デジタルパワーは、情報通信技術市場における現代の電子システムで消費電力を削減し、さらに複雑化する電力を管理するために使用できる最も重要な技術の1つです。

ルネサスのデジタルパワーマネージメントおよび制御ICのポートフォリオは、設計の柔軟性を提供し、迅速な製品の市場投入を可能にすることで、インフラ市場を進化させていきます。

ルネサスのデジタルパワー技術について

デジタルパワーマネージメントおよびデジタルパワー制御は、システム開発者が自社の環境に自動的に適応して効率を最適化する電力システムを構築できるリアルタイムのインテリジェンスを提供します。インテリジェントデジタルパワーICを使用することで、負荷とシステム温度の変化に対する自動補償を手に入れることができ、適応型デッドタイム制御、動的電圧スケーリング、周波数シフト、位相ドロップ、および不連続スイッチングモードによる省エネを可能にします。

ルネサスの製品は、ワールドクラスのデジタル電力変換アーキテクチャとパワーマネージメント回路を1つのICに統合したものです。それらは外部回路が最小限で済み、ボードスペースの減らし、そして設計プロセスを単純化します。ルネサスのデジタルテクノロジは、インテリジェンスをシリコンに組み込んでいるため、単純なピンストラップオプションまたはPMBusコマンドを使用してデバイスを簡単に構成できます。この製品ファミリは、システム設計者が単一のサプライヤの部品を使用して設計を完成させることができる幅広い動作条件に対応しています。

PowerNavigator™ソフトウェアを使用すると、簡単なグラフィカルユーザーインタフェースを使用して、デジタル電源設計のすべての機能を簡単に変更できます。

カテゴリ

デジタル・インタフェース電源モジュール

1つの小型パッケージに統合されたデジタルPMBus電源モジュール

デジタル多相DC/DCコントローラ用スマートパワーステージ

DCRセンシング・ネットワークをなくし、開発の簡素化と性能の向上を実現

単相DC/DCポイントオブロード(POL)コントローラ

高性能でフレキシビリティがあり、先進的なフィーチャーセットを実現するデジタルPWMパワーコントローラ

多相降圧CPUパワー

2つの出力に任意の組み合わせで最大20相を割り当て可能

ドキュメント

分類 タイトル 日付
ホワイトペーパー PDF 240 KB
ホワイトペーパー PDF 258 KB 简体中文
ホワイトペーパー PDF 705 KB
ホワイトペーパー PDF 483 KB
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Digital Multiphase Controllers with PowerNavigator: Overview

Introducing PowerNavigator v5.3.45 and its integration of the latest family of digital power multiphase controllers.

Transcript

This video introduces PowerNavigator™ GUI Software and its integration with our latest family of digital power multiphase controllers. PowerNavigator is Renesas' GUI for use of all of our digital power controllers. It's used to configure, set up, read back real time telemetry, and also debug systems on real time.

For today's demonstration, we will be using the ISL68137 7-phase digital multiphase controller. Here we have the evaluation board. It's powered by a 12V and 5V vent supply. We also have PMBus and AVSBus connectors that go to the PC in an alternate interface with our PowerNavigator software.

So looking at PowerNavigator, the first thing you'll see is the power map. The power map gives a system-level view of all the products that are connected to the GUI. Here is the ISL68137. It's a dual output device, so we have two blocks on the power map. One block has all seven phases assigned to it. This is highlighted by the seven green dots inside that rail block.

On the right hand side, we have our monitor view. Monitor view shows the output voltage, the input voltage, the load current—all telemetry from the device in real time.

Double-clicking on the rail block brings up the rail inspector design tool. Rail inspector is how we configure the device. It has the rail name, its status, and on the left hand side is a menu. As I walk through the menu, I'm able to fully configure all of the features inside this product.

The first screen we'll look at is called phase configuration. Phase configuration allows me to assign each one of these phases to one of the two control loops inside the device. On this particular board, I have seven phases assigned to loop 1. It also allows us to enable auto-phase dropping for efficiency. When auto-phase dropping is enabled, as the load current changes, we automatically add or take away phases. The thresholds for auto-phase drop are all configured digitally and done so on the screen.

The next page is a general configuration page. This does the outward voltage settings, including the fault limits, as well as the switching frequency.

The power train page is used to set up the power train for this device. You input the MOSFET properties, the inductor that you're using, the output capacitance and its properties.

We also set up a current sense gain. This eval board uses our smart power stage which automatically provides current sense information back to the controller, making current sense very easy to set up.

The next page is the transient setup page. The transient setup page is where you configure the digital control loop inside this device. It's used to set up the control loop gains, AC current feedback, and then additional things like pulse advance and load line settling to improve the low transient response. If you're using R load line, the droop impedance is set in the R droop box.

The next screen is diode braking. Diode braking is used to improve the transient response by turning off the load-side MOSFET during a load release. This can reduce the overshoot of the output voltage, improving the overall response of the controller. Ramp time is used to set the on delays, the off delays, as well as the rise and fall times of the controller.

The final screen here in the general loop configuration is the temperature sense setup. This enables an external diode or the TMON output from the smart power stage, where the controller can measure the real-time temperature of the smart power stage.

Moving on to the faults section, all the faults in this device are configured digitally. So the fault responses and fault thresholds all are configured with this GUI, making the responses in the setup threshold very easy to set. We have voltage, current, and temperature faults. They're all configured with the GUI.

The final thing is a black box. Black box is used to automatically trigger black box capture, in the case of a fault. When enabled and a fault happens, the controller captures all the telemetry information and saves that to the device. This can be used for debug later on and as way to tell exactly why a controller shut down.

Once the device is fully configured, you have the memory configuration page. Inside the device, there are eight different configuration IDs that allow you to save up to eight unique settings inside these controllers. Once you're done configuring, you would simply hit save, and that would save that setting to one of these eight slots inside the device's non-volatile memory.

The real inspector tool also has advanced features like AVSBus. AVSBus is a fast point-to-point communication with up to 50MHz speed. This allows the part to communicate with A6 as support AVSBus interfaces in a very fast manner. With PowerNavigator, you can very quickly evaluate and demonstrate AVSBus and see if the dynamic response behavior of the controller within oscilloscope.

The final page here is the telemetry page. Telemetry allows you to plot real-time telemetry of the device. This includes input voltage, output voltage, current, etc., all plotted in real time, as we've shown here.

We hope this video was helpful in explaining how the PowerNavigator software interfaces with our full digital multiphase controllers.