High-Performance Notebook PWM Controller Evaluation Board
The ISL6269AEVAL2Z evaluation board is used to demonstrate the performance of the ISL6269A single-phase synchronous buck PWM controller featuring Renesas' Robust Ripple...
概要
説明
The ISL6269A IC is a Single-phase Synchronous-Buck PWM controller featuring Intersil's Robust Ripple Regulator R3™ Technology that delivers truly superior dynamic response to input voltage and output load transients. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Intersil’s R3™ Technology combines the best features of fixed-frequency PWM and hysteretic PWM while eliminating many of their shortcomings. R3™ Technology employs an innovative modulator that synthesizes an AC ripple voltage signal VR, analogous to the output inductor ripple current. The AC signal VR enters a window comparator where the lower threshold is the error amplifier output VCOMP, and the upper threshold is a programmable voltage reference VW, resulting in generation of the PWM signal. The voltage reference VW sets the steady-state PWM frequency. Both edges of the PWM can be modulated in response to input voltage transients and output load transients, much faster than conventional fixed-frequency PWM controllers. Unlike a conventional hysteretic converter, the ISL6269A has an error amplifier that provides ±1% voltage regulation at the FB pin. The ISL6269A has a 1. 5ms digital soft-start and can be started into a prebiased output voltage. A resistor divider is used to program the output voltage setpoint. The ISL6269A can be configured to operate in Continuous Conduction Mode (CCM) or Diode Emulation Mode (DEM), which improves light-load efficiency. In CCM the controller always operates as a synchronous rectifier, however when DEM is enabled, the low-side MOSFET is permitted to stay off, blocking negative current flow into the low-side MOSFET from the output inductor.
特長
- High performance R3™ Technology
- Fast transient response
- ±1% regulation accuracy: -10°C to +100°C and -40°C to +100°C
- Wide input voltage range: +5.0V to +25.0V
- Output voltage range: +0.6V to +3.3V
- Wide output load range: 0A to 25A
- Selectable diode emulation mode for increased light load efficiency
- Programmable PWM frequency: 200kHz to 600kHz
- Prebiased output start-up capability
- Integrated MOSFET drivers and bootstrap diode
- Internal digital soft-start
- Power good monitor
- Fault protection
- Undervoltage protection
- Soft crowbar overvoltage protection
- Low-side MOSFET rDS(ON) overcurrent protection
- Over-temperature protection
- Fault identification by PGOOD pull down resistance
- Pb-free (RoHS compliant)
製品比較
アプリケーション
アプリケーション
- PCI express graphical processing unit
- Auxiliary power rail
- VRM
- Network adapter
ドキュメント
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| 分類 | タイトル | 日付 |
| データシート | PDF 793 KB | |
| カタログ | PDF 5.63 MB 英語 | |
| 製品変更通知 | PDF 169 KB | |
| 製品変更通知 | PDF 202 KB | |
| 製品変更通知 | PDF 326 KB | |
| 製品変更通知 | PDF 398 KB | |
| 製品変更通知 | PDF 106 KB | |
| 製品変更通知 | PDF 173 KB | |
| 製品変更通知 | PDF 79 KB | |
| 製品変更通知 | PDF 248 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 | |
| その他資料 | PDF 303 KB | |
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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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会社名
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| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | ルネサス |
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ボード＆キット
ボード＆キット
モデル
ECADモデル
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Processing table
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
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- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
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- Cart icon to the right of the chip icon: Indicates that samples are available for this product
サポート
Renesas Samples
注文可能な製品番号を選択
| 発注型名 | サンプル |
|---|---|
| ISL6269ACRZ | Availability |
| ISL6269ACRZ-T | Availability |