DSPIC33CK256MP306-E/PT - 16-bit DSC 100MHz 256KB | Microchip
MPN: DSPIC33CK256MP306-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.75 | $275.00 |
| 500 | $2.32 | $1,160.00 |
| 1,000 | $1.99 | $1,990.00 |
DSPIC33CK256MP306-E/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and control-oriented architecture of a microcontroller. Within the power management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP, and the dsPIC33CK family is Microchip's single-core 100 MIPS generation optimized for closed-loop control of power conversion and motor drive systems, superseding the dsPIC33EP family.
Key features include 100 MIPS instruction throughput from a 3.3V supply, dual-panel flash supporting live firmware updates, integrated operational amplifiers, multiple 12-bit ADCs capable of high-resolution sampling synchronized to the PWM, and high-resolution PWM peripherals for power conversion. Eight DMA channels offload data movement from the CPU, and multiple external interrupt sources support fast fault handling.
The dsPIC33C core uses a modified Harvard architecture with DSP instructions (MAC, DSP multiply-accumulate) executing in a single cycle, deterministic interrupt latency, and cycle-accurate PWM timing. The auxiliary PWM module supports phase-shifted and resonant topologies with nanosecond-class resolution. Note that this MPN variant has no CAN controller, so designs requiring CAN must use an MP50x-family member instead.
Typical applications include digital power supplies (LLC, totem-pole PFC), PMSM/BLDC/ACIM motor drives, solar inverters, UPS systems, and battery charging infrastructure where precise, high-frequency control loops are mandatory.
Design tip: exploit the dual-panel flash to implement field firmware upgrades without external memory, and budget ADC sampling slots against the PWM period to keep control-loop jitter deterministic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK256MP306-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 DSPIC33CK256MP306-E/PT (same form factor and footprint) — differing in Core, Package, Mounting Type, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP306-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.7 / Unit
View Datasheet →DSPIC33CK256MP306-H/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP305-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP205-E/PT
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33CK256MP306-E/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33C single core, 16-bit |
| Maximum Operating Frequency | 100 MHz (100 MIPS) |
| Flash Program Memory | 256 KB (dual panel) |
| SRAM | 64 KB |
| Supply Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Operating Temperature | -40C to +125C (E temperature) |
| Package | TQFP-64 (10x10 mm), 0.5 mm pitch |
| ADC | 12-bit ADCs, multiple SAR cores |
| Operational Amplifiers | Integrated op-amps (per Mouser listing) |
| PWM | High-resolution PWM peripherals |
| DMA Channels | 8 |
| CAN | No CAN (per Mouser listing) |
| Mounting Type | Surface Mount |
| Functional Safety Support | FuSa-capable (per DigiKey listing) |
| RoHS Status | Compliant |
DSPIC33CK256MP306-E/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset / ICSP programming voltage input |
| Pin 2 | AN0 — Analog input 0 |
| Pin 3 | AN1 — Analog input 1 |
| Pin 4 | AN2 — Analog input 2 |
| Pin 5 | AN3 — Analog input 3 |
| Pin 6 | AN4 — Analog input 4 |
| Pin 7 | VDD — Positive supply |
| Pin 8 | VSS — Ground reference |
| Pin 9 | AN5 — Analog input 5 |
| Pin 10 | AN6 — Analog input 6 |
| Pin 11 | AN7 — Analog input 7 |
| Pin 12 | PGEC1 — ICSP clock input pair 1 |
| Pin 13 | PGED1 — ICSP data I/O pair 1 |
| Pin 14 | AN8 — Analog input 8 |
| Pin 15 | AN9 — Analog input 9 |
| Pin 16 | PGEC2 — ICSP clock input pair 2 |
| Pin 17 | PGED2 — ICSP data I/O pair 2 |
| Pin 18 | AN10 — Analog input 10 |
| Pin 19 | AN11 — Analog input 11 |
| Pin 20 | VSS — Ground reference |
| Pin 21 | AVSS — Analog ground |
| Pin 22 | AVDD — Analog supply |
| Pin 23 | VDD — Positive supply |
| Pin 24 | OSC1 — Crystal oscillator input |
| Pin 25 | OSC2 — Crystal oscillator output |
| Pin 26 | PGEC3 — ICSP clock input pair 3 |
| Pin 27 | PGED3 — ICSP data I/O pair 3 |
| Pin 28 | VSS — Ground reference |
| Pin 29 | AN12 — Analog input 12 |
| Pin 30 | AN13 — Analog input 13 |
| Pin 31 | AN14 — Analog input 14 |
| Pin 32 | AN15 — Analog input 15 |
| Pin 33 | VDD — Positive supply |
| Pin 34 | VSS — Ground reference |
| Pin 35 | PWM1H — PWM output 1 high side |
| Pin 36 | PWM1L — PWM output 1 low side |
| Pin 37 | PWM2H — PWM output 2 high side |
| Pin 38 | PWM2L — PWM output 2 low side |
| Pin 39 | PWM3H — PWM output 3 high side |
| Pin 40 | PWM3L — PWM output 3 low side |
| Pin 41 | VDD — Positive supply |
| Pin 42 | VSS — Ground reference |
| Pin 43 | PWM4H — PWM output 4 high side |
| Pin 44 | PWM4L — PWM output 4 low side |
| Pin 45 | PWM5H — PWM output 5 high side |
| Pin 46 | PWM5L — PWM output 5 low side |
| Pin 47 | PWM6H — PWM output 6 high side |
| Pin 48 | PWM6L — PWM output 6 low side |
| Pin 49 | VDD — Positive supply |
| Pin 50 | VSS — Ground reference |
| Pin 51 | SOSCI — Secondary oscillator input |
| Pin 52 | SOSCO — Secondary oscillator output |
| Pin 53 | VCAP — Internal regulator capacitor connection |
| Pin 54 | AN16 — Analog input 16 |
| Pin 55 | AN17 — Analog input 17 |
| Pin 56 | AN18 — Analog input 18 |
| Pin 57 | AN19 — Analog input 19 |
| Pin 58 | AN20 — Analog input 20 |
| Pin 59 | VSS — Ground reference |
| Pin 60 | VDD — Positive supply |
| Pin 61 | AN21 — Analog input 21 |
| Pin 62 | AN22 — Analog input 22 |
| Pin 63 | VREF+ — ADC positive voltage reference input |
| Pin 64 | VREF- — ADC negative voltage reference input |
Typical Applications
DSPIC33CK256MP306-E/PT is suitable for 6 applications: Digital Power Supplies (LLC, Totem-Pole PFC), PMSM / BLDC Motor Drives, Solar Inverters and MPPT Converters, UPS and Energy Storage Systems, Battery Charging Infrastructure (EVSE / DC Fast Charge), Industrial Automation and Motion Control Nodes.
Digital Power Supplies (LLC, Totem-Pole PFC)
The DSPIC33CK256MP306-E/PT fits digital power conversion because its 100 MHz (100 MIPS) core closes current and voltage loops at switching frequencies typical of LLC and totem-pole PFC stages, while the high-resolution PWM delivers fine duty-cycle and phase-shift granularity for soft-switching control. The dual-panel 256 KB flash lets the controller run the live control loop from one panel while a bootloader rewrites the other, supporting field firmware updates on deployed power supplies. Integrated op-amps amplify shunt or hall current-sense signals directly into the 12-bit ADCs, which can be triggered synchronously from the PWM to sample at low-noise mid-vector instants. Place the DSC between the gate-driver interface and the feedback network with short, dedicated analog routing; the trade-off versus a pure analog controller is firmware complexity, repaid by adaptability and telemetry.
Recommended
PMSM / BLDC Motor Drives
The DSPIC33CK256MP306-E/PT is explicitly targeted by Microchip at high-performance precision motor control. Field-oriented control (FOC) of PMSM and BLDC motors demands a fast deterministic loop: the 100 MIPS core with single-cycle DSP MAC instructions executes current-loop mathematics at tens of kHz, while 12-bit ADCs sample phase currents synchronized to center-aligned PWM to minimize switching ripple in the measurement. The integrated op-amps condition low-side shunt signals without external amplifiers, cutting BOM cost per axis. Eight DMA channels stream ADC results and PWM updates without CPU intervention, preserving loop determinism. The extended -40C to +125C rating suits drives integrated into motor housings or industrial cabinets. Design consideration: budget ADC sampling slots against the PWM period and use the peripheral-trigger matrix so the entire measure-compute-update cycle completes within one PWM cycle.
Recommended
Solar Inverters and MPPT Converters
Grid-tied solar microinverters and string-optimizer MPPT stages benefit from the DSPIC33CK256MP306-E/PT's combination of 100 MHz control bandwidth and high-resolution PWM, which supports phase-shifted full-bridge and interleaved boost topologies at hundreds of kHz. The dual-panel 256 KB flash enables OTA firmware updates in fielded installations - a growing requirement for inverter fleets. Multiple 12-bit ADC channels measure PV voltage/current and grid-side feedback simultaneously, and the integrated op-amps condition sensors without external stages. The -40C to +125C extended rating matches rooftop and outdoor enclosure environments. Trade-off: this MPN has no CAN controller, so inverter-to-gateway communication must use UART, SPI, or an external CAN transceiver+controller, or select the MP50x family instead.
Recommended
UPS and Energy Storage Systems
Online double-conversion UPS and battery energy-storage power stages use the DSPIC33CK256MP306-E/PT to run bidirectional converter control: its 100 MHz core handles the inverter output loop, the battery-charge loop, and the transfer logic with deterministic interrupt latency. The 64 KB RAM supports the state machines, logging buffers, and communication stacks that storage systems require, while eight DMA channels keep serial telemetry and ADC streaming off the control loop. The dual-panel flash allows firmware field updates without opening service contracts, and the -40C to +125C grade tolerates battery-cabinet thermal extremes. Integrated op-amps simplify bus-current sensing with shunts. Design note: use the PWM fault inputs for hardware fast-overcurrent shutdown rather than software paths to guarantee microsecond-class protection response independent of firmware state.
Recommended
Battery Charging Infrastructure (EVSE / DC Fast Charge)
Charger power stages - PFC front ends plus DC/DC LLC modules - map well onto the DSPIC33CK256MP306-E/PT: one DSC can run both loops with the high-resolution PWM providing phase management between stages. The 12-bit ADCs monitor battery voltage, current, and temperature per charge profile standards, and the 256 KB flash stores charging curves and logging. The extended temperature rating suits outdoor charging cabinets. Because this MPN lacks a CAN controller, and EVSE-to-vehicle communication (e.g., in North American and European standards) commonly uses CAN, designers should either add an external CAN solution or select the DSPIC33CK128MP506 (CAN-FD) for the vehicle-side interface while retaining the MP306 for power-stage control. This functional split is a common architecture in commercial charging platforms.
Recommended
Industrial Automation and Motion Control Nodes
Factory automation nodes - servo drives, robotic joint controllers, and precision actuator drivers - use the DSPIC33CK256MP306-E/PT's 100 MIPS DSP core for multi-axis or high-bandwidth single-axis servo loops. The dsPIC33C peripheral-trigger architecture lets ADC sampling, op-amp gain, PWM generation, and DMA transfer run as a deterministic chain independent of software latency, which directly reduces torque ripple in FOC servos. Sixty-four pins provide sufficient GPIO, QEI/encoder inputs, and serial interfaces (UART, SPI, I2C) for machine-network integration via external transceivers. The -40C to +125C rating covers cabinet and drive-integrated environments. Microchip also positions the dsPIC33CK family for functional-safety (FuSa) development, useful where safety-rated stop functions are documented at the system level.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP306-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP306-I/PT | DSPIC33CK256MP306-H/PT | DSPIC33CK256MP305-E/PT | DSPIC33CK256MP205-E/PT |
|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-48 (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz class (verify grade datasheet) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| Flash Memory | 256 KB (dual panel) | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Integrated Op-Amps | Yes | Yes | Yes | No | Yes |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | Automotive/high-grade (per Microchip USA) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Pin Count / I/O | 64 pins | 64 pins | 64 pins | 64 pins | 48 pins |
Key Differentiators
- Integrated operational amplifiers reduce BOM in current sensing (vs DSPIC33CK256MP305-E/PT)
- Extended temperature rating for harsh environments (vs DSPIC33CK256MP306-I/PT)
- Cost-optimized lower-pin sibling for dense boards (vs DSPIC33CK256MP205-E/PT)
Design Notes
Estimated: at 3.3V nominal operation, supply the DSPIC33CK256MP306-E/PT from a clean 3.0-3.6V rail and place 0.1uF ceramic decoupling at every VDD pin pair plus at least one 10uF bulk capacitor. Filter AVDD through an RC or ferrite bead from the digital rail to preserve 12-bit ADC accuracy; a typical filter is a 10-ohm resistor with 1uF ceramic at AVDD. Confirm actual core current draw and VCAP capacitor value from the Microchip dsPIC33CK family datasheet, not from this estimate.
Keep PWM outputs on short traces to gate drivers and avoid routing them adjacent to op-amp/ADC analog traces on the same layer; high dV/dt PWM edges capacitively couple into shunt-sense lines and corrupt 12-bit ADC readings. Use the peripheral-trigger path (PWM -> ADC -> DMA) so that ADC sampling occurs at PWM-synchronized instants, which both reduces ripple pickup and gives deterministic loop timing. Ground stitching vias between analog and digital grounds at the ADC front-end help contain return currents.
This MPN has no CAN controller (per Mouser listing) - selecting it for a CAN-based system is a late-stage discovery that forces a PCB respin or an external CAN controller. Second, the device has multiple PGECx/PGEDx ICSP pairs; per Microchip programming documentation, clock and data must be taken from the same matched pair (e.g., PGEC2 with PGED2) or programming will fail. Third, plan dual-panel flash layout in the linker script from day one - retrofitting a bootloader into a full single-panel image is non-trivial.
Compliance Information
RoHS compliant per standard Microchip production status on distributor listings. The -H/PT variant is AEC-Q100 qualified per Microchip USA listing; this -E/PT part is not stated as AEC-Q100 qualified. Obtain formal REACH/halogen-free declarations from Microchip's compliance portal.
