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參數資料
| 型號： | FAN5018B |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 6-Bit VID Controller 2-4 Phase VR10.X Controller |
| 中文描述： | 6期西元控制器2-4位的VR10.X控制器 |
| 文件頁數： | 1/30頁 |
| 文件大小： | 509K |
| 代理商： | FAN5018B |
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www.fairchildsemi.com
REV. 1.0.0 Jul/15/05
Features
Improved Noise Immunity
Improved Load Line Accuracy
TTL Compatible VID Inputs
Fully Pin and Function compatible with existing
FAN5018 and ADP3180 Controllers
Precision Multi-Phase DC-DC Core Voltage Regulation
– ±14mV Output Voltage Accuracy Over Temperature
Differential Remote Voltage Sensing
Selectable 2-, 3-, or 4-Phase Operation
Selectable VRM9 or VRM10 Operation
Up to 1MHz per Phase Operation (4MHz ripple
Frequency)
Lossless Inductor Current Sensing for Loadline
Compensation
– External Temperature Compensation
Accurate Loadline Programming (Meets Intel
VRM/VRD10.x CPU Specifications)
Accurate Channel-Current Balancing for Thermal
Optimization and Layout Compensation
Convenient 12V Supply Biasing
6-bit Voltage Identification (VID) Input
– .8375V to 1.600V in 12.5mV Steps
– Dynamic VID Capability with Fault-Blanking for
glitch-less Output voltage Changes
Adjustable Over Current Protection with Programmable
Latch-Off Delay. Latch-Off Function may be Disabled
Over-Voltage Protection – Internal OVP Crowbar
Protection
Package: 28L-TSSOP
Applications
VRM/VRD 9.x and 10.x Computer DC/DC Converter
High-Current, Low-Voltage DC/DC Rail
General Description
The FAN5018B is a multi-phase DC-DC controller for
implementing high-current, low-voltage, CPU core power
regulation circuits. It is part of a chipset that includes exter-
nal MOSFET drivers and power MOSFETS. The
FAN5018B drives up to four synchronous-rectified buck
channels in parallel. The multi-phase buck converter archi-
tecture uses interleaved switching to multiply ripple fre-
quency by the number of phases and reduce input and output
ripple currents. Lower ripple results in fewer components,
lower component cost, reduced power dissipation, and
smaller board area.
The FAN5018B features a high-bandwidth control loop to
provide optimal response to load transients. The FAN5018B
senses current using lossless techniques: Phase current is
measured through each of the output inductors. This current
information is summed, averaged and used to set the loadline
of the output via programmable "droop." The droop is tem-
perature compensated to achieve precise loadline character-
istics over the entire operating range. Additionally,
individual phase current is measured using the R
DS(ON)
of
the low-side MOSFETs. This information is used to dynam-
ically balance/steer per-phase current. The phase currents
are also summed and averaged for over-current detection.
Dynamic-VID technology allows on-the-fly VID changes
with controlled, glitch-less output. Additionally, short-circuit
protection, adjustable current limiting, over-voltage protec-
tion and power-good circuitry combine to ensure reliable and
safe operation. FAN5018B is specified over the commercial
temperature range of 0°C to +85°C and operates from a sin-
gle +12V supply which simplifies design. FAN5018B is
available in a 28L-TSSOP package.
Block Diagram
FAN5018B
V
IN
V
IN
Φ
1
Φ
4
V
OUT
Φ
3
Φ
2
FAN5009
FAN5009
FAN5018B
6-Bit VID Controller 2-4 Phase VR10.X Controller
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| FAN5018BMTCX | 6-Bit VID Controller 2-4 Phase VR10.X Controller |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN5018BMTCX | 功能描述:IC CTRLR DC-DC MULTIPH 28TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| FAN5019 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:6-Bit VID Controller 2-4 Phase VRM10.X Controller |
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| FAN5019_ABC3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5019_BBC3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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