DSPIC33FJ09GS302-I/MM - 16-bit 40 MIPS DSC | Microchip Technology
MPN: DSPIC33FJ09GS302-I/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.28 | $3.28 |
| 10 | $2.96 | $29.60 |
| 100 | $2.64 | $264.00 |
| 500 | $2.36 | $1,180.00 |
| 1,000 | $2.11 | $2,110.00 |
DSPIC33FJ09GS302-I/MM Overview
A digital signal controller combines the compute throughput of a digital signal processor with the peripheral set and ease of use of a microcontroller, sitting in the system hierarchy between a general-purpose MCU and a dedicated DSP. In digital power systems, the DSC executes the control loop that a discrete analog compensator would otherwise perform, enabling programmable, adaptive, and monitorable power conversion.
Key features include a high-speed PWM module with advanced mode support for multi-phase converters, an onboard ADC suited to current- and voltage-sense sampling, and analog comparators for fast cycle-by-cycle protection. These peripherals directly address multi-loop control topologies found in modern power stages.
Architecturally, the dsPIC33F core operates from a 3V to 3.6V supply and pairs a 16-bit modified Harvard datapath with DSP multiply-accumulate instructions, allowing single-cycle MAC operations in the control-loop inner loop. The flash-based program memory supports in-circuit self-programming, and the device is supported by Microchip development tools such as MPLAB X IDE and MPLAB ICD programmers.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), and lighting ballasts - all per the manufacturer's stated target markets for this family.
Designers should budget flash and RAM carefully: 9 KB of program space and 1 KB of RAM are sufficient for tightly coded control loops but leave little margin for protocol stacks, so keep code footprint lean.
This page adds value beyond the manufacturer datasheet by consolidating distributor pricing, drop-in family alternatives, application guidance, and design notes in one verifiable reference.
Drop-in alternatives for DSPIC33FJ09GS302-I/MM — 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 DSPIC33FJ09GS302-I/MM (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, Packaging, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ09GS302-E/MM
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33FJ06GS202-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33FJ06GS202AT-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ06GS202A-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.98 / Unit
View Datasheet →DSPIC33FJ06GS102AT-E/TL
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →DSPIC33FJ09GS302-I/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Maximum Execution Speed | 40 MIPS |
| Program Memory (Flash) | 9 KB (3K x 24) |
| Data RAM | 1 KB (1024 Bytes) |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (I grade) |
| Package | 28-QFN-S (6x6 mm) |
| Mounting Type | Surface Mount |
| Peripherals | High-Speed PWM, ADC, Comparators (SMPS features) |
| Target Applications | Digital SMPS, AC-DC, DC-DC, PFC, UPS |
| Instruction Word Size | 24-bit |
| Series | dsPIC33FJ09GS302 family |
| RoHS Status | Compliant |
| Qualification Temperature Grade Suffix | I (Industrial) |
| Country of Origin | Thailand |
DSPIC33FJ09GS302-I/MM 28-qfn-s (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ09GS302-I/MM (28-qfn-s (6x6 mm) 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 DSPIC33FJ09GS302-I/MM.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ09GS302-I/MM is suitable for 6 applications: Digital Switch-Mode Power Supplies (SMPS), AC-to-DC Converters, Power Factor Correction (PFC), Uninterruptible Power Supplies (UPS), DC-to-DC Converters, Embedded Industrial Control.
Digital Switch-Mode Power Supplies (SMPS)
The DSPIC33FJ09GS302-I/MM is purpose-built for digital SMPS control: its 40 MIPS dsPIC33F core closes voltage- and current-mode loops fast enough for hundreds-of-kHz switching frequencies, while the integrated high-speed PWM generates cycle-accurate duty commands and the on-chip comparators implement cycle-by-cycle overcurrent protection without external circuitry. In a typical topology, the ADC samples the output voltage and inductor current each switching period, the control law executes in the DSP multiply-accumulate pipeline, and the PWM module applies the new duty cycle - a fully digital loop replacing analog compensators. Compared with a general-purpose MCU, the GS family's deterministic interrupt latency and PWM granularity protect against sub-harmonic oscillation. Microchip states these devices support common multi-loop SMPS architectures directly.
Recommended
AC-to-DC Converters
For AC-to-DC conversion, the DSPIC33FJ09GS302-I/MM supervises the rectification and regulation stages with its ADC sampling the rectified bus and its PWM shaping the downstream conversion stage. Microchip's product page explicitly lists AC-to-DC converters among the target applications of this GS-family DSC. The 9 KB flash accommodates control-loop code plus housekeeping tasks such as brownout detection and startup sequencing, and the 1 KB RAM is sufficient for the state variables of a well-structured single- or dual-loop controller. Because the entire control law lives in software, output-voltage targets, soft-start profiles, and protection thresholds are programmable rather than fixed by analog component values, shortening design iteration cycles and enabling product families to share one PCB.
Recommended
Power Factor Correction (PFC)
Power factor correction demands a controller that samples input current and voltage every switching cycle and updates the boost-stage duty with minimal latency - exactly the profile of the DSPIC33FJ09GS302-I/MM at 40 MIPS. The high-speed PWM drives the PFC MOSFET with cycle-accurate resolution, the ADC captures the sinusoidal input envelope, and firmware enforces average-current-mode shaping for low THD. Microchip names PFC explicitly among this family's target digital power-conversion applications. Implementing PFC digitally also allows adaptive gain scheduling across universal-line (90-264 VAC) inputs and seamless mode transitions at light load, benefits that fixed analog PFC controllers cannot match. Designers should verify ADC sampling-to-PWM-update latency against the chosen switching frequency for loop stability.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS systems, the DSPIC33FJ09GS302-I/MM can control the inverter, charger, and transfer logic: the high-speed PWM generates the inverter switching pattern, the ADC monitors battery voltage, bus voltage, and output current, and the comparators provide fast fault response for overload events. Microchip lists UPS among the applications supported by this device family's SMPS feature set. The 9 KB flash stores the control laws plus transfer-sequencing state machines, while 40 MIPS leaves timing margin for sine-wave modulation at typical UPS switching frequencies. Digital implementation enables firmware-selectable output profiles (pure sine, stepped approximation), battery-chemistry-specific charge curves, and event logging - capabilities that differentiate modern UPS products and are impractical with fixed-function analog control ASICs.
Recommended
DC-to-DC Converters
The DSPIC33FJ09GS302-I/MM suits multi-rail DC-to-DC converters where several buck or boost outputs must be coordinated: multi-loop control is a documented strength of this GS-family device. The high-speed PWM module can phase-shift or interleave multiple outputs to cancel input ripple, while the ADC sequences channel sampling across rails each switching period. At 40 MIPS, the core can service two or three moderate-frequency loops plus supervisory tasks from 9 KB of flash. Digital control brings programmable sequencing, output-voltage trimming, and fault-retry behavior, which simplifies compliance with modern point-of-load power specifications. Compared with dedicated digital-PWM ICs, this DSC adds full firmware flexibility at the cost of higher quiescent complexity, so it best fits converters needing customization rather than fixed-function rails.
Recommended
Embedded Industrial Control
Beyond pure power conversion, the DSPIC33FJ09GS302-I/MM serves general embedded industrial control where motor-adjacent or power electronics reside: the 16-bit dsPIC33F core with DSP instructions handles filtering and control math, 40 MIPS provides real-time responsiveness, and the I-grade -40C to +85C rating covers industrial environments. The QFN-28 (6x6 mm) footprint keeps PCB area small for distributed control nodes, sensor front ends, and actuator drivers. Flash self-programming enables field firmware updates over a service interface, and support for MPLAB X IDE and XC16 tooling shortens development. For designs needing more memory or communication peripherals (CAN, larger flash), Microchip's dsPIC33EV family offers upgrade paths while retaining familiar tooling, making the GS302 a solid entry point to the dsPIC33 ecosystem.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ09GS302-I/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ09GS302-E/MM | DSPIC33FJ06GS202-I/MM | DSPIC33FJ06GS202AT-I/MM |
|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 9 KB (3K x 24) | 9 KB (3K x 24) | 6 KB | 6 KB |
| Maximum Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Digital Power Features | High-Speed PWM, ADC, Comparators (SMPS) | Same GS-family SMPS feature set | GS-family SMPS feature set | GS-family SMPS feature set (A-step silicon) |
| Lifecycle Status | Active | Active | Active | Active |
Key Differentiators
- 9 KB flash, 50% more program space than 6 KB family siblings (vs DSPIC33FJ06GS202-I/MM)
- SMPS-optimized peripheral set as standard (vs DSPIC33FJ09GS302-E/MM)
- Compact 6x6 mm QFN footprint for dense power boards (vs DSPIC33FJ09GS302-I/SO)
Design Notes
The DSPIC33FJ09GS302-I/MM operates from a 3.0V to 3.6V supply. In digital power designs the controller usually sits on the secondary-side bias rail, so generate its 3.3V supply with a dedicated small LDO or bias winding isolated from the noisy primary power stage. Place a 0.1uF ceramic decoupling capacitor at each VDD/VSS pin pair plus a bulk 4.7uF-10uF capacitor nearby, per the decoupling guidance in the Microchip family data sheet. Estimated: a 40 MIPS dsPIC33F core draws on the order of tens of milliamps - budget the bias rail accordingly.
The 28-QFN-S (6x6 mm) package includes an exposed pad that must be soldered to a grounded copper pour on the PCB - this pad is essential for both ground integrity and thermal dissipation. Use a via array under the exposed pad connecting to internal ground planes. Keep the high-speed PWM routing away from the ADC sense lines; route current-sense signals as short differential pairs directly to the ADC pins, and place the RC anti-aliasing filter close to the pin. Follow the minimal pin-connection checklist in the DS-75018B data sheet during first bring-up.
Flash is only 9 KB and RAM only 1 KB - write control-loop code tightly and verify code size after the first compiler build before committing to the smallest family member. When substituting a 06GS202 family part, remember program memory shrinks by 33% and peripheral registers can differ between silicon revisions; recompile and re-verify rather than reusing binaries. Migrating firmware between A-step and non-A silicon requires checking the errata documents Microchip publishes for each revision of the GS family.
Compliance Information
RoHS compliance stated in JLCPCB distributor listing for dsPIC33FJ09GS302-I/MM. Other compliance statuses not stated in provided data.
