DSPIC33FJ16GS502-I/MM - 16-bit SMPS DSC, 40 MIPS, 28-QFN | Microchip
N.º de pieza: DSPIC33FJ16GS502-I/MM ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.62 | $4,62 |
| 10 | $4.05 | $40,50 |
| 100 | $3.21 | $321,00 |
| 500 | $2.84 | $1.420,00 |
| 1.000 | $2.55 | $2.550,00 |
DSPIC33FJ16GS502-I/MM Descripción general
A Digital Signal Controller (DSC) is a hybrid MCU/DSP class of microcontroller that combines a deterministic microcontroller core with a single-cycle DSP engine. Within the broader taxonomy, the DSC sits between a microcontroller (MCU) and a digital signal processor (DSP): MCU -> DSC -> DSP -> signal-processing IC -> semiconductor. The dsPIC33F family is engineered specifically for high-speed closed-loop control, where the DSP engine executes multiply-accumulate (MAC) operations on current/voltage samples in single instruction cycles.
Key features include high-speed PWM (up to 1.04 ns resolution) for power conversion, multiple 10-bit ADCs with as low as 2.5 MSPS conversion rate, analog comparators with programmable reference, and a wide operating voltage range of 3.0V to 3.6V (3.3V typical). The device also supports JTAG boundary scan and offers 21 digital I/O pins. Its low-power modes make it suitable for energy-conscious designs.
Architecturally, the dsPIC33FJ16GS502-I/MM employs a modified Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The integrated SMPS-specific peripherals - high-resolution PWM, fast ADC, and analog comparators - eliminate the need for many external analog components typically required in discrete digital power designs, reducing BOM cost and PCB footprint.
Typical applications include switch-mode power supplies (SMPS), DC-DC converters, power factor correction (PFC), uninterruptible power supplies (UPS), AC-DC converters, and digital LED lighting. The combination of DSP throughput and MCU-style peripherals makes it especially well-suited for multi-loop digital control topologies requiring high-frequency, high-resolution feedback.
When designing with this device, ensure adequate decoupling on all VDD/VSS pin pairs (typically 100 nF + 10 uF bulk per pair) and follow the recommended PCB layout guidelines for the QFN thermal pad, which must be soldered to a ground plane for proper thermal dissipation.
This page synthesizes distributor pricing, drop-in alternative QFQs, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para DSPIC33FJ16GS502-I/MM — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con DSPIC33FJ16GS502-I/MM (mismo factor de forma y huella) — difiere en ADC, Package, Analog Comparators, Core Architecture, Maximum CPU Speed.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DSPIC33FJ16GS502-E/MM
✅ Sustitución directa✓ En stock
$3.32 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-50I/MM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DSPIC33FJ16GS502-H/MM
✅ Sustitución directa✓ En stock
$3.45 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-H/SO
✅ Sustitución directa✓ En stock
$2.98 / unidad
Ver hoja de datos →DSPIC33FJ16GS502-I/MM Valores máximos y características eléctricas
| Product Type | 16-bit Digital Signal Controller (DSC) |
| Family | dsPIC33F "GS" SMPS Family |
| Architecture | Modified Harvard, fixed-point with DSP engine |
| Maximum CPU Speed | 40 MIPS |
| Frecuencia de reloj máxima | 50 MHz |
| Program Memory (Flash) | 16 KB |
| Data RAM | 2 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Nominal Supply Voltage | 3.3 V |
| Maximum Supply Current | 160 mA |
| Digital I/O Pins | 21 |
| ADC | 10-bit, multi-channel |
| Analog Comparators | Yes, with programmable reference |
| Encapsulado | 28-pin QFN-S (6x6 mm) |
| Rango de temperatura de funcionamiento | -40C to +85C (Industrial) |
| Tipo de montaje | Surface Mount |
| JTAG/Boundary Scan | Yes (IEEE 1149.1) |
| Low-Power Modes | Yes |
| Estado RoHS | Compliant |
Configuración de pines de DSPIC33FJ16GS502-I/MM
| Pin 1 | RP23/PWM1H/PMD5/RA7 — I/O port / PWM output / digital power control |
| Pin 2 | RP24/PWM1L/PMD6/RA8 — I/O port / PWM output (low-side complementary) |
| Pin 3 | RP25/PWM2H/PMD7/RA9 — I/O port / PWM output |
| Pin 4 | VDD — Positive supply voltage (3.3V) |
| Pin 5 | RP18/PWM2L/CN20/RB6 — I/O port / PWM output |
| Pin 6 | RP19/PWM3H/CN21/RB7 — I/O port / PWM output |
| Pin 7 | RP20/PWM3L/CN22/RB8 — I/O port / PWM output |
| Pin 9 | RP21/PWM4H/CN23/RB9 — I/O port / PWM output |
| Pin 10 | RP26/PWM4L/PMA5/CN11/RC10 — I/O port / PWM output |
| Pin 11 | RP27/PWM5H/PMA4/CN12/RC11 — I/O port / PWM output |
| Pin 12 | RP28/PWM5L/PMA3/CN13/RC12 — I/O port / PWM output |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | VSS — Ground reference |
| Pin 15 | OSC1/CLKI/RA0 — Crystal oscillator input / external clock |
| Pin 16 | OSC2/CLKO/RA1 — Crystal oscillator output |
| Pin 17 | PGED1/EMUD1/AN0/CVREF-/RA2 — ICD data / analog input / comparator reference |
| Pin 18 | PGEC1/EMUC1/AN1/CVREF+/RA3 — ICD clock / analog input / comparator reference |
| Pin 19 | AN2/C1INC/C2INC/RP0/PMD0/RA4 — Analog input / comparator input |
| Pin 20 | AN3/C1IND/C2IND/RP1/PMD1/RA5 — Analog input / comparator input |
| Pin 21 | AN4/C1INA/C2INA/RP2/PMD2/RB0 — Analog input / comparator input A |
| Pin 22 | AN5/C1INB/C2INB/RP3/PMD3/RB1 — Analog input / comparator input B |
| Pin 23 | VSS — Ground reference |
| Pin 24 | AN6/RP4/PMD4/RB2 — Analog input / I/O port |
| Pin 25 | AN7/RP5/PMA6/RB3 — Analog input / I/O port |
| Pin 26 | AN8/C3INC/RP6/PMA7/RB4 — Analog input / I/O port / comparator 3 input |
| Pin 27 | AN9/C3IND/RP7/RB5 — Analog input / I/O port / comparator 3 input |
| Pin 28 | PGED2/EMUD2/AN10/C3INA/RP8/RC8 — ICD data / analog input / comparator 3 input |
| Pin 29 | PGEC2/EMUC2/AN11/C3INB/RP9/RC9 — ICD clock / analog input / comparator 3 input |
| Pin 30 | MCLR — Master clear (reset) input, active low |
| Pin EP | Exposed Pad (VSS) — Thermal pad, must be soldered to PCB ground plane for heat dissipation |
Aplicaciones típicas
DSPIC33FJ16GS502-I/MM es adecuado para 6 aplicacións: Switch-Mode Power Supplies (SMPS), Power Factor Correction (PFC), DC-DC Converters (Digital Control), Uninterruptible Power Supplies (UPS), AC-DC Converters (Digital), Digital LED Lighting Control.
Switch-Mode Power Supplies (SMPS)
The DSPIC33FJ16GS502-I/MM is purpose-built for digital control of switch-mode power supplies. Its high-resolution PWM (down to 1.04 ns edge placement resolution) and 10-bit ADC with fast sample rate enable precise duty-cycle control in multi-loop SMPS topologies. The 40 MIPS DSP engine executes current-mode and voltage-mode control loops in single instruction cycles, while integrated analog comparators with programmable references support peak current limiting. Designers typically pair this DSC with external MOSFET gate drivers to build digital buck, boost, and flyback converters.
Recomendado
Power Factor Correction (PFC)
Power factor correction controllers require real-time processing of input current and voltage waveforms at line frequencies of 50/60 Hz. The DSPIC33FJ16GS502-I/MM's DSP engine efficiently computes average current-mode control algorithms for boost-PFC stages, while the integrated 10-bit ADC samples input current with the speed required for THD optimization. At 40 MIPS, the device handles the algorithm execution plus housekeeping for relay control and protection logic, making it ideal for CCM PFC front-ends in industrial power supplies and LED drivers.
Recomendado
DC-DC Converters (Digital Control)
For digitally-controlled DC-DC converters, the DSPIC33FJ16GS502-I/MM provides the PWM resolution and ADC throughput needed for high-bandwidth voltage regulation. The device supports multi-phase buck topologies where interleaved PWM phases reduce output ripple. Its 28-QFN-S (6x6 mm) package suits compact point-of-load (POL) modules. The fixed-point DSP engine executes PI/PID compensators and feed-forward terms in real time, replacing traditional analog control ICs with software-configurable flexibility that simplifies design iteration and field upgrades.
Recomendado
Uninterruptible Power Supplies (UPS)
The DSPIC33FJ16GS502-I/MM's combination of DSP throughput and MCU peripherals suits small-to-medium UPS systems requiring inverter control, battery management, and AC line monitoring. The 21 digital I/O pins accommodate relay drivers, status LEDs, and communication interfaces (UART, SPI, I2C). At 3.3V operation with low-power modes, it can remain in standby monitoring state and rapidly wake on AC loss detection. The 16 KB program memory fits inverter control firmware plus battery-state algorithms.
Recomendado
AC-DC Converters (Digital)
Digitally-controlled AC-DC converters benefit from the DSPIC33FJ16GS502-I/MM's mixed-signal capabilities. The high-speed 10-bit ADC samples rectified line voltage and output current at high rates, while the analog comparators trigger on instantaneous over-current events for hardware protection. The DSP engine executes RMS calculations, PFC loops, and output regulation algorithms in real time. The 40 MIPS performance is sufficient for sub-1 kW converter designs where software configurability outweighs the simplicity of analog controllers.
Recomendado
Digital LED Lighting Control
The DSPIC33FJ16GS502-I/MM is well-suited for digitally-controlled LED drivers where precise PWM dimming and current regulation matter. Its high-resolution PWM generates smooth dimming curves with minimal flicker, while the 10-bit ADC monitors LED string current for closed-loop regulation. Multiple PWM outputs support RGB or tunable-white LED channels. The 28-QFN-S package is small enough for compact bulb-form-factor drivers, and the 16 KB Flash accommodates dimming profiles, color-mixing algorithms, and DMX/network protocol stacks.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DSPIC33FJ16GS502-I/MM — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DSPIC33FJ16GS502-E/MM | DSPIC33FJ16GS502-50I/MM | DSPIC33FJ16GS502-H/MM |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| CPU Speed | 40 MIPS / 50 MHz max | 40 MIPS / 50 MHz max - same | 40 MIPS / 50 MHz max - same | 40 MIPS / 50 MHz max - same |
| Program Flash | 16 KB | 16 KB - same | 16 KB - same | 16 KB - same |
| Data RAM | 2 KB | 2 KB - same | 2 KB - same | 2 KB - same |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V - same | 3.0V to 3.6V - same | 3.0V to 3.6V - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +150C (High-temp) |
| Key Differentiator | Industrial temp, standard SMPS DSC | Extended -40C to +125C grade | 50 MHz speed grade marking | High-temperature -40C to +150C grade |
Diferenciadores clave
- Standard industrial temperature grade (I) variant with widest distributor availability (frente a DSPIC33FJ16GS502-E/MM)
- 50 MHz speed-grade marking on the package top side (frente a DSPIC33FJ16GS502-50I/MM)
- High-temperature grade option (-40C to +150C) (frente a DSPIC33FJ16GS502-H/MM)
Notas de diseño
The 28-QFN-S package features an exposed thermal pad (EP) that must be soldered to a PCB ground plane for proper heat dissipation. Use an array of thermal vias (typically 0.3 mm drill, 0.6 mm pitch) under the pad to conduct heat to inner ground planes. The EP is internally connected to VSS - never route high-speed signals or power traces directly under the EP. Place decoupling capacitors (0.1 uF ceramic + 10 uF bulk) as close as possible to each VDD pin pair to minimize supply noise that could couple into ADC readings.
Power decoupling is critical for SMPS applications. Use a 10 uF tantalum or ceramic bulk capacitor at the board-level power entry, plus 0.1 uF ceramic capacitors within 5 mm of each VDD pin. Separate analog supply (AVDD, if available) and digital supply (VDD) filtering is recommended for best ADC performance. Estimated: a 100 nF X7R ceramic + 10 uF tantalum pair per VDD pair typically holds supply ripple below 20 mVpp under 40 MIPS operation with PWM switching.
Common pitfalls include: (1) leaving the MCLR pin floating - it must be pulled high through a 10 kOhm resistor with optional 100 nF cap for noise immunity; (2) failing to connect all VSS pins including the EP pad, which can cause programming failures and erratic operation; (3) using long traces on PGEDx/PGECx ICD pins - keep them under 50 mm with ground shielding for reliable in-circuit debugging; (4) omitting the recommended bulk capacitor on VCAP, which can lead to core voltage instability at high MIPS operation.
The DSPIC33FJ16GS502's high-resolution PWM (1.04 ns) makes it sensitive to PWM trace impedance. Route PWM outputs away from analog input traces to minimize capacitive coupling - even 1 pF of crosstalk can introduce tens of millivolts of noise into sensitive current-sense signals. Use guard traces (grounded) on either side of analog input lines, and place analog ground and digital ground with a single-point tie near the IC. For multi-MHz PWM switching, consider controlled-impedance routing if traces exceed 25 mm.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C) - not AEC-Q100 qualified; for AEC-Q100 automotive grade consult Microchip automotive product line. Lead-free and halogen-free packaging.
