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参数资料
| 型号： | IR3529MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 15/22页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE CPU/ASIC 20-MLPQ |
| 标准包装： | 1 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 2mA |
| 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： | 20-MLPQ |
| 供应商设备封装： | 20-MLPQ（4x4） |
| 包装： | 标准包装 |
| 其它名称： | IR3529MTRPBFDKR |
IR3529
OUTPUT
OVP
VOLTAGE
(VO)
THRESHOLD
130mV
VCCL-800 mV
IOUT(ISHARE)
GATEH
(PHASE IC)
GATEL
(PHASE IC)
FAULT
LATCH
ERROR
AMPLIFIER
OUTPUT
(EAOUT)
VDAC
NORMAL OPERATION
OVP CONDITION
AFTER
OVP
Figure 8: Over-voltage protection waveforms
Over Voltage Protection (OVP)
The IR3529 includes over-voltage protection that turns on the low side MOSFET to protect the load in the event of
a shorted high-side MOSFET, converter out of regulation, or connection of the converter output to an excessive
output voltage. As shown in Figure 8, if IOUT pin voltage is above V(VCCL) – 0.8V, which represents over-voltage
condition detected by control IC, the over-voltage latch is set. GATEL drives high and GATEH drives low. The OVP
circuit overrides the normal PWM operation and within approximately 150ns will fully turn-on the low side
MOSFET, which remains in conduction until IOUT drops below V(VCCL) – 0.8V when over voltage ends. The over
voltage fault is latched in control IC and can only be reset by cycling the power to control IC. The error amplifier
output (EAIN) is pulled down by control IC and will remain low. The lower MOSFETs alone can not clamp the
output voltage however a SCR or N-MOSFET could be triggered with the OVP output to prevent processor
damage.
Operation at Higher Output Voltage
The proper operation of the phase IC is ensured for output voltage up to 5.1V. Similarly, the minimum VCC for
proper operation of the phase IC is 8 V. Operating below this minimum voltage, the current sharing performance of
the phase IC is affected.
Page 15 of 22
February 12, 2010
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相关代理商/技术参数 |
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|---|---|
| IR3531A | 制造商:IRF 制造商全称:International Rectifier 功能描述:41 Phase Dual Output Control IC Pre-bias compatible |
| IR3531A-MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:41 Phase Dual Output Control IC Pre-bias compatible |
| IR3531AMTRPBF | 制造商:International Rectifier 功能描述:4+1 DUAL OUPUT CONTROLLER IC WITH I2C - Tape and Reel 制造商:International Rectifier 功能描述:IC OUTPUT CTRL 4+1 PHASE 48MLPQ 制造商:International Rectifier 功能描述:T&R / 4+1 Dual Ouput Controller IC with I2C |
| IR3531A-MTRPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:41 Phase Dual Output Control IC Pre-bias compatible |
| IR3531MTRPBF | 制造商:International Rectifier 功能描述:4+1 DUAL OUPUT CONTROLLER IC WITH I2C - Tape and Reel 制造商:International Rectifier 功能描述:IC OUTPUT CTRL 4+1 PHASE 48MLPQ 制造商:International Rectifier 功能描述:4 1 Dual Ouput Contr IC with I2C 制造商:International Rectifier 功能描述:T&R / 4+1 Dual Ouput Controller IC with I2C |
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