300kHz, Dual, 180° Out-of-Phase, Step-Down PWM Controller Evaluation Board
The ISL6440EVAL1Z evaluation board highlights the operation of the ISL6440 300kHz dual, 180° out-of-phase, step-down pulse width modulation (PWM) controller in an...
概要
説明
The ISL6440 is a high-performance, dual-output PWM controller optimized for converting wall adapter, battery or network intermediate bus DC input supplies into the system supply voltages required for a wide variety of applications. Each output is adjustable down to 0. 8V. The two PWMs are synchronized 180o out of phase reducing the RMS input current and ripple voltage. The ISL6440 incorporates several protection features. An adjustable overcurrent protection circuit monitors the output current by sensing the voltage drop across the lower MOSFET. Hiccup mode overcurrent operation protects the DC/DC components from damage during output overload/short circuit conditions. Each PWM has an independent logic-level shutdown input (SD1 and SD2). A single PGOOD signal is issued when soft-start is complete on both PWM controllers and their outputs are within 10% of the set point. Thermal shutdown circuitry turns off the device if the junction temperature exceeds +150°C.
特長
- Wide Input Supply Voltage Range
- 5.6V to 24V
- 4.5V to 5.6V
- Two Independently Programmable Output Voltages
- Switching Frequency 300kHz
- Out of Phase PWM Controller Operation
- Reduces Required Input Capacitance and Power Supply Induced Loads
- No External Current Sense Resistor
- Uses Lower MOSFET's rDS(ON)
- Programmable Soft-Start
- Extensive Circuit Protection Functions
- PGOOD
- UVLO
- Overcurrent
- Overtemperature
- Independent Shutdown for Both PWMs
- Excellent Dynamic Response
- Voltage Feed-Forward with Current Mode Control
- Pb-Free Plus Anneal Available (RoHS Compliant)
製品比較
アプリケーション
アプリケーション
- Power Supplies with Two Outputs
- xDSL Modems/Routers
- DSP, ASIC, and FPGA Power Supplies
- Set-Top Boxes
- Dual Output Supplies for DSP, Memory, Logic, µP Core and I/O
- Telecom Systems
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| 分類 | タイトル | 日時 |
| データシート | PDF 683 KB 简体中文 | |
| ホワイトペーパー | PDF 295 KB | |
| EOL通知 | PDF 388 KB | |
| 製品変更通知 | PDF 398 KB | |
| 製品変更通知 | PDF 268 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 | |
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設計・開発
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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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