DSPIC33EP256GM306-I/PT - 70 MIPS 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33EP256GM306-I/PT ✓ Hoạt độngDSPIC33EP256GM306-I/PT Tóm tắt
A Digital Signal Controller (DSC) is a hybrid microcontroller/DSP that fuses a deterministic MCU control loop with deterministic-cycle DSP math (single-cycle MAC, barrel shifter, dual 40-bit accumulators). Within the broader taxonomy it sits below MCU and above DSP: microcontroller -> DSC -> microcontroller with DSP engine -> embedded control. DSCs bridge the gap where MCUs lack the math throughput for field-oriented control (FOC) or digital PFC, and where standalone DSPs lack the deterministic interrupt response and on-chip analog of an MCU.
Key features include a 70 MIPS (60 MHz core clock) modified Harvard core with single-cycle multiply-accumulate, dual 40-bit accumulators, and hardware DO/REPEAT loops. The integrated analog comprises 12-bit ADC, 12-bit DAC, four on-chip operational amplifiers for current sensing, and high-resolution PWM with 7.5 ns PWM edge placement resolution. The on-chip op amps and dedicated PWM/ADC/FOC trigger logic let engineers implement sensorless FOC on a 3-phase PMSM/BLDC with no external analog chain.
Typical applications include field-oriented motor control (PMSM, BLDC, ACIM, SR), digital power conversion (PFC, LLC, phase-shifted full-bridge), solar micro-inverters, and high-performance lighting (LED drivers with constant-current control). The DSPIC33EP256GM306 family is widely adopted in appliance white goods, industrial drives, and HVAC compressors.
When designing with this DSC, ensure all VDD/VSS pins are connected per the datasheet - the device has multiple VDD/VSS pairs that must all be tied for programming and operation. Decouple each VDD with a 100 nF ceramic capacitor placed within 3 mm of the pin, and follow the recommended 4-layer PCB stackup for analog/PWM noise isolation.
This page synthesizes distributor pricing, dsPIC33EP family same-package variants, and practical FOC design guidance that goes beyond the manufacturer datasheet. Cross-brand drop-in alternatives are not generally available because dsPIC33E pinout and Peripheral Pin Select (PPS) are Microchip-proprietary.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33EP256GM306-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33EP256GM306-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash), Operating Temperature, Core Architecture, PWM Channels.
DSPIC33EP128GM306-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP256GM310-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP512GM306-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP256GP306-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP256GM604-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33EP256GM306-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33E DSC (16-bit modified Harvard) |
| Core Performance | 70 MIPS (60 MHz core clock) |
| Program Memory (Flash) | 256 KB (85.5K x 24 words) |
| Data RAM | 16 KB |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| ADC | 12-bit, multi-channel |
| DAC | 12-bit |
| On-chip Operational Amplifiers | 4 (dedicated for current sensing) |
| PWM Channels | 12 PWM, 7.5 ns resolution |
| Quadrature Encoder Interface (QEI) | Yes |
| IC/OC Timers | 8/8 |
| Hộp | 64-pin TQFP (PT) 10x10 mm, 0.5 mm pitch |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount (T&R) |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33EP256GM306-I/PT
| Chân 1 | RE0 — I/O port E bit 0 |
| Chân 2 | RE1 — I/O port E bit 1 |
| Chân 3 | RE2 — I/O port E bit 2 |
| Chân 4 | RE3 — I/O port E bit 3 |
| Chân 5 | RE4 — I/O port E bit 4 |
| Chân 6 | RE5 — I/O port E bit 5 |
| Chân 7 | RE6 — I/O port E bit 6 |
| Chân 8 | RE7 — I/O port E bit 7 |
| Chân 9 | RG6 — I/O port G bit 6 |
| Chân 10 | RG7 — I/O port G bit 7 |
| Chân 11 | RG8 — I/O port G bit 8 |
| Chân 12 | RG9 — I/O port G bit 9 |
| Chân 13 | VDD — Power supply (3.0-3.6V) |
| Chân 14 | VSS — Ground |
| Chân 15 | RA0 — I/O port A bit 0 / AN0 |
| Chân 16 | RA1 — I/O port A bit 1 / AN1 |
| Chân 17 | RA2 — I/O port A bit 2 / AN2 |
| Chân 18 | RA3 — I/O port A bit 3 / AN3 |
| Chân 19 | RA4 — I/O port A bit 4 / AN4 |
| Chân 20 | RA5 — I/O port A bit 5 / AN5 |
| Chân 21 | RA6 — I/O port A bit 6 |
| Chân 22 | RA7 — I/O port A bit 7 |
| Chân 23 | RB0 — I/O port B bit 0 |
| Chân 24 | RB1 — I/O port B bit 1 |
| Chân 25 | RB2 — I/O port B bit 2 |
| Chân 26 | RB3 — I/O port B bit 3 |
| Chân 27 | RB4 — I/O port B bit 4 |
| Chân 28 | RB5 — I/O port B bit 5 |
| Chân 29 | RB6 — I/O port B bit 6 / PGC2 |
| Chân 30 | RB7 — I/O port B bit 7 / PGD2 |
| Chân 31 | RB8 — I/O port B bit 8 |
| Chân 32 | RB9 — I/O port B bit 9 |
| Chân 33 | VDD — Power supply (3.0-3.6V) |
| Chân 34 | VSS — Ground |
| Chân 35 | RC0 — I/O port C bit 0 |
| Chân 36 | RC1 — I/O port C bit 1 |
| Chân 37 | RC2 — I/O port C bit 2 |
| Chân 38 | RC3 — I/O port C bit 3 |
| Chân 39 | RC4 — I/O port C bit 4 |
| Chân 40 | RC5 — I/O port C bit 5 |
| Chân 41 | RC6 — I/O port C bit 6 |
| Chân 42 | RC7 — I/O port C bit 7 |
| Chân 43 | RC8 — I/O port C bit 8 |
| Chân 44 | RC9 — I/O port C bit 9 |
| Chân 45 | RD0 — I/O port D bit 0 |
| Chân 46 | RD1 — I/O port D bit 1 |
| Chân 47 | RD2 — I/O port D bit 2 |
| Chân 48 | RD3 — I/O port D bit 3 |
| Chân 49 | RD4 — I/O port D bit 4 |
| Chân 50 | RD5 — I/O port D bit 5 |
| Chân 51 | RD6 — I/O port D bit 6 |
| Chân 52 | RD7 — I/O port D bit 7 |
| Chân 53 | RD8 — I/O port D bit 8 |
| Chân 54 | RD9 — I/O port D bit 9 |
| Chân 55 | VDD — Power supply (3.0-3.6V) |
| Chân 56 | VSS — Ground |
| Chân 57 | RF0 — I/O port F bit 0 |
| Chân 58 | RF1 — I/O port F bit 1 |
| Chân 59 | RF2 — I/O port F bit 2 |
| Chân 60 | RF3 — I/O port F bit 3 |
| Chân 61 | RF4 — I/O port F bit 4 |
| Chân 62 | RF5 — I/O port F bit 5 |
| Chân 63 | RF6 — I/O port F bit 6 |
| Chân 64 | OSCI — Oscillator input |
Ứng dụng tiêu biểu
DSPIC33EP256GM306-I/PT phù hợp cho 6 Áp dụngs: Field-Oriented Control of PMSM/BLDC Motors, Digital Power Conversion (PFC, LLC, Phase-Shifted Full-Bridge), Solar Micro-Inverters and String Inverters, HVAC Compressor Drives, Industrial Servo Drives, High-Performance LED Lighting Drivers.
Field-Oriented Control of PMSM/BLDC Motors
The DSPIC33EP256GM306-I/PT is purpose-built for sensorless and sensored FOC of 3-phase PMSM and BLDC motors. Its 70 MIPS core runs the Park/Clarke inverse transforms and PI current loops within 2-3 microseconds per PWM cycle, while 4 on-chip operational amplifiers sense phase currents directly from low-side shunts - no external analog front-end required. The 12-bit ADC with dual sample-and-hold captures all three currents simultaneously, and 12 PWM channels with 7.5 ns edge placement deliver the center-aligned switching that FOC demands. Microchip's MPLAB X with motorBench Development Suite auto-generates PI tuning parameters and observer code targeting this exact part, dramatically shortening development time.
Được đề xuất
Digital Power Conversion (PFC, LLC, Phase-Shifted Full-Bridge)
The DSPIC33EP256GM306-I/PT's 70 MIPS throughput and 7.5 ns PWM resolution make it suitable for digital PFC and DC/DC converters. The dsPIC DSC core executes digital average current-mode control loops for boost PFC and current-mode LLC at 100-200 kHz switching frequencies, while the on-chip 12-bit ADC samples inductor and switch currents with deterministic latency. The 16 KB SRAM is sufficient for full-state controllers and observer-based schemes. Microchip's AN1078 application note provides a complete 200W digital PFC reference design targeting this exact family.
Được đề xuất
Solar Micro-Inverters and String Inverters
The DSPIC33EP256GM306-I/PT runs MPPT algorithms for photovoltaic micro-inverters and string inverters at 70 MIPS, easily executing incremental-conductance or P&O algorithms at 50 Hz loop rates. The integrated op amps sense panel current and grid voltage directly, while the high-resolution PWM drives the DC/DC boost stage and full-bridge grid-tie inverter. The 256 KB Flash stores grid-tie firmware with anti-islanding algorithms per IEEE 1547. Note that grid-tie designs require reinforced isolation between the DSC and the AC mains - typical implementations use ISO1050 or ADM3251 for digital isolation.
Được đề xuất
HVAC Compressor Drives
Variable-speed HVAC compressors benefit from the DSPIC33EP256GM306-I/PT's integrated FOC capability and 256 KB Flash, which is sufficient for compressor control plus Modbus/CAN communication stacks. The 4 on-chip op amps sense compressor current directly, and 70 MIPS throughput runs sensorless FOC at 16 kHz PWM without CPU saturation. Industrial temperature range (-40C to +85C) suits outdoor compressor installations. Microchip's AN1160 application note provides HVAC-specific FOC firmware for this family.
Được đề xuất
Industrial Servo Drives
Industrial servo drives requiring high-bandwidth current loops are well-served by the DSPIC33EP256GM306-I/PT. The 70 MIPS DSC core runs FOC with 8 kHz current loop bandwidth and 16 kHz PWM, while QEI interfaces to incremental encoders for position feedback. The on-chip op amps eliminate external analog chains, reducing BOM cost by 3-5 USD per axis. EtherCAT or PROFINET communication stacks fit in 256 KB Flash alongside the servo control algorithm. The 64-pin TQFP footprint fits dual-axis servo drives sharing one DSC.
Được đề xuất
High-Performance LED Lighting Drivers
Constant-current LED drivers with dimming and color-mixing benefit from the DSPIC33EP256GM306-I/PT's PWM flexibility and DSP math. The 12-bit DAC generates smooth dimming curves, while 12 PWM channels drive RGB or tunable-white LED strings with 7.5 ns resolution - well below the flicker-perception threshold. The 70 MIPS core executes CCM/DCM boundary conduction mode algorithms for PFC-boost LED drivers at 200 kHz. 256 KB Flash supports DALI-2 or DMX512 communication stacks for professional lighting fixtures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33EP256GM306-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC33EP128GM306-I/PT | DSPIC33EP256GM310-I/PT | DSPIC33EP512GM306-I/PT | DSPIC33EP256GP306-I/PT |
|---|---|---|---|---|---|
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 128 KB (-50%) | 256 KB (same) | 512 KB (+100%) | 256 KB (same) |
| RAM | 16 KB | 16 KB (same) | 32 KB (+100%) | 32 KB (+100%) | 16 KB (same) |
| On-chip Op Amps | 4 (motor control) | 4 (same) | 4 (same) | 4 (same) | 0 (general purpose - removed) |
| PWM Channels | 12 | 12 (same) | 12 (same) | 12 (same) | 12 (same) |
| Core Speed | 70 MIPS (60 MHz) | 70 MIPS (same) | 70 MIPS (same) | 70 MIPS (same) | 70 MIPS (same) |
| Family Variant | Motor Control (GM) | Motor Control (GM) | Motor Control (GM) | Motor Control (GM) | General Purpose (GP) |
Bảo phân biệt quan trọng
- On-chip op amps eliminate external analog chain (vsDSPIC33EP256GP306-I/PT)
- Same package as 128 KB variant for cost-down migration (vsDSPIC33EP128GM306-I/PT)
- 256 KB Flash provides headroom for full FOC + comms stack (vsDSPIC33EP128GM306-I/PT)
Ghi chú thiết kế
The DSPIC33EP256GM306-I/PT requires a 3.0-3.6V regulated supply with multiple VDD/VSS pins (typically 3 VDD pairs and 3 VSS pairs on the 64-pin TQFP). All VDD pins MUST be connected per datasheet section 2 - even unconnected VDD pins cause programming failures and erratic operation. Decouple each VDD with a 100 nF ceramic capacitor placed within 3 mm of the pin. For analog AVDD, add a ferrite bead or 10 ohm resistor between digital VDD and AVDD to isolate PWM switching noise. A bulk 10 uF tantalum or ceramic cap should sit near the supply entry point.
For FOC motor control applications, use a 4-layer PCB with dedicated ground and power planes. Route the analog current-sense traces (from op amp outputs to ADC inputs) directly above a continuous ground plane, away from PWM signals. Keep the low-side shunt resistors within 10 mm of the op amp inputs. The exposed thermal pad (if present on this TQFP variant - check package outline) should be soldered to a ground copper pour of at least 100 mm^2. Place programming header (PGECx/PGEDx) at board edge for ICSP access.
Common pitfalls when designing with this DSC: (1) using only one pair of VDD/VSS pins causes intermittent programming failure - always connect all pairs. (2) Forgetting to configure the PPS (Peripheral Pin Select) registers leaves remappable peripherals on default pins, not the pins you routed on the PCB. (3) Disabling the on-chip op amps via PMD bits reduces current consumption but disables current sensing - keep them active during FOC. (4) The 12-bit ADC accuracy depends on proper AVDD filtering; bypassing AVDD to AVSS with 100 nF + 10 uF caps is mandatory. (5) The device has multiple PGECx/PGEDx pairs - any pair works for ICSP but both pins of the selected pair must be used together.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - the -I/PT variant is industrial grade -40C to +85C; AEC-Q100 grade 1 automotive versions are not offered in this exact family.