- 您现在的位置：买卖IC网 > PDF目录1809 > IR3500VMTRPBF (International Rectifier)IC XPHASE3 CTLR VR11.1 32-MLPQ PDF资料下载
参数资料
| 型号： | IR3500VMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 17/34页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE3 CTLR VR11.1 32-MLPQ |
| 标准包装： | 1 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 6.5mA |
| 电源电压： | 4.75 V ~ 7.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-MLPQ（5x5） |
| 包装： | 标准包装 |
| 其它名称： | IR3500VMTRPBFDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页
IR3500V
The delay is required since over-current conditions can occur as part of normal operation due to inrush current. If an
over-current occurs during soft start (before PGOOD is asserted), the SS/DEL voltage is regulated by the over
current amplifier to limit the output current below the threshold set by OCSET voltage. If the over-current condition
persists after delay time is reached, the fault latch will be set pulling the error amplifier’s output low and inhibiting
switching in the phase ICs. The SS/DEL capacitor will discharge until it reaches 0.2V and the fault latch is reset
allowing a normal soft start to occur. If an over-current condition is again encountered during the soft start cycle, the
constant over-current control actions will repeat and the converter will be in hiccup mode. The delay time is
controlled by a counter which is triggered by clock. The counter values vary with switching frequency per phase in
order to have a similar delay time for different switching frequencies.
ENABLE
INTERNAL
OC DELAY
4.0V
3.92V
3.88V
SS/DEL
1.1V
EA
VOUT
VRRDY
OCP THRESHOLD
IOUT
START-UP WITH
OUTPUT SHORTED
HICCUP OVER-CURRENT
PROTECTION (OUTPUT
SHORTED)
NORMAL
START-UP
OCP
DELAY
OVER-CURRENT
PROTECTION
(OUTPUT SHORTED)
NORMAL NORMAL
START-UP OPERATION POWER-DOWN
NORMAL
(OUTPUT
OPERATION SHORTED)
Figure 13 - Over Current Protection waveforms during and after soft start
Over-Current Hiccup Protection after Soft Start
The over current limit threshold is set by a resistor connected between OCSET and VDAC pins. Figure 13 shows
the constant over-current control with delay after PGOOD is asserted. The delay is required since over-current
conditions can occur as part of normal operation due to load transients or VID transitions.
If the IIN pin voltage, which is proportional to the average current plus VDAC voltage, exceeds the OCSET voltage
after PGOOD is asserted, it will initiate the discharge of the capacitor at SS/DEL. The magnitude of the discharge
current is proportional to the voltage difference between IIN and OCSET and has a maximum nominal value of
55uA. If the over-current condition persists long enough for the SS/DEL capacitor to discharge below the 120mV
offset of the delay comparator, the fault latch will be set pulling the error amplifier’s output low and inhibiting
switching in the phase ICs and de-asserting the PGOOD signal. The output current is not controlled during the
delay time. The SS/DEL capacitor will discharge until it reaches 200 mV and the fault latch is reset allowing a
normal soft start to occur. If an over-current condition is again encountered during the soft start cycle, the over-
current action will repeat and the converter will be in hiccup mode.
Page 17 of 34
July 28, 2008
相关PDF资料 |
PDF描述 |
|---|---|
| IR3502AMTRPBF | IC XPHASE CTRL VR11.0/1 32-MLPQ |
| IR3502BMTRPBF | IC REG XPH INTEL VR11.1 32-MLPQ |
| IR3502MTRPBF | IC XPHASE3 CONTROLLER 32-MLPQ |
| IR3503MTRPBF | IC CTRL XPHASE VR11.0/1 32-MLPQ |
| IR3504MTRPBF | IC CTRL XPHASE3 SVID 32-MLPQ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3502 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502_09 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502A | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502AMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502AMTRPBF | 功能描述:IC XPHASE CTRL VR11.0/1 32-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase3™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。