GreenPAK™ with Low Drop Out Regulators

To overcome these challenges, Dialog has developed the concept of “Flexible Power Islands”. Using FPIs, designers can divide their complex power system into some number of local power regions (or islands), each of which includes the power control, power sequencing and power regulation needed to support loads in the immediate vicinity. This technique results in higher performance and a more efficient solution that can be flexibly tailored to the requirements of each individual system.

在某些情况下，使用FPI可以非常有用，可以增强电源管理IC（PMIC）中包含的功能。在此用例中，FPI可以支持局部负载点调节，排序和电源监控。这可能导致更简单的布局，以及改善的能量和热效率。

对于较小和更简单的系统（具有最多六个电源轨），FPI概念可以提供大多数或所有电源系统功能。在这种情况下，FPI可以用作“μPMIC”，但是增加了更高水平的灵活性和定制的益处，没有对NRE的要求。

使用SLG46580，对话框已经捕获了许多这些必要的电力系统功能（电源监控，测序，复位和电源开关），以2.0 x 3.0 mm 20销全封装的塑料包装。使用对话框的易于使用的GUI基于GUI的GPAK Designer™和GPAK开发硬件，设计人员可以快速轻松地实现其独特的设备配置，从而定制功能符合其独特的电源要求。

The SLG46580 has four LDOs, each with a maximum output current of 150mAs. Each of the LDOs has a programable output voltage level that can be set to one of thirty two different values from 0.9V to 4.35V, and also have programmable options for slew-rate selection and fault detection.

The FPI concept is broadly applicable across a range of end markets, shown below.

• Handheld Devices
• Wearable Electronics
• 计算和存储
• 消费类电子产品
• Smart Home
• 网络和通信
• 医学＆工业

Benefits of GreenPAK with LDOs

High Integration

• Includes many components typically found in power systems
  • Power Control
  • Power Sequencing
  • 电力监控
  • 权力调节

Small Size

• 2.0 x 3.0 STQFNpackaging for small board area

Tri-Mode 150 mA LDO Regulators:

• Mode 0: 150mA output with Quiescent Current at ~60 μA
• Mode 1: 100μA output with Quiescent Current at ~6 μA
• 旁路模式：像负载开关一样

Flexibility of GreenPAK Configurable Macro-cells

• Analog Comparators
• 有限公司mbination Function Macro-cells
• Asynchronous State Machine (ASM)
• I²C.Slave Protocol Interface

使用异步状态机进行电源排序

The Asynchronous State Machine (ASM) macro-cell is perfect for driving a flexible power-sequencing architecture. The Graphic User Interface (GUI) based development tools allow the user to quickly define the operating states, the allowed transitions between states, and link to the signals that drive each state transition. Using other GreenPAK macro-cells allows the user to easily time based state transitions (using delay macro-cells) and logic functions (using Look-Up Tables). The example state machine shown below is the one used in the demo project to drive both the power sequencing signals for six power rails, as well as the signals to turn on the four LDOs in sequence.

有限公司ntrolling LDOs with GreenPAK Resources

The LDOs included in these devices allow the user to control many aspects of the output dynamically during operation:

控制输出电压：每个LDO都可以支持两个输出电压，这是可用户可选择的。有一个来自连接矩阵的内部信号，可以在操作期间切换输出电压。

有限公司ntrolling Power Consumption:Each LDO regulator can operate in MODE0 (standard active mode supporting full 150 mA output), as well as MODE1 (low power mode with maximum 100μ output with reduced quiescent current consumption.

Load Switch Mode:每个LDO都有一个用户可选择的选项，其中稳压器停止调节，功率MOSFET作为电源开关接通，使电压直接施加到VOUT到VOUT。

Changing LDO Behavior Via I²C:上面列出的所有控制功能也可以通过I²C命令更改。