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參數(shù)資料
| 型號(hào)： | FN9012 |
| 廠商： | Intersil Corporation |
| 英文描述： | Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller |
| 中文描述： | 微處理器核心電壓調(diào)節(jié)兩相降壓PWM控制器 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 45K |
| 代理商： | FN9012 |
1
TM
Microprocessor CORE Voltage Regulator
Two-Phase Buck PWM Controller
The ISL6562 two-phase current mode, PWM control IC
together with companion gate drivers, the HIP6601A,
HIP6602A, HIP6603A or HIP6604 and MOSFETs provides a
precision voltage regulation system for advanced
microprocessors. Two-phase power conversion is a marked
previously employed to satisfy the ever increasing current
demands of modern microprocessors. Multi-phase
converters, by distributing the power and load current results
in smaller and lower cost transistors with fewer input and
output capacitors. These reductions accrue from the higher
effective conversion frequency with higher frequency ripple
current due to the phase interleaving process of this
topology. For example, a two phase converter operating at
350kHz per phase will have a ripple frequency of 700kHz.
Moreover, greater converter bandwidth of this design results
in faster response to load transients.
Outstanding features of this controller IC include
programmable VID codes from the microprocessor that
range from 1.050V to 1.825V with an accuracy of
±
0.8%.
Pull up currents on these VID pins eliminates the need for
external pull up resistors.
Another feature of this controller IC is the PWRGD monitor
circuit which is held low until the CORE voltage increases, to
within 18% of the programmed voltage. Over-voltage, 24%
above programmed CORE voltage, results in the PWRGD
output going low to indicate that the CORE is above the
specified limit. Under voltage is also detected and results in
PWRGD going low if the CORE voltage falls 18% below the
programmed level. Over-current protection folds back the
output voltage to 95mV, reducing the regulator dissipation.
These features provide monitoring and protection for the
microprocessor and power system.
Features
Two-Phase Power Conversion
Precision Channel Current Sharing
Precision CORE Voltage Regulation
-
±
0.8% Accuracy
Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 1.050V to 1.825V in 25mV Steps
- Programmable “Droop” Voltage
Fast Transient Recovery Time
Over Current Protection
High Ripple Frequency, (Channel Frequency
Times Number of Channels). . . . . . . . . . . . .100kHz to 2MHz
Applications
VRM8.5 Modules
Intel Tualatin Processor Voltage Regulator
Low Output Voltage, High Current DC/DC Converters
Related Literature
Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Pinout
ISL6562 (SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. (
o
C)
PACKAGE
PKG. NO.
ISL6562CB
0 to 70
16 Ld SOIC
M16.15
ISL6562CB-T
16 Ld SOIC Tape and Reel
ISL6560/62EVAL1
Evaluation Platform
VID3
VID2
VID1
VID0
VID25mV
CT
PWRGD
REF
PWM1
PWM2
VCC
FB
CS-
COMP
CS+
GND
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
File Number
9012
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.
Intel is a registered trademark of Intel Corporation.
|
Copyright Intersil Americas Inc. 2001, All Rights Reserved
ISL6562
Data Sheet
March 2001
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