參數(shù)資料
型號(hào)： IR3500MPBF
廠商： International Rectifier
英文描述： XPHASE3TM VR11.0 & AMD PVID CONTROL IC
中文描述： XPHASE3TM VR11.0
文件頁(yè)數(shù)： 26/47頁(yè)
文件大小： 778K
代理商： IR3500MPBF
IR3500
Page 26 of 47
June 12, 2007
VID + 0.13V
VCCL - 1V
SS/DEL
3.92V (4V-0.08V)
ROSC/OVP
OUTPUT
VOLTAGE
(VOSEN+)
VCCL+0.7V
VCCL+0.7V
0.6V
VCCLDRV
VCCL UVLO
1.73V
VCC
12V
Figure 18 - Over-voltage protection with pre-charging converter output VID + 0.13V <Vo < 1.73V
During dynamic VID down, OVP may be triggered when output voltage can not follow VDAC voltage change at light
load with large output capacitance. Therefore, over-voltage threshold is raised to 1.73V from VDAC+130mV
whenever dynamic VID is detected and the difference between output voltage and VDAC is more than 50mV, as
shown in Figure 19. The over-voltage threshold is changed back to VDAC+130mV if the difference is smaller than
50mV.
The overall system must be considered when designing for OVP. In many cases the over-current protection of the
AC-DC or DC-DC converter supplying the multiphase converter will be triggered and provide effective protection
without damage as long as all PCB traces and components are sized to handle the worst-case maximum current. If
this is not possible, a fuse can be added in the input supply to the multiphase converter.
Open Remote Sense Line Protection
The IR3500 checks for open remote sense lines every time it is enabled and will not power on if there is an open
sense line fault. If either remote sense line VOSEN+ or VOSEN- or both are open, the output of the remote sense
amplifier (VO) drops. The IR3500 monitors its VO pin voltage continuously during normal operation. If the VO
voltage is lower than 200 mV, two separate pulse currents are applied to VOSEN+ and VOSEN- pins respectively to
check if the sense lines are open. If VOSEN+ is open, a voltage higher than 90% of V(VCCL) will be present at
VOSEN+ pin and the output of open line detect comparator will be high. If VOSEN- is open, a voltage higher than
700mV will be present at VOSEN- pin and the output of open-line-detect comparator will be high. The open sense
line fault latch is set, which pulls the error amplifier output low immediately and shuts down the converter. The
SS/DEL voltage is discharged and the fault latch can only be reset by cycling VCCL power.
相關(guān)PDF資料
PDF描述
IR3500MTRPBF XPHASE3TM VR11.0 & AMD PVID CONTROL IC
IR3623MPBF HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING
IR3624MPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
IR3624MTRPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
IR4426 DUAL LOW SIDE DRIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IR3500MTRPBF 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 COMPLETE VR11.0 OR AMD PVID PWR SOLTION RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
IR3500V 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM VR11.1 CPU VTT CONTROL IC
IR3500VMPBF 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM VR11.1 CPU VTT CONTROL IC
IR3500VMTRPBF 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 X-PHASE IR3500V AMD SVID CTRL IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
IR3502 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM CONTROL IC
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