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IRU3018 の電気的特性と機能

IRU3018のメーカーはInternational Rectifierです、この部品の機能は「5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 IRU3018
部品説明 5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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IRU3018 Datasheet, IRU3018 PDF,ピン配置, 機能
Data Sheet No. PD94144
IRU3018
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC,
LDO CONTROLLER AND 200mA ON-BOARD LDO REGULATOR
FEATURES
Provides single chip solution for Vcore, GTL+ & clock
supply
200mA On-Board LDO Regulator
Designed to meet the latest Intel specification for
Pentium II
On-Board DAC programs the output voltage from
1.3V to 3.5V
Linear regulator controller on board for 1.5V GTL+
supply
Loss-less Short Circuit Protection with HICCUP
Synchronous operation allows maximum efficiency
patented architecture allows fixed frequency opera-
tion as well as 100% duty cycle during dynamic
load
Soft-Start
High current totem pole driver for direct driving of the
external power MOSFET
Power Good Function monitors all outputs
Over-Voltage Protection circuitry protects the
switcher output and generates a fault signal
Thermal Shutdown
Logic Level Enable Input
APPLICATIONS
Total Power Solution for Pentium II processor
application
DESCRIPTION
The IRU3018 controller IC is specifically designed to meet
Intel specification for Pentium IImicroprocessor appli-
cations as well as the next generation of P6 family pro-
cessors. The IRU3018 provides a single chip controller
IC for the Vcore, LDO controller for GTL+ and an internal
200mA regulator for clock supply which are required for
the Pentium II applications. These devices feature a pat-
ented topology that in combination with a few external
components as shown in the typical application circuit,
will provide in excess of 18A of output current for an on-
board DC-DC converter while automatically providing the
right output voltage via the 5-bit internal DAC. The
IRU3018 also features loss-less current sensing for both
switchers by using the RDS(ON) of the high-side power
MOSFET as the sensing resistor, internal current limit-
ing for the clock supply, and a Power Good window com-
parator that switches its open collector output low when
any one of the outputs is outside of a pre-programmed
window. Other features of the device are: Under-voltage
lockout for both 5V and 12V supplies, an external pro-
grammable soft-start function, programming the oscilla-
tor frequency via an external resistor, Over-Voltage Pro-
tection (OVP) circuitry for both switcher outputs and an
internal thermal shutdown.
TYPICAL APPLICATION
5V
Note: Pentium II is trademark of Intel Corp
3.3V
VOUT3
IRU3018
SWITCHER1
CONTROL
LINEAR
CONTROL
LINEAR
REGULATOR
VOUT1
VOUT2
Figure 1 - Typical application of IRU3018.
PACKAGE ORDER INFORMATION
TA (8C)
0 To 70
DEVICE
PACKAGE
IRU3018CW 24-Pin Plastic SOIC WB
Rev. 1.6
07/16/02
www.irf.com
1

1 Page





IRU3018 pdf, ピン配列
PARAMETER
Current Limit Section
CS Threshold Set Current
CS Comp Offset Voltage
Hiccup Duty Cycle
Output Drivers Section
Rise Time
Fall Time
Dead Band Time Between
High Side and Synch Drive
Vcore Switcher Only
2.5V Regulator (VOUT2)
Reference Voltage
Reference Voltage
Dropout Voltage
Load Regulation
Line Regulation
Input Bias Current
Output Current
Current Limit
Thermal Shutdown
1.5V Regulator (VOUT3)
Reference Voltage
Reference Voltage
Input Bias Current
Output Drive Current
Power Good Section
Core UV Lower Trip Point
Core UV Upper Trip Point
Core UV Hysterises
Core OV Upper Trip Point
Core OV Lower Trip Point
Core OV Hysterises
Fb2 Lower Trip Point
Fb2 Upper Trip Point
Fb3 Lower Trip Point
Fb3 Upper Trip Point
Power Good Output LO
Power Good Output HI
Fault (Overvoltage) Section
Core OV Upper Trip Point
Core OV Lower Trip Point
VIN2 Upper Trip Point
VIN2 Lower Trip Point
Fault Output HI
Soft-Start Section
Pull-Up Resistor to 5V
Enable Section
En Pin Input LO Voltage
En Pin Input HI Voltage
En Pin Input LO Current
En Pin Input HI Current
SYM
TEST CONDITION
Css=0.1mF
CL=3000pF
CL=3000pF
CL=3000pF
VO2 TA=258C, VOUT2=Fb2
Io=200mA
1mA< Io <200mA
3.1V<VIN2<4V, Vo=2.5V
VO3 TA=258C, Gate3=Fb3
VSEN1 Ramping Down
VSEN1 Ramping Up
VSEN1 Ramping Up
VSEN1 Ramping Down
Fb2 Ramping Down
Fb2 Ramping Up
Fb3 Ramping Down
Fb3 Ramping Up
RL=3mA
RL=5K, Pull-Up to 5V
VSEN1 Ramping Up
VSEN1 Ramping Down
VIN2 Ramping Up
VIN2 Ramping Down
Io=3mA
OCSet=0V, Phase=5V
VEN(L)
VEN(H)
Regulator OFF
Regulator ON
VEN=0V to 0.8V
VEN=2V to 5V
Note 1: Vs refers to the set point voltage given in Table 1
Rev. 1.6
07/16/02
www.irf.com
IRU3018
MIN TYP MAX UNITS
200 mA
-5 +5 mV
10 %
70 ns
70 ns
200 ns
1.260
1.260
0.6
0.5
0.2
200
300
145
2
1.260
1.260
50
2
0.90Vs
0.92Vs
0.02Vs
1.10Vs
1.08Vs
0.02Vs
0.95
1.05
0.95
1.05
0.4
4.8
1.17Vs
1.15Vs
4.3
4.2
10
23
0.8
2
0.01
20
V
V
V
%
%
mA
mA
mA
8C
V
V
mA
mA
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
KV
V
V
mA
mA
3


3Pages


IRU3018 電子部品, 半導体
IRU3018
BLOCK DIAGRAM
En 17
V12 1
V5 8
VID0 6
VID1 5
VID2 4
VID3 3
VID4 2
VSEN1 19
Fb3 16
Gate3 15
VIN2 12
Enable
UVLO
Vset
5Bit
DAC
V12
1.26V
V5
VOUT2 13
Fb2 11
PGood 7
4.3V
1.17Vset
2.5V
1.1Vset
Over
Voltage
Vset
+
Slope
Comp
Enable
Soft
Start &
Fault
Logic
Enable
PWM
Control
Osc
V12
V12
Over
Current
200uA
18 Fb1
24 UGate1
22 LGate1
23 Phase1
20 OCSet1
0.9Vset
0.9V
10 Fault / Rt
9 SS
21 PGnd
14 Gnd
Figure 2 - Simplified block diagram of the IRU3018.
6 www.irf.com
Rev. 1.6
07/16/02

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
IRU3011

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC

International Rectifier
International Rectifier
IRU3013

VRM 8.5 COMPATIBLE 5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC

International Rectifier
International Rectifier
IRU3018

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC

International Rectifier
International Rectifier


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