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参数资料
| 型号： | IR3504MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 23/42页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 SVID 32-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 10mA |
| 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： | 带卷 (TR) |
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IR3504
Open Control Loop Detection
The output voltage range of error amplifier is continuously monitored to ensure the voltage loop is in regulation. If
any fault condition forces the error amplifier output above VCCL-1.08V for 8 PHSOUT switching cycles, the fault
latch is set. The fault latch can only be cleared by cycling the power to VCCL.
Load Current Indicator Output
The VDRP pin voltage represents the average current of the converter plus the DAC voltage. The load current
information can be retrieved by using a differential amplifier to subtract VDAC1 voltage from the VDRP1 voltage.
Enable Input
Pulling the ENABLE pin below 0.8V sets the Fault Latch. Forcing ENABLE to a voltage above 1.94V results in the
pre-PWROK 2 bit VID codes off the SVD and SVC pins to be read and stored. SS/DEL X pins are also allowed to
begin their power-up cycles.
Over Voltage Protection (OVP)
Output over-voltage might occur due to a high side MOSFET short or if the output voltage sense path is
compromised. If the over-voltage protection comparators sense that either VOUT X pin voltage exceeds VDAC X by
240mV, the over voltage fault latch is set which pulls the error amplifier output low to turn off the converter power
stage. The IR3504 communicates an OVP condition to the system by raising the ROSC/OVP pin voltage to within
V(VCCL) – 1.2 V. An OVP condition is also communicated to the phase ICs by forcing the IIN pin (which is tied to
the ISHARE bus and ISHARE pins of the phase ICs) to VCCL as shown in Figure 15. In each phase IC, the OVP
circuit overrides the normal PWM operation to ensure the low side MOSFET turn-on within approximately 150ns.
The low side MOSFET will remain on until the ISHARE pins fall below V(VCCL) - 800mV. An over voltage fault
condition is latched in the IR3504 and can only be cleared by cycling the power to VCCL.
During dynamic VID down at light to no load, false OVP triggering is prevented by increasing the OVP threshold to a
fixed 1.6V whenever a dynamic VID is detected and the difference between output voltage and the fast internal
VDAC is more than 50mV, as shown in Figure 16. The over-voltage threshold is changed back to VDAC+240mV if
the difference between output voltage and the fast internal VDAC is less 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 thus providing 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.
Page 23
July 28, 2009
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| IR3505ZMTRPBF | IC XPHASE3 CTLR 2.5A 16-MLPQ |
| IR3506MTRPBF | IC CTRL XPHASE3 DDR 16-MLPQ |
| IR3507MTRPBF | IC XPHASE3 CONTROL 20-MLPQ |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3505 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3505MPBF | 功能描述:IC XPHASE3 CONTROL 16-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 |
| IR3505MTRPBF | 功能描述:开关变换器、稳压器与控制器 XPHASE3 DDR VTT 7V 2A 3 Wire RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3505Z | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3505ZMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
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