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参数资料
| 型号： | IR3513ZMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 23/36页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 POL 32-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 3mA |
| 电源电压： | 8 V ~ 16 V |
| 工作温度： | 0°C ~ 125°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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NOT RECOMMENDED FOR NEW DESIGNS
REPLACEMENT PRODUCT – IR3513ZMTRPBF
IR3513
During a MARGIN up to a MARGIN down event (80mV excursion on VREF), OVP may be triggered since the OVP
threshold is a fixed 85mV above VREF. This can occur due to large output capacitance and light/no load operation
where the output voltage remains high while the OVP threshold falls.
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.
Error Amplifier Head Room Control
In high converter output voltage applications, there may not be enough head room in error amplifier and current
sense amplifiers of phase ICs when VCC is just above UVLO start and stop thresholds. A head room control circuit
is implemented to ensure V(VCC) – V(VO) > 2.5V by sourcing extra current to the resistor connecting to FB pin.
When this circuit is activated, the converter voltage is lower than the required and therefore the PG is also driven
low.
Open Remote Sense Line Protection
If either remote sense line VOSEN+ or VOSEN- or both is open, the output of remote sense amplifier (VOUT)
drops. The IR3513 monitors VO pin voltage continuously. If VOUT 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 400mV 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 error amplifier
output low immediately and shut down the converter. SS/DEL voltage is discharged, and the fault latch can only be
reset by cycling VCCL power.
Open Daisy Chain Protection
IR3513 checks the daisy chain every time it powers up. It starts a daisy chain pulse on the PHSOUT pin and detects
the feedback at PHSIN pin. If no pulse comes back after 30 CLKOUT pulses, the pulse is restarted again. If the
pulse fails to come back the second time, the open daisy chain fault is registered, and SS/DEL is not allowed to
charge. The fault latch can only be reset by cycling the power to VCCL.
After powering up, the IR3513 monitors PHSIN pin for a phase input pulse equal or less than the number of phases
detected. If PHSIN pulse does not return within the number of phases in the converter, another pulse is started on
PHSOUT pin. If the second started PHSOUT pulse does not return on PHSIN, an open daisy chain fault is
registered.
Phase Number Determination
After a daisy chain pulse is started, the IR3513 checks the timing of the input pulse at PHSIN pin to determine the
phase number.
Output Voltage Under-voltage Monitoring
The IR3513 compares the FB pin to a voltage, V, equal to 0.897×Vref. If the FB pin is 50mV (typical) below the
aforementioned V, the output voltage under-voltage monitor will trigger, pulling the PG pin low. The output voltage
under-voltage monitor does not effect switching of the phases or soft start.
Page 23
May 11, 2008
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3513ZMTRPBF-CUT TAPE | 制造商:IR 功能描述:IR3513 Series 16 V 3 mA Surface Mount XPhase3 POL Control IC - MLPQ-32 |
| IR3514 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM AMD HYBRID CONTROL IC |
| IR3514MPBF | 制造商:International Rectifier 功能描述: |
| IR3514MTRPBF | 功能描述:开关变换器、稳压器与控制器 COMPLETE AMD SVID OR PVID PWR SOLUTION 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 |
| IR3515SPBF | 制造商:International Rectifier 功能描述:MOSFET, Power;N-Ch;VDSS 150V;RDS(ON) 0.045Ohm;ID 41A;D2Pak;PD 200W;VGS +/-30V |
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