ISL6522ACR Intersil, ISL6522ACR Datasheet

ISL6522ACR

Manufacturer Part Number

ISL6522ACR

Description

IC PWM BUCK BST VM 16QFN

Manufacturer

Intersil

Datasheet

1.ISL6522ACB.pdf (13 pages)

Specifications of ISL6522ACR

Pwm Type

Voltage Mode

Number Of Outputs

Frequency - Max

1MHz

Duty Cycle

100%

Voltage - Supply

10.8 V ~ 13.2 V

Buck

Yes

Boost

Yes

Flyback

Inverting

Doubler

Divider

Cuk

Isolated

Operating Temperature

25°C ~ 70°C

Package / Case

16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN

Frequency-max

1MHz

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL6522ACR

Manufacturer:

INTERSIL

Quantity:

120

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL6522ACR

Manufacturer:

HARRIS

Quantity:

269

Current page: 1 of 13
Download datasheet (442Kb)

Buck and Synchronous Rectifier

Pulse-Width Modulator (PWM) Controller

The ISL6522A 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 ISL6522A integrates all of the control, output

adjustment, monitoring and protection functions into a single

package.

The output voltage of the converter can be precisely

regulated to as low as 0.8V, with a maximum tolerance of

±0.5% over temperature and line voltage variations.

The ISL6522A 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%.

The ISL6522A protects against overcurrent conditions by

inhibiting PWM operation. The ISL6522A monitors the

current by using the r

eliminates the need for a current sensing resistor.

Ordering Information

NOTE: Intersil Pb-free products employ special Pb-free material sets;

molding compounds/die attach materials and 100% matte tin plate

termination finish, which are RoHS compliant and compatible with

both SnPb and Pb-free soldering operations. Intersil Pb-free products

are MSL classified at Pb-free peak reflow temperatures that meet or

exceed the Pb-free requirements of IPC/JEDEC J STD-020.

*Add “-T” suffix for tape and reel.

ISL6522ACB

ISL6522ACBZ

(See Note)

ISL6522ACR

ISL6522ACRZ

(See Note)

PART NUMBER*

RANGE (°C)

DS(ON)

25 to 70

TEMP.

of the upper MOSFET which

14 Ld SOIC

(Pb-free)

16 Ld 5x5 QFN

(Pb-free)

Data Sheet

PACKAGE

M14.15

L16.5x5B

DWG. #

PKG.

1-888-INTERSIL or 321-724-7143

CCAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Drives two N-Channel MOSFETs

• Operates from +5V or +12V input

• Simple single-loop control design

• Fast transient response

• Excellent output voltage regulation

• Overcurrent fault monitor

• Converter can source and sink current

• Small converter size

• 14 Ld SOIC and 16 Lead 5x5mm QFN Packages

• QFN Package

• Pb-Free Available (RoHS Compliant)

Applications

• Power supply for Pentium

• High-power 5V to 3.xV DC-DC regulators

• Low-voltage distributed power supplies

- Voltage-mode PWM control

- High-bandwidth error amplifier

- Full 0-100% duty ratio

- 0.8V internal reference

- ±0.5% over line voltage and temperature

- Does not require extra current sensing element

- Uses MOSFETs r

- Constant frequency operation

- 200kHz free-running oscillator programmable from

- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat

- Near Chip-Scale Package Footprint; Improves PCB

AlphaPC™ microprocessors

50kHz to over 1MHz

No Leads-Product Outline.

Efficiency and Thinner in Profile

All other trademarks mentioned are the property of their respective owners.

April 13, 2005

Intersil (and design) is a registered trademark of Intersil Americas Inc.

DS(ON)

, Pentium Pro, PowerPC

ISL6522A

FN9122.2

and

Related parts for ISL6522ACR

ISL6522ACR Summary of contents

Page 1

... ISL6522ACBZ SOIC (See Note) (Pb-free) ISL6522ACR 5x5 QFN ISL6522ACRZ 5x5 QFN (See Note) (Pb-free) NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 2

... Pinouts ISL6522ACR (16 LD QFN) TOP VIEW COMP Typical Application SS RT REF FB 2 ISL6522A 12 PVCC 11 LGATE 10 PGND 9 BOOT 12V V CC OCSET MONITOR AND EN PROTECTION BOOT OSC UGATE PHASE ISL6522A +12V PV CC LGATE - + + PGND - GND COMP ISL6522A (14 LD SOIC) TOP VIEW VCC 13 PVCC ...

Page 3

Block Diagram OCSET REFERENCE FB COMP RT 3 ISL6522A POWER-ON RESET (POR OVER CURRENT 4V 200µA PWM 0.8V COMPARATOR REF + + - - ERROR AMP OSCILLATOR VCC EN 10µA SOFT- SS START BOOT UGATE PHASE GATE INHIBIT ...

Page 4

Absolute Maximum Ratings Supply Voltage +15.0V CC Boot ...

Page 5

Typical Performance Curves R PULLUP T TO +12V 1000 100 R PULLDOWN 100 SWITCHING FREQUENCY (kHz) FIGURE 1. R RESISTANCE vs FREQUENCY T Functional Pin Descriptions RT This pin provides oscillator switching frequency adjustment. By ...

Page 6

MOSFET has turned off. PVCC Provide a bias supply for the lower gate drive to this pin. VCC Provide a 12V bias supply for the chip to ...

Page 7

V . When the voltage across the upper IN MOSFET (also referenced exceeds the voltage IN across R , the overcurrent function initiates a soft-start OCSET sequence. The soft-start function discharges C 10µA current ...

Page 8

BOOT D1 C BOOT ISL6522A PHASE SS +12V VCC C VCC C SS GND FIGURE 6. PRINTED CIRCUIT BOARD SMALL SIGNAL LAYOUT GUIDELINES Feedback Compensation Figure 7 highlights the voltage-mode control loop for a synchronous rectified buck converter. The output ...

Page 9

20LOG (R2/R1) 20 20LOG (V /∆ MODULATOR -20 GAIN - ESR -60 10 100 1K 10K 100K FREQUENCY (Hz) FIGURE 8. ASYMPTOTIC BODE ...

Page 10

The RMS current rating requirement for the input capacitor of a buck regulator is approximately 1/2 the ...

Page 11

... HIP6006 and ISL6522A controllers, the circuit can be implemented using the ISL6522A controller without any modifications. Detailed information on the circuit, including a complete bill of materials and circuit board description, can be found in Application Note AN9722. See Intersil’s home page on the web: http://www.intersil.com. C12 C19 1µ ...

Page 12

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α µ 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in ...

Page 13

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Related keywords

isl6522
isl6520
isl6526
isl6527
isl6558
isl6522b
isl6545
isl6520a
isl6524
isl6551
isl6521
isl6535
isl6540
isl6524cb
isl6529
isl6522cb
isl6522a
isl6522ibz
isl6522cbz
isl6522cbza
ISL6522ACR datasheet
ISL6522ACR data sheet
ISL6522ACR pdf datasheet
ISL6522ACR component
ISL6522ACR part
ISL6522ACR distributor
ISL6522ACR RoHS
ISL6522ACR datasheet download