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| 型号： | CPC1580PTR |
| 厂商： | IXYS Integrated Circuits Division |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | OPTOCOUPLER 2.5MA 8-PIN FLTPCK |
| 产品目录绘图： | CPC1580 Series Circuit |
| 标准包装： | 1 |
| 电压 - 隔离： | 3750Vrms |
| 通道数： | 1，单向 |
| 电流 - DC 正向(If)： | 1mA |
| 输入类型： | DC |
| 输出类型： | 栅极驱动器 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SMD，鸥翼型 |
| 供应商设备封装： | 8-扁平封装 |
| 包装： | 标准包装 |
| 产品目录页面： | 2628 (CN2011-ZH PDF) |
| 其它名称： | CLA297DKR |
I NTEGRATED C IRCUITS D IVISION
2. Introduction
The CPC1580 Isolated Gate Driver uses an efficient
optocoupler design to provide remote gate drive
current to a MOSFET, while providing 3750V rms of
isolation between the LED control current input and
the MOSFET gate drive output. The CPC1580 is used
in conjunction with a MOSFET transistor for remote
switching of DC loads ( Figure 1 ) and two MOSFETS
where isolated power is unavailable.
By selecting a few external components, the charge
capacitor and resistors, the designer has control over
the operating parameters of the CPC1580 circuit, and
can customize the circuit to accommodate the
requirements of a wide selection of MOSFETs.
The designer just needs to know the MOSFET total
gate charge (Q G ), and with this information a capacitor
can be chosen. The capacitance of the storage
capacitor, C ST , should be greater than or equal to Q G .
3. Functional Description
The CPC1580 is operational when sufficient input
control current is flowing, the LED is turned on, and
the gate current is flowing. The LED illuminates the
photovoltaics (converts light into electrical power, or
photocurrent), which provides current to turn on the
NPN bipolar transistor. The NPN transistor then allows
CPC1580
along with the charge from the photovoltaics, to the
MOSFET gate to accomplish a rapid turn-on. After the
capacitor has discharged and the MOSFET has
turned on, the photocurrent from the input optocoupler
continues to flow into the gate to keep the MOSFET
turned on.
When the input control current is removed, the gate
current stops flowing and the PNP bipolar transistor is
on and is discharging the MOSFET gate. The
MOSFET is now off. At this point, the capacitor begins
to recharge for the next turn-on cycle.
4. Device Configuration
4.1 LED Resistor
LED resistor selection should comply with the
recommended operating conditions. This will provide
reliability to the design, and should help with
temperature. The CPC1580 is capable of being
operated at up to the maximum ratings, but this is not
recommended. It will shorten the life-span of the
device and could cause temperature problems that will
produce inaccuracies. The reason for using a higher I F
current is to provide for faster turn-on. Proper design
will have to be used to decide on the needs of the
application. The equation used to calculate the
resistor value:
for charge to go to the gate of the MOSFET. When an
external storage capacitor is added to the CPC1580,
the photocurrent that is produced turns on the NPN
R LED =
V IN - V F
I F
bipolar transistor and provides the charge (I x t = Q)
plus the charge of the capacitor to turn on the
MOSFET rapidly. If sufficient input control current is
not flowing, the LED is turned off, and gate current is
not flowing. The LED is off due to the V F << the
minimum forward voltage required and not enough
?
?
?
?
I F = Input Control Current
V IN = Input Power Source
V F = Forward Voltage Drop of LED
R LED = Input Resistor connected to LED
current being applied. This turns on the PNP bipolar
transistor, which provides a path for Q G to discharge to
V S .
When V L is first applied, the external storage capacitor
begins to charge. The value of the storage capacitor
should be equal to or greater than the MOSFET gate
capacitance: this will ensure proper operation. The
charge is sent through a bootstrap diode to prevent
the charge from escaping and discharging through a
4.2 Storage Capacitor Selection
The storage capacitor (C ST ) enables the part to turn
on quickly by holding a reservoir of charge to be
transferred to the gate of the MOSFET. The turn-off
cycle does not depend on the storage capacitor.
The equation used to calculate the value of the charge
storage capacitor is:
turned-on MOSFET. The input control current is
applied, then the charge is transferred from the
storage capacitor through the NPN bipolar transistor,
www.ixysic.com
6
C ST >
Q G
V LOAD - V CAP
(FARADS)
R01
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相关代理商/技术参数 |
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| CPC1590 | 制造商:CLARE 制造商全称:Clare, Inc. 功能描述:Optically Isolated Gate Drive Circuit |
| CPC1590P | 功能描述:逻辑输出光电耦合器 Optically Isolated Gate Driver RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| CPC1590PTR | 功能描述:逻辑输出光电耦合器 Optically Isolated Gate Driver, Tape/Reel RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| CPC1593 | 制造商:IXYS 制造商全称:IXYS Corporation 功能描述:Single-Pole, Normally Open OptoMOS?? Relay Integrated Current Limit with Voltage and Thermal Protection |
| CPC1593G | 功能描述:固态继电器-PCB安装 1-Form-A 600V 6-Pin DIP RoHS:否 制造商:Omron Electronics 控制电压范围: 负载电压额定值:40 V 负载电流额定值:120 mA 触点形式:1 Form A (SPST-NO) 输出设备:MOSFET 封装 / 箱体:USOP-4 安装风格:SMD/SMT |
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