Dual/n-Phase Buck PWM Controller with Integrated Drivers Evaluation Board
The ISL8120EVAL3Z evaluation board is used for a performance demo of dual independent outputs and DDR applications.
The ISL8120 integrates two voltage-mode...
主要ドキュメント:
概要
説明
The ISL8120 integrates two voltage-mode PWM leading-edge modulation control, with input feed-forward synchronous buck PWM controllers, to control a dual independent voltage regulator or a 2-phase single output regulator. It also integrates current sharing control for the power module to operate in parallel, which offers high system flexibility. The ISL8120 integrates an internal linear regulator, which generates VCC from input rail for applications with only one single supply rail. The internal oscillator is adjustable from 150kHz to 1. 5MHz, and is able to synchronize to an external clock signal for frequency synchronization and phase paralleling applications. Its PLL circuit can output a phase-shift programmable clock signal for the system to be expanded to 3-, 4-, 6-, 12- phases with desired interleaving phase shift. The ISL8120’s Fault Hand Shake feature protects any channel from overloading/stressing due to system faults or phase failure. The undervoltage fault protection features are also designed to prevent a negative transient on the output voltage during falling down. This eliminates the Schottky diode that is used in some systems for protecting the load device from reversed output voltage damage.
特長
- Wide VIN range operation: 3V to 22V
- VCC operation from 3V to 5.60V
- Excellent output voltage regulation: 0.6V ±0.6%/±0.9% internal reference over commercial/industrial temperature
- Frequency synchronization
- Programmable phase shift for 1-, 2-, 3-, 4-, 6-, up to 12-phase applications
- Fault hand shake capability for high system reliability
- Digital soft-start with precharged output start-up capability
- Dual independent channel enable inputs with precision voltage monitor and voltage feed-forward capability
- Programmable input voltage POR and its hysteresis with a resistor divider at EN input
- Extensive circuit protection functions: output overvoltage, undervoltage, overcurrent protection, over temperature and pre-power-on reset overvoltage protection option
製品比較
アプリケーション
- Power Supply for Datacom/Telecom and POL
- Paralleling Power Module
- Wide and Narrow Input Voltage Range Buck Regulators
- DDR I and II Applications
- High Current Density Power Supplies
- Multiple Outputs VRM and VRD
設計・開発
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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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Dual/n-Phase Buck PWM Controller with Integrated Drivers Evaluation Board
The ISL8120EVAL4Z evaluation board is used for a performance demo of 2/n-phase single-output applications.
The ISL8120 integrates two voltage-mode synchronous buck...
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モデル
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