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| 型号： | CPC1580P |
| 厂商： | IXYS Integrated Circuits Division |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | OPTOCOUPLER 2.5MA 8-PIN FLTPCK |
| 标准包装： | 50 |
| 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： | 管件 |
I NTEGRATED C IRCUITS D IVISION
Where C RSS is the MOSFET gate-drain capacitance
(averaged over the switching voltage range) found in
the MOSFET data sheet, I G_SINK is the gate sinking
current of the CPC1580, and I G_SOURCE is the gate
driving ability. The maximum value of t RISE is limited
by the CPC1580 unloaded discharge characteristic
and should be reviewed in light of the final application
component selections if critical.
The value for the charge time, t CHG , is due to external
component selection. The storage capacitor charge
recovery time (seconds) is computed as:
CPC1580
R OVP and C OVP are optional over-voltage protection
elements that are present in the application circuit
diagram (see Figure 3 ).
The term inside the logarithm reflects the discharge
and recharge voltage on C ST . For practical circuit
component selection, this can be simplified as
described above.
Use this information to calculate the maximum
switching frequency in Section 7 below.
Note: The CPC1580 is ideal to use where
remote power is otherwise unavailable. If the
t CHG
~ - (400 + R OVP ) ? (C ST + C OVP ) ? ln
(
(V LOAD - V FINAL ) ? C ST
Q G
)
LED is also powered remotely, care must be
taken to ensure that parasitic transient signals
are reliably filtered from the input control signal.
Large transient currents will mutually couple
Which reduces to:
energy between cables and a simple R-C
filtering of the CPC1580 input may be sufficient
t CHG
~ - (400 + R OVP ) ? (C ST + C OVP ) ? 3
to suppress false turn-on.
Figure 2. CPC1580 AC Application Circuit
CPC15 8 0
8 V CAP
C ST
*
1
4
NC
NC
7
V D
LOAD
+/- V LOAD
5
Q1
LED +
2
V G
LED -
3
6
V S
Q2
+/- V LOAD
* Minimum Blocking Voltage = 100V
5. CPC1580 Over-Voltage Protection
Over-voltage protection is generally required for the
CPC1580 because of parasitic inductance in the load,
wires, board traces, and axial leads of protectors.
Purely resistive loads or loads with low voltage
switching may be able to rely on the transistor to
handle any parasitic energy and thereby not require
protection for the CPC1580. For very low inductance
loads and traces, over-voltage suppression may be
handled with a simple R-C filter consisting of R OVP
and C OVP , or by use of a free-wheeling diode (see
remote switching of a load (i.e. through a long cable) a
voltage suppressor can be used. For heavily inductive
loads only a free-wheeling diode, D OVP , connected
8
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