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| 型号： | IR2085STRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER HALF BRIDGE OSC 8SOIC |
| 标准包装： | 1 |
| 配置： | 半桥 |
| 输入类型： | 自振荡 |
| 电流 - 峰： | 1A |
| 配置数： | 1 |
| 输出数： | 2 |
| 高端电压 - 最大（自引导启动）： | 100V |
| 电源电压： | 10 V ~ 15 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 标准包装 |
| 其它名称： | IR2085SPBFDKR |
IR2085S& (PbF)
Pin Descriptions
Cs: The input pin to the overcurrent comparator. Exceeding the overcurrent threshold value specified in
“Static Electrical Parameters” Section will terminate output pulses and start a new soft start cycle as soon
as the voltage on the pin reduce below the threshold value.
OSC: The oscillator-programming pin. Only two components are required to program the internal oscillator
frequency: a resistor connected between the V CC pin and the OSC pin, and a capacitor connected from
the OSC to COM. The approximate oscillator frequency is determined by the following simple formula:
f OSC = 1 / (2 · R T · C T )
Where frequency is in Hertz (Hz), RT resistance in Ohms ( ) and CT capacitance in Farads (F). The
recommended range of timing resistors is between 10k
and 100k
and range of time capacitances is
between 47pF and 470pF. The timing resistors less than 10k
should be avoided. The value of the timing
capacitor determines the amount of dead time between the two output drivers: lower the CT, shorter the
dead time and vice versa. It is not recommended to use a timing capacitor below 47pF, for best
performance keep the timing components physically as close as possible to the IR2085S. Separated
ground and V CC traces to the timing components are encouraged.
COM: Signal ground and power ground for all functions. Due to high current and high frequency operation,
a low impedance circuit board ground plane is highly recommended.
HO, LO: High side and low side gate drive pins. The high and low side drivers can directly drive the gate
of a power MOSFET. The drivers are capable of 1A peak source and sink currents. It is recommended
that the high and low drive pins be very close to the gates of the high side and low side MOSFETs to
prevent any delay and distortion of the drive signals.
V B : The high side power input connection. The high side supply is derived from a bootstrap circuit using a
low-leakage Schottky diode and a ceramic capacitor. To prevent noise, the Schottky diode and bypass
capacitor should be very close to the IR2085S.
V S : The high side power return connection. V S should be connected directly to the source terminal of high
side MOSFET with a trace as short as possible.
V CC : The IC bias input connection for the device. Although the quiescent V CC current is very low, total
supply current will be higher, depending on the gate charge of the MOSFETs connected to the HO and LO
pins, and the programmed oscillator frequency, total V CC current is the sum of quiescent V CC current and
the average current at HO and LO. Knowing the operating frequency and the MOSFET gate charge (Qg)
at selected V CC voltage, the average current can be calculated from:
Iave = 2 x Qg X f OSC
To prevent noise problem, a bypass ceramic capacitor connected to V CC and COM should be placed as
close as possible to the IR2085S.
IR2085S has an under voltage lookout feature for the IC bias supply, V CC . The minimum voltage required
on V CC to make sure that IC will work within specifications must be higher than 8.5V (9.5V minimum V CC is
recommended to prevent asymmetrical gates signal on HO and LO pins that are expected when V CC is
between 7.5V and 8.5V).
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR2086S | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH SPEED, 100V, SELF OSCILLATING 50% DUTY CYCLE, FULL-BRIDGE DRIVER |
| IR2086SPBF | 功能描述:IC DVR FULL BRIDGE HI/LOW 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127 |
| IR2086STRPBF | 功能描述:功率驱动器IC Hi Spd 100V 50% Duty Cycle Full Brdg Drvr 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 |
| IR-21 | 制造商:Inter-Market Inc (IMLEC) 功能描述:Unspecified |
| IR2100A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DC-to-DC Voltage Converter |
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