DSPIC33CK128MP505-E/M4 - 100MHz 128KB CAN-FD DSC | Microchip
MPN: DSPIC33CK128MP505-E/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.05 | $50.50 |
| 100 | $4.46 | $446.00 |
| 500 | $3.94 | $1,970.00 |
| 1,000 | $3.52 | $3,520.00 |
DSPIC33CK128MP505-E/M4 Overview
A digital signal controller combines the compute throughput of a microcontroller with DSP engine features such as single-cycle MAC, barrel shifter, and hardware divide. Within the power-management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP, providing deterministic control loops for switched-mode power conversion and motor drive. The dsPIC33CK family, built on the dual-issue dsPIC33CK core, is Microchip's current-generation platform for digital power and advanced control, superseding the dsPIC33EP SMPS families.
Key differentiating features of the MP505 peripheral set include three integrated analog op-amps (usable in PGA mode), three analog comparators, a 12-bit high-speed ADC capable of up to 3.5 Msps, a 16-channel High-Resolution PWM with 250 ps effective resolution for fine duty-cycle and phase control, CAN Flexible Data (CAN-FD) with up to 8 Mbit/s data phase, and a Peripheral Trigger Generator (PTG) for hardware-sequenced autonomous operation.
The dsPIC33CK core executes most instructions in a single cycle at 100 MIPS, with a fixed-point DSP engine supporting (x)y addressing and modulo/bit-reversed modes. Multiple DMA channels offload ADC-to-RAM transfers, keeping the CPU free for the control loop. Context switching latency is minimized for nested interrupts, which matters for multi-ratio phase-shifted converters and FOC motor algorithms executed at tens of kilohertz.
Typical applications include digital power supplies (LLC, phase-shifted full bridge, totem-pole PFC), BLDC/PMSM field-oriented motor control, automotive subsystems such as pumps, fans and lighting ballasts, and high-current battery chargers where CAN-FD and precision PWM converge. The three on-chip op-amps can close current-shunt loops without external amplifiers, reducing BOM cost and board area.
Design consideration: the UQFN exposed pad must be soldered to a grounded thermal land to meet thermal and EMI targets; also budget the 3.3V single-supply domain when interfacing to 5V sensors.
This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK128MP505-E/M4 — 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 DSPIC33CK128MP505-E/M4 (same form factor and footprint) — differing in Package, CAN Interface, Architecture, Core, Analog Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP505-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.75 / Unit
View Datasheet →DSPIC33CK64MP505-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.28 / Unit
View Datasheet →DSPIC33CK32MP505-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK128MP505-I/M4
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MP205-E/PT
✅ Drop-In✓ In Stock
$3.61 / Unit
View Datasheet →DSPIC33CK128MP505-E/M4 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| Maximum Clock Frequency | 100 MHz (100 MIPS) |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 16 KB |
| Supply Voltage | 3.3 V |
| On-chip Op-Amps | 3 |
| Analog Comparators | 3 |
| CAN Interface | CAN FD |
| PWM | High-Resolution PWM (16-channel family module, 250 ps effective resolution) |
| Peripheral Trigger Generator | Yes (PTG) |
| Package | 48-UQFN (6x6 mm) with exposed pad |
| Package Code | M4 |
| Operating Temperature Range | -40C to +125C (E grade) |
| Qualification | AEC-Q100 automotive |
| Mounting Type | Surface Mount |
| DSP Features | Fixed-point DSP engine, barrel shifter, single-cycle MAC |
| RoHS Status | Compliant |
DSPIC33CK128MP505-E/M4 m4 Pin Configuration Guide
Pin configuration for DSPIC33CK128MP505-E/M4 (m4 package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33CK128MP505-E/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MP505-E/M4 is suitable for 6 applications: Digital Power Supplies (LLC / Totem-Pole PFC), BLDC/PMSM Field-Oriented Motor Control, Automotive Pumps, Fans and Lighting, Battery Chargers and Power Banks (High-Current DC-DC), Industrial Sensing and Control Nodes, Solar Micro-Inverters and Power Optimizers.
Digital Power Supplies (LLC / Totem-Pole PFC)
The DSPIC33CK128MP505-E/M4 is a strong fit for digitally controlled LLC converters and totem-pole PFC stages because its high-resolution PWM delivers 250 ps-class edge resolution, allowing precise phase-shift and duty-cycle control at the hundreds-of-kilohertz switching frequencies these topologies require. The 100 MHz dual-issue core closes current and voltage loops in software with single-cycle MAC operations, while three on-chip op-amps condition shunt or current-transformer signals without external amplifiers, and three comparators provide hardware overcurrent protection with cycle-level latency. Typical usage pairs the ADC with DMA for autonomous sampling aligned to PWM triggers, keeping jitter low and CPU load minimal. Unlike analog controllers, firmware permits mode switching, burst operation, and adaptive dead-time; the trade-off is that software loop delay must be budgeted against analog-only bandwidth in very fast transient events.
Recommended
BLDC/PMSM Field-Oriented Motor Control
For field-oriented control of BLDC and PMSM motors, the DSPIC33CK128MP505-E/M4 combines the compute elements FOC needs: a 100 MIPS core for Park/Clarke transforms and dual PI current loops, high-resolution PWM for low-torque-ripple inverter drive, and integrated op-amps that amplify low-side shunt currents directly, cutting BOM cost versus external instrumentation amplifiers. The 12-bit high-speed ADC samples all three phase currents within one PWM period, and DMA moves results to RAM without CPU intervention. The three comparators implement hardware cycle-by-cycle current limiting independent of software. Practical performance benefit: the dsPIC33CK core sustains current-loop bandwidths in the multi-kilohertz range at 20-100 kHz PWM frequencies typical of industrial drives. Consider the six output channels needed for a three-phase bridge and use Peripheral Pin Select to route gate-drive signals optimally on your PCB layout.
Recommended
Automotive Pumps, Fans and Lighting
AEC-Q100 qualification with the E temperature grade (-40C to +125C) makes the DSPIC33CK128MP505-E/M4 appropriate for automotive auxiliary systems such as coolant pumps, radiator fans, LED headlamp ballasts, and blower motors. The integrated CAN-FD interface connects these nodes to vehicle networks at data-phase rates up to 8 Mbit/s, while the PTG (Peripheral Trigger Generator) can sequence PWM/ADC operations autonomously, letting the controller run efficient sensorless or low-oversampling control algorithms. The 48-pin UQFN 6x6 mm package saves board area in space-constrained modules. Performance consideration: verify self-heating at full PWM output drive near the +125C ceiling, since junction margin narrows at maximum ambient; the exposed-pad ground land is mandatory for thermal dissipation. Use the -I/M4 industrial variant only in non-automotive positions to preserve AEC-Q100 traceability across the build of materials.
Recommended
Battery Chargers and Power Banks (High-Current DC-DC)
Battery charging stages benefit from the DSPIC33CK128MP505-E/M4's blend of precision and throughput: the high-resolution PWM shapes synchronous buck or boost switching edges for low output ripple during constant-current regulation, the 12-bit ADC with DMA provides accurate current telemetry across the CC/CV profile, and CAN-FD (or UART-based protocols) reports state to system hosts or battery-management masters. The three op-amps can be configured as PGA stages to scale shunt voltages across wide dynamic range from trickle charge to fast-charge currents. Hardware comparators deliver instantaneous overcurrent shutdown on charge faults. In a typical topology the DSC drives a half-bridge at 200-500 kHz, adjusting dead time in firmware to maximize efficiency across load. Trade-off: software charge state machines add validation effort compared with fixed-function charger ICs, but permit multi-chemistry support and field updates in one silicon SKU.
Recommended
Industrial Sensing and Control Nodes
As an industrial sensing and control node, the DSPIC33CK128MP505-E/M4 offers a single-chip solution for signal acquisition and actuation: the analog front end (op-amps, comparators, high-speed ADC) conditions bridge, shunt, and rail sensors, while the PTG automates timed sample-and-decide sequences with minimal CPU intervention. The 128KB Flash accommodates protocol stacks, compensation tables, and calibration routines; the 16KB RAM buffers waveform captures for condition-monitoring analytics. Digital connectivity via CAN-FD, UART, SPI and I2C integrates the node into factory networks or daisy-chained control loops. Practical usage: dedicate one op-amp to a 4-20 mA or ratiometric sensor channel and use PPS to remap communication pins for connector-constrained layouts. Performance consideration: the 100 MIPS core executes notch and FIR filtering on the fly, enabling single-chip vibration or current-signature monitoring without an external DSP.
Recommended
Solar Micro-Inverters and Power Optimizers
Grid-tied micro-inverter and power-optimizer designs use the DSPIC33CK128MP505-E/M4 to run MPPT algorithms and the grid-synchronization control loop in one device. The high-resolution PWM generates phase-shifted or interleaved switching waveforms with fine duty granularity, directly improving efficiency at partial irradiance, while the fast 12-bit ADC samples panel voltage/current and grid waveforms with DMA-driven deterministic timing. The three on-chip comparators support hardware zero-crossing detection and fast fault shutdown. The core's 100 MIPS budget simultaneously sustains software phase-locked-loop (SPLL) grid tracking and MPPT perturb-and-observe or incremental-conductance routines. Typical operating point: interleaved boost stages at 100-300 kHz with the DSC sequencing both phases. Note that anti-islanding and grid-code compliance firmware adds Flash overhead, which is why the 128KB part is preferred over smaller memory tiers in this application.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP505-E/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP505-E/M4 | DSPIC33CK64MP505-E/M4 | DSPIC33CK32MP505-E/M4 | DSPIC33CK128MP505-I/M4 | DSPIC33CK128MP205-E/PT |
|---|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 64-TQFP (PT) - larger footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33CK, 100 MHz (100 MIPS) | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz |
| Flash Memory | 128 KB | 256 KB (+100%) | 64 KB (-50%) | 32 KB (-75%) | 128 KB | 128 KB |
| On-chip Op-Amps | 3 | 3 | 3 | 3 | 3 | 3 |
| CAN Interface | CAN FD | CAN FD | CAN FD | CAN FD | CAN FD | CAN FD |
| Pin Count | 48 | 48 | 48 | 48 | 48 | 64 |
Key Differentiators
- Integrated analog signal chain (vs DSPIC33CK32MP505-E/M4)
- More firmware headroom in the same footprint (vs DSPIC33CK64MP505-E/M4)
- Automotive qualification (vs DSPIC33CK128MP505-I/M4)
- Compact control-oriented package (vs DSPIC33CK128MP205-E/PT)
Design Notes
The 48-UQFN (M4) exposed pad is the primary ground and thermal path. Create a solder-mask-defined land matching the datasheet pad geometry, with a 5x5 via array (0.3 mm vias) connecting to the internal ground plane. Underfill is unnecessary at this size, but ensure the stencil apertures cover approximately 70-80% of the pad to prevent voiding. Pin 1 is at the top-left dot marker with counter-clockwise numbering per the package drawing in the manufacturer datasheet.
The dsPIC33CK family runs from a single 3.3V rail; provide separate VDD and AVDD filtering. Place a 0.1 uF X7R capacitor within 2 mm of each VDD pin plus one 10 uF bulk capacitor per rail. Feed AVDD through an RC or ferrite filter (e.g., 10 ohm + 1 uF) from VDD to keep PWM switching noise out of the ADC reference domain, preserving converter accuracy in digital power loops. Do not omit the dedicated VCAP core-regulator capacitor specified in the datasheet - the internal LDO becomes unstable without it.
High-resolution PWM edges with 250 ps-class resolution create fast dv/dt. Route gate-drive traces with ground return directly beneath, keep series gate resistors close to the driver, and separate analog sensor traces from PWM routing on adjacent layers with a ground plane between them. Use Peripheral Pin Select to move digital functions away from analog-sensitive corner pins during layout review rather than after routing.
Two frequent mistakes with this family: (1) programming the MCLR pin weakly pulled and then losing debug access in-circuit - keep the standard 10 kohm pull-up and programming connector even on production boards; (2) assuming the -I/M4 industrial variant substitutes for the AEC-Q100 -E/M4 in automotive builds; the E grade and qualification records differ, so BOM substitution must be controlled. Also verify CAN-FD bit timing against the actual CAN clock source, since data-phase rates up to 8 Mbit/s are sensitive to oscillator tolerance.
Compliance Information
AEC-Q100 automotive qualification per Microchip/distributor part data (datasheets.com part listing). RoHS status compliant for current Microchip DSC production; REACH and halogen-free status not stated in provided data.
