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参数资料
| 型号： | IR3088M |
| 厂商： | International Rectifier |
| 文件页数： | 11/34页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE W/FAULT DET 20L-MLPQ |
| 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： | *IR3088M |
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IR3088
IR3088 THEORY OF OPERATION
Block Diagram
The Block diagram of the IR3088 is shown in Figure 6, and specific features are discussed in the following sections.
RAMP
COMPARATOR
PWM
LATCH
VCCH
RMPIN+
RMPIN-
EAIN
CLOCK
PULSE
GENERATOR
PWM
COMPARATOR
-
S
RESET
DOMINANT
R
-
GATEH
GATE
BIASIN
SYSTEM
REFERENCE
VOLTAGE
ENABLE
+
+
NON-OVERLAP
COMPARATORS
2V
PWMRMP
RAMP
SLOPE
ADJUST
RAMP
DISCHARGE
CLAMP
VCCL
GATEL
SCOMP
ISHARE
LGND
SHARE
ADJUST
ERROR
AMP
10K
+
-
20mV
+
X
0.91
+
0% DUTY
CYCLE
COMPARATOR
INTERNAL
CIRCUIT
BIAS
CURRENT
SENSE
AMP
PGND
VCC
DACIN
CSIN+
VRHOT
VRHOT
COMPARATOR
X34
CSIN-
PHSFLT
HOTSET
+
-
VOLTAGE
PROPORTIONAL
TO ABSOLUTE
TEMPERATURE
FAULT
COMPARATOR
Figure 6. IR3088 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 IR3088 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.
Thermal Monitoring (VRHOT)
The IR3088 senses its own die temperature and produces a voltage at the input of the VRHOT comparator that is
proportional to temperature. An external resistor divider connected from VBIAS to the HOTSET pin and ground can
be used to program the thermal trip point of the VRHOT comparator. The VRHOT pin is an open-collector output
and should be pulled up to a voltage source through a resistor. If the thermal trip point is reached the VRHOT output
drives low.
Page 11 of 34
9/30 /04
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| IR3088MPBF | 功能描述:IC CONTROLLER PHASE 20L-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 |
| IR3088MTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT |
| IR3088MTRPBF | 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 |
| IR3092 | 制造商:IRF 制造商全称:International Rectifier 功能描述:2 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC |
| IR3092M | 功能描述:IC CONTROLLER 2PHASE 48-MLPQ RoHS:否 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
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