ADP1031ACPZ-1 - Isolated PMU with 3 Regulators | Analog Devices
料号： ADP1031ACPZ-1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.76 | $276.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.08 | $2,080.00 |
ADP1031ACPZ-1 概述
An isolated PMU is a power management IC that combines multiple power conversion stages with galvanic isolation, enabling safe and noise-free power transfer across an isolation barrier. It integrates the isolation components (such as transformers) and control circuitry into a single package, simplifying design and reducing board space. The ADP1031 belongs to the family of isolated power management units, which are essential in industrial automation, medical equipment, and communication systems where safety and noise immunity are critical.
Key features of the ADP1031ACPZ-1 include a wide input voltage range, high efficiency, and integrated isolation. The flyback regulator provides a regulated output, while the inverting and buck regulators offer additional rails with different polarities and voltage levels. The device also features overvoltage protection (OVP) on the inverting regulator, which monitors the FB3 pin and stops switching if the voltage falls below VFB3 by 10%, ensuring safe operation. The integrated SPI isolation channels eliminate the need for external digital isolators, reducing component count and system cost.
Technically, the ADP1031 uses a proprietary architecture that combines a primary-side controller with secondary-side regulation, achieving high efficiency and accurate output regulation. The device supports a wide range of output voltages and currents, making it versatile for various applications. The package is designed for excellent thermal performance, with an exposed pad for heat dissipation.
Typical applications include isolated data acquisition systems, industrial process control, programmable logic controllers (PLCs), and isolated sensor interfaces. The device is particularly suited for applications requiring multiple isolated power rails and high-speed data isolation, such as motor drives and smart grid equipment.
When designing with the ADP1031ACPZ-1, it is important to carefully select the external transformer and components to meet the required isolation and efficiency specifications. Proper PCB layout is essential to minimize noise and ensure reliable operation. The device also requires careful thermal management due to its power dissipation.
直接替换替代料： ADP1031ACPZ-1 ——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： ADP1031ACPZ-1 （相同外形与封装尺寸）.
快速对比工具——选择替代料号进行并排对比：
ADP1031ACPZ-1-R7
✅ 直接替换📋 参考替代料（不在目录中）
ADP1031ACPZ-3
✅ 直接替换📋 参考替代料（不在目录中）
ADP1031ACPZ-2
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.08 / 个
查看数据手册 →ADP1031ACPZ-4
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADP1031ACPZ-5
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADP1031ACPZ-1 最大额定值与电气特性
| Number of Regulators | 3 (flyback, inverting, buck) |
| SPI Isolation Channels | 4 |
| 封装 | 41-LFCSP (9x7 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
| AEC-Q100 Qualified | No |
| Lead-Free | Yes |
ADP1031ACPZ-1 引脚配置
| 引脚 1 | VIN — Input voltage supply |
| 引脚 2 | GND — Ground |
| 引脚 3 | VOUT1 — Flyback regulator output |
| 引脚 4 | VOUT2 — Inverting regulator output |
| 引脚 5 | VOUT3 — Buck regulator output |
| 引脚 6 | FB1 — Feedback for flyback regulator |
| 引脚 7 | FB2 — Feedback for inverting regulator |
| 引脚 8 | FB3 — Feedback for buck regulator |
| 引脚 9 | EN1 — Enable for flyback regulator |
| 引脚 10 | EN2 — Enable for inverting regulator |
| 引脚 11 | EN3 — Enable for buck regulator |
| 引脚 12 | SCLK — SPI clock input |
| 引脚 13 | SDI — SPI data input |
| 引脚 14 | SDO — SPI data output |
| 引脚 15 | CS — SPI chip select |
典型应用
ADP1031ACPZ-1 适用于 6 应用s: Isolated Data Acquisition, Industrial Process Control, Programmable Logic Controllers (PLCs), Isolated Sensor Interfaces, Motor Drives, Smart Grid Equipment.
Isolated Data Acquisition
The ADP1031ACPZ-1 provides isolated power and data transfer for data acquisition systems. Its integrated flyback, inverting, and buck regulators generate multiple isolated rails, while the four SPI isolation channels enable high-speed data communication across the isolation barrier. This eliminates the need for separate isolated power supplies and digital isolators, simplifying design and reducing board space. The device's high efficiency and low noise ensure accurate signal integrity in precision measurement applications.
推荐
Industrial Process Control
In industrial process control, the ADP1031ACPZ-1 provides isolated power rails for sensors, actuators, and controllers. The multiple regulators can generate positive and negative supplies needed for analog circuits, while the isolation protects sensitive electronics from high-voltage transients. The integrated SPI isolation channels allow safe communication between the control unit and field devices. The device's wide input voltage range and robust protection features make it suitable for harsh industrial environments.
推荐
Programmable Logic Controllers (PLCs)
PLCs require multiple isolated power rails for I/O modules and communication interfaces. The ADP1031ACPZ-1 integrates three regulators to provide these rails from a single input, reducing component count and board space. The four SPI isolation channels enable high-speed isolated communication between the PLC CPU and I/O modules. The device's high efficiency reduces heat dissipation, improving reliability in enclosed control cabinets.
推荐
Isolated Sensor Interfaces
The ADP1031ACPZ-1 is ideal for isolated sensor interfaces, providing clean power to sensors and isolating the signal path. The inverting regulator can generate a negative supply for sensors that require bipolar operation, while the buck regulator provides a low-noise positive rail. The SPI isolation channels transmit sensor data across the isolation barrier without corruption. This integration simplifies the design of isolated sensor modules and improves measurement accuracy.
推荐
Motor Drives
In motor drive applications, the ADP1031ACPZ-1 provides isolated power for gate drivers and control electronics. The flyback regulator can generate a high-side supply, while the buck regulator powers the low-side logic. The isolation protects the control circuitry from high-voltage transients on the motor lines. The integrated SPI isolation channels enable high-speed communication between the microcontroller and gate drivers, improving switching performance and reducing EMI.
推荐
Smart Grid Equipment
The ADP1031ACPZ-1 is used in smart grid equipment such as smart meters and power quality monitors. It provides isolated power for measurement circuits and communication interfaces, ensuring safety and noise immunity. The multiple regulators can generate the required voltage levels for analog front-ends and digital logic. The SPI isolation channels enable secure data transfer between the metering IC and the communication module, meeting stringent regulatory requirements.
推荐
推荐产品汇总
工程参考数据： ADP1031ACPZ-1 ——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 | ADP1031ACPZ-1-R7 | ADP1031ACPZ-3 | ADP1031ACPZ-2 |
|---|---|---|---|---|
| Package | 41-LFCSP (9x7) | 41-LFCSP (9x7) | 41-LFCSP (9x7) | 41-LFCSP (9x7) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Regulators | 3 | 3 | 3 | 3 |
| SPI Isolation Channels | 4 | 4 | 4 | 4 |
| Output Voltage Configuration | Variant -1 | Variant -1 | Variant -3 | Variant -2 |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant |
| Lead-Free | Yes | Yes | Yes | Yes |
| AEC-Q100 Qualified | No | No | No | No |
关键差异点
- Integrated three regulators and SPI isolation in one package （对比 Discrete solutions using separate regulators and isolators)
- High-speed SPI isolation channels （对比 ADP1031ACPZ-1-R7 (same device))
- Multiple output configurations (variants -1 to -5) （对比 ADP1031ACPZ-3)
设计说明
For optimal performance, place the ADP1031ACPZ-1 close to the isolation barrier and keep the high-frequency switching loops compact. Use a solid ground plane under the device and minimize trace lengths for the SPI lines. The exposed pad should be soldered to a thermal pad on the PCB to enhance heat dissipation.
The ADP1031ACPZ-1 can dissipate significant power depending on the load and input voltage. Ensure adequate thermal management by providing a copper area on the PCB connected to the exposed pad. For high-power applications, consider adding thermal vias to transfer heat to other layers. Monitor the junction temperature to stay within the specified limits.
One common pitfall is improper transformer selection for the flyback regulator. The transformer must have the correct turns ratio and isolation rating to achieve the desired output voltage and isolation. Additionally, ensure that the feedback resistors are accurately set to the required output voltages. Incorrect feedback can lead to output voltage errors or instability.
合规信息
RoHS and REACH compliant per distributor listings. Not AEC-Q100 qualified.
