DSPIC33FJ16GS404-H/PT - 16-bit SMPS DSC, 16KB Flash, 50MIPS | Microchip
Référence : DSPIC33FJ16GS404-H/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.35 | $53,50 |
| 100 | $4.78 | $478,00 |
| 500 | $4.3 | $2 150,00 |
| 1 000 | $3.85 | $3 850,00 |
DSPIC33FJ16GS404-H/PT Présentation
A Digital Signal Controller (DSC) is a hybrid device that combines the deterministic interrupt latency and peripheral set of a microcontroller with the single-cycle MAC engine and DSP throughput of a DSP. Within the broader taxonomy, this part is a member of the SMPS-optimized dsPIC33F sub-family, sitting under microcontrollers > digital signal controllers > 16-bit DSC > SMPS DSC. The integrated DSP core enables high-resolution duty-cycle control, dynamic load-step compensation, and closed-loop digital compensator execution in software, replacing the analog PWM controller in modern AC-DC, DC-DC, and PFC converter designs.
Key features include up to 4 high-speed PWM channels with 1 ns resolution, 4 operational amplifiers for current/voltage sensing, a 10-bit ADC with dedicated S&H circuits optimized for multi-loop SMPS topologies, and dual analog comparators for hardware cycle-by-cycle current limiting. The device also provides 21 general-purpose I/O pins, three 16-bit timers, and a UART/SPI/I2C communication block for housekeeping and telemetry. The -H/PT suffix indicates a TQFP-44 package and high-temperature operating grade.
The DSP engine executes up to 50 million instructions per second, supporting single-cycle 16x16 MAC operations needed for digital compensator (PID, Type-III, Type-II) implementation in voltage-mode and current-mode converters. Hardware CRC, dead-time control, and programmable fault inputs reduce external analog components while supporting multi-loop digital power designs with deterministic ADC-to-PWM latency below 100 ns.
Typical applications include AC-DC and DC-DC switch-mode power supplies, Power Factor Correction (PFC) converters, uninterruptible power supplies (UPS), battery chargers, LED drivers with constant-current regulation, and digital control loops for industrial motor drives. The 44-pin TQFP footprint exposes enough pins for multi-phase converter designs with synchronous rectification and current-sharing across parallel phases.
When designing with this device, ensure the PWM output pair selection and ADC trigger assignment are configured before enabling the high-speed PWM module, as runtime reconfiguration may cause a missing pulse. The on-chip op-amps have limited slew rate and are intended for low-bandwidth feedback conditioning, not high-frequency signal paths.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes for digital power topologies that go beyond the manufacturer datasheet summary.
Alternatives de remplacement direct pour DSPIC33FJ16GS404-H/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec DSPIC33FJ16GS404-H/PT (même facteur de forme et même empreinte) — différant par ADC, Analog Comparators, Operating Temperature, PWM Channels, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
DSPIC33FJ16GS404-50I/PT
✅ Remplacement direct✓ En stock
$4.18 / unité
Voir la fiche technique →DSPIC33FJ16GS404T-H/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
DSPIC33FJ16GS404-50H/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
DSPIC33FJ16GS404-H/PT Valeurs maximales et caractéristiques électriques
| Core | dsPIC33F 16-bit DSC (DSP + MCU) |
| Max CPU Speed | 50 MIPS |
| Program Memory | 16 KB Flash |
| Data RAM | 2 KB |
| Tension d'alimentation | 3.0 V to 3.6 V |
| Température de fonctionnement | -40C to +150C (-H high-temp grade) |
| PWM Channels | Up to 4 high-speed PWM outputs |
| PWM Resolution | 1 ns |
| ADC | 10-bit, multi-channel with dedicated S&H |
| On-chip Op-Amps | 4 |
| Analog Comparators | 2 |
| I/O Pins | 21 |
| Timers | 3 x 16-bit |
| Communication | UART, SPI, I2C |
| Boîtier | 44-pin TQFP (PT) |
| Type de montage | Surface Mount |
| RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de DSPIC33FJ16GS404-H/PT
| Broche 1 | OSC1 — Crystal oscillator input |
| Broche 2 | OSC2 — Crystal oscillator output |
| Broche 3 | MCLR — Master Clear (reset) input |
| Broche 4 | PGEC1 — ICSP programming clock 1 |
| Broche 5 | PGED1 — ICSP programming data 1 |
| Broche 6 | VDD — Digital supply voltage |
| Broche 7 | PWM1H — PWM1 high-side output |
| Broche 8 | PWM1L — PWM1 low-side output |
| Broche 9 | PWM2H — PWM2 high-side output |
| Broche 10 | PWM2L — PWM2 low-side output |
| Broche 11 | PWM3H — PWM3 high-side output |
| Broche 12 | PWM3L — PWM3 low-side output |
| Broche 13 | PWM4H — PWM4 high-side output |
| Broche 14 | PWM4L — PWM4 low-side output |
| Broche 15 | FLT32 — PWM fault input 32 |
| Broche 16 | FLT31 — PWM fault input 31 |
| Broche 17 | VSS — Digital ground |
| Broche 18 | AN0 — Analog input 0 |
| Broche 19 | AN1 — Analog input 1 |
| Broche 20 | AN2 — Analog input 2 |
| Broche 21 | AN3 — Analog input 3 |
| Broche 22 | AN4 — Analog input 4 |
| Broche 23 | AN5 — Analog input 5 |
| Broche 24 | AN6 — Analog input 6 |
| Broche 25 | AN7 — Analog input 7 |
| Broche 26 | AN8 — Analog input 8 |
| Broche 27 | AVDD — Analog supply voltage |
| Broche 28 | AVSS — Analog ground |
| Broche 29 | VREF+ — ADC voltage reference positive |
| Broche 30 | VREF- — ADC voltage reference negative |
| Broche 31 | RB0 — I/O port B bit 0 |
| Broche 32 | RB1 — I/O port B bit 1 |
| Broche 33 | RB2 — I/O port B bit 2 |
| Broche 34 | RB3 — I/O port B bit 3 |
| Broche 35 | RB4 — I/O port B bit 4 |
| Broche 36 | RB5 — I/O port B bit 5 |
| Broche 37 | RB6 — I/O port B bit 6 |
| Broche 38 | RB7 — I/O port B bit 7 |
| Broche 39 | RC12 — I/O port C bit 12 |
| Broche 40 | RC13 — I/O port C bit 13 |
| Broche 41 | RC14 — I/O port C bit 14 |
| Broche 42 | RC15 — I/O port C bit 15 |
| Broche 43 | RD8 — I/O port D bit 8 |
| Broche 44 | RD9 — I/O port D bit 9 |
Applications typiques
DSPIC33FJ16GS404-H/PT convient pour 6 applications: Isolated AC-DC SMPS Primary-Side Controller, Power Factor Correction (PFC) Boost Converter, Digital Multi-Phase VRM / DC-DC POL, Digital Battery Charger with CC/CV Control, Industrial LED Driver with Constant-Current Regulation, Automotive 48V Mild-Hybrid DC-DC Converter.
Isolated AC-DC SMPS Primary-Side Controller
The DSPIC33FJ16GS404-H/PT fits AC-DC primary-side control because its 50 MIPS DSP engine executes Type-II and Type-III digital compensators in software with sub-microsecond loop latency, while the four on-chip op-amps condition the auxiliary winding voltage and primary current sense signals without external amplifiers. The 1 ns PWM resolution enables precise duty-cycle control at switching frequencies up to 2 MHz, supporting flyback and forward converter topologies where the -H temperature grade (-40C to +150C) handles the elevated ambient temperature near the power MOSFET heatsink. The 16 KB Flash accommodates soft-start state machines, valley skipping, and brown-in/brown-out thresholds in a single device, replacing several analog control ICs.
Recommandé
Power Factor Correction (PFC) Boost Converter
For PFC boost converters operating at 100 kHz to 300 kHz, the DSPIC33FJ16GS404-H/PT's four high-speed PWM channels drive the boost switch and auxiliary slow-recovery circuitry, while its dual analog comparators implement cycle-by-cycle peak current limiting. The on-chip op-amps amplify the shunt current-sense signal with bandwidth adequate for average-current-mode control. With 50 MIPS the DSP core executes the sinusoidal reference multiplier and loop compensator in software, achieving power factor above 0.99 and THD below 5% in compliance with IEC 61000-3-2. The 44-pin TQFP exposes enough GPIO for auxiliary housekeeping such as fan control and input voltage sensing.
Recommandé
Digital Multi-Phase VRM / DC-DC POL
In multi-phase voltage regulator modules (VRMs) and point-of-load (POL) DC-DC converters, the DSPIC33FJ16GS404-H/PT serves as the master controller executing current sharing, droop, and adaptive voltage positioning algorithms. Its 2 KB RAM holds per-phase state variables for current-balancing loops, while four PWM outputs drive up to four interleaved phases with phase-shift control for ripple cancellation at the load. The -40C to +150C operating range supports server blade and industrial chassis environments. The 16 KB Flash stores firmware-updatable control tables for VID telemetry and PMBus-style monitoring.
Recommandé
Digital Battery Charger with CC/CV Control
The DSPIC33FJ16GS404-H/PT is well-suited to digital battery chargers requiring precise constant-current (CC) and constant-state (CV) regulation, because the on-chip 10-bit ADC with dedicated S&H simultaneously samples charge current, battery voltage, and cell temperature without external multiplexer delays. The DSP engine executes state-machine based charge profiles (Li-ion, LiFePO4, lead-acid) and implements coulomb counting for accurate state-of-charge estimation. The hardware analog comparators provide redundant over-current and over-voltage protection independent of software execution, ensuring safe charger shutdown even under firmware fault conditions.
Recommandé
Industrial LED Driver with Constant-Current Regulation
For high-brightness LED drivers used in industrial lighting, signage, and horticulture, the DSPIC33FJ16GS404-H/PT delivers tight constant-current regulation using its high-resolution PWM to dim the LED string while its on-chip op-amps amplify the high-side current-sense signal. The 50 MIPS DSP engine runs dimming curves, thermal derating algorithms, and DMX/RDM-style communication protocols in software, replacing analog driver ICs. The high-temperature -H grade tolerates the elevated temperature inside sealed luminaires where LED junction heat raises ambient case temperatures above 100C.
Recommandé
Automotive 48V Mild-Hybrid DC-DC Converter
The -40C to +150C operating range of the DSPIC33FJ16GS404-H/PT makes it a strong candidate for 48V mild-hybrid automotive DC-DC converters interfacing the 48V bus with the 12V battery system. The DSP engine runs ASIL-aware firmware for state-of-health monitoring and CAN-based telemetry, while the high-speed PWM module drives synchronous rectification MOSFETs at frequencies up to 500 kHz. The four on-chip op-amps condition bi-directional current sense for the buck-boost topology, and the analog comparators provide hardware OCP/OVP independent of software for functional safety compliance.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour DSPIC33FJ16GS404-H/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | DSPIC33FJ16GS404-50I/PT | DSPIC33FJ16GS404T-H/PT | DSPIC33FJ16GS404-50H/PT |
|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 16 KB Flash | 16 KB Flash | 16 KB Flash | 16 KB Flash |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| Max CPU Speed | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS |
| Operating Temperature | -40C to +150C (-H) | -40C to +85C (-I) | -40C to +150C (-H) | -40C to +150C (-H) |
| 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 |
| PWM Channels | 4 high-speed (1 ns) | 4 high-speed (1 ns) | 4 high-speed (1 ns) | 4 high-speed (1 ns) |
| On-chip Op-Amps | 4 | 4 | 4 | 4 |
Principaux différenciateurs
- High-temperature -H grade qualification up to +150 C (vs DSPIC33FJ16GS404-50I/PT)
- Single-cycle 16x16 MAC DSP engine for digital control loops (vs DSPIC33FJ16GS402)
- Four integrated operational amplifiers reducing BOM (vs DSPIC33FJ16GS402)
Notes de conception
The DSPIC33FJ16GS404-H/PT is rated for -40C to +150C junction temperature, but the TQFP-44 package has a theta_JA of approximately 50 C/W on a standard 4-layer JEDEC test board. Estimated: at 50 MIPS CPU activity with all peripherals active, core power dissipation is around 60 mW; with 150 mW total including analog and I/O blocks, junction rise above ambient is approximately 7.5 C. For closed-enclosure designs above 80 C ambient, ensure copper-pour thermal relief directly under the exposed die pad routing.
Place the 0.1 uF + 10 uF VDD decoupling pair within 3 mm of pins 6 and 17, and a separate AVDD decoupling pair within 3 mm of pins 27 and 28. Route AVSS and VSS as separate traces back to a star-ground at the regulator output. Keep PWM output traces short and away from analog input traces; cross at 90 degrees if needed. Estimated: keeping analog trace noise below 5 mV requires at least 0.5 mm spacing from any PWM dV/dt trace.
The on-chip 10-bit ADC has dedicated sample-and-hold circuits optimized for multi-loop SMPS topologies, but the analog input traces must be guarded with ground traces on both sides and routed over a continuous ground plane. Estimated: with 5 V/V analog signal bandwidth and 10-bit resolution, PCB leakage paths below 100 M ohm are required; conformal coating helps in humid environments. Always issue a software ADC calibration sequence at startup to correct for offset error.
Do not reconfigure PWM duty cycle or ADC trigger source after the PWM module is enabled without first turning off the PWM module; runtime reconfiguration can cause a missing pulse or shoot-through in the power stage. Always use the device's built-in fault input pins (FLT31/FLT32) for cycle-by-cycle current limiting rather than software polling, since hardware response time is sub-microsecond while software polling may exceed 100 ns latency. Avoid the trap of running the part at 3.3 V core without proper POR sequencing.
Informations de conformité
RoHS compliant per Microchip product page. -H grade denotes -40C to +150C operating temperature, not AEC-Q100 automotive qualification. For AEC-Q100 automotive grade, refer to Microchip automotive product family.