DSPIC33FJ09GS302-E/TL - 40 MIPS SMPS DSC 9KB Flash | Microchip
MPN: DSPIC33FJ09GS302-E/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.22 | $4.22 |
| 10 | $3.9 | $39.00 |
| 100 | $3.45 | $345.00 |
| 500 | $3.1 | $1,550.00 |
| 1,000 | $2.85 | $2,850.00 |
DSPIC33FJ09GS302-E/TL Overview
A Digital Signal Controller combines the computational throughput of a digital signal processor (DSP) with the peripheral integration and deterministic control of a microcontroller (MCU). In the power-management hierarchy, a DSC sits above a basic PWM timer IC: it closes multi-loop feedback digitally, replacing analog error amplifiers with firmware and an on-chip ADC. Microchip's dsPIC33FJ GS family was purpose-built for this role, pairing a 16-bit dsPIC RISC core with high-speed PWM, analog comparators, and fast ADC sampling.
Key features include a 40 MIPS dsPIC core at 3.3 V, an 8-channel 10-bit ADC for voltage and current feedback, two 10-bit DACs for reference generation, multiple high-speed PWM outputs for phase-shifted and interleaved topologies, analog comparators, and standard interfaces (I2C, SPI, UART). Remappable RPn pins allow flexible peripheral routing, simplifying PCB layout in dense converter designs.
Architecturally, the GS family integrates the PWM, ADC, and comparator blocks with tight inter-module triggers so current-mode loops can sample and correct within a single switching cycle. Hardware DSP multiply-accumulate instructions handle compensator math without stealing CPU cycles from the control loop, and the -E/TL grade carries an extended -40C to +125C operating range suitable for enclosed power supplies.
Typical applications are AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, and uninterruptible power supplies (UPS). Microchip's interleaved PFC reference design demonstrates the family driving a universal-input, 350 W single high-voltage DC output.
Design consideration: budget flash carefully - 9 KB is ample for a PFC or LLC compensator but not for bootloader-plus-protocol-stack combinations, so plan a clean partitioning of firmware modules.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ09GS302-E/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 DSPIC33FJ09GS302-E/TL (same form factor and footprint) — differing in DAC, Operating Temperature, Package, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ09GS302-I/TL
✅ Drop-In✓ In Stock
$3.02 / Unit
View Datasheet →DSPIC33FJ09GS302-E/TL Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit RISC |
| Max CPU Speed | 40 MIPS |
| Program Memory (Flash) | 9 KB (3K x 24) |
| RAM | 1 KB (1024 bytes) |
| Supply Voltage | 3.3 V |
| ADC | 8 channels, 10-bit |
| DAC | 2 channels, 10-bit |
| Communication Interfaces | I2C, SPI, UART |
| PWM | High-speed PWM |
| Comparators | On-chip analog comparators |
| Package | 36-pin VTLA (VFTLA), exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| Target Application | SMPS / digital power conversion |
| Qualification | AEC-Q100 (family level per distributor data) |
DSPIC33FJ09GS302-E/TL 36-pin vtla (vftla), exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ09GS302-E/TL (36-pin vtla (vftla), exposed pad 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-E/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ09GS302-E/TL is suitable for 6 applications: AC-to-DC Converter Control, Power Factor Correction (PFC), DC-to-DC Converter (LLC / Half-Bridge), Uninterruptible Power Supply (UPS), Digital Lighting and LED Driver Power, Embedded Industrial Control with SMPS Auxiliaries.
AC-to-DC Converter Control
The DSPIC33FJ09GS302-E/TL closes the digital control loop for offline AC-to-DC converters, replacing analog error amplifiers with firmware-based compensation. Its 40 MIPS dsPIC core executes PI or type-II compensators within each switching cycle, while the 8-channel 10-bit ADC samples output voltage and input current with cycle-accurate PWM triggers, keeping switching transients out of the sampling window. The high-speed PWM generates phase-shifted or interleaved gate waveforms, and on-chip comparators provide cycle-by-cycle overcurrent protection independent of CPU latency. In a typical 65-100 kHz flyback or forward converter, the 9 KB Flash comfortably holds control firmware plus housekeeping. The -40C to +125C range suits enclosed adapters and industrial supplies with hot internal ambients, where analog controller alternatives would require derating.
Recommended
Power Factor Correction (PFC)
Microchip's interleaved PFC reference design directly demonstrates this device family driving a universal-input boost PFC stage producing a 350 W high-voltage DC output. The DSPIC33FJ09GS302-E/TL implements average-current-mode PFC control digitally: the ADC samples rectified line voltage and inductor current synchronously, firmware computes the current command with input feedforward, and the high-speed PWM modulates the boost switch at fixed frequency. The on-chip 10-bit DACs set comparator thresholds for fast overcurrent trips, essential at AC line zero-crossings where current distortion is worst. At 40 MIPS the core sustains both the inner current loop and the outer voltage loop plus housekeeping in under 9 KB of Flash. Remappable RPn pins let one PCB serve boost, interleaved-boost, and totem-pole variants.
Recommended
DC-to-DC Converter (LLC / Half-Bridge)
For isolated DC-to-DC stages such as LLC half-bridge or synchronous buck converters, the DSPIC33FJ09GS302-E/TL provides the high-speed PWM resolution and adaptive dead-time control the topology demands. The 40 MIPS core updates phase shift and frequency in real time from output-voltage feedback sampled by the 10-bit ADC, while on-chip comparators catch resonant-tank overcurrent within a single cycle - faster than any software interrupt path. Two 10-bit DACs supply programmable reference levels for those comparators, eliminating external reference ICs. The 1 KB RAM stores running compensator state and fault logs without external memory. Digital burst-mode entry at light load, implemented in firmware, raises light-load efficiency versus fixed-analog controllers, at the cost of engineer-written firmware rather than a set-and-forget analog part.
Recommended
Uninterruptible Power Supply (UPS)
In line-interactive and double-conversion UPS designs, the DSPIC33FJ09GS302-E/TL coordinates inverter, charger, and transfer switch control on one chip. Its 40 MIPS throughput runs multiple concurrent loops - inverter voltage regulation, battery charge current, and input line tracking - while the 8-channel 10-bit ADC monitors battery voltage, bus voltage, and temperature simultaneously through cycle-accurate sampling. The high-speed PWM drives the inverter bridge with dead-time-protected complementary outputs, and comparators provide hardware overcurrent shutdown during output short events. The -40C to +125C extended grade tolerates battery-compartment temperature swings that often exceed consumer ratings. The 9 KB Flash fits the control firmware; heavier UPS platforms with network management typically pair this DSC with a communication supervisor MCU.
Recommended
Digital Lighting and LED Driver Power
High-brightness LED drivers benefit from the DSPIC33FJ09GS302-E/TL's combination of high-speed PWM dimming and precise current regulation. The 10-bit ADC senses LED string current via a shunt, firmware closes the current loop at 40 MIPS, and a separate high-speed PWM channel generates dimming waveforms with resolution and phase control unattainable with analog dimming ICs. On-chip comparators with DAC-programmed thresholds protect against open-string voltage transients and shorted-LED overcurrent within one switching cycle. The 36-pin VTLA exposed-pad package gives good thermal path to the PCB for warm luminaires, backed by the -40C to +125C rating. Dimming curves, color-temperature mixing, and DALI-style protocol tasks fit within 9 KB Flash for single-channel drivers; multi-channel systems should step up to a larger-memory family member.
Recommended
Embedded Industrial Control with SMPS Auxiliaries
Beyond pure power conversion, the DSPIC33FJ09GS302-E/TL serves as a general embedded controller in industrial boards that also need a digitally managed power rail - for example, heaters, motor-adjacent bias supplies, and battery chargers in instrumentation. Its I2C, SPI, and UART interfaces link to sensors and host processors, remappable RPn pins free the layout from fixed peripheral positions, and DSP multiply-accumulate instructions handle filtering of noisy sensor inputs. The 40 MIPS core comfortably multiplexes a slow supervisory workload with a burst-mode SMPS control loop. The exposed-pad VTLA and 125C extended rating allow mounting near hot power stages that would force an industrial-grade MCU to derate. Its 9 KB Flash suits fixed-function firmware; avoid it where bootloaders plus protocol stacks are planned.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ09GS302-E/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ09GS302-I/TL |
|---|---|---|
| Package | 36-pin VTLA (exposed pad) | 36-pin VTLA (exposed pad) - same |
| Brand | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS |
| Flash | 9 KB (3K x 24) | 9 KB (3K x 24) |
| RAM | 1 KB (1024 bytes) | 1 KB (1024 bytes) |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Supply Voltage | 3.3 V | 3.3 V |
| ADC / Peripherals | 8ch 10-bit ADC, 2x 10-bit DAC, HS-PWM, comparators | 8ch 10-bit ADC, 2x 10-bit DAC, HS-PWM, comparators (identical) |
Key Differentiators
- Extended -40C to +125C operation (vs DSPIC33FJ09GS302-I/TL)
- SMPS-specific peripheral set on a 36-pin footprint (vs DSPIC33FJ06GS202A-E/SP)
- Cycle-accurate analog protection without external references (vs Generic analog SMPS controllers)
Design Notes
The 36-pin VTLA exposed pad is the primary thermal and ground path. Solder the pad to a grounded copper pour with an array of thermal vias (typically 3x3 or 4x4, filled or tented per assembly capability) - estimated: skipping the exposed-pad connection can raise junction temperature substantially at full 40 MIPS operation in enclosed supplies. Keep the ADC feedback traces away from PWM gate nets, and route each analog sense pair over a continuous ground plane. Reference the layout guidance in the dsPIC33FJ GS family data sheet (DS-75018) for decoupling pin placement.
Supply the DSC from a clean 3.3 V rail with local 0.1 uF ceramic decoupling on each VDD pin plus bulk capacitance near the package, as the SMPS PWM core draws fast current steps at 40 MIPS. Never derive the controller rail from the same loosely regulated output the DSC is controlling during fault recovery - brownouts can corrupt Flash. Use the on-chip brown-out/reset supervision and verify VDD ramp behavior at power-up; the GS family data sheet specifies minimum VDD rise requirements for reliable initialization.
Plan the 9 KB Flash budget before committing features: a PFC loop plus UART diagnostics fits, but adding a bootloader and a protocol stack typically overflows. Write the overcurrent comparator thresholds through the 10-bit DACs and validate trip latency on hardware - do not rely on interrupt-driven software protection for cycle-level faults. Note that INT0 is not remappable and PWM4 pair remapping is device-dependent per the family data sheet, so confirm RPn assignments early to avoid a PCB respin.
Compliance Information
Distributor classification data lists the dsPIC33FJ GS302 family under Automotive, AEC-Q100. RoHS/lead-free status for this exact MPN was not explicitly stated in the verified web data - confirm via Microchip's Material Declaration. Hotenda product listing references 'Automotive, AEC-Q100' for the family.
