DSPIC33FJ09GS302T-I/SS - 16-bit 40 MIPS DSC 9KB Flash | Microchip
MPN： DSPIC33FJ09GS302T-I/SS ✓ 啟用中DSPIC33FJ09GS302T-I/SS 概覽
A digital signal controller combines the deterministic control flow of a microcontroller with the mathematical throughput of a DSP core. Within the power-management hierarchy, DSCs sit above basic MCUs in switching power applications because peripherals such as high-speed PWM, fast ADCs and analog comparators are tightly coupled to the dsPIC33F RISC core, enabling closed-loop control of switch-mode power supplies at switching frequencies well above what a general-purpose MCU can service.
Key differentiating features include a dsPIC33F core executing up to 40 MIPS at 3.3V, dedicated SMPS peripherals (High-Speed PWM with advanced timing, high-speed 10-bit ADC, and analog comparators), and the T designator indicating tape-and-reel packaging for automated assembly. The 9 KB Flash supports field reprogramming, while the 1 KB RAM handles control-loop state variables and PI/PID compensator data for multi-loop SMPS topologies.
Architecturally, the dsPIC33FJ09GS302 belongs to Microchip's GS-series SMPS family (documented in the dsPIC33FJ06GS001/101A/102A/202A and dsPIC33FJ09GS302 data sheet family), which was purpose-built for digital power conversion. The High-Speed PWM module supports complementary outputs, dead-time insertion and fault shutdown - the exact feature set required for half-bridge, full-bridge, flyback and PFC stages.
Typical applications include AC-to-DC converters, DC-to-DC converters, Power Factor Correction (PFC) stages, uninterruptible power supplies (UPS), and LED drivers, where deterministic interrupt latency and integrated analog reduce external component count.
Design consideration: budget the 1 KB SRAM carefully - allocate control-loop coefficients in static storage and avoid dynamic allocation to keep worst-case loop timing deterministic at 40 MIPS.
This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-26.
直接替換替代品，適用於 DSPIC33FJ09GS302T-I/SS — 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： DSPIC33FJ09GS302T-I/SS （相同外形與佔位） — 差異在於 Package, Packaging, Operating Temperature, Mounting Type, RoHS Status.
DSPIC33FJ09GS302T-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ06GS101AT-I/SS
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ06GS202-I/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33FJ06GS202AT-I/TL
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ06GS101-E/P
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ09GS302T-I/SS 最大額定值與電氣特性
| Core Architecture | 16-bit dsPIC33F RISC with DSP engine |
| Maximum CPU Speed | 40 MIPS |
| Flash Program Memory | 9 KB |
| SRAM | 1024 Bytes |
| 供應電壓 | 3.3 V |
| 工作溫度 | -40C to +85C (I grade) |
| 封裝 | 28-pin SSOP (SS) |
| 安裝類型 | Surface Mount |
| Peripherals | High-Speed PWM, ADC, Comparators (SMPS feature set) |
| Target Application Class | Digital Switch-Mode Power Supply (SMPS) |
| Packaging | Tape and Reel (T designator) |
| Data Sheet Family | dsPIC33FJ06GS001/101A/102A/202A and dsPIC33FJ09GS302 |
| Product Type | Digital Signal Controller (DSC) / 16-bit MCU |
| RoHS 狀態 | Compliant |
| Lead Free | Yes |
DSPIC33FJ09GS302T-I/SS 28-pin ssop (ss) 腳位配置指南
DSPIC33FJ09GS302T-I/SS（28-pin ssop (ss) 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： DSPIC33FJ09GS302T-I/SS.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33FJ09GS302T-I/SS 適用於 6 應用s: AC-to-DC Converter Control, DC-to-DC Converter (Digital Power), Power Factor Correction (PFC), Uninterruptible Power Supply (UPS), LED Driver and Lighting Power, Industrial Power and Battery Charging.
AC-to-DC Converter Control
The DSPIC33FJ09GS302T-I/SS controls offline AC-to-DC converter stages where its 40 MIPS core executes current- and voltage-loop compensators every switching cycle. The High-Speed PWM module generates complementary gate drive with programmable dead time, while the integrated ADC samples the output bus and inductor current with cycle-by-cycle resolution. Microchip explicitly lists AC-to-DC conversion among the target applications of this GS-family device. Using an on-chip comparator for fast overcurrent shutdown removes an external protection IC, reducing BOM cost. Placed between the rectified bus and the power stage gate drivers, the controller achieves deterministic loop timing that analog-only designs cannot match in programmability, at the trade-off of requiring firmware development and code-space management within the 9 KB Flash budget.
推薦
DC-to-DC Converter (Digital Power)
For isolated and non-isolated DC-to-DC converters - flyback, forward, half-bridge and LLC topologies - the DSPIC33FJ09GS302T-I/SS provides the closed-loop digital control core. Its SMPS-oriented peripheral set (High-Speed PWM with phase-shift capability, fast ADC triggers synchronized to PWM events, and analog comparators) is documented in Microchip data sheet DS-75018B as purpose-built for switch-mode power conversion. A typical implementation clocks the ADC at the PWM frequency so each cycle's duty update reflects the latest sampled current, enabling peak or average current-mode control in firmware. The 3.3V supply simplifies interfacing with logic-level gate drivers. Designers should reserve a portion of the 9 KB Flash for firmware field updates, since digital converters often need tuning updates in production.
推薦
Power Factor Correction (PFC)
The DSPIC33FJ09GS302T-I/SS is a natural fit for boost-PFC stages, and Microchip backs this use case with an Interleaved PFC reference design based on the SMPS dsPIC family that delivers up to 350W from a universal AC input. The controller's High-Speed PWM supports the interleaved phase relationships needed to cancel input ripple current, while cycle-by-cycle ADC sampling tracks inductor current for average-current-mode PFC control at 40 MIPS - ample throughput for both the current inner loop and the voltage outer loop in one device. On-chip comparators provide hardware-level overcurrent protection with microsecond response, independent of firmware latency. The 9 KB Flash accommodates both control algorithms and housekeeping code such as inrush management and brownout handling.
推薦
Uninterruptible Power Supply (UPS)
In UPS designs the DSPIC33FJ09GS302T-I/SS manages the inverter, charger and transfer logic within one controller, a combination Microchip names directly among this family's target applications. The High-Speed PWM generates the sine-modulated inverter gating, the ADC samples battery voltage, bus voltage and output current, and the comparators implement fast fault thresholds. The 40 MIPS DSP engine executes the sine-reference lookup and PI loops with headroom, and the 9 KB Flash holds state machines for line/battery/backup mode transitions. Because the industrial temperature grade covers -40C to +85C, the controller suits both indoor server UPS and outdoor telecom power cabinets. Designers should map the 1 KB RAM statically, allocating control variables to deterministic addresses for predictable interrupt latency.
推薦
LED Driver and Lighting Power
Digitally controlled LED drivers benefit from the DSPIC33FJ09GS302T-I/SS's ability to run constant-current loops with PWM dimming in a single chip. The High-Speed PWM module produces the main switching converter drive, while a second PWM channel can generate dimming waveforms with precise resolution at 40 MIPS time base. The ADC samples LED current each cycle for tight regulation despite forward-voltage drift with temperature, and the industrial temperature range supports enclosed luminaires and street-lighting cabinets reaching high ambients. Using one digital controller for both power conversion and dimming communication parsing (within the 9 KB Flash) eliminates a separate MCU, cutting system cost. The trade-off is firmware complexity versus a simpler analog dimming approach, justified in tunable or networked lighting products.
推薦
Industrial Power and Battery Charging
Industrial battery chargers and distributed power shelves use the DSPIC33FJ09GS302T-I/SS for multi-stage charging control (CC/CV/trickle) with digital supervision. The GS-family SMPS peripherals handle the power-conversion loop, while spare CPU bandwidth at 40 MIPS runs charge-state logic, fault logging and status signaling. The -40C to +85C industrial rating and 3.3V logic suit factory-floor environments, and Microchip's E-temperature alternative covers hotter enclosures. The on-chip comparators enforce hardware charge-current limits independent of firmware, protecting battery cells during software faults. Developers working within the 1 KB SRAM should define fixed-size control structures at build time. For charger products requiring CAN or larger protocol stacks, the pin-related dsPIC33EV family offers migration with more memory.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33FJ09GS302T-I/SS — 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 | DSPIC33FJ09GS302T-E/SS | DSPIC33FJ06GS101AT-I/SS | DSPIC33FJ06GS202-I/SS | DSPIC33FJ06GS202AT-I/TL |
|---|---|---|---|---|---|
| Package | 28-SSOP (SS) | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP (TL code) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 9 KB | 9 KB | 6 KB | 6 KB | 6 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS class (GS family) | 40 MIPS class (GS family) | 40 MIPS class (GS family) |
| Temperature Grade | -40C to +85C (Industrial, I) | Extended (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| SMPS Peripherals (High-Speed PWM, ADC, Comparators) | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
主要差異化特點
- Largest Flash in the 28-SSOP GS SMPS family (對比DSPIC33FJ06GS202-I/SS)
- Same die available in extended temperature grade (對比DSPIC33FJ09GS302T-E/SS)
- SMPS-optimized peripheral integration (對比Generic 16-bit MCUs (non-digital-power families))
設計說明
Decouple the 3.3V supply with at least one 0.1 uF ceramic capacitor placed within 5 mm of each VDD/VSS pin pair, plus a 4.7-10 uF bulk capacitor near the controller. In SMPS layouts the dsPIC33F shares its ground domain with high di/dt power-stage currents; use a single-point star or solid ground plane and keep the PWM output traces short to minimize gate-driver ring-back. Estimated: gate-drive trace inductance of 10 nH with 1 A/ns switching edge induces ~10 V of ringing - route PWM and analog sense lines away from switch nodes.
The 9 KB Flash and 1 KB SRAM fill quickly once ISR-based control loops plus communications are added. Enable the compiler map file early and set a firmware budget (e.g., 80% Flash maximum) before feature freeze. Avoid dynamic memory allocation - reserve control coefficients statically so the worst-case interrupt latency at 40 MIPS stays deterministic for cycle-by-cycle ADC sampling. Also verify ADC sample triggers are synchronized to PWM events rather than free-running, per Microchip's SMPS family application guidance in DS-75018B.
Estimated: the 28-SSOP package in a GS-family dsPIC33F at 40 MIPS typically dissipates well under 0.5 W, so junction temperature rise above a 70C ambient stays modest with a standard multilayer PCB. However, industrial enclosures for PFC and UPS products routinely reach +85C ambient, which is the top of the -I grade rating. If your enclosure exceeds this, plan the drop-in migration to the DSPIC33FJ09GS302T-E/SS extended-temperature variant now - the identical 28-SSOP footprint makes this a zero-PCB-change decision.
Keep analog sense inputs (current shunt, output voltage divider) on a quiet island separated from PWM and switch-node copper, and filter ADC inputs with small RC networks (estimated 100 ohm to 1 kohm with 1 nF) sized against your sampling rate. Route the comparator overcurrent input directly to the shunt with Kelvin connection so hardware fault thresholds are accurate regardless of ground bounce in the power stage.
合規資訊
RoHS compliance and lead-free status consistent with current Microchip catalog packaging; formal REACH/halogen/conflict-minerals declarations should be requested from Microchip.
