参数资料
| 型号： | IR3084AMPBF |
| 厂商： | International Rectifier |
| 文件页数： | 21/45页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CONTROL 28-MLPQ |
| 标准包装： | 100 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 电流 - 电源： | 14mA |
| 电源电压： | 9.5 V ~ 16 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-MLPQ |
| 供应商设备封装： | 28-MLPQ（5x5） |
| 包装： | 剪切带 (CT) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页当前第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页
IR3084A
Under Voltage Lockout (UVLO)
The UVLO function monitors the IR3084A’s VCC supply pin and ensures that there is adequate voltage to safely
power the internal circuitry. The IR3084A’s UVLO threshold is set higher than the minimum operating voltage of
compatible Phase ICs thus providing UVLO protection for them as well. UVLO at the Phase ICs is a function of
the Error Amplifier’s output voltage. When the IR3084A is in UVLO, the Error Amplifier is disabled and EAOUT is
at a very low voltage (<200mV) thus preventing the Phase ICs from becoming active.
During power-up, the IR3084A’s fault latch is reset when VCC exceeds 9.9V if there are no other faults. If the
VCC voltage drops below 9.1V the fault latch will be set.
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 phase current plus DAC voltage, exceeds the OCSET voltage, the
over-current protection is triggered.
VID = Fault Code (NO_CPU)
When VIDSEL is grounded or left floating, NO_CPU VID codes of 11111XX for VR10 and 0000000X, 1111111X
for VR11 will set both the VID Fault Latch and the Fault Latch to disable the error amplifier. The controller will be
latched OFF and a power-on reset (POR) will be required to produce a new soft start sequence. In these 2
modes, the NO_CPU codes are ignored during startup. See Table 1 for further details.
When VIDSEL is set to VBIAS (6.9V) or VCC (12V), NO_CPU VID codes of 11111XX for VR10 and 0000000X,
1111111X for VR11 will set the Fault Latch to disable the error amplifier but the VID Fault Latch will not be set.
The controller will not be latched OFF and a soft start sequence will be produced when the NO_CPU code is
removed and the SS/DEL voltage falls below 0.215V. In these 2 modes, the NO_CPU codes will be not be
ignored during startup. See Table 1 for further details.
A 1.3μs delay is provided to prevent a NO_CPU fault condition from occurring during Dynamic VID changes.
VRRDY (Power Good) Output
The VRRDY pin is an open-collector output and should be pulled up to a voltage source through a resistor.
During soft-start, the VRRDY output remains low until the converter’s output voltage is in regulation and SS/DEL
is above 3.77V. The VRRDY pin transitions low if the fault latch is set. A high level at the VRRDY pin indicates
that the converter is in operation and has no fault, but does not ensure the output voltage is within the
specification. Output voltage regulation within the design limits can logically be assured however, assuming no
component failure in the system.
Load Current Indicator Output
The VDRP pin voltage represents the average phase current of the converter plus the DAC voltage. The load
current can be retrieved by subtracting the VDAC voltage from the VDRP voltage.
Page 21 of 45
3/3/2009
相关PDF资料 |
PDF描述 |
|---|---|
| IR3084MTRPBF | IC CTLR XPHASE 28-MLPQ |
| IR3084UMPBF | IC XPHASE CONTROL 28-MLPQ |
| IR3086AMPBF | IC PHASE CONTROLLER OVP 20MLPQ |
| IR3086MPBF | IC CONTROLLER PHASE 20MLPQ |
| IR3087MPBF | IC XPHASE W/OVP/TM CTRL 20MLPQ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3084AMTRPBF | 功能描述:开关变换器、稳压器与控制器 VR10 VR11 Athlon64 XPHASE 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 |
| IR3084MPBF | 功能描述:IC XPHASE CONTROL 28-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| IR3084MTRPBF | 功能描述:开关变换器、稳压器与控制器 VR10 VR11 Athlon64 XPHASE 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 |
| IR3084U | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR10, VR11 & OPTERON/ATHLON64 CONTROL IC |
| IR3084UMPBF | 功能描述:IC XPHASE CONTROL 28-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。