DSPIC33CK128MP205-E/PT - 16-bit 100MHz DSC 128KB Flash | Microchip
MPN: DSPIC33CK128MP205-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.05 | $50.50 |
| 100 | $4.48 | $448.00 |
| 500 | $4.02 | $2,010.00 |
| 1,000 | $3.61 | $3,610.00 |
DSPIC33CK128MP205-E/PT Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, a DSC such as the dsPIC33CK sits between a general-purpose MCU and a dedicated digital power controller, providing a modified Harvard architecture CPU with DSP instructions, plus high-resolution PWM hardware purpose-built for closed-loop control of power converters and motors.
Key features include the dsPIC33CK single-core CPU operating from 3.0V to 3.6V, high-resolution PWM with 250 ps effective resolution for precision duty-cycle control, CAN FD connectivity for automotive and industrial networks, and on-chip analog integration with three op-amps and three comparators (as listed by Mouser for the 48-pin MP205 variant). Functional-safety (FuSa) support documentation is available per DigiKey categorization.
Architecturally, the modified Harvard core executes from dual-partition Flash supporting live update, with deterministic interrupt latency suited to sub-microsecond control loops. The high-resolution PWM phase outputs, ADC triggering, and comparator outputs are tightly cross-connected internally, enabling peak-current-mode and multiphase topologies without external glue logic.
Typical applications include digital power supplies (totem-pole PFC, LLC), brushless DC and PMSM motor control (FOC), solar micro-inverters, and automotive AEC-Q100-qualified control modules - the family is marketed by Hotenda as Automotive, AEC-Q100 qualified.
Design consideration: operate the device strictly within the 3.0V to 3.6V supply window and budget decoupling on every VDD pair; the 250 ps PWM resolution is only meaningful with clean analog supply routing.
This page synthesizes distributor data, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK128MP205-E/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33CK128MP205-E/PT (same form factor and footprint) — differing in Data SRAM, Operating Temperature, Package, Core, Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP205-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP206-E/PT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
DSPIC33CK256MP205-E/PT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33CK128MP204-E/PT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
DSPIC33CK64MP205-E/PT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.75 / Unit
View Datasheet →DSPIC33CK128MP205-E/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| Max CPU Speed | 100 MHz (100 MIPS) |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data SRAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| PWM Resolution | 250 ps (high-resolution PWM) |
| CAN Interface | CAN FD |
| On-chip Op-Amps | 3 |
| On-chip Comparators | 3 |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 48-TQFP (7x7 mm), PT |
| Mounting Type | Surface Mount |
| Communication Interfaces | I2C, SPI, UART/USART, LINbus, IrDA, CAN FD |
| Qualification | Automotive, AEC-Q100 (family) |
| Architecture | Modified Harvard, 16-bit fixed-point |
| RoHS Status | Compliant |
DSPIC33CK128MP205-E/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/C1IN1-/RA0 — Analog input 0 / comparator 1 input / port A |
| Pin 3 | AN1/C1IN1+/RA1 — Analog input 1 / comparator 1 input / port A |
| Pin 4 | PGD/EMUD1/RP1/RA2 — Programming data / UART or PWM RP1 / port A |
| Pin 5 | PGC/EMUC1/RP2/RA3 — Programming clock / RP2 / port A |
| Pin 6 | AN2/C2IN1-/RA4 — Analog input 2 / comparator 2 input / port A |
| Pin 7 | AN3/C2IN1+/RB0 — Analog input 3 / comparator 2 input / port B |
| Pin 8 | AN4/C1IN2-/OPA1OUT/RB1 — Analog input 4 / op-amp 1 output / port B |
| Pin 9 | AN5/OPA1IN+/RB2 — Analog input 5 / op-amp 1 non-inverting input |
| Pin 10 | OPA1IN-/RB3 — Op-amp 1 inverting input |
| Pin 11 | VDD — Positive supply (3.0V-3.6V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | AN6/OPA2IN+/RB4 — Analog input 6 / op-amp 2 non-inverting input |
| Pin 14 | OPA2IN-/RB5 — Op-amp 2 inverting input |
| Pin 15 | AN7/OPA2OUT/RB6 — Analog input 7 / op-amp 2 output |
| Pin 16 | AN8/OPA3IN+/RB7 — Analog input 8 / op-amp 3 non-inverting input |
| Pin 17 | OPA3IN-/RB8 — Op-amp 3 inverting input |
| Pin 18 | AN9/OPA3OUT/RB9 — Analog input 9 / op-amp 3 output |
| Pin 19 | AN10/C3IN1-/RB10 — Analog input 10 / comparator 3 input |
| Pin 20 | AN11/C3IN1+/RB11 — Analog input 11 / comparator 3 input |
| Pin 21 | T1CK/RP12/RB12 — Timer 1 clock / RP12 / port B |
| Pin 22 | SOSCI/RP13/RB13 — Secondary oscillator input / RP13 |
| Pin 23 | SOSCO/RP14/RB14 — Secondary oscillator output / RP14 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | PWM1L/RP15/RB15 — High-resolution PWM1 low-side output / RP15 |
| Pin 26 | PWM1H/RC0 — High-resolution PWM1 high-side output |
| Pin 27 | PWM2L/RC1 — High-resolution PWM2 low-side output |
| Pin 28 | PWM2H/RC2 — High-resolution PWM2 high-side output |
| Pin 29 | PWM3L/RC3 — High-resolution PWM3 low-side output |
| Pin 30 | PWM3H/RC4 — High-resolution PWM3 high-side output |
| Pin 31 | AVDD — Analog supply |
| Pin 32 | AVSS — Analog ground |
| Pin 33 | PWM4L/RC5 — High-resolution PWM4 low-side output |
| Pin 34 | PWM4H/RC6 — High-resolution PWM4 high-side output |
| Pin 35 | PWM5L/RC7 — High-resolution PWM5 low-side output |
| Pin 36 | PWM5H/RC8 — High-resolution PWM5 high-side output |
| Pin 37 | VDD — Positive supply (3.0V-3.6V) |
| Pin 38 | VSS — Ground reference |
| Pin 39 | PWM6L/RC9 — High-resolution PWM6 low-side output |
| Pin 40 | PWM6H/RD0 — High-resolution PWM6 high-side output |
| Pin 41 | RP24/RD1 — Remappable peripheral pin RP24 / port D |
| Pin 42 | RP25/RD2 — Remappable peripheral pin RP25 / port D |
| Pin 43 | RP26/RD3 — Remappable peripheral pin RP26 / port D |
| Pin 44 | OSC1/RP27/RD4 — Primary oscillator input / RP27 |
| Pin 45 | OSC2/RP28/RD5 — Primary oscillator output / RP28 |
| Pin 46 | RP29/RD6 — Remappable peripheral pin RP29 / port D |
| Pin 47 | RP30/RD7 — Remappable peripheral pin RP30 / port D |
| Pin 48 | VCAP/VDDCORE — Core regulator capacitor connection |
Typical Applications
DSPIC33CK128MP205-E/PT is suitable for 6 applications: Digital Power Supplies (PFC / LLC), Brushless Motor Control (FOC), Automotive Control Modules, Solar Micro-Inverters, Industrial Sensing and Control Nodes, Wireless Charging and High-Density Chargers.
Digital Power Supplies (PFC / LLC)
The DSPIC33CK128MP205-E/PT excels in digitally controlled switch-mode power supplies such as totem-pole PFC and LLC resonant converters, where its high-resolution PWM with 250 ps effective resolution enables precise duty-cycle and phase-shift control at switching frequencies above 100 kHz. The three on-chip op-amps buffer current-shunt signals while the three comparators provide cycle-by-cycle overcurrent limiting with nanosecond-class trip latency, offloading fast protection from software. Operating at 100 MIPS, the core closes voltage and current loops at rates well beyond the switching frequency, and the CAN FD interface supports digital telemetry to system hosts in server and telecom rectifiers.
Recommended
Brushless Motor Control (FOC)
For field-oriented control of BLDC and PMSM motors, the DSPIC33CK128MP205-E/PT integrates everything a 48-pin FOC controller needs: high-resolution PWM driving the three-phase inverter, three on-chip op-amps for in-line or low-side current sensing, and comparators for hardware overcurrent trips. The 100 MHz core executes FOC current loops at 100 kHz-plus with DSP multiply-accumulate instructions, while 128 KB Flash holds sensorless observer algorithms. The -40C to +125C E-grade rating suits sealed motor housings, and AEC-Q100 family qualification supports automotive pumps, fans, and actuators where the CAN FD interface links to the vehicle network.
Recommended
Automotive Control Modules
The dsPIC33CK family is marketed with Automotive, AEC-Q100 qualification (per distributor listings), making the DSPIC33CK128MP205-E/PT a candidate for automotive subsystem controllers such as LED headlamp drivers, DC-DC auxiliary converters, pump control, and actuator nodes. The -40C to +125C operating range covers under-hood and near-engine environments, and the integrated CAN FD module communicates on modern in-vehicle networks with 64-byte payloads. Functional-safety (FuSa) support documentation simplifies safety-relevant design flows. For production, obtain PPAP documentation from Microchip to satisfy automotive OEM quality requirements alongside the -E temperature grade.
Recommended
Solar Micro-Inverters
Micro-inverter and power-optimizer designs benefit from the DSPIC33CK128MP205-E/PT's combination of 250 ps PWM resolution for phase-shifted full-bridge and LLC MPPT stages, plus three op-amps that condition panel current and voltage sense signals without external amplifiers. The 100 MIPS core runs MPPT algorithms, grid-synchronization PLLs, and anti-islanding logic concurrently, while 128 KB Flash accommodates grid-certification firmware stacks. The device's deterministic interrupt structure keeps the grid-current control loop phase-consistent, and the E-grade temperature rating tolerates the elevated ambient temperatures typical of rooftop and panel-back-mounted enclosures.
Recommended
Industrial Sensing and Control Nodes
In industrial automation, the DSPIC33CK128MP205-E/PT serves as an advanced sensing and control node combining analog integration with networking: the three on-chip op-amps amplify bridge and shunt sensor signals, an internal 12-bit ADC samples them, and SPI/I2C/UART plus CAN FD connect to PLC backbones. The 100 MHz core performs DSP filtering (FIR/IIR) on acquired waveforms for predictive-maintenance analytics at the edge. Operating from a standard 3.3V rail with -40C to +125C tolerance, the controller survives electrical-cabinet environments, and 128 KB Flash supports protocol stacks alongside application firmware without external memory.
Recommended
Wireless Charging and High-Density Chargers
Wireless power transmitter designs leverage the DSPIC33CK128MP205-E/PT's high-resolution PWM for frequency- and duty-controlled resonant half-bridges, its comparators for foreign-object and overcurrent protection, and its CAN/UART interfaces for Qi-class protocol communication with system MCUs. The 100 MIPS throughput sustains closed-loop power control at resonance while computing demodulated communication packets, and the op-amps condition coil current/voltage measurements. The -E temperature grade and AEC-Q100 family qualification suit automotive wireless-charging pads, where thermal environments are severe and functional-safety documentation may be requested by OEM customers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP205-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP205-I/PT | DSPIC33CK128MP206-E/PT | DSPIC33CK256MP205-E/PT | DSPIC33CK128MP204-E/PT |
|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm, PT) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Program Flash | 128 KB | 128 KB | 256 KB | 256 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 24 KB | 24 KB | 16 KB |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| PWM Resolution | 250 ps (HRPWM) | 250 ps | 250 ps | 250 ps | 250 ps |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Op-Amps / Comparators | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 |
Key Differentiators
- Extended -40C to +125C temperature grade (vs DSPIC33CK128MP205-I/PT)
- Memory headroom on the same footprint (vs DSPIC33CK128MP206-E/PT)
- Cost-optimized firmware reduction path (vs DSPIC33CK128MP204-E/PT)
- 250 ps high-resolution PWM with integrated analog (vs Functional-only competitors (TI C2000, ST STM32G4))
Design Notes
Supply the DSPIC33CK128MP205-E/PT from a clean 3.3V rail within the 3.0V-3.6V window. Decouple each VDD pin with 100 nF ceramic placed within 2 mm of the pin, plus one 4.7-10 uF bulk capacitor near the part. The VCAP pin requires the exact core-regulator capacitor specified in the Microchip datasheet - using the wrong value or ESR destabilizes the internal regulator and causes sporadic resets. Separate AVDD/AVSS via an RC or ferrite filter to preserve ADC accuracy.
Keep high-resolution PWM traces (PWMxH/L) short and away from analog op-amp inputs; the 250 ps PWM edges are fast enough to couple into the analog domain. Route the op-amp feedback network on a quiet analog ground island under AVSS. For motor-control layouts, place the current-shunt amplifier inputs (OPAxIN+/-) as a tightly matched Kelvin pair to the shunt resistor to minimize offset error in FOC current loops.
Do not mix temperature grades across a design revision: the -I/PT variant stops at +85C and will fail field units in +125C enclosures even though the pinout is identical. Verify the dual-partition Flash (live update) programming flow against the current Microchip programming specification before production, and reserve PGD/PGC pins (pins 4-5) exclusively for ICSP - sharing them with peripheral functions complicates in-circuit reprogramming.
Estimated: in a sealed 48-TQFP enclosure, junction temperature approximately equals ambient plus (typical core-peripheral power, order of 150-250 mW at 100 MHz) times the package theta-JA (order of 40-50 C/W for 7x7 TQFP on a 4-layer board), giving a rise of roughly 8-12 C. Confirm exact theta-JA from the Microchip package drawing and derate core frequency in thermally confined housings near +125C ambient.
Compliance Information
Distributor listings (Hotenda, DigiKey) identify the dsPIC33CK family as Automotive, AEC-Q100 with Functional Safety (FuSa) support. REACH/halogen/conflict-minerals status not stated in provided data.
