ISL6535IRZ-T7 PDF预览

ISL6535IRZ-T7

更新时间: 2025-07-27 09:14:11
品牌 Logo 应用领域
瑞萨 - RENESAS 开关
页数 文件大小 规格书
14页 456K
描述
SWITCHING CONTROLLER

ISL6535IRZ-T7 数据手册

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ISL6535  
Data Sheet  
February 13, 2015  
FN9255.2  
Synchronous Buck Pulse-Width  
Features  
Modulator (PWM) Controller  
• Operates from +12V input  
The ISL6535 is a high performance synchronous controller  
for demanding DC/DC converter applications. It provides  
overcurrent fault protection and is designed to safely start-up  
into prebiased output loads.  
• Excellent output voltage regulation  
- 0.597V internal reference  
- 1% over the commercial temperature range  
- 1.5% over the industrial temperature range  
• Simple single-loop control design  
- Voltage-mode PWM control  
The output voltage of the converter can be precisely  
regulated to as-low-as 0.597V, with a maximum tolerance of  
±1% over the commercial temperature range, and ±1.5%  
over the industrial temperature range.  
• Fast transient response  
- High-bandwidth error amplifier  
- Full 0% to 100% duty ratio  
- Leading and falling edge modulation  
The ISL6535 provides simple, single feedback loop, voltage  
mode control with fast transient response. It includes a triangle  
wave oscillator that is adjustable from below 50kHz to over  
1.5MHz. Full (0% to 100%) PWM duty cycle support is  
provided.  
• Small converter size  
- Constant frequency operation  
- Oscillator programmable from 50kHz to over 1.5MHz  
• 12V high-speed MOSFET gate drivers  
- 2.0A source/3A sink at 12V low-side gate drive  
- 1.25A source/2A sink at 12V high-side gate drive  
- Drives two N-Channel MOSFETs  
The error amplifier features a 15MHz gain bandwidth  
product and 6V/µs slew rate, which enables high converter  
bandwidth for fast transient performance.  
• Overcurrent fault monitor  
The ISL6535's overcurrent protection monitors the current  
- High-side MOSFET’s r  
- Reduced ~120ns blanking time  
sensing  
DS(ON)  
by using the r  
of the upper MOSFET, which  
DS(ON)  
eliminates the need for a current sensing resistor.  
• Converter can source and sink current  
• Soft-start done and an external reference pin for tracking  
applications are available in the QFN package  
Pinouts  
ISL6535 (14 LD SOIC)  
TOP VIEW  
• Pin compatible with ISL6522  
• Supports start-up into prebiased loads  
• Pb-free (RoHS compliant)  
14 VCC  
1
2
3
4
5
6
7
RT  
OCSET  
SS  
13 PVCC  
12  
11  
LGATE  
PGND  
Applications  
COMP  
FB  
• Power Supply for some Pentium®, PowerPC™, as-well-as  
graphic CPUs  
• High-power 12V input DC/DC regulators  
• Low-voltage distributed power supplies  
10 BOOT  
9
8
UGATE  
PHASE  
EN  
GND  
ISL6535 (16 LD QFN)  
TOP VIEW  
16 15 14 13  
SS  
COMP  
FB  
1
12 PVCC  
11 LGATE  
10 PGND  
2
3
4
EN  
9
BOOT  
5
6
7
8
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2006, 2007, 2015. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
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