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ISL6219ACA Datasheet

  • ISL6219ACA

  • Microprocessor CORE Voltage Regulator Precision Multi-Phase ...

  • 17頁

  • INTERSIL   INTERSIL

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ISL6219A
Data Sheet
November 2002
FN9093
Microprocessor CORE Voltage Regulator
Precision Multi-Phase BUCK PWM
Controller for Mobile Applications
The ISL6219A provides core-voltage regulation by driving up
to three interleaved synchronous-rectified buck-converter
channels in parallel. Intersil multi-phase controllers together
with ISL6207 gate drivers form the basis for the most reliable
power-supply solutions available to power the latest
industry-leading microprocessors. Multi-phase buck-
converter architecture uses interleaved timing to multiply
ripple frequency and reduce input and output ripple currents.
Lower ripple results in lower total component cost, reduced
dissipation, and smaller implementation area. Pre-
configured for 3-phase operation, the ISL6219A offers the
flexibility of 2-phase operation. Simply connect the unused
PWM pin to +5V. The channel switching frequency is
adjustable in the range of 100kHz to 1.5MHz giving the
designer the ultimate flexibility in managing the balance
between high-speed response and good thermal
management.
New features on the ISL6219A include Dynamic-VID鈩?/div>
technology allowing seamless on-the-fly VID changes with
no need for any additional external components. When the
ISL6219A receives a new VID code, it incrementally steps
the output voltage to the new level. Dynamic VID鈩?changes
are fast and reliable with no output voltage overshoot or
undershoot.
Like other Intersil multiphase controllers, the ISL6219A uses
cost and space-saving r
DS(ON)
sensing for channel current
balance and dynamic voltage positioning. Channel current
balancing is automatic and accurate with the integrated
current-balance control system. Over current protection can
be tailored to any application with no need of additional
parts.
An integrated DAC decodes the 5-bit logic signal present at
VID0-VID4 and provides an accurate reference for precision
voltage regulation. The high-bandwidth error amplifier and
accurate voltage reference all work together to provide
better than 0.8% total system accuracy, and to enable the
fastest transient response available. A window comparator
toggles PGOOD if the output voltage moves out of range
and acts to protect the load in case of over voltage.
Features
鈥?Multi-Phase Power Conversion
鈥?Active Channel Current Balancing
鈥?Lossless current sense scheme
- Uses MOSFET鈥檚 R
DS(ON)
- Optional current sense method for higher precision
鈥?Precision CORE Voltage Regulation
-
鹵0.8%
System Accuracy Over Temperature
鈥?Microprocessor Voltage Identification Input
- Dynamic VID technology
- 5-Bit VID Input
- 1.100V to 1.850V in 25mV Steps
鈥?Programmable Droop Voltage
鈥?Fast Transient Recovery Time
鈥?Over Voltage, Under Voltage and Overcurrent Protection
鈥?Power-Good Output
鈥?2 or 3 Phase Operation
鈥?User selectable Switching Frequency of 100K - 1.5MHz
- 200KHz - 4.5MHz Effective Ripple Frequency
Ordering Information
PART NUMBER
ISL6219ACA
ISL6219ACA-T
TEMP. (
o
C)
-10 to 85
PACKAGE
28-Ld SSOP
PKG. NO.
M28.15
28 Lead SSOP Tape and Reel
ISL6219A (28 LEAD SSOP)
TOP VIEW
VID 0
VID 1
VID 2
VID 3
VID 4
NC
FS/EN
NC
FB
COMP
NC
NC
NC
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
NC
NC
PGOOD
NC
ISEN1
PWM1
PWM2
ISEN2
ISEN3
PWM3
NC
VSEN
NC
1
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 registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Dynamic VID is a trademark of Intersil Americas Inc

ISL6219ACA 產(chǎn)品屬性

  • 48

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電壓模式

  • 3

  • 1.5MHz

  • 75%

  • 4.75 V ~ 5.25 V

  • 是

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • -10°C ~ 85°C

  • 28-SSOP（0.154"，3.90mm 寬）

  • 管件

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