ADP1031ACPZ-2 - Isolated PMU with 7 Digital Isolators | Analog Devices
MPN: ADP1031ACPZ-2 ✓ Hoạt độngADP1031ACPZ-2 Tóm tắt
An isolated PMU is a power management IC that combines isolated DC-DC conversion with digital isolation in a single package, eliminating the need for separate isolated power supplies and digital isolators. It sits within the power management IC hierarchy, specifically under isolated power converters, and is essential for systems that require signal and power isolation for safety, noise immunity, or ground loop elimination.
Key features of the ADP1031ACPZ-2 include a wide input voltage range, three isolated outputs (one flyback, one inverting, one buck), and seven digital isolator channels with data rates up to 100 kbps. The device operates over the industrial temperature range of -40°C to +125°C and is available in a 41-lead LFCSP (9x7 mm) package. The ADP1031ACPZ-2 variant specifically provides a 5.0V output on the buck regulator, as indicated by the '2' suffix.
The ADP1031 uses a high-frequency flyback architecture with integrated power switches, achieving high efficiency and small form factor. The digital isolators use iCoupler technology, providing reliable isolation up to with low propagation delay. The device includes soft-start, overcurrent protection, and thermal shutdown for robust operation.
Typical applications include industrial fieldbus systems, programmable logic controllers (PLCs), isolated sensor interfaces, and motor drive control circuits. The ADP1031ACPZ-2 is particularly suited for systems requiring isolated SPI communication and multiple isolated power rails, such as data acquisition systems and industrial automation.
When designing with this device, ensure proper PCB layout for isolation barrier spacing and use recommended transformer and capacitor values from the datasheet. The input supply should be decoupled with low-ESR ceramic capacitors, and the isolated outputs should be filtered to meet ripple requirements.
Bộ thay thế dễ dàng lắp đặt cho ADP1031ACPZ-2 — 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 ADP1031ACPZ-2 (cùng hình factor và footprint).
ADP1031ACPZ-2-R7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADP1031ACPZ-1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADP1031ACPZ-4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADP1031ACPZ-3-R7
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADP1031ACPZ-5
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADP1031ACPZ-2 Tỷ lệ tối đa & tính chất điện
| Output Voltage (Buck) | 5.0 V |
| Number of Digital Isolators | 7 |
| SPI Isolator Channels | 4 |
| Tốc độ dữ liệu | 100 kbps |
| Khoảng nhiệt độ hoạt động | -40°C to +125°C |
| Hộp | 41-LFCSP (9x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Product Category | Power Management Specialized - PMIC |
Cấu hình chân ADP1031ACPZ-2
| Chân 1 | VIN — Input supply voltage |
| Chân 2 | GND — Ground |
| Chân 3 | VOUT1 — Flyback output |
| Chân 4 | VOUT2 — Inverting output |
| Chân 5 | VOUT3 — Buck output (5.0V) |
| Chân 6 | ISO_GND — Isolated ground |
| Chân 7 | SPI_CLK — SPI clock input |
| Chân 8 | SPI_MOSI — SPI data input |
| Chân 9 | SPI_MISO — SPI data output |
| Chân 10 | SPI_CS — SPI chip select |
| Chân 11 | GPIO1 — General-purpose digital isolator channel 1 |
| Chân 12 | GPIO2 — General-purpose digital isolator channel 2 |
| Chân 13 | GPIO3 — General-purpose digital isolator channel 3 |
| Chân 14 | EN — Enable pin |
| Chân 15 | NC — No connect |
Ứng dụng tiêu biểu
ADP1031ACPZ-2 phù hợp cho 6 Áp dụngs: Industrial Fieldbus Systems, Programmable Logic Controllers (PLCs), Isolated Sensor Interfaces, Motor Drive Control, Data Acquisition Systems, Isolated SPI Communication.
Industrial Fieldbus Systems
The ADP1031ACPZ-2 provides isolated power and digital isolation for fieldbus interfaces such as PROFIBUS and CAN. Its three isolated power rails (flyback, inverting, buck) can supply the transceiver, microcontroller, and isolated side circuitry. The integrated digital isolators (including SPI channels) enable isolated SPI communication between the host and fieldbus controller. With a 5.0V buck output, it can directly power logic-level devices. The wide temperature range (-40°C to +125°C) ensures reliable operation in harsh industrial environments. The high isolation voltage (as per datasheet) protects against ground potential differences and noise.
Được đề xuất
Programmable Logic Controllers (PLCs)
In PLCs, the ADP1031ACPZ-2 isolates the I/O modules from the main controller, providing clean power rails and digital isolation for sensor/actuator interfaces. The flyback regulator can generate a high-voltage rail for analog front-ends, the inverting regulator can create a negative rail for bipolar ADCs, and the buck regulator provides a 5.0V logic rail. The seven digital isolator channels handle SPI and GPIO signals, ensuring noise immunity and safety. The device's integrated approach reduces board space and component count, improving reliability. Its industrial temperature range and protection features make it suitable for factory automation.
Được đề xuất
Isolated Sensor Interfaces
The ADP1031ACPZ-2 is ideal for isolated sensor interfaces in data acquisition systems. It provides isolated power to the sensor and ADC, while the digital isolators transmit the sensor data across the isolation barrier. The inverting regulator can generate a negative supply for sensors requiring bipolar operation, and the buck regulator provides a stable 5.0V for the ADC. The SPI isolator channels enable high-speed communication with the host. The device's low noise and high isolation ensure accurate measurement in noisy industrial environments. Its compact LFCSP package fits space-constrained designs.
Được đề xuất
Motor Drive Control
In motor drive systems, the ADP1031ACPZ-2 provides isolated power for gate drivers and control electronics, while the digital isolators transmit PWM and fault signals across the isolation barrier. The flyback regulator can generate a high-side supply for IGBT/MOSFET gate drivers, the inverting regulator can create a negative rail for current sensing, and the buck regulator supplies the microcontroller. The integrated isolation eliminates ground loops and improves safety. The device's high temperature rating and protection features ensure reliable operation in motor control cabinets. Its small footprint simplifies PCB layout.
Được đề xuất
Data Acquisition Systems
The ADP1031ACPZ-2 is well-suited for isolated data acquisition systems where multiple isolated power rails and digital isolation are required. It can power analog front-ends, ADCs, and digital logic while providing isolation for SPI and control signals. The buck output (5.0V) can supply the ADC's digital supply, the inverting output can provide a negative rail for bipolar input ranges, and the flyback output can generate a higher voltage for sensor excitation. The integrated digital isolators reduce component count and improve signal integrity. Its wide temperature range supports industrial DAQ applications.
Được đề xuất
Isolated SPI Communication
The ADP1031ACPZ-2 includes four high-speed SPI digital isolator channels, making it ideal for isolated SPI communication between microcontrollers and peripheral devices such as ADCs, DACs, or EEPROMs. The integrated power converters provide isolated power to the peripheral side, eliminating the need for separate isolated supplies. The 5.0V buck output can power the peripheral logic, while the flyback and inverting outputs can supply analog circuits. The device ensures reliable data transfer across the isolation barrier with low propagation delay. Its compact package and integrated approach simplify design and reduce BOM cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADP1031ACPZ-2 — 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 | ADP1031ACPZ-2-R7 | ADP1031ACPZ-1 | ADP1031ACPZ-4 |
|---|---|---|---|---|
| Package | 41-LFCSP (9x7 mm) | 41-LFCSP (9x7 mm) - same | 41-LFCSP (9x7 mm) - same | 41-LFCSP (9x7 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Digital Isolators | 7 | 7 | 7 | 7 |
| Data Rate | 100 kbps | 100 kbps | 100 kbps | 100 kbps |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Packaging | Tray | Tape & Reel | Tray | Tray |
| Lifecycle Status | Active | Active | Active | Active |
Bảo phân biệt quan trọng
- Integrated isolated PMU with three power rails and seven digital isolators (vsADP1031ACPZ-1)
- Tape-and-reel packaging option available (vsADP1031ACPZ-2 (tray))
- High-reliability industrial temperature range (vsADP1031ACPZ-4)
Ghi chú thiết kế
For the ADP1031ACPZ-2, maintain proper isolation barrier spacing on the PCB to meet safety standards. Place the transformer and isolation components with adequate creepage and clearance distances. Use a solid ground plane under the primary side and separate the isolated ground plane. Refer to the ADP1031 datasheet for recommended layout guidelines.
Decouple the input supply with a low-ESR ceramic capacitor (e.g., 10uF) close to the VIN pin. For the isolated outputs, use the recommended output capacitors and filter inductors as specified in the datasheet to minimize ripple. The buck output (5.0V) should have a 10uF ceramic capacitor for stability.
The ADP1031ACPZ-2 in the 41-LFCSP package has an exposed pad for thermal dissipation. Solder the exposed pad to a copper pour on the PCB to improve heat transfer. Ensure adequate thermal vias are used to connect to inner ground planes. The device operates up to +125°C, so consider ambient temperature and power dissipation in your design.
Thông tin tuân thủ
RoHS compliance indicated by distributor listings. Other compliance data not explicitly provided in the verified data.
