概要
説明
ISL81401EVAL1Z 評価ボードは、外部ソフトスタート、独立したイネーブル機能、UV/OV/OC/OT 保護機能を備えた 40V 高電圧同期整流型昇降圧コントローラ ISL81401 を装備しています。 100kHz 〜 600kHz まで設定可能なスイッチング周波数は、インダクタを最適化するのに役立ちます。また、強力なゲートドライバは、昇降圧出力に対して最大 20A を供給します。
特長
- 幅広い入力電圧: 6V ～ 40V
- 双方向動作
- パルスをスキップする DEM 動作の軽負荷時でも高効率動作
- プログラム可能なソフトスタート
- オプションの DEM/PWM 動作
- オプションの CC/HICCUP OCP 保護
- ソフトスタートによるプリバイアス出力をサポート
- PGOOD インジケータ
- OVP/OTP/UVP 保護
- 出力からの逆方向バイアスによる効率向上
アプリケーション
アプリケーション
- バッテリバックアップ
- 電源：USB Type-C、充電器
- バッテリ駆動の産業用電子機器
- 自動車関連市場
- 冗長電源
- ロボットやドローン
- 医療機器
- セキュリティ監視
設計・開発
ソフトウェア／ツール
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ビデオ&トレーニング
ISL81601 is a true bidirectional 4-switch synchronous buck-boost controller for efficient DC-DC power conversion with peak and average current sensing and monitoring at both ends. It provides cycle-by-cycle current limit in both directions while in buck or boost mode, and generates point-of-load (POL) and voltage rail conversions with peak efficiency up to 99%. The controller uses a proprietary buck-boost algorithm that allows inherent peak current sensing for a robust design and produces the smoothest mode transitions between buck, boost and buck-boost. Its proprietary algorithm reduces low frequency ripple at Vout, ensuring minimal disturbances during line or load transients. The algorithm also ensures predictable ripple voltage under all conditions. The ISL81601 features multilayer overcurrent protection (OCP) that helps designers to design a charging/discharging circuit that ensures constant current operation for safe and reliable battery power applications. It is available in 32LD 5mmx5mm QFN and 38LD HTSSOP packages and provides full protection features such OVP, UVP, OTP and OCP. ISL81601 is a 4.5Vin~ 60Vin device and the ISL81401 is a 4.5Vin~40Vin device. The ISL81401A is a low cost unidirectional version of the ISL81401.