dsPIC33EP64GS505-E/PT - 16-bit 70 MIPS DSC 64KB Flash | Microchip
MPN： DSPIC33EP64GS505-E/PT ✓ 啟用中DSPIC33EP64GS505-E/PT 概覽
A digital signal controller combines the compute throughput of a digital signal processor (DSP) with the peripheral integration and deterministic control of a microcontroller (MCU). Within the power-management hierarchy, DSCs sit at the heart of digital switch-mode power supplies (SMPS), replacing analog control loops with firmware-based control for higher flexibility, programmability, and telemetry. The dsPIC33EP family occupies the 16-bit embedded control segment between general-purpose MCUs and 32-bit application processors.
Key features of the GS50x family include an interconnected high-speed PWM module purpose-built for power conversion, high-speed analog-to-digital converters, on-chip digital-to-analog converters (DAC), programmable gain amplifiers (PGA), and analog comparators that close control loops without external components. According to Microchip, the dsPIC33EPXXGS50X family is explicitly targeted at digital power applications.
Architecturally, the device uses the enhanced dsPIC33E core with DSP instruction support, allowing single-cycle MAC operations used in proportional-integral-derivative (PID) and compensator routines. The interconnected PWM, ADC, and comparator fabric enables loop latencies measured in nanoseconds, critical for peak-current-mode and multi-loop converters.
Typical applications include AC-DC converters, power factor correction (PFC) stages, DC-DC converters, uninterruptible power supplies, solar micro-inverters, and lighting ballasts. The extended -40C to +125C operating range of the E-grade part suits industrial and automotive-adjacent environments.
Design consideration: budget ADC sampling and PWM update timing so the control loop executes within one switching period; use the family reference design (Interleaved PFC, 350W) as a validated starting point.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33EP64GS505-E/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： DSPIC33EP64GS505-E/PT （相同外形與佔位） — 差異在於 Package, Operating Temperature, ADC, Functional Safety, PWM.
DSPIC33EP64GS505-I/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128GS505-E/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128GS505-I/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP64GS505-E/PT 最大額定值與電氣特性
| Core | dsPIC33E 16-bit DSC |
| Max CPU Speed | 70 MIPS |
| Program Memory (Flash) | 64 KB |
| 封裝 | 48-TQFP (7x7 mm) with exposed pad |
| 工作溫度 | -40C to +125C (E grade, extended) |
| 安裝類型 | Surface Mount |
| Application Focus | Digital Power SMPS, High Speed ADC, DAC |
| PWM | Interconnected High-Speed PWM |
| ADC | High-Speed ADC with PGA |
| DAC | On-chip DAC |
| Comparators | Analog comparators (interconnected) |
| Status | In Production |
| 安裝方式 | SMD/SMT |
| Factory Lead Time | 17 weeks (per distributor data) |
DSPIC33EP64GS505-E/PT 48-tqfp (7x7 mm) with exposed pad 腳位配置指南
DSPIC33EP64GS505-E/PT（48-tqfp (7x7 mm) with exposed pad 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： DSPIC33EP64GS505-E/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33EP64GS505-E/PT 適用於 6 應用s: AC-DC Power Supplies, Power Factor Correction (PFC), DC-DC Converters, Solar Micro-Inverters and Renewable Energy, Digital Lighting and Electronic Ballasts, Uninterruptible Power Supplies (UPS).
AC-DC Power Supplies
The dsPIC33EP64GS505 is explicitly designed by Microchip for digital switch-mode power supplies, including AC-DC converters. Its interconnected high-speed PWM generates phase-shifted or complementary drive signals with nanosecond resolution, while the high-speed ADC samples input and output rails fast enough to close voltage and current loops within a single switching period. The on-chip comparators provide cycle-by-cycle current limiting in hardware, protecting the converter even if firmware stalls. Using this DSC replaces multiple analog control ICs with one programmable device, enabling firmware-updatable regulation, digital telemetry, and adaptive control across universal input ranges. The extended -40C to +125C E-grade temperature rating suits enclosed adapter and industrial PSU environments with limited airflow.
推薦
Power Factor Correction (PFC)
Microchip ships a dedicated Interleaved Power Factor Correction reference design built on the dsPIC33EP GS-series that produces up to 350W from universal AC input, validating this DSC for PFC stages. The 70 MIPS dsPIC33E core executes average-current-mode PFC compensators at switching frequency, while the high-speed ADC simultaneously samples inductor current, bus voltage, and AC line waveform. The interconnected PWM drives two interleaved boost phases with precise phase offset, reducing input ripple current and simplifying EMI filtering. Firmware-based control allows valley switching, adaptive frequency, and brown-out handling that analog PFC controllers cannot easily match, making the 64GS505 a strong choice for front-end PFC in server, telecom, and industrial power systems.
推薦
DC-DC Converters
For synchronous buck, boost, and buck-boost converters, the dsPIC33EP64GS505 provides the deterministic loop timing digital DC-DC control demands. The high-speed PWM module supports complementary outputs with programmable dead time and duty resolution fine enough for high-frequency conversion, and the on-chip comparators implement hardware overcurrent trip that shuts down PWM outputs within one switching cycle. The high-speed ADC with programmable gain amplifier directly interfaces low-voltage current-shunt signals without external op-amps, reducing BOM count. Peak-current-mode, voltage-mode, and multi-loop control schemes all fit in the 64KB Flash firmware budget, and the exposed-pad TQFP aids thermal dissipation in dense power stages operating at elevated ambient temperatures.
推薦
Solar Micro-Inverters and Renewable Energy
Solar micro-inverter and MPPT applications benefit from the dsPIC33EP64GS505's combination of DSP throughput and power peripherals. The 70 MIPS core with single-cycle MAC executes maximum power point tracking algorithms and grid-synchronization routines while the high-speed PWM drives the power stage and the ADC monitors panel voltage, current, and grid conditions. Digital control enables per-panel MPPT optimization and firmware-field-updatable grid codes, a key advantage over fixed analog solutions. The extended -40C to +125C operating range of the E-grade part accommodates rooftop junction boxes exposed to direct sunlight. Designers should budget Flash carefully in 64KB, or select the same-package 128KB GS505 variant for complex grid-tie firmware with communications stacks.
推薦
Digital Lighting and Electronic Ballasts
High-intensity and specialty lighting ballasts require precise lamp-current regulation, ignition sequencing, and fault protection, all of which the dsPIC33EP64GS505 delivers in firmware. The interconnected high-speed PWM generates resonant-half-bridge drive with adjustable dead time, the ADC samples lamp voltage and current for closed-loop power control, and hardware comparators catch open-lamp or short-circuit faults within a cycle. Digital dimming profiles and communication (DALI-style) protocols fit within the 64KB Flash, replacing dedicated ballast ASICs with a single programmable controller. The 48-TQFP exposed-pad package with extended temperature rating withstands the elevated ambient temperatures typical of enclosed luminaire drivers, supporting long product lifetimes in industrial and commercial installations.
推薦
Uninterruptible Power Supplies (UPS)
Line-interactive and online UPS topologies demand simultaneous control of rectifier, inverter, and transfer stages - a workload the dsPIC33EP64GS505 handles with its 70 MIPS DSP core and multi-channel high-speed ADC. Interconnected PWM modules drive the inverter bridge with sinusoidal modulation while firmware supervises battery charging profiles, line synchronization, and transfer logic. On-chip comparators provide hardware-level protection against output overcurrent and DC bus overvoltage independent of software latency. The extended -40C to +125C E-grade temperature rating supports UPS cabinets in unconditioned industrial sites. With 64KB Flash, full single-phase UPS control including compensation, sequencing, and host communications is achievable, and the same-footprint 128KB variant provides headroom for multi-mode firmware.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP64GS505-E/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 | DSPIC33EP64GS505-I/PT | DSPIC33EP128GS505-E/PT | DSPIC33EP128GS505-I/PT |
|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) EP | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB | 128 KB | 128 KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Digital Power Peripherals | High-speed PWM, HS ADC + PGA, DAC, comparators | Identical peripheral set | Identical peripheral set | Identical peripheral set |
| Target Application | Digital Power SMPS, AC-DC, PFC | Digital Power SMPS (industrial ambient) | Digital Power SMPS with larger firmware | Digital Power SMPS, cost-optimized |
| Lifecycle Status | In Production (active) | In Production | In Production | In Production |
主要差異化特點
- Extended temperature rating for harsh environments (對比DSPIC33EP64GS505-I/PT)
- Purpose-built digital power peripheral interconnect (對比DSPIC33FJ32MC204-I/PT)
- Balanced 64KB Flash cost point (對比DSPIC33EP128GS505-E/PT)
設計說明
Confirm the temperature grade before substitution: the E in DSPIC33EP64GS505-E/PT denotes -40C to +125C extended range, while the I-grade variant is limited to -40C to +85C. Swapping in the cheaper I-grade for an extended-temperature design is a common sourcing error that surfaces only in field failures. Similarly, the /PT suffix specifies the 48-pin TQFP; ordering /MR (QFN) parts will not fit the same land pattern. Always cross-check the full ordering code, not just the core number.
The /PT package is a 48-TQFP with exposed pad (7x7 mm). Solder the exposed pad to a grounded copper pour to improve thermal dissipation and reduce noise on the analog front end - the high-speed ADC and PGA performance depends on a clean analog ground. Separate power-stage returns from the DSC analog ground and join them at a single star point. Keep PWM gate-drive traces short and route ADC sense lines away from switching nodes to preserve the converter's control-loop accuracy.
Plan firmware Flash consumption early: the GS505 provides 64KB of program memory, and full digital-power control (compensators, protection state machines, telemetry, and any communication protocol) can approach that limit. If your control scheme includes grid codes or a comms stack, evaluate the same-package DSPIC33EP128GS505-E/PT (128KB Flash) from the start - it is pin-compatible and costs marginally more, avoiding a mid-project BOM change. Use Microchip's 350W Interleaved PFC reference design as a firmware baseline to reduce integration risk.
合規資訊
Exact RoHS/REACH/lead-free certificate values were not present in the verified web data captured for this page. Microchip lists the part status as In Production; verify compliance declarations on the official Microchip product page or request a certificate of conformance from the distributor.
