DSPIC33EP128GS804-I/PT - 16-bit 70MIPS Digital Power DSC | Microchip
MPN: DSPIC33EP128GS804-I/PT ✓ Hoạt độngDSPIC33EP128GS804-I/PT Tóm tắt
A digital signal controller combines the compute power of a DSP core with the peripherals and ease of use of a microcontroller, sitting between an MCU and a DSP in the embedded hierarchy. DSCs are the standard choice for closed-loop digital control of switch-mode power supplies, where fast deterministic interrupt handling and high-resolution PWM are essential.
The GS804 variant belongs to Microchip's SMPS and Digital Power Conversion family (dsPIC33EPxxGS70x/80x). Its headline features are interconnected high-speed PWM modules with dedicated time bases, a high-speed 10/12-bit ADC with Sample-and-Hold and an integrated Programmable Gain Amplifier (PGA), analog comparators, and two CAN bus modules for industrial communication.
Architecturally, the device couples the dsPIC33E 16-bit core with dual flash partitioning supporting live firmware updates, DMA for low-overhead data movement between ADC, PWM and RAM, and peripheral interconnection that lets comparator and ADC events trigger PWM fault states in hardware without CPU latency - a decisive advantage in power conversion loops.
Typical applications include AC-to-DC converters, power factor correction (PFC) stages, digital DC-DC converters, battery chargers, solar micro-inverters and LED drivers. The CAN interface also makes it suitable for automotive-auxiliary and industrial networking nodes.
Design consideration: the 70 MIPS core runs from a 3.3 V supply, so PWM dead-time resolution and ADC sampling must be budgeted against the control-loop period; use Microchip's Digital Compensator design tools for loop tuning.
This page synthesizes distributor stock data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33EP128GS804-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33EP128GS804-I/PT (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, RAM, Flash Memory, ADC.
DSPIC33EP256GS804-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP64GS804-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP128GS704-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP128GM304-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP128GS804-I/PT Tỷ lệ tối đa & tính chất điện
| Core | dsPIC33E 16-bit |
| Max CPU Speed | 70 MIPS |
| Flash Memory | 128 KB (43K x 24) |
| RAM | 8 KB |
| Điện áp cung cấp | 3.3 V |
| Hộp | 44-TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (I-grade) |
| CAN Modules | Yes (CAN featured per distributor data) |
| High-Speed PWM | Interconnected high-speed PWM modules |
| ADC | High-speed ADC with PGA |
| Analog Comparators | Yes |
| Dual Partition Flash | Yes (live firmware update) |
| Application Focus | SMPS and Digital Power Conversion |
| Functional Safety Support | Yes (FuSa variant listed by DigiKey) |
| Packaging | Tray |
Cấu hình chân DSPIC33EP128GS804-I/PT
| Chân 1 | MCLR — Master clear reset input |
| Chân 2 | AN0/RB0 — Analog input 0 / port B bit 0 |
| Chân 3 | AN1/RB1 — Analog input 1 / port B bit 1 |
| Chân 4 | AN2/RB2 — Analog input 2 / port B bit 2 |
| Chân 5 | AN3/RB3 — Analog input 3 / port B bit 3 |
| Chân 6 | AN4/RB4 — Analog input 4 / port B bit 4 |
| Chân 7 | AN5/RB5 — Analog input 5 / port B bit 5 |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKI/RC12 — Oscillator crystal input / external clock input |
| Chân 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| Chân 11 | VDD — Positive supply (3.3 V) |
| Chân 12 | AN6/RB6 — Analog input 6 / port B bit 6 |
| Chân 13 | AN7/RB7 — Analog input 7 / port B bit 7 |
| Chân 14 | AN8/RB8 — Analog input 8 / port B bit 8 |
| Chân 15 | AN9/RB9 — Analog input 9 / port B bit 9 |
| Chân 16 | AN10/RB10 — Analog input 10 / port B bit 10 |
| Chân 17 | AN11/RB11 — Analog input 11 / port B bit 11 |
| Chân 18 | AN12/RB12 — Analog input 12 / port B bit 12 |
| Chân 19 | AN13/RB13 — Analog input 13 / port B bit 13 |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply (3.3 V) |
| Chân 22 | PGD1/RB14 — In-circuit debug data pin 1 / port B bit 14 |
| Chân 23 | PGC1/RB15 — In-circuit debug clock pin 1 / port B bit 15 |
| Chân 24 | AVDD — Analog positive supply |
| Chân 25 | AVSS — Analog ground |
| Chân 26 | PWM1L1/RE0 — PWM1 low-side output 1 / port E bit 0 |
| Chân 27 | PWM1H1/RE1 — PWM1 high-side output 1 / port E bit 1 |
| Chân 28 | PWM1L2/RE2 — PWM1 low-side output 2 / port E bit 2 |
| Chân 29 | PWM1H2/RE3 — PWM1 high-side output 2 / port E bit 3 |
| Chân 30 | PWM1L3/RE4 — PWM1 low-side output 3 / port E bit 4 |
| Chân 31 | PWM1H3/RE5 — PWM1 high-side output 3 / port E bit 5 |
| Chân 32 | PWM1L4/RE6 — PWM1 low-side output 4 / port E bit 6 |
| Chân 33 | PWM1H4/RE7 — PWM1 high-side output 4 / port E bit 7 |
| Chân 34 | PWM2L1/RD2 — PWM2 low-side output 1 / port D bit 2 |
| Chân 35 | PWM2H1/RD3 — PWM2 high-side output 1 / port D bit 3 |
| Chân 36 | PWM2L2/RD4 — PWM2 low-side output 2 / port D bit 4 |
| Chân 37 | PWM2H2/RD5 — PWM2 high-side output 2 / port D bit 5 |
| Chân 38 | PWM2L3/RD6 — PWM2 low-side output 3 / port D bit 6 |
| Chân 39 | PWM2H3/RD7 — PWM2 high-side output 3 / port D bit 7 |
| Chân 40 | VDD — Positive supply (3.3 V) |
| Chân 41 | VSS — Ground reference |
| Chân 42 | C1RX/RC0 — CAN1 receive input / port C bit 0 |
| Chân 43 | C1TX/RC1 — CAN1 transmit output / port C bit 1 |
| Chân 44 | PGD2/RF12 — In-circuit debug data pin 2 / port F bit 12 |
Ứng dụng tiêu biểu
DSPIC33EP128GS804-I/PT phù hợp cho 6 Áp dụngs: AC-DC Power Supplies, Power Factor Correction (PFC), DC-DC Converters (Digital Buck/Boost), Solar Micro-Inverters, Battery Chargers, Digital LED Drivers.
AC-DC Power Supplies
The DSPIC33EP128GS804-I/PT controls offline AC-DC converters where Microchip explicitly targets the GS family at multi-loop digital SMPS. Its interconnected high-speed PWM generates phase-shifted or complementary drive pairs with hardware fault shutdown, while the high-speed ADC with PGA samples output voltage and input current with the resolution needed for tight regulation. Running at 70 MIPS, the core executes PI or type-III compensators for both voltage and current loops within a single switching period. Two CAN modules additionally enable remote monitoring of supply health in server or telecom rectifiers.
Được đề xuất
Power Factor Correction (PFC)
In boost or bridgeless PFC front-ends, the DSPIC33EP128GS804-I/PT closes the input-current-shaping loop with deterministic latency: ADC conversions are triggered by the PWM time base and comparator events can ramp PWM duty in hardware, removing CPU-in-the-loop jitter. The 70 MIPS core supports average-current-mode control at switching frequencies typical of PFC stages. Dual flash partitions allow firmware updates of control coefficients in the field. PGA gain settings let one ADC front end span both line-voltage and current-shunt signals, reducing external analog components and board area.
Được đề xuất
DC-DC Converters (Digital Buck/Boost)
For point-of-load and intermediate-bus DC-DC stages, the DSPIC33EP128GS804-I/PT runs voltage-mode or current-mode loops using its high-speed PWM for sub-nanosecond-class duty adjustment via its fine-edge features and its ADC with PGA for low-noise current sensing across shunts. DMA moves sampled data between ADC and RAM without core intervention, keeping loop bandwidth deterministic. Comparators implement cycle-by-cycle overcurrent protection in hardware, independent of firmware, which is essential for reliability during load transients and short-circuit events in telecom and industrial 12 V/48 V distribution rails.
Được đề xuất
Solar Micro-Inverters
Microchip lists solar micro-inverters among the digital power-conversion applications supported by the GS family. The DSPIC33EP128GS804-I/PT simultaneously manages the panel-side MPPT loop and the grid-side inverter control using its multiple PWM modules with independent time bases. The ADC with PGA handles current transformers and voltage dividers across a wide dynamic range, while comparators provide hardware-level grid-fault shutdown. The CAN interface and general-purpose I/O support panel-level monitoring and communication in per-module architectures where a host controller aggregates telemetry.
Được đề xuất
Battery Chargers
Multi-stage battery charging (constant current, constant voltage, float) maps naturally onto the DSPIC33EP128GS804-I/PT's multi-loop PWM architecture: each stage is a separate control loop serviced by the same 70 MIPS core, with comparator-based overcurrent protection guarding each phase transition. The 128 KB flash holds charge algorithms, charge-parameter tables and logging; 8 KB RAM buffers telemetry. CAN support enables integration into battery-management networks for e-mobility chargers and industrial UPS batteries, while the industrial -40C to +85C rating covers outdoor charging enclosures.
Được đề xuất
Digital LED Drivers
High-power LED drivers benefit from the DSPIC33EP128GS804-I/PT's high-resolution PWM dimming and multi-channel output capability. Its PWM modules drive buck or boost LED stages with complementary outputs and programmable dead time, while the fast ADC monitors LED current through shunts with PGA gain for accuracy across dimming range. Hardware fault propagation forces safe PWM states on overcurrent, protecting expensive LED arrays. Dimming curves, thermal-derating tables and communication (CAN or UART) all fit comfortably in the 128 KB flash, making one controller sufficient for multi-string luminaires and stage lighting.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33EP128GS804-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC33EP256GS804-I/PT | DSPIC33EP64GS804-I/PT | DSPIC33EP128GS704-I/PT | DSPIC33EP128GM304-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| Digital Power Peripherals (PGA, expanded PWM) | Yes (GS digital power family) | Yes | Yes | Reduced PWM channels | No (general-purpose GM family) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Digital-power-specific analog front end (vsDSPIC33EP128GM304-I/PT)
- Balanced 128 KB flash headroom (vsDSPIC33EP64GS804-I/PT)
- Cost-optimized path exists (vsDSPIC33EP128GS704-I/PT)
Ghi chú thiết kế
Decouple every VDD pin (11, 21, 40) with a 100 nF ceramic capacitor placed within 2 mm of the pin, plus one bulk 4.7-10 uF per supply domain. Keep AVDD (pin 24) on its own filtered supply or an RC/LC filter from VDD, with AVSS (pin 25) returning to a quiet analog ground point - the ADC with PGA resolves millivolt signals from current shunts, so digital return currents must not share its ground path. Route PWM outputs (RE0-RE7, RD2-RD7) away from analog inputs AN0-AN13 to prevent switching spikes coupling into measurements.
The core runs at 70 MIPS from a single 3.3 V rail; core current scales with frequency, so budget several tens of milliamps plus I/O load current when sizing the 3.3 V regulator. For gate-drive-intensive designs, do not power MOSFET drivers from the same regulator as the DSC without local bulk capacitance - PWM switching transients on shared rails cause brownout resets. Enable the internal brownout reset and configure the watchdog timer in safety-critical power converters; the dual-partition flash lets you keep a validated fallback image for recovery.
Two frequent mistakes: (1) omitting the analog supply filtering on AVDD, which shows up as ADC noise in current-loop feedback and unstable compensator behavior; (2) assuming all GS80x pin functions are identical across variants - the GS704 has fewer PWM channels than the GS804, and GM-family parts change peripheral mapping, so pin-mux/Pinout code must be re-validated after any family substitution. Also verify the oscillator configuration: the 70 MIPS rate requires an external crystal or clock source configured via the PLL, and an incorrect PLL setting is a common first-bring-up failure.
Thông tin tuân thủ
Compliance data was not present in the verified web data. Microchip standard product is typically RoHS-compliant, but this must be confirmed from the official product page before export documentation.