参数资料
| 型号： | IR3510MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 25/36页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CONTROL 32-MLPQ |
| 标准包装： | 100 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 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： | 剪切带 (CT) |
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IR3510
Under Voltage Lock Out
There are two UVLOs, UVLO1 for Vcc and UVLO2 for P12V which is the voltage after the input FET. The UVLO1
for Vcc has the start threshold of 9V and stop threshold of 8.2V. It controls the Charge Pump, the enable of the
input FET, and the reset of the input fault latch. Any fault latch can be reset by cycling either Enable or Vcc.
The UVLO2 for P12V has the start threshold of 8.9V and the stop threshold of 8.1V. The UVLO2 threshold tracks
the UVLO1 threshold to make sure the input FET is turned on without larger voltage droop across the input FET.
The UVLO2 controls the input soft-start regulator, second soft-start cycle, and the turn-on of the voltage regulator
output.
Input FET Short Detection
Detecting a failed input FET is critical for hot-swap and OVP. But, it’s hard to detect when it is turned on, since its
failure mode is shorted. A logic circuit is added to detect the P12V voltage before enabling the input FET. If it’s
above the UVLO2 threshold before the input FET is turned on, it declares the input FET shorted and latches the
fault.
Over-Voltage Protection
The OVP comparator compares the voltage on the “OVPSET” pin and the voltage on the “OVPSNS” pin. The
“OVPSET” voltage from the system sets the threshold of the OVP. The “OVPSNS” voltage is directly from the
remote sense amplifier output “VO”, or through a resistor divider to match the “OVPSET” voltage.
Once the OV condition is detected, it turns on the “Body-Braking Disable” circuit first to turn on all the bottom FETs.
After 5uS delay, it turns off the input FET and latches the fault.
In a redundant system, the OV condition can be caused by any of the paralleled voltage regulators. In order to
isolate the bad module but still keep the system running, “ORING” signal is used to determine which module is
causing the OV, since only the bad module is having HIGH “ORING” signal. So, only the bad module will be
disabled and latched off. All the good modules will resume supplying the load once the bad module is isolated and
the OV condition is removed.
Fig. 14a shows the OVP response in a bad module, and Fig. 14b shows the OVP response in a good module.
12V IN
Enable
UVLO2 Vth
P12V
UVLO2
3.8V
3.6V
Vss
1.3V
Bot FET On
EAOUT
Vout
VRRDY
ORING
Iout
VRM
OVP Vth
Vset
Soft-Start
Normal Operation
OVP
VRM OVP Latch Reset Fault Latch
Fig. 14a Bad module OVP response
Page 25 of 36
IR Confidential
May 18, 2009
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相关代理商/技术参数 |
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| IR3510MTRPBF | 功能描述:热插拔功率分布 HOT-SWAP N+1 XPHASE CTRL IC RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| IR3513MTRPBF | 功能描述:开关变换器、稳压器与控制器 2 CH OR 2 PHASE SYNC PWM CNTRLR 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 |
| IR3513XMTRPBF | 功能描述:功率驱动器IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR3513Z | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM POL CONTROL IC |
| IR3513ZMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM POL CONTROL IC |
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