参数资料
| 型号： | IR3086MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/34页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER PHASE 20MLPQ |
| 标准包装： | 5 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 电流 - 电源： | 10mA |
| 电源电压： | 8.4 V ~ 14 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： | 剪切带 (CT) |
| 其它名称： | *IR3086MPBF |
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IR3086
IR3086 THEORY OF OPERATION
Block Diagram
The Block diagram of the IR3086 is shown in Figure 6, and specific features are discussed in the following sections.
RAMP
PWM
VCCH
REFERENCE
GATE
RMPIN+
RMPIN-
EAIN
BIASIN
COMPARATOR
SYSTEM
BIASIN
CLOCK
PULSE
GENERATOR
PWM
COMPARATOR
-
+
ENABLE
LATCH
S
RESET
DOMINANT
R
-
+
NON-OVERLAP
2V
GATEH
PWMRMP
VOLTAGE
RAMP
ENABLE
COMPARATORS
RAMP
SLOPE
ADJUST
VDAC
SHARE
DISCHARGE
CLAMP
0% DUTY
VCCL
GATEL
PGND
OVP
CIRCUIT
SCOMP
ISHARE
LGND
VRHOT
ADJUST
SCOMP ERROR
AMP
+
10K 20mV
-
VRHOT
COMPARATOR
X
0.91
+
VDAC +
VDAC
CYCLE
COMPARATOR
CURRENT
SENSE
AMP
X34
-
+
COMPARATOR
+
125mV
-
INTERNAL
VCC
BIAS
VCC
DACIN
CSIN+
CSIN-
PHSFLT
HOTSET
+
-
VOLTAGE
PROPORTIONAL
TO ABSOLUTE
TEMPERATURE
FAULT
COMPARATOR
Figure 6 – IR3086 Block Diagram
Tri-State Gate Drivers
The gate drivers can deliver up to 3A peak current. An adaptive non-overlap circuit monitors the voltage on the
GATEH and GATEL pins to prevent MOSFET shoot-through current while minimizing body diode conduction.
An Enable signal is provided by the Control IC to the Phase IC without the addition of a dedicated signal line. The
Error Amplifier output of the Control IC drives low in response to any fault condition such as input under voltage or
output overload. The IR3086 0% duty cycle comparator detects this and drives both gate outputs low. This tri-state
operation prevents negative inductor current and negative output voltage during power-down.
The Gate Drivers revert to a high impedance “off” state if VCCL and VCCH supply voltages are below the normal
operating range. An 80k ? resistor is connected across the GATEH/GATEL and PGND pins to prevent the
GATEH/GATEL voltage from rising due to leakage or other causes under these conditions.
Over Voltage Protection (OVP)
The IR3086 includes over-voltage protection that turns on the low side MOSFET to protect the load in the event of a
shorted high-side MOSFET or connection of the converter output to an excessive output voltage. A comparator
monitors the voltage at the CSIN- pin which is usually connected directly to the converter output. If the voltage
exceeds the DACIN voltage plus 125mV typical (100mV minimum and 160mV maximum) the GATEL pin drives
high. The OVP circuit overrides the normal PWM operation and will fully turn-on the low side MOSFET within
approximately 150ns. The low side MOSFET will remain ON until the over-voltage condition ceases.
Page 11 of 34
9/30 /04
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3086MTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT |
| IR3086MTRPBF | 功能描述:IC CTLR XPHASE 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 |
| IR3087 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE PHASE IC WITH OPTI-PHASE, OVP, AND OVERTEMP DETECT |
| IR3087M | 功能描述:IC XPHASE W/OVP/TM CTRL 20-MLPQ RoHS:否 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 |
| IR3087MPBF | 功能描述:IC XPHASE W/OVP/TM CTRL 20MLPQ 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 |
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