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参数资料
| 型号： | IRS27952SPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/28页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER HALF-BRIDGE 8SOIC |
| 标准包装： | 95 |
| 输出隔离： | 隔离 |
| 频率范围： | 46.6kHz ~ 285kHz |
| 输入电压： | 12 V ~ 18 V |
| 输出电压： | 12 V ~ 18 V |
| 功率（瓦特）： | 833mW |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
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IRS27951S
IRS27952(4)S
VCC: Power Supply Voltage
This is the supply voltage pin of the IC and sense node for the under-voltage lock out circuit. It is possible to turn off
the IC by pulling this pin below the minimum turn off threshold voltage, V CCUV- without damage to the IC. This pin is
not internally clamped.
RT: Oscillator timing resistor
This pin provides a precise 2V reference and a resistor connected from this pin to COM defines a current that is
used to set the minimum oscillator frequency. To close the feedback loop that regulates the converter output
voltage by modulating the oscillator frequency, the phototransistor of an optocoupler will be connected to this pin
through a resistor. The value of this resistor will set the maximum operating frequency. An R-C series connected
from this pin to COM sets frequency shift at start-up to prevent excessive energy inrush (soft-start).
CT/SD: Oscillator timing capacitor /Shutdown
An external capacitor CT from this pin to COM sets the dead time and frequency of the oscillator. The CT pin has
sawtooth waveform, which is charged up by the current reference programmed at RT pin during rising slope and is
discharged by an internal fixed 2mA current source during the falling slope. The falling time of the sawtooth defines
the dead-time.
At start-up, a 10uA current source charges this capacitor and the oscillator is enabled only when the voltage at this
pin exceeds VEN1. The IC can also be used to enter sleep mode by externally pulling this pin below VEN2.
COM: Logic and Gate drive Ground
This is ground potential pin of the integrated control circuit. All internal circuits are referenced to this point.
LO: Low-side Gate Drive Output
The driver is capable of 0.3A source and 0.9A sink peak current to drive the lower MOSFET of the half-bridge leg.
The pin is actively pulled to GND during UVLO.
VS: High Side Gate Return/Current Sense
This is the floating supply return. This pin also acts as a high voltage current sense pin and uses the low-side
MOSFET R DSON to detect an over current fault condition.
HO: High-side Gate Drive
The driver is capable of 0.3A source and 0.9A sink peak current to drive the high-side MOSFET in the half-bridge. A
resistor internally connected to pin VS ensures that the pin is not floating during UVLO.
VB: High Side floating supply voltage
The bootstrap capacitor connected between this pin and VS is charged by the bootstrap diode when the low-side
gate-drive is high.
November 8 , 2012
11
? 2012 International Rectifier
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| IRS27952STRPBF | 功能描述:功率驱动器IC Resonant 1/2 Brdg Cntrl IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IRS2980 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:功率半导体 |
| IRS2980S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LED DRIVER CONTROL IC |
| IRS2980SPBF | 功能描述:功率因数校正 IC Fluorescent PFC + Ballast Combo IC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| IRS2980STRPBF | 功能描述:功率因数校正 IC Fluorescent PFC + Ballast Combo IC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
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