DSPIC33FJ09GS302T-I/TL - 16-bit DSC 40 MIPS 9KB Flash | Microchip
MPN: DSPIC33FJ09GS302T-I/TL ✓ Active| Qty | Unit Price | Extended |
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DSPIC33FJ09GS302T-I/TL Overview
A digital signal controller combines the architecture of a 16-bit microcontroller with the computational capability of a DSP, adding a DSP engine, barrel shifter, and hardware multiply-accumulate units to standard MCU peripherals. Within the power-management hierarchy, DSCs sit between general-purpose MCUs and dedicated power-control ASICs, providing the programmability needed for multi-loop control algorithms in switch-mode power supplies.
The dsPIC33FJ09GS302 is purpose-built for digital power conversion: it integrates a high-speed PWM module with sub-nanosecond-scale resolution control, an 8-channel 10-bit ADC, 2x10-bit DAC outputs, comparators, and communication interfaces including I2C, SPI, and UART. The 40 MIPS core executes digital control loops fast enough for current-mode SMPS designs.
Microchip designed the GS series specifically to support common multi-loop digital switch-mode power supply (SMPS) topologies, with peripherals that can trigger ADC sampling synchronized to PWM events, minimizing control-loop latency. The CMOS process and fixed-point architecture with boundary-scan support ease both design and production test.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), and digital lighting and battery-charger power stages. The interleaved PFC reference design from Microchip produces up to 350W from universal input using this device family.
Design consideration: at 3.3V-only operation, verify level compatibility with gate-driver and feedback circuitry, and review the Microchip errata sheet for the device before finalizing silicon-dependent timing assumptions.
This page synthesizes distributor availability, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ09GS302T-I/TL — 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 DSPIC33FJ09GS302T-I/TL (same form factor and footprint) — differing in Package, Packaging, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ09GS302-I/TL
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View Datasheet →DSPIC33FJ09GS302T-E/TL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ09GS302T-I/TL Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC with DSP engine |
| Maximum CPU Speed | 40 MIPS |
| Program Memory (Flash) | 9 KB (3K x 24) |
| RAM | 1024 Bytes |
| Supply Voltage | 3.3 V |
| ADC Resolution | 10-bit, 8 channels |
| DAC | 2 x 10-bit |
| PWM | High-Speed PWM module |
| Communication Interfaces | I2C, SPI, UART |
| Comparators | On-chip comparators |
| Package | 36-Pin VTLA EP |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel (T/R) |
| Technology | CMOS |
| Grade | AEC-Q100 and TS 16949 compliant family |
| Target Applications | SMPS / Digital Power Conversion |
DSPIC33FJ09GS302T-I/TL 36-pin vtla ep Pin Configuration Guide
Pin configuration for DSPIC33FJ09GS302T-I/TL (36-pin vtla ep 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 DSPIC33FJ09GS302T-I/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ09GS302T-I/TL is suitable for 6 applications: AC-to-DC Converter Control, DC-to-DC Converter, Power Factor Correction (PFC), Uninterruptible Power Supply (UPS), Digital Battery Chargers, Embedded Digital Power Telemetry.
AC-to-DC Converter Control
The DSPIC33FJ09GS302T-I/TL serves as the digital control core in offline AC-to-DC converters, where its 40 MIPS dsPIC33F core closes voltage and current loops in software. The high-speed PWM module generates precisely timed gate-drive signals while the 8-channel 10-bit ADC samples the output rail and input current synchronized to PWM events, reducing control-loop latency versus free-running sampling. On-chip comparators provide hardware overcurrent protection faster than any firmware path. Running the control law in firmware allows soft-start profiles, feedforward compensation, and adaptive gain scheduling that fixed analog controllers cannot offer, all within a 3.3V, 9 KB flash, 1024-byte RAM resource envelope in the compact 36-pin VTLA EP package.
Recommended
DC-to-DC Converter
In isolated and non-isolated DC-to-DC converters, the DSPIC33FJ09GS302T-I/TL replaces analog PWM controllers with a fully programmable digital loop. The high-speed PWM supports the phase-shifted and synchronous topologies common in telecom and server power, while the 10-bit ADC with programmable trigger points samples inductor current at the optimal instant of each switching period. The two 10-bit DACs establish programmable reference thresholds for the on-chip comparators, implementing cycle-by-cycle current limiting without firmware jitter. Firmware-based compensation enables runtime tuning of loop dynamics across load ranges, and I2C/SPI/UART interfaces report telemetry to a host, adding digital-power bus management to the 40 MIPS controller.
Recommended
Power Factor Correction (PFC)
The DSPIC33FJ09GS302T-I/TL is directly supported by a Microchip Interleaved PFC reference design producing a high-voltage DC output up to 350W from universal AC input, confirming its fit for boost-PFC stages. The 40 MIPS DSP core executes average-current-mode PFC algorithms with input-voltage feedforward, while the high-speed PWM drives interleaved phases that reduce input ripple current and EMI filter size. The fast 10-bit ADC tracks sinusoidal current shaping at switching frequency, and the comparators enforce cycle-by-cycle inrush and overcurrent limits in hardware. Digital implementation adapts compensation across the universal input range, maintaining high power factor and low THD that fixed analog PFC controllers cannot re-tune in the field.
Recommended
Uninterruptible Power Supply (UPS)
Online and line-interactive UPS systems use the DSPIC33FJ09GS302T-I/TL to coordinate inverter, charger, and transfer-switch control from one 40 MIPS device. The high-speed PWM synthesizes the inverter output waveform while the multi-channel 10-bit ADC simultaneously monitors battery voltage, battery current, output voltage, and AC-line zero crossings. The on-chip comparators implement hardware fault detection for fast inverter shutdown, and the UART or SPI interface provides communication to UPS-management circuitry. Firmware-based control enables seamless mode transitions between line, battery, and bypass operation, with the 9 KB flash program space accommodating state machines, waveform generation, and battery-charging profiles within the compact 36-pin VTLA EP footprint.
Recommended
Digital Battery Chargers
Smart battery chargers benefit from the DSPIC33FJ09GS302T-I/TL's combination of programmable charging profiles and precision power control. The 40 MIPS core implements CC/CV charging curves, termination detection, and temperature-derated profiles in firmware, while the high-speed PWM regulates the charging power stage at fixed frequency with programmable duty limits. The 10-bit ADC captures battery voltage and current with PWM-synchronized sampling that avoids switching noise corrupting measurements, and the 10-bit DACs plus comparators set independent overvoltage and overcurrent trip thresholds in hardware. Communication interfaces allow the charger to report state-of-charge data over I2C or UART to a battery-management host, all at 3.3V logic.
Recommended
Embedded Digital Power Telemetry
Beyond closed-loop control, the DSPIC33FJ09GS302T-I/TL acts as a digital-power telemetry node in servers and industrial power shelves. Running at 40 MIPS, it digitizes rail voltage, current, and temperature via the 8-channel 10-bit ADC, computes derived quantities such as power and efficiency in its DSP engine, and streams the data over I2C, SPI, or UART to a BMC or host controller. The remaining PWM and comparator resources continue to enforce local protection limits, so the same device provides both monitoring and autonomous safety action if the host link fails. Its small 36-pin VTLA EP package and 3.3V single-supply operation simplify integration onto dense power boards.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ09GS302T-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ09GS302-I/TL | DSPIC33FJ09GS302T-E/TL | DSPIC33FJ09GS302T-E/SS |
|---|---|---|---|---|
| Package | 36-Pin VTLA EP | 36-Pin VTLA EP - same | 36-Pin VTLA EP - same | 28-Lead SSOP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 9 KB (3K x 24) | 9 KB (3K x 24) | 9 KB (3K x 24) | 9 KB (3K x 24) |
| RAM | 1024 Bytes | 1024 Bytes | 1024 Bytes | 1024 Bytes |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Temperature Grade | Industrial (I) | Industrial (I) | Extended (E) | Extended (E) |
| Packaging | Tape and Reel | Tube/Tray | Tape and Reel | Tape and Reel |
Key Differentiators
- SMPS-optimized peripheral set (vs Generic 16-bit MCUs)
- Same-silicon packaging flexibility (vs DSPIC33FJ09GS302T-E/SS)
- Extended-temperature drop-in option (vs DSPIC33FJ09GS302T-E/TL)
Design Notes
Microchip states that an errata sheet describing minor operational differences from the data sheet with recommended workarounds may exist for current devices. Before locking timing-critical code, download the latest errata for the dsPIC33FJ09GS302 from the Microchip product page and audit any peripheral erratum affecting your PWM or ADC usage. Do not assume datasheet document 75018c behavior is errata-free on first silicon.
The 36-pin VTLA EP is a very-thin leadless package with an exposed pad. Solder the exposed thermal pad to a grounded copper pour with an array of thermal vias - this anchors the die and improves heat spreading for the SMPS power stage control circuitry. Follow the mechanical drawing in datasheet 75018c for exact land-pattern geometry; the underside pads make rework difficult, so inspect paste stencil design before first production run.
The device operates from a 3.3V supply. Ensure the analog supply feeding the 10-bit ADC is filtered separately from the noisy digital rail, and synchronize ADC sampling to PWM events using the ADC trigger features rather than free-running sampling, to keep switching noise out of current-loop measurements. Verify the exact supply-voltage range and absolute maximum ratings in the datasheet electrical characteristics chapter before powering gate-driver circuitry from the same rail.
Compliance Information
Distributor technical description (Microchip USA) states the dsPIC33FJ09GS302 family is AEC-Q100 and TS 16949 compliant. RoHS/REACH/lead-free status not stated in provided data - verify on the official Microchip product page.
