DSPIC33FJ16GS502-H/MM - 16-bit DSC, 16KB Flash, 40 MIPS | Microchip
MPN： DSPIC33FJ16GS502-H/MM ✓ 啟用中DSPIC33FJ16GS502-H/MM 概覽
A Digital Signal Controller (DSC) is a hybrid device class that combines a microcontroller (MCU) deterministic real-time control peripheral set with a digital signal processor (DSP) computational engine. DSCs sit hierarchically between microcontrollers (simpler control) and full DSP processors (heavier signal-processing throughput), and within power management they bridge analog SMPS controllers and software-defined digital control loops. The DSPIC33FJ16GS502-H/MM is part of Microchip's SMPS-targeted dsPIC33F GS family, deliberately optimized for digital switch-mode power supply (SMPS), AC-to-DC, DC-to-DC, and Power Factor Correction (PFC) topologies.
Key features include high-speed PWM with complementary outputs and programmable dead time, high-speed 10-bit or 12-bit ADCs with multi-sample-and-hold capable of synchronizing to the PWM, fast analog comparators for cycle-by-cycle current limiting, 21 general-purpose I/O, five timers, JTAG boundary scan, and support for in-circuit and in-application programming. The -H temperature grade extends operation to 150°C junction (automotive/extended industrial grade). The QFN-28 package provides a low thermal-resistance exposed pad, allowing continuous high-current switching drive at full SMPS load.
Typical applications span digital telecom DC-DC converters, quarter-brick intermediate bus architectures, PFC boost stages, AC-DC adapters, digital lighting ballasts, and motor control. The high-speed PWM, ADC, and comparator trio is specifically arranged for multi-loop SMPS feedback, with sampling edges programmable to align with PWM edges for sub-microsecond control loop latency.
When designing, place decoupling within 6 mm of each VDD/VSS pair, route analog AVSS/AVDD separately from digital grounds, and follow Microchip's family BSDL/symbol files for JTAG chain layout. Always configure the PWM fault input and current sense comparator before enabling outputs to avoid inrush damage.
This page synthesizes distributor pricing, drop-in temperature/speed-grade alternatives, and practical PCB design notes not collected in the manufacturer datasheet alone.
直接替換替代品，適用於 DSPIC33FJ16GS502-H/MM — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33FJ16GS502-H/MM （相同外形與佔位） — 差異在於 ADC, Package, Core Architecture, Program Memory (Flash), Maximum CPU Speed.
DSPIC33FJ16GS502-I/MM
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ16GS502-E/MM
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ16GS502-50H/MM
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ16GS402-I/MM
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ16GS502-H/MM 最大額定值與電氣特性
| Core Architecture | dsPIC33F (16-bit DSC, Harvard, DSP-enhanced) |
| Maximum CPU Speed | 40 MIPS (50 MHz max input clock) |
| Program Memory (Flash) | 16 KB (16K x 8) |
| RAM | 2 KB |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Timers | 5 |
| PWM Channels | High-Speed PWM with complementary outputs and programmable dead time |
| ADC | High-speed ADC with multi-sample/hold |
| Comparators | High-speed analog comparators for cycle-by-cycle current limit |
| Temperature Grade (H) | -40C to +150C (extended/automotive junction) |
| 封裝 | QFN-S 28-pin, 6 x 6 mm, plastic with exposed pad |
| 安裝類型 | Surface Mount |
| Debug / Programming | JTAG IEEE 1149.2 + In-Circuit Serial Programming (ICSP) |
| RoHS 狀態 | Compliant |
DSPIC33FJ16GS502-H/MM 腳位配置
| 腳位 1 | MCLR — Master Clear (reset) input |
| 腳位 2 | RA0 — Port A bit 0 / analog input |
| 腳位 3 | RA1 — Port A bit 1 / analog input |
| 腳位 4 | RA2 — Port A bit 2 / analog input |
| 腳位 5 | RB0 — Port B bit 0 / PWM |
| 腳位 6 | RB9 — Port B bit 9 / PWM |
| 腳位 7 | RB10 — Port B bit 10 / PWM |
| 腳位 8 | VSS1 — Digital ground |
| 腳位 9 | RB1 — Port B bit 1 / PWM |
| 腳位 10 | RB2 — Port B bit 2 / PWM |
| 腳位 11 | RB3 — Port B bit 3 / PWM |
| 腳位 12 | RB4 — Port B bit 4 / comparator input |
| 腳位 13 | VDD1 — Digital supply 3.3 V |
| 腳位 14 | RB8 — Port B bit 8 / PWM |
| 腳位 15 | RB15 — Port B bit 15 / PWM |
| 腳位 16 | RB5 — Port B bit 5 / comparator input |
| 腳位 17 | RB6 — Port B bit 6 |
| 腳位 18 | RB7 — Port B bit 7 |
| 腳位 19 | VSS2 — Digital ground |
| 腳位 20 | VDD2 — Digital supply 3.3 V |
| 腳位 21 | AVSS — Analog ground |
| 腳位 22 | AVDD — Analog supply 3.3 V |
| 腳位 23 | RB11 — Port B bit 11 / PWM |
| 腳位 24 | RB12 — Port B bit 12 / PWM |
| 腳位 25 | RB13 — Port B bit 13 / PWM |
| 腳位 26 | RB14 — Port B bit 14 / PWM |
| 腳位 27 | OSC1 — Crystal oscillator input |
| 腳位 28 | OSC2 — Crystal oscillator output |
典型應用
DSPIC33FJ16GS502-H/MM 適用於 6 應用s: Digital Telecom DC-DC Converter, Power Factor Correction (PFC) Boost Stage, AC-DC Adapter (Digital Controlled), Quarter-Brick Intermediate Bus Architecture (IBA) Reference, Digital Lighting Ballast / LED Driver, BLDC / PMSM Motor Drive (FOC).
Digital Telecom DC-DC Converter
The DSPIC33FJ16GS502-H/MM's 40 MIPS dsPIC33F core executes continuous conduction mode (CCM) voltage-mode and average-current-mode control loops at 100-500 kHz switching frequencies commonly used in 48 V telecom intermediate bus architectures. The high-speed PWM with programmable dead time drives synchronous buck half-bridges with sub-100 ns resolution, and the 16-bit DSP engine runs type-II/III compensation networks without integer-overflow penalty. Placed between the 48 V input rail and downstream POL converters, the -H temperature grade sustains operation in fanless sealed bricks where ambient temperatures exceed 100°C. Pin-compatible migration to the DSPIC33FJ16GS502-50H/MM doubles CPU headroom if compensation math tightens.
推薦
Power Factor Correction (PFC) Boost Stage
Average-current-mode PFC requires the controller to multiply input voltage and current samples, compute the reference current, and modulate a boost switch at 50-100 kHz - all within one switching period. The DSPIC33FJ16GS502-H/MM's high-speed ADC with multi-sample-and-hold can sample inductor current and rectified line voltage at the PWM midpoint, eliminating edge-noise artifacts, and the analog comparator provides cycle-by-cycle overcurrent protection to satisfy IEC 61000-3-2 stress tests. The 16-bit MAC executes the sinusoidal reference multiply in single cycles, keeping THD below 5% at full load. -H grade supports the high thermal load of fanless 1-3 kW PFC stages.
推薦
AC-DC Adapter (Digital Controlled)
Replacing legacy analog controllers like the UCC28C42 with the DSPIC33FJ16GS502-H/MM enables firmware-defined soft-start, constant-current/constant-voltage (CC/CV) charging profiles, and adaptive valley skipping for light-load efficiency. The integrated 16-bit ADC samples output voltage and primary-side auxiliary winding simultaneously, while the high-speed comparator forces peak-current-mode transitions with deterministic timing. The 150°C junction rating supports the high internal ambient of enclosed adapters running at high line and full load. Pin-compatible DSPIC33FJ16GS502-I/MM can drop in for cost-sensitive consumer adapters.
推薦
Quarter-Brick Intermediate Bus Architecture (IBA) Reference
Microchip's published reference design for high-density quarter-brick DC-DC converters uses the DSPIC33FJ16GS502 family as the digital controller of the intermediate bus architecture (IBA), converting 48 V to 12 V at 30-40 A for downstream POL converters. The DSP engine runs DSP-based voltage-mode control with feed-forward, maintaining regulation across load steps despite IBA's narrow input range. The QFN-28 6x6 mm with exposed pad dissipates switching node losses into the inner copper layers, allowing 96% peak efficiency in a quarter-brick footprint. -H grade supports 70°C inlet / 95°C brick baseplate operation.
推薦
Digital Lighting Ballast / LED Driver
Programmable LED drivers using the DSPIC33FJ16GS502-H/MM can implement dimming curves (0-10 V, DALI, DMX) and constant-current regulation with the high-speed PWM driving a boost or buck topology. The 16-bit DSP performs logarithmic dimming math and color-mixing calculations for tunable-white or RGB fixtures, and the analog comparator protects against open-LED overvoltage. -H grade fits sealed high-bay industrial fixtures where the ballast compartment sees sustained 100°C+ ambient. Pin-compatible DSPIC33FJ16GS402-I/MM offers lower-cost entry for residential luminaires.
推薦
BLDC / PMSM Motor Drive (FOC)
Field-oriented control of BLDC/PMSM motors requires Clarke/Park transforms, inverse transforms, and an inverse-Park-modulated SVM output every PWM period - exactly the workload the dsPIC33F core is built for. The DSPIC33FJ16GS502-H/MM's 40 MIPS can drive sensorless FOC at 20 kHz PWM for small industrial pumps, fans, and e-mobility auxiliaries. The high-speed ADC samples two phase currents simultaneously, and the on-chip analog comparator provides hardware overcurrent protection independent of CPU latency. -H grade tolerates the high ambient of integrated motor/inverter enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33FJ16GS502-H/MM — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33FJ16GS502-I/MM | DSPIC33FJ16GS502-E/MM | DSPIC33FJ16GS502-50H/MM | DSPIC33FJ16GS402-I/MM |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-28 6x6 mm (MM) | QFN-28 6x6 mm (MM) - same | QFN-28 6x6 mm (MM) - same | QFN-28 6x6 mm (MM) - same | QFN-28 6x6 mm (MM) - same |
| Flash / RAM | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB | 16 KB / 2 KB (GS402 family) |
| Maximum CPU Speed | 40 MIPS (50 MHz max input) | 40 MIPS (50 MHz max input) | 40 MIPS (50 MHz max input) | 40 MIPS (50 MHz, 50 MHz speed grade) | 40 MIPS (50 MHz) |
| Temperature Grade | -40C to +150C (H grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +150C (H grade) | -40C to +85C (I grade) |
| I/O Pins | 21 | 21 | 21 | 21 | 21 (GS402 family) |
| 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 | 3.0 V to 3.6 V |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant |
主要差異化特點
- Extended / automotive 150°C junction temperature grade (對比DSPIC33FJ16GS502-I/MM)
- Higher speed grade option (50 MHz) in same footprint (對比DSPIC33FJ16GS502-E/MM)
- Optimized SMPS peripheral set (PWM + ADC + comparator) (對比DSPIC33FJ16GS402-I/MM (GS402 family))
設計說明
Place a 10 uF bulk + 0.1 uF ceramic decoupling capacitor pair within 6 mm of each VDD/VSS pin pair (1, 19/8, 13, 20), per the Microchip dsPIC33FJ16GS502 family datasheet. Use a separate ferrite bead between digital VDD and analog AVDD, and decouple AVSS/AVDD with their own 0.1 uF + 10 uF pair. AVDD must not exceed VDD by more than 0.3 V at any time to avoid latch-up.
Route PWM outputs and gate-drive traces away from analog sense traces; keep at least 3 mm spacing or use a guard ground trace between high-dV/dt PWM nodes and current-sense amplifier outputs. The QFN-28 exposed pad must be soldered to a continuous ground plane with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch) to the inner ground layer to keep junction temperature below 150°C under continuous high-side switching.
Use the high-speed ADC in tandem with the PWM module by triggering ADC conversion at the PWM midpoint (rather than at the PWM edge) to avoid sampling during MOSFET switching transitions. For cycle-by-cycle current limiting, configure one of the on-chip analog comparators to drive the PWM fault input directly - this guarantees hardware shutdown within one PWM cycle independent of CPU latency, satisfying SMPS safety requirements.
Do not leave unused comparator inputs floating - tie them to AVSS or a defined voltage, or the comparator may oscillate and inject noise into the ADC. Configure the JTAG/enable pins via the configuration bits at programming time, not at runtime, to avoid unintended resets. Always enable the watchdog timer in safety-critical SMPS firmware so a runaway control loop self-recovers within milliseconds.
合規資訊
RoHS-compliant per Microchip product page; H temperature grade supports -40C to +150C junction operation but the part is not formally AEC-Q100 qualified - consult Microchip automotive part numbers for AEC-Q100 needs.
