DSPIC33EP16GS202-I/SS - 70 MIPS 16-Bit Digital Power DSC | Microchip
MPN: DSPIC33EP16GS202-I/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.42 | $4.42 |
| 10 | $3.98 | $39.80 |
| 100 | $3.45 | $345.00 |
| 500 | $3.08 | $1,540.00 |
| 1,000 | $2.79 | $2,790.00 |
DSPIC33EP16GS202-I/SS Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and deterministic control of a microcontroller. In the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated SMPS controller IC: it executes closed-loop control algorithms (such as voltage-mode, current-mode, or nonlinear control for switching power supplies) while simultaneously handling housekeeping tasks, making it the core of software-defined power conversion.
Key differentiating features include the Interconnected High-Speed 12-bit PWM module with dedicated time bases and sub-module synchronization, an on-chip 10-bit/12-bit ADC paired with a programmable gain amplifier (PGA), two analog comparators for fast overcurrent protection, and peripheral interconnection that lets ADC results trigger PWM updates without CPU intervention, minimizing control-loop latency.
Architecturally, the dsPIC33EP core is a modified Harvard 16-bit processor with DSP instruction extensions, two 40-bit accumulators, and hardware division, executing from a 3.0V to 3.6V supply. The device operates from -40C to +125C in the industrial temperature range designated by the -I suffix, and supports In-Circuit Serial Programming (ICSP) via MPLAB SNAP or ICD programmers.
Typical applications include AC-DC and DC-DC switching power supplies, interleaved power factor correction (PFC), LED drivers, battery chargers, and uninterruptible power supply (UPS) control, where the PWM resolution and fast analog comparators enable tight regulation and cycle-by-cycle current limiting.
A key design consideration: the device requires a clean 3.3V regulated supply and proper layout of the high-speed PWM and analog grounds; use separate AVDD/AVSS decoupling and place the PWM outputs away from sensitive analog routing.
This page synthesizes verified distributor data, same-family drop-in alternatives, pinout information, and practical digital-power design notes not found in a single datasheet page, providing engineers with a one-stop selection resource.
Drop-in alternatives for DSPIC33EP16GS202-I/SS β 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 DSPIC33EP16GS202-I/SS (same form factor and footprint) β differing in Operating Temperature, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DSPIC33EP16GS202-E/SS
β Drop-Inπ Reference alternative (not in catalog)
DSPIC33EP32GS202-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DSPIC33EP64GS202-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DSPIC33EP16GS202-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP modified Harvard with DSP extensions |
| Core Clock | 140 MHz internal |
| Instruction Rate | 70 MIPS |
| Program Flash Memory | 16 KB |
| SRAM | 2 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| ADC Resolution | 10-bit / 12-bit with PGA |
| PWM Module | Interconnected High-Speed 12-bit PWM |
| Analog Comparators | 2 on-chip comparators |
| Communication Interfaces | UART, SPI, I2C |
| Operating Temperature | -40C to +125C |
| Package | 28-pin SSOP (SS) |
| Mounting Type | Surface Mount |
| Programming | ICSP (In-Circuit Serial Programming) via PGECx/PGEDx pairs |
| Application Focus | Digital Power / SMPS |
| Lifecycle Status | In Production |
DSPIC33EP16GS202-I/SS Pin Configuration
| Pin 1 | MCLR β Master clear reset / programming voltage input (active low) |
| Pin 2 | AN0/VREF+/RB0 β Analog input 0 / ADC positive reference / port B bit 0 |
| Pin 3 | AN1/VREF-/RB1 β Analog input 1 / ADC negative reference / port B bit 1 |
| Pin 4 | AN2/SS1/RB2 β Analog input 2 / SPI slave select 1 / port B bit 2 |
| Pin 5 | AN3/INDX/RB3 β Analog input 3 / quadrature encoder index / port B bit 3 |
| Pin 6 | AN4/C1IN-/RP0/RB4 β Analog input 4 / comparator 1 inverting input / remappable pin RP0 / RB4 |
| Pin 7 | AN5/C1IN+/RP1/RB5 β Analog input 5 / comparator 1 non-inverting input / remappable pin RP1 / RB5 |
| Pin 8 | VSS β Digital ground reference |
| Pin 9 | OSC1/CLKI/RA2 β Crystal oscillator input / external clock input / RA2 |
| Pin 10 | OSC2/CLKO/RC15 β Crystal oscillator output / clock output / RC15 |
| Pin 11 | VDD β Positive supply (3.0 V to 3.6 V) |
| Pin 12 | RP2/SDA1/SCL1/INT0/RC0 β Remappable pin RP2 / I2C data or clock 1 / external interrupt 0 / RC0 |
| Pin 13 | RP3/U1TX/SDO1/RC1 β Remappable pin RP3 / UART 1 transmit / SPI 1 data out / RC1 |
| Pin 14 | RP4/U1RX/SDI1/RC2 β Remappable pin RP4 / UART 1 receive / SPI 1 data in / RC2 |
| Pin 15 | RP5/SOSCI/T2CK/RC3 β Remappable pin RP5 / secondary oscillator input / Timer 2 external clock / RC3 |
| Pin 16 | RP6/SOSCO/T1CK/RC4 β Remappable pin RP6 / secondary oscillator output / Timer 1 external clock / RC4 |
| Pin 17 | RP7/CVREF/RC5 β Remappable pin RP7 / comparator voltage reference output / RC5 |
| Pin 18 | AVSS β Analog ground reference |
| Pin 19 | AVDD β Analog supply for ADC and comparators |
| Pin 20 | PWM1L/RP8/RC6 β PWM 1 low-side output / remappable pin RP8 / RC6 |
| Pin 21 | PWM1H/RP9/RC7 β PWM 1 high-side output / remappable pin RP9 / RC7 |
| Pin 22 | PWM2L/RP10/RC8 β PWM 2 low-side output / remappable pin RP10 / RC8 |
| Pin 23 | PWM2H/RP11/RC9 β PWM 2 high-side output / remappable pin RP11 / RC9 |
| Pin 24 | PWM3L/RP12/RC10 β PWM 3 low-side output / remappable pin RP12 / RC10 |
| Pin 25 | PWM3H/RP13/RC11 β PWM 3 high-side output / remappable pin RP13 / RC11 |
| Pin 26 | PWM4L/RP14/RC12 β PWM 4 low-side output / remappable pin RP14 / RC12 |
| Pin 27 | PWM4H/RP15/RC13 β PWM 4 high-side output / remappable pin RP15 / RC13 |
| Pin 28 | VDD β Positive supply (3.0 V to 3.6 V) |
Typical Applications
DSPIC33EP16GS202-I/SS is suitable for 6 applications: AC-DC Switching Power Supplies, Interleaved Power Factor Correction (PFC), Digital LED Drivers, Battery Chargers, Uninterruptible Power Supplies (UPS), Industrial DC-DC and Solar MPPT Converters.
AC-DC Switching Power Supplies
The DSPIC33EP16GS202-I/SS serves as the primary control engine for offline AC-DC converters, replacing fixed-function SMPS controller ICs with software-defined control. Its interconnected high-speed 12-bit PWM generates precisely dead-time-controlled drive waveforms for buck, flyback, and half-bridge topologies, while the two on-chip comparators deliver cycle-by-cycle overcurrent limiting without software latency. The 10/12-bit ADC with PGA reads output voltage and current-sense signals directly, closing the control loop at rates sufficient for switching frequencies beyond 100 kHz. Firmware-based control also enables features such as soft-start sequencing, adaptive burst mode for light-load efficiency, and digital telemetry over UART or I2C, giving designers flexibility impossible with analog controllers.
Recommended
Interleaved Power Factor Correction (PFC)
Microchip's own reference design for the GS202 family demonstrates an interleaved PFC application, where the DSPIC33EP16GS202-I/SS controls multiple boost phases with programmable phase offset from the high-speed PWM sub-modules. Interleaving reduces input current ripple and eases EMI filtering compared with single-phase PFC, and the DSC's DSP engine handles the multiplying-control mathematics required to shape input current in phase with line voltage. The ADC synchronizes to the PWM time base so current samples are taken at optimal points in each switching cycle, minimizing switching-noise corruption of the measurement. The 70 MIPS instruction rate provides ample headroom for both the fast inner current loop and the slower outer voltage loop in a single processor.
Recommended
Digital LED Drivers
In professional and architectural LED lighting, the DSPIC33EP16GS202-I/SS provides high-resolution PWM dimming with precise constant-current regulation. The 12-bit PWM resolution enables deep dimming ratios and flicker-free operation, while the on-chip comparators protect the LED string from overcurrent on a cycle-by-cycle basis. The PGA allows direct connection of low-level current-sense resistor signals, reducing external component count, and the I2C interface supports DALI- or DMX-style dimming protocol stacks in firmware. Operating from -40C to +125C, the device suits both outdoor luminaires and enclosed fixtures with elevated ambient temperatures, and the same PCB can be reprogrammed across product lines for different driver wattages and topologies.
Recommended
Battery Chargers
The DSPIC33EP16GS202-I/SS implements multi-stage charging algorithms (trickle, constant current, constant voltage, termination) entirely in firmware for Li-ion, lead-acid, and NiMH chemistries. Its ADC samples battery voltage and current at programmable rates synchronized to the PWM switching, and the PGA amplifies small shunt signals for accurate charge-current control. The fast comparators enforce hardware current limits protecting both the charger and the cell during fault conditions, independent of software state. Because control parameters live in firmware, a single hardware platform supports multiple battery chemistries and charge profiles via firmware variants, and the UART interface enables host-side charge-status telemetry in smart-charging and industrial battery-backup systems.
Recommended
Uninterruptible Power Supplies (UPS)
Line-interactive and double-conversion UPS designs use the DSPIC33EP16GS202-I/SS to coordinate inverter, charger, and transfer-switch control in one processor. The high-speed PWM generates the inverter sinusoidal drive (typically with SPIC or third-harmonic modulation computed by the DSP engine at 70 MIPS), while the ADC monitors battery voltage, bus voltage, and load current for state-of-charge estimation and fault detection. Comparator-based hardware overcurrent protection guards the inverter bridge against short-circuit events faster than any software loop can react. The industrial temperature rating supports UPS electronics installed in unconditioned environments, and the 16 KB flash accommodates a complete single-phase inverter control stack including grid-sync and transfer logic.
Recommended
Industrial DC-DC and Solar MPPT Converters
Maximum power point tracking (MPPT) solar converters benefit directly from the DSPIC33EP16GS202-I/SS's combination of DSP throughput and digital-power peripherals. The ADC continuously samples panel voltage and current, and the 70 MIPS DSP engine executes perturb-and-observe or incremental-conductance MPPT algorithms alongside the fast inner converter control loop. The high-resolution PWM adjusts the power-stage duty cycle with fine granularity, improving harvest efficiency at partial irradiance, while on-chip comparators protect against input overcurrent and output shorts. The 3.0V to 3.6V supply and low peripheral count allow compact, low-cost control cards for micro-inverters, solar optimizers, and telecom rectifier modules in the -40C to +125C industrial range.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP16GS202-I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP16GS202-E/SS | DSPIC33EP32GS202-I/SS | DSPIC33EP64GS202-I/SS |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB | 32 KB | 64 KB |
| Performance | 70 MIPS (140 MHz core) | 70 MIPS (140 MHz core) | 70 MIPS (140 MHz core) | 70 MIPS (140 MHz core) |
| Operating Temperature | -40C to +125C | Extended grade (above +125C) | -40C to +125C | -40C to +125C |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Digital Power Peripherals | HS PWM + ADC/PGA + 2 comparators | Identical | Identical | Identical |
| Relative Cost | Baseline (lowest flash, lowest cost in family) | Premium (extended temp grade) | Moderately higher (2x flash) | Higher (4x flash) |
Key Differentiators
- Purpose-built digital-power peripheral set (vs DSPIC33EP128GP502-H/SO)
- Lowest-cost entry point in the GS202 digital-power family (vs DSPIC33EP64GS202-I/SS)
- Extended-temperature upgrade path without redesign (vs DSPIC33EP16GS202-E/SS)
Design Notes
Layout this digital-power DSC with strict analog/digital partitioning: use separate AVDD (pin 19) and AVSS (pin 18) for the ADC/PGA domain and return all analog ground currents to a single point at the IC. Decouple VDD (pins 11, 28) and AVDD each with 0.1 uF ceramic plus 4.7-10 uF bulk within 5 mm of the pins. Route high-speed PWM output pairs (pins 20-27) as short, matched traces away from analog inputs AN0-AN5 to prevent switching transients coupling into ADC samples taken synchronized to the PWM time base.
Supply the device from a clean 3.0-3.6 V rail; a 3.3 V LDO or buck output with less than 50 mV ripple keeps ADC accuracy within datasheet limits. Estimated: at 70 MIPS the core current draw is on the order of tens of milliamps (per family datasheet electrical characteristics), so a 100 mA-rated 3.3 V auxiliary supply provides ample margin when GPIO loads are modest. Reference Microchip's digital-power reference designs (e.g., the interleaved PFC design) for proven bias-supply topologies feeding VDD and AVDD from the converter's own outputs.
ICSP programming requires matched PGECx/PGEDx pairs - if PGEC2 carries ICSPCLK, ICSPDAT must come from PGED2; mixing pairs from different pairs prevents programming (per Microchip programming documentation 70005192b). Reserve MCLR (pin 1) with a 10 k ohm pull-up and leave it accessible via header for in-circuit reprogramming. Do not exceed 16 KB flash when planning firmware: linear feedback control loops plus a communication stack can approach the limit quickly - if compile size exceeds roughly 14 KB, migrate to DSPIC33EP32GS202-I/SS (same footprint) before code-freeze.
Compliance Information
RoHS compliance and lead-free status per Microchip's standard current-production policy for the dsPIC33EP industrial family; specific REACH and conflict-minerals declarations should be confirmed on the official Microchip product page.
