DSPIC33EP128GS804-I/PT - 16-bit 70MIPS Digital Power DSC | Microchip
料号： DSPIC33EP128GS804-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.25 | $62.50 |
| 100 | $5.55 | $555.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.45 | $4,450.00 |
DSPIC33EP128GS804-I/PT 概述
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.
直接替换替代料： DSPIC33EP128GS804-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DSPIC33EP128GS804-I/PT （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, RAM, Flash Memory, ADC.
快速对比工具——选择替代料号进行并排对比：
DSPIC33EP256GS804-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33EP64GS804-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.2 / 个
查看数据手册 →DSPIC33EP128GS704-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.2 / 个
查看数据手册 →DSPIC33EP128GM304-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.2 / 个
查看数据手册 →DSPIC33EP128GS804-I/PT 最大额定值与电气特性
| Core | dsPIC33E 16-bit |
| Max CPU Speed | 70 MIPS |
| Flash Memory | 128 KB (43K x 24) |
| RAM | 8 KB |
| 电源电压 | 3.3 V |
| 封装 | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -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 |
DSPIC33EP128GS804-I/PT 引脚配置
| 引脚 1 | MCLR — Master clear reset input |
| 引脚 2 | AN0/RB0 — Analog input 0 / port B bit 0 |
| 引脚 3 | AN1/RB1 — Analog input 1 / port B bit 1 |
| 引脚 4 | AN2/RB2 — Analog input 2 / port B bit 2 |
| 引脚 5 | AN3/RB3 — Analog input 3 / port B bit 3 |
| 引脚 6 | AN4/RB4 — Analog input 4 / port B bit 4 |
| 引脚 7 | AN5/RB5 — Analog input 5 / port B bit 5 |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/CLKI/RC12 — Oscillator crystal input / external clock input |
| 引脚 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| 引脚 11 | VDD — Positive supply (3.3 V) |
| 引脚 12 | AN6/RB6 — Analog input 6 / port B bit 6 |
| 引脚 13 | AN7/RB7 — Analog input 7 / port B bit 7 |
| 引脚 14 | AN8/RB8 — Analog input 8 / port B bit 8 |
| 引脚 15 | AN9/RB9 — Analog input 9 / port B bit 9 |
| 引脚 16 | AN10/RB10 — Analog input 10 / port B bit 10 |
| 引脚 17 | AN11/RB11 — Analog input 11 / port B bit 11 |
| 引脚 18 | AN12/RB12 — Analog input 12 / port B bit 12 |
| 引脚 19 | AN13/RB13 — Analog input 13 / port B bit 13 |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | VDD — Positive supply (3.3 V) |
| 引脚 22 | PGD1/RB14 — In-circuit debug data pin 1 / port B bit 14 |
| 引脚 23 | PGC1/RB15 — In-circuit debug clock pin 1 / port B bit 15 |
| 引脚 24 | AVDD — Analog positive supply |
| 引脚 25 | AVSS — Analog ground |
| 引脚 26 | PWM1L1/RE0 — PWM1 low-side output 1 / port E bit 0 |
| 引脚 27 | PWM1H1/RE1 — PWM1 high-side output 1 / port E bit 1 |
| 引脚 28 | PWM1L2/RE2 — PWM1 low-side output 2 / port E bit 2 |
| 引脚 29 | PWM1H2/RE3 — PWM1 high-side output 2 / port E bit 3 |
| 引脚 30 | PWM1L3/RE4 — PWM1 low-side output 3 / port E bit 4 |
| 引脚 31 | PWM1H3/RE5 — PWM1 high-side output 3 / port E bit 5 |
| 引脚 32 | PWM1L4/RE6 — PWM1 low-side output 4 / port E bit 6 |
| 引脚 33 | PWM1H4/RE7 — PWM1 high-side output 4 / port E bit 7 |
| 引脚 34 | PWM2L1/RD2 — PWM2 low-side output 1 / port D bit 2 |
| 引脚 35 | PWM2H1/RD3 — PWM2 high-side output 1 / port D bit 3 |
| 引脚 36 | PWM2L2/RD4 — PWM2 low-side output 2 / port D bit 4 |
| 引脚 37 | PWM2H2/RD5 — PWM2 high-side output 2 / port D bit 5 |
| 引脚 38 | PWM2L3/RD6 — PWM2 low-side output 3 / port D bit 6 |
| 引脚 39 | PWM2H3/RD7 — PWM2 high-side output 3 / port D bit 7 |
| 引脚 40 | VDD — Positive supply (3.3 V) |
| 引脚 41 | VSS — Ground reference |
| 引脚 42 | C1RX/RC0 — CAN1 receive input / port C bit 0 |
| 引脚 43 | C1TX/RC1 — CAN1 transmit output / port C bit 1 |
| 引脚 44 | PGD2/RF12 — In-circuit debug data pin 2 / port F bit 12 |
典型应用
DSPIC33EP128GS804-I/PT 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： DSPIC33EP128GS804-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Digital-power-specific analog front end （对比 DSPIC33EP128GM304-I/PT)
- Balanced 128 KB flash headroom （对比 DSPIC33EP64GS804-I/PT)
- Cost-optimized path exists （对比 DSPIC33EP128GS704-I/PT)
设计说明
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.
合规信息
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.