High-Performance Dual-Output Buck Controller Evaluation Board
The ISL6228EVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Renesas' R3™ (robust ripple regulator)...
High-Performance Dual-Output Buck Controller for Notebook Applications
ページセクションへ移動：
概要
説明
The ISL6228 IC is a dual channel 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 diodes result in fewer components and smaller implementation area. Intersil's R3 technology combines the best features of fixed-frequency and hysteretic PWMs 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, each channel of the ISL6228 has an error amplifier that provides ±1% voltage regulation at the FB pin. The ISL6228 has a 1. 5ms digital soft-start and can be started into a pre-biased output voltage. A resistor divider is used to program the output voltage setpoint. The ISL6228 operates in continuous-conduction-mode (CCM) in heavy load, and in diode-emulation-mode (DEM) in light load to improve light-load efficiency. In CCM, the controller always operates as a synchronous rectifier. In DEM, 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
- Individual power stage input rail for each channel
- Wide input voltage range: +3.3V to +25V
- Output voltage range: +0.6V to +5V
- Diode emulation mode for increased light load efficiency
- Programmable PWM frequency: 200kHz to 600kHz
- Pre-biased 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
- Inductor DCR overcurrent protection
- Over-temperature protection
- Fault identification by PGOOD pull-down resistance
- Pb-free available (RoHS compliant)
アプリケーション
アプリケーション
- General purpose switching buck regulators
- PCI express graphical processing unit
- Auxiliary power rail
- VRM
- Network adapter
ドキュメント
|
|
日付 | |
|---|---|---|
| PDF 874 KB 简体中文 | データシート | |
| PDF 5.63 MB 英語 | カタログ | |
| PDF 326 KB | 製品変更通知 | |
| PDF 294 KB | 製品変更通知 | |
| PDF 90 KB | 製品変更通知 | |
| PDF 248 KB | 製品変更通知 | |
| 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 683 KB | マニュアル－開発ツール | |
| PDF 1.10 MB | マニュアル－開発ツール | |
| PDF 1.10 MB | マニュアル－開発ツール | |
| PDF 1.10 MB | マニュアル－開発ツール | |
12 items
|
||
設計・開発
ソフトウェア／ツール
ソフトウェア／ツール
| Software title
|
Software type
|
会社名
|
|---|---|---|
| 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.
|
Simulator | ルネサス |
1 item
|
||
ボード＆キット
ボード＆キット
High-Performance Dual-Output Buck Controller Evaluation Board
The ISL6228HIEVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Renesas' R3™ (robust ripple...
主要ドキュメント:
High-Performance Dual-Output Buck Controller Evaluation Board
The ISL6228LOEVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Renesas' R3™ (robust ripple...
主要ドキュメント:
モデル
ECADモデル
[製品選択]テーブル内の製品名をクリックするとSamacSysが提供する回路図シンボル、PCBフットプリント、3D CADモデルがご確認いただけます。 お探しのシンボルやモデルが見つからない場合、Webサイトから直接リクエストできます。
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
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- 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
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- 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 |
|---|---|
| ISL6228HRTZ | Availability |
| ISL6228HRTZ-T | Availability |
| ISL6228IRTZ | Availability |
| ISL6228IRTZ-T | Availability |