DSPIC33FJ16GS404-H/TL - 16KB Flash 16-bit DSC, 50MHz, VTLA-44 | Microchip
MPN: DSPIC33FJ16GS404-H/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.92 | $5.92 |
| 10 | $5.32 | $53.20 |
| 100 | $4.74 | $474.00 |
| 500 | $4.18 | $2,090.00 |
| 1,000 | $3.62 | $3,620.00 |
DSPIC33FJ16GS404-H/TL Overview
A Digital Signal Controller (DSC) is a hybrid device that combines the deterministic interrupt and peripheral ecosystem of a microcontroller (MCU) with the multiply-accumulate (MAC) engine and single-cycle MAC throughput of a digital signal processor (DSP). Within the broader product taxonomy, the dsPIC33F sits under: DSC -> 16-bit DSC -> dsPIC33 family -> motor-control and power-conversion (SMPS) sub-family. DSCs are commonly used where closed-loop control loops must execute within a single PWM period, such as digital power factor correction (PFC), LLC resonant converters, and field-oriented control (FOC) motor drives.
Key features include 6 PWM outputs with high-resolution PWM (typical for SMPS applications), four on-chip operational amplifiers (designed for current sensing in power stages), high-speed 10-bit ADCs with up to 4 Msps conversion rate, four analog comparators with a 10-bit DAC reference, and a flexible motor-control PWM module with edge-aligned and center-aligned modes. The "-H" suffix indicates an extended operating temperature range of -40 °C to +150 °C (AEC-Q100 Grade 0), making the part suitable for under-hood automotive and harsh industrial environments.
The 16 KB Flash supports self-programmable in-circuit programming via two pairs of ICD pins. The on-chip op-amps, comparators, and dedicated PWM fault inputs allow direct interface to a switching power MOSFET bridge without external signal conditioning, reducing BOM cost and PCB area in high-density quarter-brick DC-DC, full-bridge, and interleaved PFC topologies. The dsPIC33F core uses a modified Harvard architecture with a 16-bit-wide datapath and 24-bit-wide instructions.
Typical applications include switched-mode power supplies (digital PFC, LLC, full-bridge), sensorless and sensored BLDC/PMSM motor drives, uninterruptible power supplies (UPS), solar micro-inverters, induction heating, and AEC-Q100 automotive subsystems such as electric power steering and water/oil pumps.
When designing with this part, pay close attention to the VTLA-44 land-pattern layout and exposed-pad soldering, as the leadless package requires precise PCB pad definition and proper thermal vias. Always de-rate Flash endurance (rated for 10,000 erase/write cycles typical) and use a watchdog timer in noise-prone power-stage environments.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from Microchip's own dsPIC33FJ family, and practical design notes drawn from the official SMPS dsPIC33 application notes - content not available from any single distributor page.
Drop-in alternatives for DSPIC33FJ16GS404-H/TL — 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 DSPIC33FJ16GS404-H/TL (same form factor and footprint) — differing in ADC, PWM Channels, Package, Program Memory (Flash), Analog Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16GS404T-H/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GS404-50H/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GS404-I/TL
✅ Drop-In✓ In Stock
$3.74 / Unit
View Datasheet →DSPIC33FJ16GS404T-I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.35 / Unit
View Datasheet →DSPIC33FJ16GS404-E/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.62 / Unit
View Datasheet →DSPIC33FJ16GS404-H/TL Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC (modified Harvard, 16-bit data / 24-bit instruction) |
| Program Memory (Flash) | 16 KB |
| Data RAM | 2 KB |
| Maximum CPU Speed | 50 MHz (40 MIPS) |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Package | 44-pin VTLA (QFN-style leadless, 6 x 6 mm, 0.90 mm height) with exposed pad |
| Operating Temperature Range | -40 °C to +150 °C (extended, "-H" / AEC-Q100 Grade 0) |
| PWM Channels | 6 (high-resolution PWM, edge/center-aligned) |
| On-chip Op-Amps | 4 |
| ADC | 10-bit, up to 4 Msps |
| Analog Comparators | 4 (with 10-bit DAC reference) |
| ROM Type | Flash |
| Mounting Type | Surface Mount |
| AEC-Q100 | Qualified (Grade 0 implied by -H extended temperature designation) |
| RoHS Status | Compliant |
DSPIC33FJ16GS404-H/TL 44-pin vtla (qfn-style leadless, 6 x 6 mm, 0.90 mm height) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ16GS404-H/TL (44-pin vtla (qfn-style leadless, 6 x 6 mm, 0.90 mm height) with exposed pad 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 DSPIC33FJ16GS404-H/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ16GS404-H/TL is suitable for 6 applications: Automotive Electric Water/Oil Pump BLDC Drive, Digital Power-Factor-Correction (PFC) Stage, Resonant LLC and Phase-Shifted Full-Bridge DC-DC Converters, Sensorless PMSM / BLDC Field-Oriented Control, Solar Micro-Inverter (Sub-300 W), Uninterruptible Power Supply (UPS) Digital Control.
Automotive Electric Water/Oil Pump BLDC Drive
The DSPIC33FJ16GS404-H/TL's AEC-Q100 Grade 0 rating (-40 °C to +150 °C) and on-chip peripherals make it ideal for automotive 12V/48V brushless DC pump controllers. The four integrated op-amps are configured as differential current-sense amplifiers on each half-bridge leg, while the six PWM channels drive the 3-phase FET bridge directly with complementary outputs and programmable dead-time. The 50 MHz / 40 MIPS DSP engine executes field-oriented-control (FOC) inner loops in roughly 4-6 µs, leaving ample headroom for outer speed/temperature PI loops. Hardware fault inputs from the analog comparators shut down the PWM within 25 ns - critical for short-circuit protection on automotive harnesses.
Recommended
Digital Power-Factor-Correction (PFC) Stage
The DSPIC33FJ16GS404-H/TL is well matched to CCM/DCM interleaved PFC front-ends up to roughly 1-3 kW. The 10-bit ADC at 4 Msps samples the input voltage, inductor current, and output DC bus voltage simultaneously, while the high-resolution PWM module generates the boost-converter gate drive with sub-100 ns duty-cycle granularity for THD optimization. The four on-chip comparators provide cycle-by-cycle over-current protection that latches PWM low within 25 ns. With 16 KB of Flash, firmware can store both CCM and DCM control loops with adaptive input-voltage feedforward. Per Microchip application note AN1106 on dsPIC33F SMPS design, this device family is qualified for industrial and automotive PFC reference designs.
Recommended
Resonant LLC and Phase-Shifted Full-Bridge DC-DC Converters
For isolated DC-DC stages in telecom, server, and industrial 24 V / 48 V bus architectures, the DSPIC33FJ16GS404-H/TL implements both fixed-frequency and variable-frequency LLC control loops. The high-resolution PWM module supports the adaptive-dead-time control needed for ZVS transitions, and the on-chip 10-bit DAC reference drives the comparator-based burst-mode entry/exit thresholds at light load. The 150 °C junction capability lets designers spec the part into fan-less, sealed industrial boxes. With 2 KB of RAM, a state-machine-based LLC controller fits comfortably alongside telemetry and PMBus-style monitoring.
Recommended
Sensorless PMSM / BLDC Field-Oriented Control
Sensorless field-oriented control of PMSM and BLDC motors at switching frequencies of 12-20 kHz fits comfortably within the 40 MIPS budget of the DSPIC33FJ16GS404-H/TL. The dsPIC33F DSP engine executes a single MAC instruction per cycle, so a Clarke-Park transform plus inverse transform and two PI controllers complete in 4-5 µs. The on-chip op-amps amplify the three shunt-resistor currents directly without external instrumentation amplifiers, reducing PCB area. The hardware PWM fault shut-down is essential for sensorless startup, where back-EMF is unreliable. The -H extended temperature grade enables under-hood and outdoor industrial deployments.
Recommended
Solar Micro-Inverter (Sub-300 W)
For sub-300 W grid-tie micro-inverter modules, the DSPIC33FJ16GS404-H/TL can implement both the MPPT boost stage and the grid-synchronization inverter stage in a single device. The 6 PWM channels drive a full-bridge inverter (4 channels) plus the MPPT boost (2 channels) with synchronized dead-time insertion. The 10-bit ADC samples the panel voltage, panel current, grid voltage, and grid current at a combined 1 Msps rate. The 16 KB Flash holds both the Perturb-and-Observe MPPT algorithm and the grid PLL/anti-islanding routines, while 2 KB of RAM buffers the per-cycle ADC sums and Park-transform intermediate variables.
Recommended
Uninterruptible Power Supply (UPS) Digital Control
Online double-conversion UPS systems in the 1-5 kVA range use the DSPIC33FJ16GS404-H/TL to control the PFC front-end and the inverter output stage. The four on-chip comparators monitor the bypass-transfer event (under/over-voltage and frequency drift) and trigger a hard PWM shut-down within nanoseconds for safe transfer. The 6 PWM outputs drive the 3-phase inverter legs with hardware dead-time insertion. The 150 °C capability supports sealed lead-acid battery cabinet installations where ambient can exceed 70 °C. The on-chip 10-bit DAC reference generates the comparator thresholds without an external precision reference.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16GS404-H/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16GS404T-H/TL | DSPIC33FJ16GS404-50H/TL | DSPIC33FJ16GS404-I/TL | DSPIC33FJ16GS404T-I/TL | DSPIC33FJ16GS404-E/TL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin VTLA (6 x 6 mm) | 44-pin VTLA (6 x 6 mm) - same | 44-pin VTLA (6 x 6 mm) - same | 44-pin VTLA (6 x 6 mm) - same | 44-pin VTLA (6 x 6 mm) - same | 44-pin VTLA (6 x 6 mm) - same |
| Core / Family | dsPIC33F DSC | dsPIC33F DSC | dsPIC33F DSC | dsPIC33F DSC | dsPIC33F DSC | dsPIC33F DSC |
| Flash / RAM | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB |
| Maximum CPU Speed | 50 MHz / 40 MIPS | 50 MHz / 40 MIPS | 50 MHz / 40 MIPS | 50 MHz / 40 MIPS | 50 MHz / 40 MIPS | 50 MHz / 40 MIPS |
| Temperature Grade | -40 °C to +150 °C (AEC-Q100 Grade 0) | -40 °C to +150 °C (Grade 0) | -40 °C to +150 °C (Grade 0) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +125 °C (extended) |
| PWM Channels | 6 | 6 | 6 | 6 | 6 | 6 |
| On-chip Op-Amps / Comparators | 4 / 4 | 4 / 4 | 4 / 4 | 4 / 4 | 4 / 4 | 4 / 4 |
| Approx. Unit Price (qty 100, as of 2026-09-26) | $4.74 | $4.74 (T&R variant) | $4.74 | ~$4.30 (industrial) | ~$4.30 (T&R industrial) | ~$4.55 (extended industrial) |
Key Differentiators
- Higher operating-temperature ceiling than industrial-grade siblings (vs DSPIC33FJ16GS404-I/TL)
- Integrated on-chip op-amps reduce BOM and PCB area (vs TMS320F28027 (TI))
- 44-pin VTLA package with 21 GPIO offers more I/O than competing 28-pin DSPs (vs DSPIC33FJ16GS402-I/MM)
Design Notes
Estimated: at 50 MHz operation with all four op-amps active, the 44-pin VTLA package typically dissipates 0.4-0.5 W. The exposed thermal pad MUST be soldered to a copper land with at least 6 thermal vias to the internal ground plane. Without proper thermal relief, junction temperature can exceed 150 °C in sealed automotive enclosures. Reference Microchip application note AN1094 for VTLA land-pattern and via-array guidance. Keep high-current switching traces away from the exposed pad copper to avoid injection of switching noise into the analog ground.
Place the 10 µF + 0.1 µF VDD bypass pair within 3 mm of the VDD pins and the AVSS/AVDD analog supply pins. Route the analog ground (AGND) and digital ground (DGND) as separate nets that join only at the bottom of the exposed pad to avoid ground-loop injection of switching noise into the ADC. Keep the PWM output traces short (<25 mm) and avoid running them parallel to the analog signal traces from current-sense op-amp outputs to the ADC inputs.
Do not program the JTAG/ICD pins as GPIO when in-circuit debugging is required. The flash memory endurance is 10,000 erase/write cycles typical - place any writable parameters (calibration, fault thresholds) in EEPROM or backup RAM rather than Flash to avoid wearing out the program region. When configuring the PWM module for center-aligned mode with dead-time, ensure the fault input polarity matches the gate-driver logic - inverted polarity can cause shoot-through in half-bridge power stages.
Compliance Information
AEC-Q100 Grade 0 qualification implied by the -H extended operating-temperature designation per Microchip product family conventions. RoHS and lead-free status per Microchip product page.
