 qualification and extended -40C to +125C temperature range make it ideal for automotive HVAC blower motors and engine cooling fans. The 40 MIPS DSP engine runs sensorless FOC algorithms that minimize acoustic noise and improve efficiency over traditional trapezoidal drives. The ECAN module integrates with the vehicle's body CAN bus for speed/torque commands and diagnostic feedback. The 8-channel PWM drives the three-phase inverter directly, with built-in fault protection for overcurrent and stall conditions. Compared to brushed-motor solutions, the BLDC/PMSM approach reduces vehicle electrical load by 30-50%.
Được đề xuất
Solar Inverter Power Conversion
The DSPIC33FJ128MC708A-E/PT can serve as the control DSP in a small-to-medium solar inverter, executing MPPT (Maximum Power Point Tracking) algorithms, DC-DC boost control, and DC-AC inversion. The 128 KB Flash stores MPPT profiles, grid-tie synchronization logic, and anti-islanding detection algorithms required by IEEE 1547 (compliance depends on certification, not on the part). The 12-bit ADC monitors panel voltage/current, grid voltage, and output current for closed-loop regulation. The 40 MIPS performance runs the dual-loop control (current inner loop, voltage outer loop) within the PWM switching cycle. The ECAN interface enables integration into smart-grid and SCADA systems for telemetry.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ128MC708A-E/PT — 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 | DSPIC33FJ128MC706A-E/PT | DSPIC33FJ128MC706-E/PT | DSPIC33FJ128MC708A-I/PT | DSPIC33FJ128MC506A-E/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 40 MIPS (80 MHz) | 40 MIPS (80 MHz) | 40 MIPS (80 MHz) | 40 MIPS (80 MHz) | 40 MIPS (80 MHz) |
| CAN Module | Yes (ECAN) | No | No | Yes (ECAN) | Yes (ECAN) |
| Operating Temperature | -40 C to +125 C (extended) | -40 C to +125 C (extended) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| AEC-Q100 Qualification | Yes | Yes | Yes | No (industrial only) | Yes |
| PWM Channels | 8 | 8 | 8 | 8 | 8 |
| ADC | 12-bit, 16 channels, 10 MSPS | 12-bit, 16 channels, 10 MSPS | 12-bit, 16 channels, 10 MSPS | 12-bit, 16 channels, 10 MSPS | 12-bit, 16 channels, 10 MSPS |
Bảo phân biệt quan trọng
- Includes CAN/ECAN module on TQFP-80 footprint (vsDSPIC33FJ128MC706A-E/PT)
- 128 KB Flash for advanced control algorithms (vsDSPIC33FJ128MC506A-E/PT)
- Extended -40C to +125C automotive temperature range (vsDSPIC33FJ128MC708A-I/PT)
Ghi chú thiết kế
Each VDD pin must be decoupled with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, and each AVDD pin should have its own 10 uF + 0.1 uF combination to keep analog and digital supplies separate. The internal voltage regulator requires a bulk 10 uF capacitor on VDD/VSS pairs. Power-on-reset is automatic; a 10 kohm pull-up on MCLR is required for proper operation. Avoid switching noise injection into AVDD by using a ferrite bead between DVDD and AVDD when sharing a 3.3V rail.
The TQFP-80 package has a 0.5 mm pitch which requires careful PCB layout. Use 0.15 mm/6 mil trace width with 0.15 mm spacing, and route all PWM outputs and ADC inputs on the top layer with short, direct paths to minimize parasitic inductance. Place the crystal oscillator within 10 mm of the OSC1/OSC2 pins and guard the traces with a ground ring to reduce EMI susceptibility. For motor-control designs, separate the analog ground (AVSS) and digital ground (VSS) at the IC and join them at a single point near the PCB power entry.
The PGECx/PGEDx pins must be used as matched pairs for ICSP programming (e.g., PGEC1 with PGED1, NOT PGEC1 with PGED2). During PCB layout, ensure unused PWM channels are not left floating - configure them as outputs or tie them to ground through 10 kohm resistors. The 12-bit ADC requires a minimum acquisition time of 132 ns; do not reduce this or accuracy will degrade. For FOC applications, the simultaneous-sample mode must be enabled for accurate current sensing, otherwise torque ripple will result.
Thông tin tuân thủ
AEC-Q100 qualified per Microchip product page and Hotenda listing. RoHS and lead-free compliance confirmed. Halogen-free status not specified in verified web data.
