GreenPAK™ with Low Drop Out Regulators

为了克服这些挑战，对话已经制定了“灵活权力岛屿”的概念。使用FPI，设计人员可以将它们的复杂电力系统分成一些局部电源区域（或岛），每个数量包括在附近支持负载所需的功率控制，功率排序和功率调节。该技术导致更高的性能和更有效的解决方案，可以灵活地根据每个单独系统的要求量身定制。

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。

For smaller and simpler systems (which have up to six power rails), the FPI concept can provide most or all of the power system functions needed. In this case, the FPI can serve as a “µPMIC”, but with the added benefit of greater levels of flexibility and customization, with no requirements for NRE.

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

高集成

• 包括通常在电力系统中找到的许多组件
  • 力量Control
  • 电源测序
  • 力量Monitoring
  • 权力调节

Small Size

• 2。0.x 3.0 STQFN packaging for small board area

Tri-Mode 150 MA LDO调节器：

• 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
• Combination Function Macro-cells
• Asynchronous State Machine (ASM)
• I²C从协议界面

Using Asynchronous State Machine for Power Sequencing

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.

控制LDO与GreenPak资源

包括在这些设备中的LDO允许用户在操作期间动态地控制输出的许多方面：

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。

控制功耗：每个LDO稳压器都可以以MODE0（标准主动模式支持满150 mA输出），以及MODE1（低功耗模式，最大为100μ的输出，静态电流消耗降低。

Load Switch Mode:Each LDO has a user-selectable option where regulator ceases to regulate and the power MOSFET is turned on as a power switch, passing the voltage applied to VIN directly to 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。