DSPIC33FJ09GS302-E/SS - 16-bit 40 MIPS DSC 9KB Flash | Microchip
MPN: DSPIC33FJ09GS302-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.26 | $32.60 |
| 100 | $2.86 | $286.00 |
| 500 | $2.58 | $1,290.00 |
| 1,000 | $2.31 | $2,310.00 |
DSPIC33FJ09GS302-E/SS Overview
A digital signal controller combines the deterministic control of a microcontroller with the mathematical throughput of a DSP core. In the power-management hierarchy, the dsPIC33FJ GS family sits between general-purpose MCUs and dedicated PWM ASICs, executing multi-loop control algorithms such as voltage-mode, current-mode and power factor correction loops in firmware while offering full programmability.
Key features include the 16-bit dsPIC33F core running at up to 40 MIPS, 9 KB of self-programmable FLASH, 1024 bytes of RAM, an ADC, analog comparators, and the high-speed PWM module that supports complementary outputs, dead-time control and fault shutdown - the functions SMPS designers need for AC-DC, DC-DC and PFC stages.
Architecturally, the device pairs a pipelined 16-bit MCU core with DSP-class multiply-accumulate instructions and dual operand fetch, allowing control-loop code and compensator math to execute in a deterministic time budget. The GS family datasheet (Microchip document 75018) positions this device specifically for multi-loop digital power conversion.
Typical applications include AC-to-DC converters, DC-to-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), LED drivers and battery chargers, where the high-speed PWM and comparators close feedback loops at switching frequencies of hundreds of kilohertz.
Design consideration: budget FLASH carefully - 9 KB is sufficient for one or two control loops plus compensation, but complex multi-protocol firmware may require the larger siblings in the GS family.
This page synthesizes distributor pricing, drop-in family alternatives and practical design notes not found in the manufacturer datasheet alone, with prices as of 2026-09-26.
Drop-in alternatives for DSPIC33FJ09GS302-E/SS — 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/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Packaging, Programming / Debug.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ09GS302-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.17 / Unit
View Datasheet →DSPIC33FJ06GS202AT-I/TL
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →DSPIC33FJ06GS102AT-E/TL
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →DSPIC33FJ06GS202A-E/TL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ06GS202A-E/SP
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →DSPIC33FJ09GS302-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F |
| Maximum CPU Speed | 40 MIPS |
| Clock Frequency | 40 MHz |
| Program Memory (FLASH) | 9 KB (3K x 24) |
| RAM | 1024 bytes |
| Supply Voltage | 3.3 V |
| Package | 28-SSOP (5.30 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| Qualification | AEC-Q100, TS 16949 compliant |
| Peripheral Highlights | High-Speed PWM, ADC, Comparators |
| Target Application Family | SMPS / Digital Power Conversion |
| Technology | CMOS |
| Series | dsPIC 33F |
| Lifecycle Status | In Production (Microchip) |
DSPIC33FJ09GS302-E/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/VREF+ — Analog input 0 / ADC positive voltage reference |
| Pin 3 | AN1/VREF- — Analog input 1 / ADC negative voltage reference |
| Pin 4 | AN2 — Analog input 2 / digital I/O |
| Pin 5 | AN3 — Analog input 3 / digital I/O |
| Pin 6 | AN4 — Analog input 4 / digital I/O |
| Pin 7 | AN5 — Analog input 5 / digital I/O |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO — Oscillator crystal output / clock output |
| Pin 11 | VDD — Positive supply (3.3 V) |
| Pin 12 | PWM1L — High-speed PWM channel 1 low-side output |
| Pin 13 | PWM1H — High-speed PWM channel 1 high-side output |
| Pin 14 | PWM2L — High-speed PWM channel 2 low-side output |
| Pin 15 | PWM2H — High-speed PWM channel 2 high-side output |
| Pin 16 | PWM3L — High-speed PWM channel 3 low-side output |
| Pin 17 | PWM3H — High-speed PWM channel 3 high-side output |
| Pin 18 | AN6 — Analog input 6 / digital I/O |
| Pin 19 | AN7 — Analog input 7 / digital I/O |
| Pin 20 | VDD — Positive supply (3.3 V) |
| Pin 21 | AN8 — Analog input 8 / digital I/O |
| Pin 22 | AN9 — Analog input 9 / digital I/O |
| Pin 23 | AN10 — Analog input 10 / digital I/O |
| Pin 24 | AN11 — Analog input 11 / digital I/O |
| Pin 25 | AN12 — Analog input 12 / digital I/O |
| Pin 26 | PGD — In-circuit serial programming data / debug data |
| Pin 27 | PGC — In-circuit serial programming clock / debug clock |
| Pin 28 | VSS — Ground reference |
Typical Applications
DSPIC33FJ09GS302-E/SS is suitable for 6 applications: AC-to-DC Converter Control, Power Factor Correction (PFC), DC-to-DC Converter Control, Uninterruptible Power Supply (UPS), Automotive Power Conversion, LED Driver and Battery Charger Control.
AC-to-DC Converter Control
The DSPIC33FJ09GS302-E/SS is explicitly positioned by Microchip for AC-to-DC converter control within its GS SMPS DSC family, combining a 16-bit 40 MIPS core with high-speed PWM, ADC and analog comparators on one chip. In a typical offline AC-DC supply, the DSC reads input and output voltages through the ADC, executes voltage- and current-mode compensation in firmware, and drives the power stage through complementary PWM outputs with programmable dead time. On-chip comparators provide cycle-by-cycle overcurrent protection with microsecond response, while firmware implements soft-start, brown-out handling and constant-voltage/constant-current profiles. This replaces multiple analog control ICs and lets one controller serve multiple output rails.
Recommended
Power Factor Correction (PFC)
Power factor correction is a headline application for the DSPIC33FJ09GS302: Microchip publishes an Interleaved PFC reference design based on SMPS dsPIC DSCs that operates from universal AC input and delivers up to 350 W. The controller's high-speed PWM generates the boost-stage switching, its ADC samples inductor current and bus voltage at loop-relevant rates, and its 40 MIPS DSP core runs average-current-mode compensation with multiply-accumulate throughput that 8-bit MCUs cannot match. Firmware enables advanced features such as interleaved phase management, feed-forward line regulation and THD optimization that analog PFC controllers cannot implement, improving efficiency and harmonic performance across the universal input range.
Recommended
DC-to-DC Converter Control
For DC-to-DC converters - buck, boost, buck-boost, flyback and forward topologies - the DSPIC33FJ09GS302-E/SS provides the deterministic control engine needed for hundreds-of-kilohertz switching. The high-speed PWM module supports complementary outputs, leading- and trailing-edge modulation, programmable dead time and hardware fault shutdown, while the ADC can be triggered precisely at mid-PWM-cycle to avoid switching noise. The 9 KB FLASH holds the compensator, soft-start, mode transition and protection firmware with room to spare; the 1024-byte RAM buffers loop state and telemetry. AEC-Q100 qualification additionally allows the same design to migrate into automotive 12 V and 48 V auxiliary converters without a controller change.
Recommended
Uninterruptible Power Supply (UPS)
Microchip's GS-family datasheet explicitly lists uninterruptible power supplies among the supported digital power-conversion applications for the DSPIC33FJ09GS302. A line-interactive or double-conversion UPS requires several coordinated loops: AC input rectification and PFC, battery charge control, and inverter output regulation - all of which the 40 MIPS 16-bit core can schedule deterministically. The high-speed PWM drives inverter bridge legs with dead-time control, the ADC tracks battery voltage/current and output waveform, and the comparators deliver fast hardware fault response. The 9 KB FLASH budget fits one or two loop sets, making this the entry member of the GS family for compact UPS auxiliary and small-capacity designs.
Recommended
Automotive Power Conversion
The DSPIC33FJ09GS302-E/SS carries AEC-Q100 and TS 16949 compliance with a -40C to +125C extended temperature range, making it directly usable in automotive power electronics: LED headlamp drivers, on-board charger auxiliary rails, battery-management measurement supplies and 48 V mild-hybrid DC-DC stages. The E-grade suffix guarantees performance across the full automotive ambient envelope, and its 28-SSOP surface-mount package suits compact ECU co-located boards. Firmware-based control lets one qualified controller be reused across multiple rail architectures, reducing requalification effort. Designers should still perform component-level automotive validation (thermal cycling, AEC functional stress) at the system level per their own qualification plan.
Recommended
LED Driver and Battery Charger Control
Digital LED drivers and battery chargers benefit from the same GS-family feature set that serves SMPS designs: the DSPIC33FJ09GS302's high-speed PWM provides dimming-resolution current control, its ADC and comparators implement constant-current regulation and fast fault shutdown, and its DSP core executes charging state machines (CC/CV, taper, termination) with millisecond-scale supervision layered on switching-frequency loops. The 9 KB FLASH is well matched to a single-channel charger or LED driver profile including communication-free smart charge algorithms. Firmware flexibility supports dimming curves, temperature-derated charging and programmable LED current profiles that fixed analog driver ICs cannot offer, at a controller cost comparable to a dedicated analog IC.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ09GS302-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ09GS302-I/SS | DSPIC33FJ06GS202AT-I/TL | DSPIC33FJ06GS102AT-E/TL | DSPIC33FJ06GS202A-E/SP |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SPDIP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS |
| FLASH Program Memory | 9 KB (3K x 24) | 9 KB (3K x 24) | 6 KB | 6 KB | 6 KB |
| Peripherals | High-Speed PWM, ADC, Comparators | High-Speed PWM, ADC, Comparators | High-Speed PWM, ADC, Comparators | High-Speed PWM, ADC, Comparators | High-Speed PWM, ADC, Comparators |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) |
Key Differentiators
- Maximum FLASH in the 28-pin GS subfamily (vs DSPIC33FJ06GS202AT-I/TL)
- Extended automotive temperature range (vs DSPIC33FJ09GS302-I/SS)
- Automotive qualification (vs DSPIC33FJ06GS102AT-E/TL)
Design Notes
Place 100 nF ceramic decoupling capacitors directly across each VDD/VSS pin pair (pins 11/20 VDD, 8/28 VSS on the 28-SSOP) with short, low-inductance return paths to the ground plane. For the 28-SSOP, add a solid ground plane on layer 2 of the PCB. Keep the high-speed PWM traces (PWM1-3H/L) away from analog ADC inputs (AN0-AN12) to prevent switching transients from corrupting feedback samples; route PWM as short differential pairs to gate drivers.
Sample the ADC at mid-PWM-cycle (center-aligned trigger from the PWM module) so that switching noise windows are avoided - the GS-family ADC supports PWM-triggered conversions precisely for this purpose. Use the on-chip analog comparators for cycle-by-cycle current limiting rather than firmware-only comparison, since hardware comparator response is far faster than software loops at 40 MIPS. Average multiple ADC samples per control cycle when loop bandwidth permits.
The 9 KB FLASH is the smallest budget in this memory class: compile your control firmware early and verify headroom before committing to this MPN, or choose the 9 KB part precisely because the 6 KB GS siblings (DSPIC33FJ06GS202/102) proved too small. Also confirm the supply is a regulated 3.3 V rail - the GS family does not tolerate 5 V on I/O. When substituting -I grade parts for -E grade, verify your worst-case ambient plus self-heating stays within the -40C to +85C industrial ceiling.
Compliance Information
AEC-Q100 and TS 16949 compliance confirmed by Microchip USA product data. RoHS/REACH/lead-free certificates not present in retrieved data - verify on the official Microchip product page.
