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FAN5018B 데이터시트 PDF




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부품번호 FAN5018B 기능
기능 6-Bit VID Controller 2-4 Phase VR10.X Controller
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FAN5018B 데이터시트, 핀배열, 회로
www.fairchildsemi.com
www.DataSheet4U.com
FAN5018B
6-Bit VID Controller 2-4 Phase VR10.X Controller
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 RDS(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
VIN
Φ1 FAN5009
Φ2
FAN5018B
Φ3
Φ4 FAN5009
VIN
VOUT
REV. 1.0.0 Jul/15/05




FAN5018B pdf, 반도체, 판매, 대치품
FAN5018B
PRODUCT SPECIFICATION
www.DaAtabSsheoelt4uUt.ecomMaximum Ratings
Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life impaired. Func-
tional operation under these conditions is not implied.
Parameter
Min.
Max.
Units
Supply Voltage: VCC to GND
-0.3 +15
V
Voltage on FBRTN pin
-0.3 +0.3
V
Voltage on SW1-SW4 (<250ns duration)
-5 +25 V
Voltage on SW1-SW4 (>=250ns duration)
-0.3 +15
V
Voltage on RAMPADJ, CSSUM
-0.3 VCC+0.3
V
Voltage on any other pin
-0.3 +5.5
V
Thermal Information
Parameter
Operating Junction Temperature (TJ)
Storage Temperature
Lead Soldering Temperature, 10 seconds
Vapor Phase, 60 seconds
Infrared, 15 seconds
Power Dissipation (PD) @ TA = 25°C
Thermal Resistance (θJA) (See Note 1)
Min. Typ Max. Units
0 +150 °C
–65 +150 °C
+300 °C
+215 °C
+220 °C
2W
50 °C/W
Recommended Operating Conditions (See Figure 8)
Parameter
Supply Voltage VCC
Ambient Operating Temperature
Operating Junction Temperature (TJ)
Note:
1: θJA is defined as 1 oz. copper PCB with 1 in2 pad.
Conditions
VCC to GND
Min.
10.2
0
0
Typ.
12
Max.
13.8
+85
+125
Units
V
°C
4 REV. 1.0.0 Jul/15/05

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FAN5018B 전자부품, 판매, 대치품
PRODUCT SPECIFICATION
FAN5018B
www.DaEtalSehcetert4icU.acolmSpecifications (continued)
(VCC = 12V, TA = 0°C to +85°C and FBRTN=GND, using circuit in Figure 1, unless otherwise noted.)
The denotes specifications which apply over the full operating temperature range.
Parameter
Power Good Delay Time
Initial Start Up
VID Code Changing
VID Code Static
Crowbar Trip Point
Crowbar Reset Point
Crowbar Delay Time
VID Code Changing
VID Code Static
PWM Outputs
Output Voltage Low
Output Voltage High
Input Supply
DC Supply Current
UVLO Threshold
UVLO Hysteresis
UVLO Threshold
Symbol
VCROWBAR
tCROWBAR
VOL(PWM)
VOH(PWM)
VUVLO
Conditions
Relative to Nominal DAC Output
Relative to FBRTN
Over voltage to PWM Going Low
IPWM(SINK) = 400µA
IPWM(SOURCE) = 400µA
EN = Logic High
Vcc Rising (Vcc = 12V input)
Falling
Min. Typ. Max. Units
1
100 250
200
10
ms
µs
ns
180 300 400 mV
570 700 830 mV
100 250 500
400 600
µs
ns
160 500 mV
4
5 5.5
V
5 10
6.5 6.9 8.1
0.7
5.6
7.1
mA
V
V
Notes:
1. All limits at operating temperature extremes are guaranteed by design, characterization and statistical quality control
2. Guaranteed by design – NOT tested in production.
REV. 1.0.0 Jul/15/05
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부품번호상세설명 및 기능제조사
FAN5018B

6-Bit VID Controller 2-4 Phase VR10.X Controller

Fairchild Semiconductor
Fairchild Semiconductor

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