5A High-Efficiency Synchronous Buck Regulator Demonstration Boards
The ISL85005DEMO1Z platform allows quick demonstration of the high-performance features of the ISL85005 buck regulator.
The ISL85005 is a 4.5V to 18V input, 5A...
Overview
Description
The ISL85005 and ISL85005A are monolithic, synchronous buck regulators with integrated 5A, 18V high-side and low-side FETs. These devices provide an integrated bootstrap diode for the high-side gate driver to reduce the external parts count. These devices also have a wide input voltage range to support applications with input voltage from multi-cell batteries or regulated 5V and 12V power rails. The ISL85005 and ISL85005A regulate the output voltage with current mode control and have an internal oscillator. The switching frequency of the ISL85005 is internally set as 500kHz, and can be synchronized to an external clock signal with frequency ranges from 300kHz to 2MHz. The ISL85005A has a fixed 500kHz switching frequency. The ISL85005 has a fixed 2. 3ms soft-start, while the ISL85005A features programmable soft-start to limit inrush current during startup. With the SS pin floating, the soft-start time of ISL85005A is also 2. 3ms. The ISL85005 can be configured in either forced Continuous Conduction Mode (CCM) or Diode Emulation Mode (DEM). DEM enables high efficiency at light-load conditions. The ISL85005A always operates in forced CCM. The ISL85005 and ISL85005A have built-in protections including input UVLO protection, input and output overvoltage protection, high-side cycle-by-cycle current limit, low-side forward current limit and reverse current limit, and thermal shutdown.
Features
- 4.5V to 18V input voltage range
- Internal 5A, 18V high-side and low-side MOSFET switches
- ±1%, 0.8V feedback voltage reference
- Integrated bootstrap diode with undervoltage detection
- Current mode control with internal slope compensation
- Internal or external compensation options
- Default internally set 500kHz switching frequency
- Synchronization capability to external clock (ISL85005)
- Diode Emulation Mode (DEM) and Forced CCM (FCCM) options (ISL85005)
- Adjustable soft-start time (ISL85005A)
- Output Power-Good (PG) indicator
- Input Undervoltage Lockout (UVLO), input and output overvoltage protection
- High-side cycle-by-cycle current limit, low-side forward and reverse overcurrent protection, and thermal shutdown
- Small 12-pin 3mmx4mm Dual Flat No-Lead (DFN) package with EPAD for enhanced thermal performance
Comparison
Applications
Documentation
= Featured Documentation
Log in required to subscribe
|
|
|
|
|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 1.32 MB | |
| White Paper | PDF 378 KB | |
| Application Note | PDF 592 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
| Application Note | PDF 650 KB | |
| Application Note | PDF 387 KB | |
| Application Note | PDF 349 KB | |
8 items
|
||
Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| 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 | Renesas |
1 item
|
||
Boards & Kits
5A High-Efficiency Synchronous Buck Regulator Evaluation Board
The ISL85005EVAL1Z platform allows for a quick evaluation of the high-performance features of the ISL85005 buck regulator.
The ISL85005 is a 4.5V to 18V input, 5A...
Featured Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| DFN | Tube | 3 | |||
| DFN | Reel | 3 | |||
| DFN | Reel | 3 | 1.21 |
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
Videos & Training
12V Sync Buck Regulator Family Delivers Up to 14A
Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails in industrial and infrastructure applications.
Transcript
12V Synchronous Buck Regulator Family
Today I would like to introduce one of the most efficient and compact synchronous buck regulator families in the marketplace today.
There are many 12V rails in industrial applications today that need a buck converter to step the voltage down to a lower voltage and deliver up to 14A. Some of these applications often require a very efficient and compact solution. The highly integrated buck regulators listed here allow the users to meet all these requirements.
The ISL85009, ISL85012 and ISL85014 are pin compatible, very efficient and are able to deliver up to 14A. In applications that need less than 5A, Renesas offers ISL85003 and ISL85005 that are pin compatible. The ISL85009, ISL85012 and ISL85014 can operate from 3.8V to 18V input voltage, and the output voltage can be set as low as 0.6V. This family is highly integrated. The high-side and low-side FETs, with a bootstrap diode and compensation circuits are all integrated which helps to reduce the size, cost and bill of material.
This family is also highly reliable. It has high-side and low-side overcurrent protection, input and output overvoltage protection, over-temperature protection and negative current protection all integrated in the IC. This family also provides full feature sets and design flexibility to customers.
For instance, the selectable OCP scheme feature gives flexibility to the power supply designer to choose between hiccup and latch-off OCP mode, depending on their application requirements. Finally, the ISL85009, ISL85012 and ISL85014 are pin compatible, highly efficient and capable of delivering up to 14A in a very small 3.5mm x 3.5mm TQFN package.
As you see in the efficiency curve here, the ISL85009 provides one of the most efficient solution in the marketplace today. To support our customers with this family, we have developed several evaluation and demo boards.
Supporting tools such as iSim model, PowerCompass, schematic and Gerber files are all available online for this family on our website.
Video List