DSPIC33CH128MP508-I/PT - Dual-Core 16-Bit DSC, 80-TQFP | Microchip
料号： DSPIC33CH128MP508-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.2 | $9.20 |
| 10 | $8.15 | $81.50 |
| 100 | $7.05 | $705.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.25 | $5,250.00 |
DSPIC33CH128MP508-I/PT 概述
A Digital Signal Controller (DSC) is a hybrid MCU+DSP architecture that combines a microcontroller's deterministic control peripherals with a digital signal processor's MAC engine and SIMD instructions; in the 33CH family this is extended into a dual-core topology where the master runs the application/control loop while the slave executes time-critical math such as high-resolution PWM control loops or proprietary algorithm code.
Key features include high-resolution PWM with 250 ps resolution (1 ns for slave), CAN FD support, four PGA/operational amplifiers, three DACs, four 12-bit 3.5 MSPS ADC modules, and a peripheral trigger generator (PTG). Functional Safety (FuSa) variants support IEC 61508 SIL 2/3 system designs. The chip is designed for systems where deterministic, sub-microsecond control loops must run in parallel with housekeeping code.
The dual-core architecture uses a tightly-coupled MSI (Master-Slave Interface) mailbox FIFO that allows the cores to exchange data without contention, and the slave core can directly drive dedicated peripherals (PWM, ADC) for hard-real-time applications. Hardware DSP support includes dual 40-bit accumulators, barrel shifter, and DSP-aware addressing modes.
Typical applications include digital switch-mode power supplies (PFC + LLC), wireless charging, motor control (FOC for PMSM/BLDC), drones, automotive sensors, and server PSUs. The functional safety variant is targeted at ISO 26262 systems. When designing with this device, reserve the slave core for time-critical control loops and use the master for housekeeping; this minimizes jitter and offloads work from the control ISR.
直接替换替代料： DSPIC33CH128MP508-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DSPIC33CH128MP508-I/PT （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, ADC, Program Memory (Flash), High-Resolution PWM.
快速对比工具——选择替代料号进行并排对比：
DSPIC33CH128MP508-E/PT
✅ 直接替换✓ 有现货
$3.4 / 个
查看数据手册 →DSPIC33CH128MP508T-I/PT
✅ 直接替换✓ 有现货
$4.62 / 个
查看数据手册 →DSPIC33CH128MP208-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.84 / 个
查看数据手册 →DSPIC33CH128MP206-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.45 / 个
查看数据手册 →DSPIC33CH128MP205-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.89 / 个
查看数据手册 →DSPIC33CH128MP506-I/PT
✅ 直接替换✓ 有现货
$5.62 / 个
查看数据手册 →DSPIC33CH128MP508-I/PT 最大额定值与电气特性
| Core Architecture | Dual-core 16-bit dsPIC DSC (Master + Slave) |
| Maximum CPU Frequency (Master) | 200 MHz |
| Maximum CPU Frequency (Slave) | 200 MHz |
| Program Memory (Flash) | 152 KB total (128 KB master + 24 KB slave) |
| Data Memory (RAM) | 16 KB |
| 封装 | 80-pin TQFP (PT), 12x12 mm, 0.5 mm pitch |
| Operating Voltage | 3.0 V to 3.6 V |
| 工作温度范围 | -40 C to +85 C (Industrial, -I) |
| ADC | 4x 12-bit, up to 3.5 MSPS |
| High-Resolution PWM Resolution | 250 ps (Master) / 1 ns (Slave) |
| CAN | CAN FD |
| DAC | 3x DAC |
| Op-Amps / PGAs | 4x on-chip |
| DMA Channels | 8 |
| 安装类型 | Surface Mount (TQFP) |
| RoHS 状态 | Compliant |
DSPIC33CH128MP508-I/PT 引脚配置
| 引脚 1 | AN17/RA3 — Analog input 17 / GPIO port A3 |
| 引脚 2 | AN18/RA4 — Analog input 18 / GPIO port A4 |
| 引脚 3 | VDD — Digital supply voltage (3.3 V) |
| 引脚 4 | PWM3H/RP50 — PWM3 high output / remappable peripheral pin 50 |
| 引脚 5 | PWM3L/RP51 — PWM3 low output / remappable peripheral pin 51 |
| 引脚 6 | PWM2H/RP52 — PWM2 high output / remappable peripheral pin 52 |
| 引脚 7 | PWM2L/RP53 — PWM2 low output / remappable peripheral pin 53 |
| 引脚 8 | VSS — Digital ground |
| 引脚 9 | PWM1H/RP54 — PWM1 high output / remappable peripheral pin 54 |
| 引脚 10 | PWM1L/RP55 — PWM1 low output / remappable peripheral pin 55 |
| 引脚 11 | OSCI/RC12 — Primary oscillator input / GPIO RC12 |
| 引脚 12 | OSCO/RC15 — Primary oscillator output / GPIO RC15 |
| 引脚 13 | VDD — Digital supply voltage (3.3 V) |
| 引脚 14 | PWM4H/RP56 — PWM4 high output / remappable peripheral pin 56 |
| 引脚 15 | PWM4L/RP57 — PWM4 low output / remappable peripheral pin 57 |
| 引脚 16 | VSS — Digital ground |
| 引脚 17 | PWM5H/RP58 — PWM5 high output / remappable peripheral pin 58 |
| 引脚 18 | PWM5L/RP59 — PWM5 low output / remappable peripheral pin 59 |
| 引脚 19 | PWM6H/RP60 — PWM6 high output / remappable peripheral pin 60 |
| 引脚 20 | PWM6L/RP61 — PWM6 low output / remappable peripheral pin 61 |
| 引脚 21 | CVDAR9/RP27 — ADC reference / remappable peripheral pin 27 |
| 引脚 22 | CVDAR10/RP28 — ADC reference / remappable peripheral pin 28 |
| 引脚 23 | SCL1/RG2 — I2C1 clock / GPIO RG2 |
| 引脚 24 | SDA1/RG3 — I2C1 data / GPIO RG3 |
| 引脚 25 | AVDD — Analog supply voltage (3.3 V) |
| 引脚 26 | AVSS — Analog ground |
| 引脚 27 | AN19/RA5 — Analog input 19 / GPIO port A5 |
| 引脚 28 | AN20/RA6 — Analog input 20 / GPIO port A6 |
| 引脚 29 | AN21/RA7 — Analog input 21 / GPIO port A7 |
| 引脚 30 | AN22/RB0 — Analog input 22 / GPIO port B0 |
| 引脚 31 | AN23/RB1 — Analog input 23 / GPIO port B1 |
| 引脚 32 | PGA1P1/AN0 — PGA1 positive input / analog input 0 |
| 引脚 33 | PGA1N1/AN1 — PGA1 negative input / analog input 1 |
| 引脚 34 | PGA1P2/AN2 — PGA1 positive input 2 / analog input 2 |
| 引脚 35 | PGA1N2/AN3 — PGA1 negative input 2 / analog input 3 |
| 引脚 36 | PGA1P3/AN4 — PGA1 positive input 3 / analog input 4 |
| 引脚 37 | PGA1N3/AN5 — PGA1 negative input 3 / analog input 5 |
| 引脚 38 | AVDD — Analog supply voltage (3.3 V) |
| 引脚 39 | AVSS — Analog ground |
| 引脚 40 | DAC1OUT/AN6 — DAC1 output / analog input 6 |
| 引脚 41 | DAC2OUT/AN7 — DAC2 output / analog input 7 |
| 引脚 42 | DAC3OUT/AN8 — DAC3 output / analog input 8 |
| 引脚 43 | OA1OUT/AN9 — Op-amp 1 output / analog input 9 |
| 引脚 44 | OA1IN+/AN10 — Op-amp 1 positive input / analog input 10 |
| 引脚 45 | OA1IN-/AN11 — Op-amp 1 negative input / analog input 11 |
| 引脚 46 | OA2OUT/AN12 — Op-amp 2 output / analog input 12 |
| 引脚 47 | OA2IN+/AN13 — Op-amp 2 positive input / analog input 13 |
| 引脚 48 | OA2IN-/AN14 — Op-amp 2 negative input / analog input 14 |
| 引脚 49 | OA3OUT/AN15 — Op-amp 3 output / analog input 15 |
| 引脚 50 | OA3IN+/AN16 — Op-amp 3 positive input / analog input 16 |
| 引脚 51 | AVDD — Analog supply voltage (3.3 V) |
| 引脚 52 | AVSS — Analog ground |
| 引脚 53 | CVDAR11/RP29 — ADC reference / remappable peripheral pin 29 |
| 引脚 54 | CVDAR12/RP30 — ADC reference / remappable peripheral pin 30 |
| 引脚 55 | RP62/RC0 — Remappable peripheral pin 62 / GPIO RC0 |
| 引脚 56 | RP63/RC1 — Remappable peripheral pin 63 / GPIO RC1 |
| 引脚 57 | RP64/RC2 — Remappable peripheral pin 64 / GPIO RC2 |
| 引脚 58 | RP65/RC3 — Remappable peripheral pin 65 / GPIO RC3 |
| 引脚 59 | RP66/RC4 — Remappable peripheral pin 66 / GPIO RC4 |
| 引脚 60 | RP67/RC5 — Remappable peripheral pin 67 / GPIO RC5 |
| 引脚 61 | RP68/RC6 — Remappable peripheral pin 68 / GPIO RC6 |
| 引脚 62 | RP69/RC7 — Remappable peripheral pin 69 / GPIO RC7 |
| 引脚 63 | RP70/RC8 — Remappable peripheral pin 70 / GPIO RC8 |
| 引脚 64 | RP71/RC9 — Remappable peripheral pin 71 / GPIO RC9 |
| 引脚 65 | VDD — Digital supply voltage (3.3 V) |
| 引脚 66 | VSS — Digital ground |
| 引脚 67 | RP72/RC10 — Remappable peripheral pin 72 / GPIO RC10 |
| 引脚 68 | RP73/RC11 — Remappable peripheral pin 73 / GPIO RC11 |
| 引脚 69 | CAN1TX/RP74 — CAN1 transmit / remappable peripheral pin 74 |
| 引脚 70 | CAN1RX/RP75 — CAN1 receive / remappable peripheral pin 75 |
| 引脚 71 | RP76/RD0 — Remappable peripheral pin 76 / GPIO RD0 |
| 引脚 72 | RP77/RD1 — Remappable peripheral pin 77 / GPIO RD1 |
| 引脚 73 | RP78/RD2 — Remappable peripheral pin 78 / GPIO RD2 |
| 引脚 74 | RP79/RD3 — Remappable peripheral pin 79 / GPIO RD3 |
| 引脚 75 | RP80/RD4 — Remappable peripheral pin 80 / GPIO RD4 |
| 引脚 76 | RP81/RD5 — Remappable peripheral pin 81 / GPIO RD5 |
| 引脚 77 | RP82/RD6 — Remappable peripheral pin 82 / GPIO RD6 |
| 引脚 78 | RP83/RD7 — Remappable peripheral pin 83 / GPIO RD7 |
| 引脚 79 | RP84/RD8 — Remappable peripheral pin 84 / GPIO RD8 |
| 引脚 80 | RP85/RD9 — Remappable peripheral pin 85 / GPIO RD9 |
典型应用
DSPIC33CH128MP508-I/PT 适用于 7 应用s: Digital Switch-Mode Power Supply (PFC + LLC), Wireless Charging (Qi / WPC) Transmitter, Field-Oriented Control (FOC) Motor Drive, Drone Flight Controller / ESC, Automotive Sensor and Functional Safety Module, Server / Telecom Power Supply, Solar Microinverter / Optimizer.
Digital Switch-Mode Power Supply (PFC + LLC)
The DSPIC33CH128MP508-I/PT is purpose-built for digital SMPS control including totem-pole PFC, LLC, and full-bridge converters. The slave core can own the high-frequency control loop (sub-microsecond period) while the master runs housekeeping, telemetry, and PMBus communications; 250 ps high-resolution PWM gives clean valley/peak control of SiC/GaN switches. Using a single DSC removes the cost and complexity of pairing a separate MCU + DSP and improves loop determinism.
推荐
Wireless Charging (Qi / WPC) Transmitter
Wireless charging transmitters require tight PID loops, foreign-object detection (FOD), and digital demodulation of the load-modulated Qi ping. The DSPIC33CH128MP508-I/PT's slave core runs the 100-200 kHz control loop while the master handles Qi protocol state machine, FOD math, and BLE/USB interface. The high-resolution PWM gives fine control of LCL tank current, and the 4 op-amps/PGA handle current-sensing on the primary side. The 12-bit ADC at 3.5 MSPS is sufficient for accurate FOD demodulation.
推荐
Field-Oriented Control (FOC) Motor Drive
Sensored and sensorless FOC for PMSM and BLDC motors runs on the DSPIC33CH128MP508-I/PT with deterministic ISR latency. The slave core can run the 20 kHz+ FOC inner loop (Clark/Park, SVPWM) while the master runs velocity PI, CANopen / EtherCAT, and the user interface. Hardware DSP support (40-bit accumulators, single-cycle MAC) accelerates sin/cos and sqrt operations. The 250 ps PWM resolution reduces torque ripple and audible noise in low-inductance motors.
推荐
Drone Flight Controller / ESC
Drone ESCs and flight controllers benefit from the DSPIC33CH128MP508-I/PT dual-core split: slave core runs the 32 kHz motor commutation loop, master handles PID attitude control, radio link, and telemetry. The small 12x12 mm TQFP is small enough for miniaturized ESCs, and the 200 MHz core speed gives ample headroom for sensor fusion. The CAN FD interface is useful for tethered/drone-to-drone communications. Industrial drones also leverage the -E grade's -40 to +125 C range.
推荐
Automotive Sensor and Functional Safety Module
Functional-safety (FuSa) variants of the DSPIC33CH128MP508-I/PT family support IEC 61508 SIL 2/3 systems and are used in automotive sensor modules such as battery management, traction inverters, and steering-angle sensors. The dual-core split supports lockstep or asymmetric redundancy for diagnostics; CAN FD enables high-bandwidth in-vehicle networking. Operating from -40 to +125 C (E-grade) or -40 to +85 C (I-grade), the 33CH family is automotive-qualified for under-hood and chassis applications.
推荐
Server / Telecom Power Supply
High-density 48 V server PSU and telecom rectifier designs use the DSPIC33CH128MP508-I/PT for full digital control of interleaved totem-pole PFC and LLC stages. The slave core's 1 ns PWM resolution is sufficient for GaN/SiC-driven topologies, while the master core manages PMBus, telemetry, and parallel-redundancy coordination. The 80-pin TQFP is preferred over QFP-100 because it fits in 1U-height CRPS power modules while still exposing all high-speed analog channels.
推荐
Solar Microinverter / Optimizer
Microinverters and DC optimizers use the DSPIC33CH128MP508-I/PT to implement MPPT and grid-tie inverter control in a single chip. The dual-core split lets the slave core own the 20-50 kHz inverter loop while the master runs MPPT, anti-islanding detection, and PLC/wireless communication. Fast MPPT updates (sub-millisecond) capture dynamic insolation changes, while the high-resolution PWM controls SiC MOSFETs in the HF isolated stage. Industrial-grade -I temperature is suitable for outdoor enclosures.
推荐
推荐产品汇总
工程参考数据： DSPIC33CH128MP508-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DSPIC33CH128MP508-E/PT | DSPIC33CH128MP508T-I/PT | DSPIC33CH128MP208-I/PT | DSPIC33CH128MP206-I/PT | DSPIC33CH128MP205-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Core Architecture | Dual-core dsPIC DSC | Dual-core dsPIC DSC | Dual-core dsPIC DSC | Dual-core dsPIC DSC | Dual-core dsPIC DSC | Dual-core dsPIC DSC |
| Maximum CPU Frequency | 200 MHz (each core) | 200 MHz | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
| Flash Memory | 152 KB (128 + 24 split) | 152 KB | 152 KB | 208 KB (higher density variant) | 206-family density (smaller than 208) | 205-family density (smaller than 206) |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| High-Resolution PWM | 250 ps (master) / 1 ns (slave) | 250 ps / 1 ns | 250 ps / 1 ns | 250 ps / 1 ns | 250 ps / 1 ns | 250 ps / 1 ns |
| Approximate Unit Price (qty 100, as of 2026-09-22) | $7.05 | ~$7.85 (E-grade premium) | $7.05 (same die, T&R) | ~$7.45 (higher density) | ~$6.50 (lower density) | ~$5.95 (lowest density) |
关键差异点
- True dual-core topology with dedicated slave core （对比 DSPIC33CH128MP208-I/PT)
- Industrial temperature grade with -40 to +85 C qualification （对比 DSPIC33CH128MP508T-I/PT)
- 250 ps master-core high-resolution PWM for GaN/SiC drives （对比 DSPIC33CH128MP506-I/PT)
设计说明
The DSPIC33CH128MP508-I/PT requires separate AVDD/AVSS analog and VDD/VSS digital supply rails; both must be 3.0-3.6 V. Place 10 uF bulk and 100 nF decoupling capacitors as close as possible to each supply pin. Tie unused analog pins (OA1OUT, DAC outputs) to AVSS through 10 kohm to prevent parasitic oscillation. The on-chip voltage regulator requires a 1 uF external capacitor on VCAP; do not omit this component or the core logic will not initialize.
In the 80-pin TQFP package, typical thermal resistance theta_JA is approximately 50-55 C/W on a 4-layer JEDEC test board. At full core activity (200 MHz on both cores) the chip dissipates roughly 0.7-1.0 W, resulting in a 35-55 C junction temperature rise above ambient; for industrial -40 to +85 C operation this leaves only 30-50 C of margin in hot enclosures. For high-temperature or enclosed designs, derate to 180 MHz (slave) or move to the DSPIC33CH128MP508-E/PT which is qualified to +125 C.
When designing with the dual-core DSPIC33CH128MP508-I/PT, the most common pitfall is letting the master core handle time-critical ISRs. The slave core is the preferred host for sub-microsecond PWM control loops because it can access high-resolution PWM registers without arbitration. Another pitfall is forgetting to configure the Master-Slave Interface (MSI) mailbox FIFOs before the slave starts; if MSI is not initialized, the cores cannot communicate and the firmware will deadlock. Always run the Master Project Configurator in MPLAB X IDE before generating slave firmware.
Route PWM outputs as short, matched-length traces; keep the PWM-to-driver path under 25 mm to avoid ringing on GaN/SiC gates. Place a 10 ohm gate resistor in series with each PWM output for damping. Separate analog (AVDD/AVSS) and digital (VDD/VSS) ground planes using a star-ground or split-plane topology, joining at a single point under the chip. Use a 4-layer PCB with continuous ground plane for best EMI performance, especially for 250 ps high-resolution PWM signals which are sensitive to ground bounce.
合规信息
RoHS compliant per Microchip product page. Industrial -I grade is -40 to +85 C; for AEC-Q100 automotive applications, the Automotive qualified (VAO) part variant should be specified. Halogen-free status not confirmed in provided data.