概要
説明
The ISL6742 is a high-performance double-ended PWM controller with advanced synchronous rectifier control and current limit features. It is suitable for both current- and voltage-mode control methods. The ISL6742 includes complemented PWM outputs for Synchronous Rectifier (SR) control. The complemented outputs may be dynamically advanced or delayed relative to the main outputs using an external control voltage. Its advanced current sensing circuitry employs sample and hold methods to provide a precise average current signal. Suitable for average current limiting, a technique which virtually eliminates the current tail-out common to peak current limiting methods, it is also applicable to current sharing circuits and average current-mode control. This advanced BiCMOS design features an adjustable oscillator frequency up to 2MHz, internal over-temperature protection, precision dead time control, and short propagation delays. Additionally, multipulse suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur.
特長
- Synchronous rectifier control outputs with adjustable delay/advance
- Adjustable average current signal
- 3% Tolerance cycle-by-cycle peak current limit
- Fast current sense to output delay
- Adjustable oscillator frequency up to 2MHz
- Adjustable dead time control
- Voltage- or current-mode operation
- Separate RAMP and CS inputs for voltage feed-forward or current-mode applications
- Tight tolerance error amplifier reference over line, load, and temperature
- 175µA start-up current
- Supply UVLO
- Adjustable soft-start
- 70ns leading edge blanking
- Multipulse suppression
- Internal over-temperature protection
- Pb-Free (RoHS compliant)
製品比較
アプリケーション
- Half-Bridge, Full-Bridge, Interleaved Forward, and Push-Pull Converters
- Telecom and Datacom Power
- Wireless Base Station Power
- File Server Power
- Industrial Power Systems
ドキュメント
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| 分類 | タイトル | 日時 |
| データシート | PDF 990 KB 简体中文 | |
| 製品変更通知 | PDF 294 KB | |
| アプリケーションノート | PDF 509 KB | |
| アプリケーションノート | PDF 397 KB | |
| アプリケーションノート | PDF 1.05 MB | |
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設計・開発
ソフトウェア／ツール
ソフトウェア／ツール
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| iSim:PEオフラインシミュレーションツール iSim Personal Edition（iSim：PE）は、プロジェクトの早い段階で設計サイクルを速め、プロジェクト初期のリスクを低減し、現在のみならず次世代の設計に耐えうる部品を選定します。
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Simulator | ルネサス |
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モデル
ECADモデル
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Processing table
| QSOP | Tube | 2 | 3.647 | サンプルを入手, | |
| QSOP | Reel | 2 |
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