DSPIC33FJ06GS101A-I/SO - 40 MIPS SMPS DSC 6KB FLASH | Microchip
MPN: DSPIC33FJ06GS101A-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.25 | $425.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.48 | $3,480.00 |
DSPIC33FJ06GS101A-I/SO Overview
A Digital Signal Controller combines a microcontroller (MCU) with digital signal processor (DSP) features in a single core. In the power-management hierarchy, the dsPIC33F GS family sits between general-purpose MCUs and dedicated digital power ICs, providing programmable control loops for switch-mode power supplies (SMPS) rather than fixed-function hardware.
Key features include high-speed PWM peripherals purpose-built for digital power conversion, on-chip analog comparators, ADC inputs, and connectivity via I2C, SPI, UART/USART, IrDA and LIN. Brown-out detect and watchdog peripherals support robust operation in mains-powered equipment.
The architecture pairs the 16-bit dsPIC core with DSP instructions, enabling fast execution of PID and compensation-loop algorithms. The GS-series peripheral set was designed specifically for multi-loop digital SMPS topologies, so phase current sharing, burst mode and fault blanking can be implemented in firmware.
Typical applications include AC to DC converters, DC to DC converters, Power Factor Correction (PFC) stages, and uninterruptible power supplies (UPS), plus digital lighting ballasts.
Design tip: verify errata sheets from Microchip before finalizing firmware, and budget the 256-byte RAM carefully when writing control loops in C with the MPLAB XC-DSC compiler.
This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in family alternatives, application guidance, and comparison data in one place.
Drop-in alternatives for DSPIC33FJ06GS101A-I/SO — 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 DSPIC33FJ06GS101A-I/SO (same form factor and footprint) — differing in Operating Temperature, Package, Packaging, Mounting Type, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ06GS101A-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ06GS101-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ06GS001-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ06GS101A-I/SO Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33F 16-bit DSC |
| Core Size | 16-bit |
| Speed | 40 MIPS |
| Program Memory Size | 6KB (2K x 24) FLASH |
| RAM Size | 256 bytes |
| Connectivity | I2C, IrDA, LIN, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, LVD, PWM, WDT |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (TA) |
| Package | 18-SOIC (0.295 inch, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| Number of Pins | 18 |
| Series | dsPIC 33F GS |
| Target Application | Digital SMPS / Power Conversion |
| RoHS Status | Compliant |
DSPIC33FJ06GS101A-I/SO 18-soic (0.295 inch, 7.50 mm width) Pin Configuration Guide
Pin configuration for DSPIC33FJ06GS101A-I/SO (18-soic (0.295 inch, 7.50 mm width) 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 DSPIC33FJ06GS101A-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ06GS101A-I/SO is suitable for 6 applications: AC to DC Converters, DC to DC Converters, Power Factor Correction (PFC), Uninterruptible Power Supplies (UPS), Digital Lighting Ballasts and LED Drivers, Multi-Loop SMPS Prototyping and Reference Designs.
AC to DC Converters
The DSPIC33FJ06GS101A-I/SO is designed by Microchip specifically for digitally controlled AC to DC converter stages. Its 40 MIPS dsPIC33F core executes voltage-mode or current-mode control loops fast enough for switching frequencies in the tens of kilohertz to low hundreds of kilohertz, while the high-speed PWM peripheral provides complementary outputs with dead-time control. On-chip comparators support fast cycle-by-cycle overcurrent protection, and the ADC samples output voltage and current feedback for regulation. Firmware-based control allows soft-start profiles, burst mode and adaptive compensation that fixed-function controller ICs cannot offer. Operate from a regulated 3.3V rail derived from an auxiliary winding, and budget the 256-byte RAM for loop state variables.
Recommended
DC to DC Converters
In DC to DC converter applications such as telecom bricks, point-of-load supplies and battery chargers, the DSPIC33FJ06GS101A-I/SO provides fully programmable control. The GS-family PWM module supports phase-shifted, complementary and single-edge topologies with programmable dead time, and the 16-bit DSP core runs PI and PID compensation in firmware with deterministic execution. The ADC (integrated in the GS101A variant) digitizes current and voltage feedback for multi-loop schemes, while on-chip comparators give hardware-level fast overcurrent response independent of software latency. Because control characteristics live in firmware, one PCB can serve multiple output voltages or charger profiles, reducing SKU proliferation. Per Microchip, these devices directly target DC to DC power conversion.
Recommended
Power Factor Correction (PFC)
The DSPIC33FJ06GS101A-I/SO implements boost-PFC control loops as explicitly intended by Microchip for the dsPIC33F GS family. The 40 MIPS core sustains the average-current-mode control math required for sinusoidal input current shaping, and the high-speed PWM supports trailing-edge modulation for boost stages. The ADC samples the input voltage waveform for feedforward, while comparators provide rapid switch overcurrent shutdown during input transients. Firmware PFC enables compliance with harmonic limits across a wide input range, plus features such as valley switching and phase management that analog controllers implement only in hardware-fixed ways. Place the DSC on a clean 3.3V digital rail and route high dv/dt switch nodes away from analog feedback traces.
Recommended
Uninterruptible Power Supplies (UPS)
Microchip lists uninterruptible power supplies as a primary target for the dsPIC33FJ06GS101A-I/SO. A UPS requires coordinated control of an AC/DC charger, a DC/AC inverter and transfer logic - tasks the 40 MIPS DSC can partition across interrupts and the DSP-capable core. The high-speed PWM generates inverter switching with dead-time control, the ADC reads battery voltage, current and output waveform feedback, and UART connectivity supports status reporting to a host. The industrial -40C to +85C rating suits transformer-bay environments, and brown-out detect plus watchdog timer protect against firmware lockup in always-on equipment. RAM discipline is essential at 256 bytes; keep waveform tables in FLASH and stream them rather than buffering in RAM.
Recommended
Digital Lighting Ballasts and LED Drivers
Digitally controlled lighting power stages benefit from the DSPIC33FJ06GS101A-I/SO's programmable PWM and feedback capability. Dimming profiles, lamp strike sequences and fault handling that would require analog trimming in conventional ballast controllers are implemented in firmware, so one board supports multiple lamp types or dimming curves (0-10V, DALI via UART/LIN, or PWM input). The 40 MIPS core closes current loops for constant-current LED drivers at switching frequencies common in lighting converters, and the ADC enables output regulation plus temperature derating via a sensor channel. The 18-SOIC's compact 7.50 mm body fits within typical ballast PCB envelopes, and LIN connectivity supports automotive-grade lighting networks.
Recommended
Multi-Loop SMPS Prototyping and Reference Designs
The DSPIC33FJ06GS101A-I/SO is ideal as the controller in multi-loop digital SMPS development, following Microchip's digital power reference designs. Because PWM parameters, gain scheduling and protection thresholds are all firmware registers, engineers can tune loop response live over a communication link instead of swapping analog compensation components - dramatically shortening SMPS development cycles. The on-chip ADC and comparators close voltage and current loops, and MPLAB X with the XC-DSC compiler plus a low-cost programmer provides the complete toolchain. The A-stepping silicon revision resolves issues documented in the family errata, making the GS101A the preferred revision for new prototypes versus the original GS101 stepping.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ06GS101A-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ06GS101A-E/SO | DSPIC33FJ06GS101-I/SO | DSPIC33FJ06GS001-E/SO |
|---|---|---|---|---|
| Package | 18-SOIC (7.50 mm) | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Program Memory | 6KB (2K x 24) FLASH | 6KB (2K x 24) FLASH | 6KB (2K x 24) FLASH | 6KB (2K x 24) FLASH |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| ADC | Yes (GS101A variant) | Yes | Yes | No (GS001 lacks ADC) |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) |
| Connectivity | I2C, IrDA, LIN, SPI, UART/USART | I2C, IrDA, LIN, SPI, UART/USART | I2C, IrDA, LIN, SPI, UART/USART | I2C, IrDA, LIN, SPI, UART/USART |
Key Differentiators
- Latest A-stepping silicon revision (vs DSPIC33FJ06GS101-I/SO)
- Integrated ADC for SMPS feedback (vs DSPIC33FJ06GS001-E/SO)
- Optimized for digital power conversion (vs Generic 16-bit MCUs (e.g., PIC24F))
Design Notes
The DSPIC33FJ06GS101A-I/SO requires a tightly regulated 3.0V to 3.6V supply; a 3.3V LDO fed from an auxiliary SMPS winding is the standard approach in digital power designs. Decouple each VDD pin with 0.1uF ceramic capacitance placed within 5 mm of the pin, plus 4.7uF to 10uF of bulk capacitance near the device. In SMPS environments the digital rail is exposed to switching ripple, so consider an RC or ferrite filter on the DSC supply and keep the analog reference path separate to preserve ADC and comparator accuracy.
Route high dv/dt switch nodes (MOSFET drains, transformer primary) away from the DSC's analog input traces and comparator inputs. Use a solid ground plane with a quiet analog island under the ADC reference and feedback signal routing. Keep MCLR programming trace short and include the standard ICSP header (MCLR, VDD, VSS, PGD, PGC) even in production boards for firmware updates. Place the 18-SOIC so PWM outputs take the shortest path to gate-driver inputs to minimize loop inductance and ringing.
Two pitfalls dominate GS-family designs. First, RAM is only 256 bytes - aggressive C library use (printf, floating point) can exhaust RAM or blow the 6KB FLASH; use fixed-point arithmetic and put constant tables in FLASH. Second, Microchip explicitly notes an errata sheet may exist describing minor operational differences from the DS-75018B data sheet with recommended workarounds - read it before trusting any peripheral behavior. Also configure peripheral pin select (PPS) carefully: remappable UART/SPI/I2C pins are firmware-assigned, and a wrong PPS mapping is a common bring-up failure.
Compliance Information
RoHS/lead-free status inferred from Microchip standard production policy for dsPIC33F in 2026; AEC-Q100 qualification applies to extended-temperature -E variants in related order codes, not confirmed for this -I part.
