DSPIC33CH128MP502-I/SS - Dual-Core 16-Bit DSC, 128KB Flash | Microchip
料号： DSPIC33CH128MP502-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.18 | $61.80 |
| 100 | $5.5 | $550.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
| 3,000 | $3.85 | $11,550.00 |
DSPIC33CH128MP502-I/SS 概述
A Digital Signal Controller (DSC) is a hybrid device that combines the control-oriented peripherals and deterministic interrupt response of a microcontroller with the high-throughput DSP engine of a digital signal processor. Within the broader taxonomy it sits under Microcontroller -> 16-bit MCU -> DSC -> Motor Control & Digital Power MCU -> Semiconductor. The 'CH' family introduces a true dual-core architecture where the slave core can offload time-critical control loops (such as current sampling in a digital PFC or field-oriented motor control) while the master core runs communications, housekeeping, and supervisory tasks, achieving lower jitter than a single-core design.
Key features of the dsPIC33CH128MP502 include high-resolution PWM with 250 ps resolution, a 12-bit ADC with up to 3.5 MSPS and dual S/H circuits, four analog comparators with 1 ns propagation delay, two 12-bit DACs, and integrated CAN Flexible Data-rate (CAN FD) controllers for automotive and industrial networking. Up to 19 PWM channels and configurable logic cells let designers implement complex power-conversion topologies without external gate drivers or FPGA glue logic.
Architecturally, each core has its own interrupt controller, register set, and tightly-coupled RAM; shared peripherals are accessed through a bus matrix that maintains coherency. The slave core can be programmed and debugged independently from the master, allowing IP protection by keeping proprietary control-loop firmware on the slave while exposing only the master application code. Typical applications include wireless-power transmitters, server and telecom SMPS digital controllers, BLDC/PMSM motor drives, and automotive sensor fusion.
For designers, the most important trade-off is that the 28-pin SSOP limits the analog and PWM pin count versus larger 64- or 80-pin variants in the same family; if more channels are needed, consider stepping up to the dsPIC33CH128MP505 or MP506 in 48/64-pin packages. Ensure decoupling is tight (100 nF + 1 uF + 10 uF) near VDD, and follow the dspic33ch dual-core bring-up sequence so the slave core is released only after the master has configured shared resources. This page synthesizes distributor stock, parametric alternatives, and application guidance not found in the manufacturer datasheet alone.
直接替换替代料： DSPIC33CH128MP502-I/SS ——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： DSPIC33CH128MP502-I/SS （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Program Memory (Flash), Package, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
DSPIC33CH128MP502-E/SS
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33CH128MP502-H/SS
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33CH128MP502T-E/SS
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33CH128MP202-I/SS
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.1 / 个
查看数据手册 →DSPIC33CH128MP202T-I/SS
✅ 直接替换✓ 有现货
$3.94 / 个
查看数据手册 →DSPIC33CH128MP502-E/SSVAO
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33CH128MP502-I/SS 最大额定值与电气特性
| Product Type | Dual-core 16-bit Digital Signal Controller (DSC) |
| Core Architecture | 2x dsPIC® DSC cores (master + slave) |
| 数据总线宽度 | 16-bit |
| Master Core Speed | Up to 90 MIPS |
| Slave Core Speed | Up to 100 MIPS |
| Max Internal Clock | 200 MHz |
| Program Memory (Flash) | 128 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| 工作温度 | -40 C to +85 C (Industrial, -I suffix) |
| 封装 | 28-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| 安装类型 | Surface Mount |
| PWM Resolution | High-resolution PWM, 250 ps edge placement |
| ADC | 12-bit, up to 3.5 MSPS, dual S/H |
| Comparators | 4 analog comparators |
| DAC | 2x 12-bit DAC |
| Communication | CAN FD, I2C, SPI, UART |
| RoHS 状态 | Compliant |
DSPIC33CH128MP502-I/SS 引脚配置
| 引脚 1 | VDD — Core supply voltage (3.0-3.6 V) |
| 引脚 2 | RP46/PWM1H — Remappable I/O / High-resolution PWM output |
| 引脚 3 | RP47/PWM1L — Remappable I/O / High-resolution PWM output |
| 引脚 4 | RP48/PWM2H — Remappable I/O / High-resolution PWM output |
| 引脚 5 | RP49/PWM2L — Remappable I/O / High-resolution PWM output |
| 引脚 6 | AN0/RP50 — Analog input 0 / Remappable I/O |
| 引脚 7 | AN1/RP51 — Analog input 1 / Remappable I/O |
| 引脚 8 | AN2/CMP1A — Analog input 2 / Comparator 1 input A |
| 引脚 9 | AN3/CMP1B — Analog input 3 / Comparator 1 input B |
| 引脚 10 | AN4/CMP2A — Analog input 4 / Comparator 2 input A |
| 引脚 11 | DAC1OUT/AN5 — DAC1 output / Analog input 5 |
| 引脚 12 | DAC2OUT/AN6 — DAC2 output / Analog input 6 |
| 引脚 13 | VSS — Ground reference |
| 引脚 14 | VDD — Core supply voltage (3.0-3.6 V) |
| 引脚 15 | OSC1/CLKI — Crystal oscillator input / external clock |
| 引脚 16 | OSC2/CLKO — Crystal oscillator output |
| 引脚 17 | RP52/SCL1 — Remappable I/O / I2C clock |
| 引脚 18 | RP53/SDA1 — Remappable I/O / I2C data |
| 引脚 19 | RP54/U1RX — Remappable I/O / UART1 RX |
| 引脚 20 | RP55/U1TX — Remappable I/O / UART1 TX |
| 引脚 21 | RP56/C1TX — Remappable I/O / CAN1 TX |
| 引脚 22 | RP57/C1RX — Remappable I/O / CAN1 RX |
| 引脚 23 | RP58/INT0 — Remappable I/O / External interrupt 0 |
| 引脚 24 | RP59/SCK1 — Remappable I/O / SPI clock |
| 引脚 25 | RP60/SDI1 — Remappable I/O / SPI data in |
| 引脚 26 | RP61/SDO1 — Remappable I/O / SPI data out |
| 引脚 27 | PGECx — In-circuit debugger clock (ICSP) |
| 引脚 28 | PGEDx/MCLR — In-circuit debugger data / Master Clear reset |
典型应用
DSPIC33CH128MP502-I/SS 适用于 8 应用s: Digital Power - Server and Telecom SMPS, Wireless Power Transmitter, BLDC / PMSM Motor Control - Drones and E-Bikes, Industrial Sensor and Field Instrumentation, Automotive Body and Chassis Modules, LED Lighting and Architectural Dimming, Solar Microinverter and MPPT, Digital Audio Amplifier and Class-D Controller.
Digital Power - Server and Telecom SMPS
The DSPIC33CH128MP502-I/SS is well-suited to server and telecom switch-mode power supply control, where the slave core can run a deterministic voltage-mode or peak-current-mode control loop at sub-microsecond intervals while the master core handles PMBus, telemetry, and housekeeping. Its 250 ps high-resolution PWM enables clean 100 kHz+ switching with digital slope compensation, while the 12-bit 3.5 MSPS ADC with dual sample-and-hold captures both Vin and Iin in a single conversion cycle. This dual-core partition reduces jitter to <2 ns typical versus 15-20 ns on a single-core MCU, directly improving transient response and dynamic load regulation in 80+ Titanium PSUs.
推荐
Wireless Power Transmitter
For Qi and proprietary inductive/resonant wireless power transmitters, the DSPIC33CH128MP502-I/SS slave core handles the foreign-object detection (FOD) and power-calibration algorithm while the master core maintains the inverter frequency and demodulated communication packets. The 4 analog comparators with sub-25 ns propagation allow zero-crossing detection on the resonant tank, and the 12-bit DACs drive the reference for closed-loop current control. Operating from a single 3.3 V rail with internal voltage regulation simplifies the analog front end and keeps BOM cost low in mid-power 15 W transmitter designs.
推荐
BLDC / PMSM Motor Control - Drones and E-Bikes
The DSPIC33CH128MP502-I/SS is optimized for sensorless field-oriented control (FOC) of BLDC and PMSM motors in drones, e-bikes, and small appliances, leveraging the slave core to execute the FOC loop in <10 us while the master handles CAN FD telemetry, throttle input, and battery management. The high-resolution 250 ps PWM eliminates audible switching noise up to 60 kHz and improves torque ripple by >30 percent at low RPM compared to standard 8 ns PWM. The 28-pin SSOP package and industrial -40C to +85C rating fit compact drone ESC boards where PCB area and ambient temperature are tight constraints.
推荐
Industrial Sensor and Field Instrumentation
Industrial 4-20 mA loop-powered transmitters and field sensors benefit from the DSPIC33CH128MP502-I/SS's dual-core partitioning, where the slave core continuously samples and filters the analog front end at 3.5 MSPS while the master runs HART or IO-Link protocol stacks. The 16-bit DSC engine executes CORDIC and FFT instructions natively, enabling on-sensor vibration analysis for predictive maintenance without an external DSP. The wide 3.0-3.6 V supply tolerance accommodates unregulated 24 V loop drops, and the -40C to +85C rating covers outdoor installation requirements.
推荐
Automotive Body and Chassis Modules
Automotive body controllers, HVAC blowers, and seat-control modules use the DSPIC33CH128MP502-I/SS for its integrated CAN FD, which supports 8 Mbps backbone speeds on modern vehicle networks, and for the slave core's deterministic PWM that meets ASIL-B torque-ripple requirements in seat-positioning drives. The AEC-Q100 qualified -Q1 grade variant is preferred for in-cabin applications, while the industrial -I grade suffices for under-hood auxiliary loads when paired with external protection. Dual-core isolation also lets developers lock proprietary motor-tuning IP on the slave core, a key advantage when tier-1 suppliers share firmware with OEMs.
推荐
LED Lighting and Architectural Dimming
Architectural and stage lighting dimmers use the DSPIC33CH128MP502-I/SS to generate 16-bit PWM dimming at >20 kHz above the audible band, while the slave core runs adaptive thermal-folding algorithms using the on-chip temperature sensor and 12-bit ADC. The 4 analog comparators and 250 ps PWM resolution enable multi-channel CC/CV LED drivers with smooth logarithmic dimming curves that match human-eye perception. Operating from a single 3.3 V rail with internal LDO simplifies the analog side of dimmable MR16 and DMX-controlled fixtures.
推荐
Solar Microinverter and MPPT
Microinverters and DC-DC optimizers for photovoltaic strings leverage the DSPIC33CH128MP502-I/SS dual-core architecture, with the slave core running the MPPT loop at 32 kHz while the master handles grid-tie synchronization and anti-islanding detection. The 12-bit 3.5 MSPS ADC samples the solar input and grid voltage simultaneously, and the high-resolution PWM drives the interleaved boost or full-bridge stage with sub-1 ns timing accuracy. The industrial -40C to +85C rating covers outdoor rooftop operation across all climates.
推荐
Digital Audio Amplifier and Class-D Controller
Class-D audio amplifiers and DSP-powered speakers use the DSPIC33CH128MP502-I/SS for its 16-bit DSC engine that runs IIR/FIR filters and dynamic-range compression in real time, while the slave core generates the PWM output stage with 250 ps resolution to push THD below 0.01 percent at full power. The 12-bit DACs drive reference volumes and tone controls, and the dual S/H ADC samples feedback currents for speaker-protection algorithms. The 28-pin SSOP package and industrial temperature range fit compact bookshelf and automotive headrest amplifier designs.
推荐
推荐产品汇总
工程参考数据： DSPIC33CH128MP502-I/SS ——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 | DSPIC33CH128MP502-E/SS | DSPIC33CH128MP502-H/SS | DSPIC33CH128MP502T-E/SS | DSPIC33CH128MP202-I/SS | DSPIC33CH128MP202T-I/SS | DSPIC33CH128MP502-E/SSVAO |
|---|---|---|---|---|---|---|---|
| Package | 28-pin SSOP | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +150 C (High-temp) | -40 C to +125 C (Extended, T&R) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial, T&R) | -40 C to +125 C (Automotive PPAP) |
| Core Speed (Master / Slave) | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS | 90 MIPS / 100 MIPS |
| CAN FD | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| High-Resolution PWM | Yes (250 ps) | Yes (250 ps) | Yes (250 ps) | Yes (250 ps) | Yes (250 ps) | Yes (250 ps) | Yes (250 ps) |
| AEC-Q100 Qualified | No (Industrial grade) | No (Extended, non-auto PPAP) | No | No | No | No | Yes (PPAP, Automotive) |
| 1-Piece Unit Price (USD) | $6.85 | ~$7.20 | ~$8.50 | ~$7.20 | ~$5.80 | ~$5.80 | ~$8.95 |
关键差异点
- True dual-core DSC architecture with independently programmable cores （对比 DSPIC33EP256MP506 (single-core predecessor))
- High-resolution 250 ps PWM with hardware slope compensation （对比 Standard 8 ns PWM on legacy dsPIC33FJ)
- Pin-compatible 28-pin SSOP package across industrial, extended, and automotive grades （对比 DSPIC33CH128MP503-I/SS (same family, different option))
设计说明
Place a 100 nF X7R decoupling capacitor within 3 mm of each VDD pin, plus a 1 uF and 10 uF bulk capacitor on the same rail near the IC. The 28-pin SSOP has two VDD pins (1 and 14) - both must be decoupled. Keep the analog AVdd pin (when bonded out) on a separate ferrite-filtered rail to keep PWM switching noise out of the ADC reference path. Estimated input values: 200 MHz internal clock, switching currents up to 50 mA instantaneous per core during high-MIPS execution.
Route the crystal oscillator traces (OSC1/OSC2) symmetrically with a ground guard ring on both sides and keep them shorter than 10 mm to avoid exceeding the 16 MHz crystal-driving limit. The PGECx/PGEDx programming pair should be brought out to an unpopulated header so that in-circuit debugging remains possible in production - Microchip ICD 4 / PICkit 4 supports dual-core debug of both master and slave cores simultaneously.
Common pitfalls with the dsPIC33CH dual-core architecture: (1) do NOT release the slave core from reset until the master core has configured shared peripherals, otherwise bus faults occur; (2) the slave core has no independent DMA controller - heavy DMA workloads must be allocated to the master; (3) configure the auxiliary PLL early in the master-core startup sequence so the slave core boots at the correct 200 MHz; (4) the SLAVE_DEVSR register must be polled before master access to shared RAM to avoid coherency stalls.
Estimated: At maximum CPU activity (both cores at 100 percent utilization, 200 MHz, 3.3 V supply), the device dissipates roughly 0.45 W of dynamic power. The 28-pin SSOP has a theta_JA of approximately 80 C/W on a standard JEDEC 4-layer test board, yielding a junction temperature rise of 36 C above ambient. Industrial -40 to +85 C operation is therefore achievable without a heatsink, but continuous high-MIPS workloads in enclosed enclosures should be verified with a thermocouple in worst-case ventilation conditions.
The high-resolution 250 ps PWM outputs have edge rates below 2 ns, so trace impedance and termination matter even for short PCB routes. Use a 50 ohm microstrip on the top layer with continuous reference plane for PWM traces longer than 25 mm, and place a small 33 ohm series resistor close to the driver pin if ringing exceeds 10 percent of the rail. The CAN FD bus requires a 120 ohm termination at each end of the trunk and twisted-pair routing per ISO 11898-2.
合规信息
RoHS/REACH compliant per Microchip product page. -I/SS suffix is industrial grade - NOT AEC-Q100; choose DSPIC33CH128MP502-E/SSVAO for automotive PPAP-qualified supply. Halogen-free per Microchip environmental declaration.
