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參數(shù)資料
| 型號： | FAN5019 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 6-Bit VID Controller 2-4 Phase VRM10.X Controller |
| 中文描述： | 6西元控制器2-4位控制器相VRM10.X |
| 文件頁數(shù)： | 1/30頁 |
| 文件大?。?/td> | 781K |
| 代理商： | FAN5019 |
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www.fairchildsemi.com
REV. 1.0.7 1/5/04
Features
Pin and Function Backward Compatible with FAN53168
and FAN53180 Controllers
Precision Multi-Phase DC-DC Core Voltage Regulation
– ±10mV 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 Load-Line Programming (Meets Intel
VRM/VRD10.0 and 10.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
Applications
Computer DC/DC Converter VRM/VRD10.0
Computer DC/DC Converter VRM/VRD10.X
Computer DC/DC Converter VRM/VRD9.X
High Current, Low Voltage DC/DC Rail
General Description
The FAN5019 is a multi-phase DC-DC controller for imple-
menting high-current, low-voltage, CPU core power regula-
tion circuits. It is part of a chipset that includes external
MOSFET drivers and power MOSFETS. The FAN5019
drives up to four synchronous-rectified buck channels in par-
allel. The multi-phase buck converter architecture uses inter-
leaved switching to multiply ripple frequency 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 FAN5019 features a high bandwidth control loop to
provide optimal response to load transients. The FAN5019
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. The operating temperature range is 0°C to
+85°C and the operating voltage is a single +12V supply,
which simplifies the design. The FAN5019 is available in a
TSSOP-28 package.
Block Diagram
FAN5019
V
IN
V
IN
Φ
1
Φ
4
V
OUT
Φ
3
Φ
2
FAN5009
FAN5009
FAN5019
6-Bit V ID Controller 2-4 Phase V RM10.X Controller
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5019_ABC3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 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: |
| FAN5019B | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:6-Bit VID Controller 2-4 Phase VR10.X Controller |
| FAN5019BMTCX | 功能描述:DC/DC 開關(guān)控制器 ANG FG PWM 4 pases controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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