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ISL6522EVAL1

更新时间： 2024-11-27 23:59:51
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Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

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ISL6522  
®
Data Sheet  
November 2002  
FN9030.3  
Buck and Synchronous Rectifier  
Features  
Pulse-Width Modulator (PWM) Controller  
• Drives two N-Channel MOSFETs  
• Operates from +5V or +12V input  
The ISL6522 provides complete control and protection for a  
DC-DC converter optimized for high-performance  
microprocessor applications. It is designed to drive two  
N-Channel MOSFETs in a synchronous rectified buck  
topology. The ISL6522 integrates all of the control, output  
adjustment, monitoring and protection functions into a single  
package.  
• Simple single-loop control design  
- Voltage-mode PWM control  
• Fast transient response  
- High-bandwidth error amplifier  
- Full 0–100% duty ratio  
The output voltage of the converter can be precisely  
regulated to as low as 0.8V, with a maximum tolerance of  
±1% over temperature and line voltage variations.  
• Excellent output voltage regulation  
- 0.8V internal reference  
- ±1% over line voltage and temperature  
The ISL6522 provides simple, single feedback loop, voltage-  
mode control with fast transient response. It includes a  
200kHz free-running triangle-wave oscillator that is  
adjustable from below 50kHz to over 1MHz. The error  
amplifier features a 15MHz gain-bandwidth product and  
6V/µs slew rate which enables high converter bandwidth for  
fast transient performance. The resulting PWM duty ratio  
ranges from 0–100%.  
• Overcurrent fault monitor  
- Does not require extra current sensing element  
- Uses MOSFETs r  
DS(ON)  
• Converter can source and sink current  
• Small converter size  
- Constant frequency operation  
- 200kHz free-running oscillator programmable from  
50kHz to over 1MHz  
The ISL6522 protects against overcurrent conditions by  
inhibiting PWM operation. The ISL6522 monitors the current  
• 14-lead SOIC and TSSOP package and 16-lead 5x5mm  
MLFP Package  
by using the r  
of the upper MOSFET which eliminates  
DS(ON)  
the need for a current sensing resistor.  
• MLFP Package  
- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat  
No Leads-Product Outline.  
Pinout  
TOP VIEW  
- Near Chip-Scale Package Footprint; Improves PCB  
Efficiency and Thinner in Profile  
SOIC  
and  
TSSOP  
14  
13  
12  
11  
10  
9
RT  
1
2
3
4
5
6
7
VCC  
PVCC  
LGATE  
PGND  
BOOT  
UGATE  
PHASE  
OCSET  
SS  
Applications  
®
®
• Power supply for Pentium , Pentium Pro, PowerPC and  
AlphaPC™ microprocessors  
COMP  
FB  
EN  
• High-power 5V to 3.xV DC-DC regulators  
• Low-voltage distributed power supplies  
8
GND  
TOP VIEW  
Ordering Information  
TEMP.  
PKG.  
NO.  
o
PART NUMBER RANGE ( C)  
PACKAGE  
14 Ld SOIC  
16 15 14 13  
ISL6522CB  
ISL6522IB  
ISL6522CV  
ISL6522IV  
ISL6522CR  
ISL6522IR  
0 to 70  
-40 to 85  
0 to 70  
M14.15  
MLFP  
SS  
COMP  
FB  
1
PVCC  
12  
11  
10  
9
14 Ld SOIC  
M14.15  
2
LGATE  
PGND  
BOOT  
14 Ld TSSOP  
14 Ld TSSOP  
16 Ld 5x5 MLFP  
16 Ld 5x5 MLFP  
M14.173  
M14.173  
L16.5x5B  
L16.5x5B  
GND  
3
4
-40 to 85  
0 to 70  
EN  
5
6
7
8
-40 to 85  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.  
1
Copyright © Intersil Americas Inc. 2002, All Rights Reserved  
®
®
PowerPC is a trademark of IBM. AlphaPC™ is a trademark of Digital Equipment Corporation. Pentium is a registered trademark of Intel Corporation.  
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ISL6522IR RENESAS

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 		SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC16, 5 X 5 MM, PLASTIC, MO-220-VHHB,
ISL6522IR-T RENESAS

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 		SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC16, 5 X 5 MM, PLASTIC, MO-220-VHHB,
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ISL6522IRZ INTERSIL

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 		Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

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