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参数资料
| 型号： | IR3502AMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 23/38页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CTRL VR11.0/1 32-MLPQ |
| 标准包装： | 1 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 8mA |
| 电源电压： | 8 V ~ 16 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： | IR3502AMTRPBFDKR |
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IR3502A
In the event of a high side MOSFET short before power up, the OVP flag is activated with as little supply voltage as
possible, as shown in Figure 14. The VOSEN+ pin is compared against a fixed voltage of 1.73V (typical) for OVP
conditions at power-up. The ROSC/OVP pin will be pulled higher than 1.6V with VCCLDRV voltage as low as 1.8V.
An external MOSFET or comparator should be used to disable the silver box, activate a crowbar, or turn off the supply
source. The 1.8V threshold is used to prevent false over-voltage triggering caused by pre-charging of output
capacitors.
Pre-charging of converter may trigger OVP. If the converter output is pre-charged above 1.73V as shown in Figure 15,
ROSC/OVP pin voltage will be higher than 1.6V when VCCLDRV voltage reaches 1.8V. ROSC/OVP pin voltage will
be VCCLDRV-1V and rise with VCCLDRV voltage until VCCL is above UVLO threshold, after which ROSC/OVP pin
voltage will be VCCL-1V. The converter cannot start unless the over voltage condition stops and VCCL is cycled. If
the converter output is pre-charged 130mV above VDAC but lower than 1.73V, as shown in Figure 16, the converter
will soft start until SS/DEL voltage is above 3.92V (4.0V-0.08V). Then, over voltage comparator is activated and fault
latch is set.
VID
(FAST
VDAC)
VDAC
OV
1.73V
THRESHOLD
VDAC + 130mV
OUTPUT
VOLTAGE
(VO)
VDAC
50mV
50mV
NORMAL
OPERATION
VID DOWN
LOW VID
VID UP
NORMAL
OPERATION
Figure 17 Over-voltage protection during dynamic VID
During dynamic VID down, OVP may be triggered when output voltage can not follow VDAC voltage change at light
load with large output capacitance. Therefore, over-voltage threshold is raised to 1.73V from VDAC+130mV
whenever dynamic VID is detected and the difference between output voltage and VDAC is more than 50mV, as
shown in Figure 19. The over-voltage threshold is changed back to VDAC+130mV if the difference is smaller than
50mV.
VID Fault Codes
VID codes of 0000000X and 1111111X for VR11 will set the fault latch and disable the error amplifier. A 1.3us delay
is provided to prevent a fault condition from occurring during Dynamic VID changes. A VID FAULT condition is
latched with boot voltage and can only be cleared by cycling power to VCCL or re-issuing ENABLE.
Voltage Regulator Ready (PGOOD)
The PGOOD pin is an open-collector output and should be pulled up to a voltage source through a resistor. After
the soft start completion cycle, the PGOOD remains high until the output voltage is in regulation and SS/DEL is
above 3.92V. The PGOOD pin becomes low if the fault latch, over voltage latch, open sense line latch, or open
daisy chain
Page 23 of 38
December 17, 2009
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| 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 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3502B | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502BMTRPBF | 功能描述:开关变换器、稳压器与控制器 X-PHASE CONTROL IC AMD SVID CTRL IC 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 |
| IR3502MPBF | 制造商:International Rectifier 功能描述:IR3502 Series 16 V 1.65 MHz Surface Mount XPHASE3TM Control IC- MLPQ-32 制造商:IR 功能描述:IR3502 Series 16 V 1.65 MHz Surface Mount XPHASE3TM Control IC- MLPQ-32 |
| IR3502MPBFTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502MTRPBF | 功能描述:开关变换器、稳压器与控制器 COMPLETE VR11.0 OR VR11.1 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 |
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