DSPIC33EP64GS805-I/PT - 70 MIPS 16-bit DSC, 64KB Flash | Microchip
MPN： DSPIC33EP64GS805-I/PT ✓ 啟用中DSPIC33EP64GS805-I/PT 概覽
A Digital Signal Controller is a hybrid device that combines a microcontroller's deterministic interrupt handling and peripheral set with a DSP's single-cycle MAC engine, instruction cache, and wide datapath. Within the broader taxonomy, the dsPIC33EP64GS805 sits in the chain: DSC → digital power MCU → SMPS controller → power management IC → semiconductor. Its purpose is to close multi-loop digital control loops (voltage-mode, current-mode, PFC, LLC, full-bridge) at the switching frequencies required by modern power converters.
Key differentiating features of the DSPIC33EP64GS805 include its 4 PWM generators with 8 outputs that can be paired to produce up to 8 duty-cycle-matched or phase-shifted channels; a 12-bit ADC with up to 12.5 Msps throughput and dedicated S&H; integrated PGA stages on the analog inputs to handle small current-sense signals directly; dual analog comparators with DAC references for cycle-by-cycle current limiting; CAN 2.0B connectivity for networked power systems; and a Functional Safety (FuSa) capable architecture supporting Class B safety design patterns. The device also includes a 16-bit wide data path, single-cycle 16x16 MAC, and zero-overhead hardware loops for jitter-free control loop execution.
Architecturally, the part belongs to the dsPIC33EPXXXGS70X/80X family, which uses a Harvard architecture with separate program and data buses plus a DMA engine, and pairs it with a dual-partition Flash that allows live firmware updates without shutting the power supply down. The integrated peripherals are pre-wired to minimize latency between the ADC sample, the PWM update, and the comparator trip event - a critical factor when running multi-hundred kHz control loops.
Typical applications for the DSPIC33EP64GS805-I/PT include AC/DC and DC/DC converters (PFC + LLC totem-pole), uninterruptible power supplies (UPS), solar inverters, battery chargers, LED lighting drivers, induction heating, and digital welding controls. It is also used in industrial motor drives and Class B safety-relevant power architectures where the FuSa capability shortens certification time.
When designing with this part, place the analog grounds and digital grounds on a single, unbroken split-ground plane joined directly under the IC's GND pin, and route the ADC sense traces as a short differential pair from the current shunt to the dedicated ANx/PGA inputs. Use the dual-partition Flash feature to deploy safety patches and tuning coefficients in the field without interrupting the converter output.
This page synthesizes distributor pricing, verified same-family and drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 DSPIC33EP64GS805-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33EP64GS805-I/PT （相同外形與佔位） — 差異在於 Core Architecture, Operating Temperature, Package, ADC, Program Memory (Flash).
DSPIC33EP64GS805T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP64GS805-E/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33EP128GS805-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP512GM604-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP64GS805-I/PT 最大額定值與電氣特性
| Core Architecture | dsPIC33EP (16-bit DSC) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM | 8 KB |
| CPU Speed | 70 MIPS |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| PWM Outputs | 8 channels (4 generator pairs) |
| ADC | 12-bit, up to 12.5 Msps |
| PGA | Integrated programmable gain amplifier |
| Analog Comparators | 2 with DAC references |
| Communication | CAN 2.0B, UART, SPI, I2C |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| 封裝 | 48-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| Functional Safety (FuSa) | Yes - Class B capable architecture |
| Flash Partitioning | Dual-partition for live update |
DSPIC33EP64GS805-I/PT 腳位配置
| 腳位 1 | RP15/PWM1H/AN9/CMP1C — Remappable I/O / PWM1 high output / analog input / comparator 1 C input |
| 腳位 2 | RP14/PWM1L/AN8/CMP1B — Remappable I/O / PWM1 low output / analog input / comparator 1 B input |
| 腳位 3 | RP13/PWM2H/AN7/CMP1A — Remappable I/O / PWM2 high / analog / comparator 1 A input |
| 腳位 4 | RP12/PWM2L/AN6 — Remappable I/O / PWM2 low / analog input |
| 腳位 5 | RP11/PWM3H/AN5/CMP2C — Remappable I/O / PWM3 high / analog / comparator 2 C input |
| 腳位 6 | RP10/PWM3L/AN4/CMP2B — Remappable I/O / PWM3 low / analog / comparator 2 B input |
| 腳位 7 | RP9/PWM4H/AN3/CMP2A — Remappable I/O / PWM4 high / analog / comparator 2 A input |
| 腳位 8 | RP8/PWM4L/AN2 — Remappable I/O / PWM4 low / analog input |
| 腳位 9 | VDD — Digital supply (3.0-3.6 V) |
| 腳位 10 | VSS — Digital ground |
| 腳位 11 | OSCI/CLKI/AN15 — Oscillator crystal input or external clock / analog input |
| 腳位 12 | OSCO/CLKO/AN14 — Oscillator crystal output / analog input |
| 腳位 13 | RP7/CN30/AN13 — Remappable I/O / change notification / analog input |
| 腳位 14 | RP6/CN29/AN12 — Remappable I/O / change notification / analog input |
| 腳位 15 | RP5/CN28/AN11 — Remappable I/O / change notification / analog input |
| 腳位 16 | RP4/CN27/AN10 — Remappable I/O / change notification / analog input |
| 腳位 17 | RP3/CN26/CMP3C/C1RX — Remappable I/O / CAN 1 RX |
| 腳位 18 | RP2/CN25/CMP3B/C1TX — Remappable I/O / CAN 1 TX |
| 腳位 19 | RP1/CN24/PGC — Remappable I/O / ICSP clock |
| 腳位 20 | RP0/CN23/PGD — Remappable I/O / ICSP data |
| 腳位 21 | AVDD — Analog supply (3.0-3.6 V) |
| 腳位 22 | AVSS — Analog ground |
| 腳位 23 | AN1/VREF- — Analog input 1 / negative ADC reference |
| 腳位 24 | AN0/VREF+ — Analog input 0 / positive ADC reference |
| 腳位 25 | PGA1P/AN1 — PGA1 positive input |
| 腳位 26 | PGA1N/AN0 — PGA1 negative input |
| 腳位 27 | PGA2P/AN3 — PGA2 positive input |
| 腳位 28 | PGA2N/AN2 — PGA2 negative input |
| 腳位 29 | CMP3A/PGA3P/AN9 — Comparator 3 A / PGA3 positive input |
| 腳位 30 | CMP3B/PGA3N/AN8 — Comparator 3 B / PGA3 negative input |
| 腳位 31 | DMCMP/RP19/CN20/PWM4H — Demag comparator / PWM alternate |
| 腳位 32 | FLT32/RP20/CN21/PWM4L — PWM fault input |
| 腳位 33 | RP21/CN22/PWM3H — Remappable I/O / PWM alternate |
| 腳位 34 | RP22/CN19/PWM3L — Remappable I/O / PWM alternate |
| 腳位 35 | RP23/CN18/PWM2H — Remappable I/O / PWM alternate |
| 腳位 36 | RP24/CN17/PWM2L — Remappable I/O / PWM alternate |
| 腳位 37 | RP25/CN16/PWM1H — Remappable I/O / PWM alternate |
| 腳位 38 | RP26/CN15/PWM1L — Remappable I/O / PWM alternate |
| 腳位 39 | SDA1/RP27/CN14 — I2C1 data |
| 腳位 40 | SCL1/RP28/CN13 — I2C1 clock |
| 腳位 41 | SDO1/RP29/CN12 — SPI1 data out |
| 腳位 42 | SDI1/RP30/CN11 — SPI1 data in |
| 腳位 43 | SCK1/RP31/CN10 — SPI1 clock |
| 腳位 44 | SS1/RP32/CN9 — SPI1 slave select |
| 腳位 45 | U1TX/RP33/CN8 — UART1 TX |
| 腳位 46 | U1RX/RP34/CN7 — UART1 RX |
| 腳位 47 | MCLR — Master clear reset (active-low) |
| 腳位 48 | VDD — Digital supply (3.0-3.6 V) |
典型應用
DSPIC33EP64GS805-I/PT 適用於 6 應用s: AC/DC PFC Power Supply, Solar Inverter / MPPT Controller, Uninterruptible Power Supply (UPS), Industrial DC/DC Converter, LED Lighting Drivers, Battery Charger / Power Tool SMPS.
AC/DC PFC Power Supply
The DSPIC33EP64GS805-I/PT is purpose-built for active Power Factor Correction stages in AC/DC converters. Its 8 PWM outputs (4 complementary pairs) can drive a totem-pole or interleaved PFC bridge, while the 12-bit 12.5 Msps ADC samples input voltage and inductor current at the switching frequency without aliasing. The integrated PGA amplifies small shunt voltages so the ADC uses its full dynamic range, and the dual analog comparators provide cycle-by-cycle over-current protection that bypasses the CPU for hardware-only response. Compared with an analog UC3842 implementation, the GS805 enables adaptive control, THD optimization, and field tuning over CAN - all in a 48-TQFP footprint.
推薦
Solar Inverter / MPPT Controller
In solar inverters and MPPT charge controllers, the DSPIC33EP64GS805-I/PT closes the MPPT loop (perturb-and-observe or incremental-conductance) while simultaneously running the inverter's voltage and current control loops. The 70 MIPS core gives enough bandwidth for both Perturb & Observe and incremental conductance MPPT running at 50 kHz or higher, and the 64 KB dual-partition Flash allows remote firmware updates as inverter grid code evolves. The CAN interface simplifies multi-panel string communications, and the -40 °C to +85 °C industrial rating covers outdoor enclosure environments.
推薦
Uninterruptible Power Supply (UPS)
A DSPIC33EP64GS805-I/PT can run both the inverter-side voltage regulation loop and the battery charger loop of an online UPS from a single device, thanks to its 8 PWM outputs that can split between full-bridge inverter switching and bidirectional charger switching. The dual analog comparators provide hardware-implemented over-current and battery cell-imbalance protection that does not depend on software timing. Functional Safety (Class B capable) features shorten IEC 62040 UPS safety certification, and the dual-partition Flash enables field updates without taking the UPS offline.
推薦
Industrial DC/DC Converter
The DSPIC33EP64GS805-I/PT drives isolated and non-isolated DC/DC topologies including buck, boost, half-bridge, full-bridge, and LLC resonant converters. Its high-resolution PWM with 8.32 ns edge placement is fine enough for digital current-mode control without analog slope compensation, and the on-chip PGA eliminates the external op-amp normally required for current-shunt amplification. Compared with the analog TL494, the GS805 reduces BOM by replacing the op-amp + comparator + PWM IC cluster with one DSC.
推薦
LED Lighting Drivers
In commercial and architectural LED drivers, the DSPIC33EP64GS805-I/PT executes constant-current control loops with smooth PWM dimming, while the on-chip comparators detect LED open and short faults in hardware within one switching cycle. The 70 MIPS throughput allows up to four independent LED channel loops from one IC, and the wide 3.0-3.6 V supply range supports both 12 V and 24 V lighting bus architectures. The industrial temperature rating ensures reliability in enclosed luminaire environments.
推薦
Battery Charger / Power Tool SMPS
The DSPIC33EP64GS805-I/PT controls Li-ion battery chargers and high-power cordless tool SMPS blocks by running CC/CV charge profiles with thermal fold-back. The PGA-driven current sensing directly interfaces to the shunt in the high-side path, and the CAN interface enables diagnostic reporting to a system master. The dual-partition Flash is especially useful for tool firmware where factory calibration or chemistry updates must be applied in the field without end-user tools.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP64GS805-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33EP64GS805T-I/PT | DSPIC33EP64GS805-E/PT | DSPIC33EP128GS805-I/PT | DSPIC33EP512GM604-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 128 KB | 512 KB |
| RAM | 8 KB | 8 KB | 8 KB | 16 KB | 48 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| ADC | 12-bit 12.5 Msps | 12-bit 12.5 Msps | 12-bit 12.5 Msps | 12-bit 12.5 Msps | 12-bit 12.5 Msps |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes |
| PWM Outputs | 8 channels | 8 channels | 8 channels | 8 channels | 8 channels |
| Functional Safety (FuSa) | Yes (Class B capable) | Yes (Class B capable) | Yes (Class B capable) | Yes (Class B capable) | Yes |
| Unit Price (qty 1000) | $3.48 | $3.48 | $3.65 | $4.10 | $6.20 |
主要差異化特點
- Integrated PGA eliminates external op-amps for current sensing (對比DSPIC33EP64GS502-I/PT)
- Dual-partition Flash for live firmware updates (對比DSPIC33EP64GS805-E/PT)
- CAN 2.0B + 8 PWM in 48-TQFP (對比DSPIC33EP512GM604-I/PT)
設計說明
Place one 100 nF X7R ceramic decoupling capacitor directly on each VDD pin pair, plus a single shared 10 µF X5R bulk capacitor within 5 mm of the IC. Tie AVDD and VDD to the same supply but isolate them with a ferrite bead or small resistor (10 Ω) to prevent digital switching noise from coupling into the ADC. The exposed thermal pad is not present on this 48-TQFP package - use a continuous unbroken ground plane on layer 2 and stitch it with 0.3 mm vias in a 1 mm grid to maximize heat dissipation and provide a low-impedance return path for high-di/dt PWM edges.
Route the ADC sense traces (current-shunt and voltage-sense) as a tight differential pair directly to the dedicated ANx/PGA pins, avoiding any layer changes. The PGA inputs have a finite common-mode range - if the shunt sits at the high-side of a half-bridge, bias the PGA inputs through a resistor network to keep them inside 0.3 V to AVDD-0.3 V across the full switching cycle. Keep the analog ground island unbroken and join it to the digital ground at a single point directly under pin 22 (AVSS).
When using the dual-partition Flash for live firmware updates, ensure the bootloader reserves a guard region above and below the active partition to prevent accidental over-write, and always validate the new image's CRC before swapping the pointer. Do not exceed 70 MIPS throughput with no wait states; use the Flash prefetch module (PMD/PFM) cache to avoid instruction-fetch stalls. The MCLR pin must be tied to VDD through a 10 kΩ resistor with a 100 nF cap to ground for clean power-on reset, even in production designs - floating MCLR is the most common cause of unexplained resets in fielded units.
合規資訊
RoHS and REACH compliance confirmed via Microchip product page. Not AEC-Q100 qualified - select a -Q1 suffix variant for automotive. Industrial temperature grade. Halogen-free status requires reference to Microchip's material declaration.
