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参数资料
| 型号： | IR3080MTR |
| 厂商： | International Rectifier |
| 文件页数： | 17/41页 |
| 文件大小： | 0K |
| 描述： | IC PHASE CONTROLLER 32L MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 电流 - 电源： | 11mA |
| 电源电压： | 9.5 V ~ 14 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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IR3080
The over-current delay can be reduced by adding a resistor in series with the SS/DEL capacitor. The delay
comparator’s offset voltage is reduced by the drop in the resistor caused by the discharge current. The value of the
series resistor should be 10K ? or less to avoid interference with the soft start function.
If SS/DEL pin is pulled below 0.9V, the converter can be disabled.
VCC
(12V)
VIDPWR
(3.3V)
VCCVID
1.1V
8.9V
UVLO
(1.2V)
3.91V
VIDDEL
VIDPGD
3.91V
SS/DEL
1.3V
VOUT
PWRGD
OCP THRESHOLD
IOUT
START-UP
(VCCVID GATES
NORMAL OPERATION
(VOUT CHANGES DUE TO
OCP
DELAY
HICCUP OVER-CURRENT
PROTECTION
RE-START
AFTER OCP
POWER-DOWN
(VCC GATES
FAULT MODE)
LOAD AND VID CHANGES)
FAULT MODE)
Figure 11. Operating Waveforms
Under Voltage Lockout (UVLO)
The UVLO function monitors the IR3080’s VCC supply pin and ensures that IR3080 has a high enough voltage to
power the internal circuit. The IR3080’s UVLO is set higher than the minimum operating voltage of compatible
Phase ICs thus providing UVLO protection for them as well. During power-up the fault latch is reset when VCC
exceeds 9.1V and there is no other fault. If the VCC voltage drops below 8.9V the fault latch will be set. For
converters using a separate 5V supply for gate driver bias an external UVLO circuit can be added to prevent any
operation until adequate voltage is present. A diode connected between the 5V supply and the SS/DEL pin provides
a simple 5V UVLO function. UVLO of the VIDPWR input is provided by the VID Power Good function. Adequate
voltage must be present at VIDPWR pin to allow VCCVID to reach 1.1V.
Over Current Protection (OCP)
The current limit threshold is set by a resistor connected between the OCSET and VDAC pins. If the IIN pin voltage,
which is proportional to the average current plus DAC voltage, exceeds the OCSET voltage, the over-current
protection is triggered.
Page 17 of 41
9 /30/04
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3080MTRPBF | 功能描述:开关变换器、稳压器与控制器 XPHASE VRD10 CTRL IC CTRL IC 200 to 700mV 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 |
| IR3080PBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT |
| IR3081 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE VR 10.0 CONTROL IC |
| IR3081A | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
| IR3081AM | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
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