CPC1590 Datasheet, PDF (1/10 Pages) Clare, Inc. – Optically Isolated Gate Drive Circuit

CPC1590
Optically Isolated Gate Drive Circuit
Driver Characteristics
Parameter
Rating
Units
Input Current
2.5
mA
Switching Speed (I_F=5mA, MOS Input Capacitance=4nF)
t_ON
12
t_OFF1
125
μs
t_OFF2
210
Features
• Drives External Power MOSFET
• Low LED Current (2.5mA)
• Requires No External Power Supply
• Load Voltages up to 200V
• High Reliability
• Small 8-pin Surface Mount Flatpack Package
• Machine Insertable, Wave Solderable
• Tape and Reel Version Available
• 3750V_rms Input-to-Output Isolation
Applications
• Industrial Controls
• Instrumentation
• Medical Equipment Isolation
• Electronic Switching
• I/O Subsystems
• Appliances
Pb
RoHS
2002/95/EC
e3
Description
The CPC1590 is a MOSFET Gate Driver that requires
no external power supply: it regulates the MOSFET
voltage, up to 200V, down to 12.2V for internal use. It
is specifically designed for low duty cycle switching
frequencies that drive 4nF of gate capacitance.
The CPC1590 accomplishes very fast MOSFET
turn-on by supplying stored charge, from an external
capacitor, to the MOSFET gate when input control
current is applied to the device’s LED. After the
MOSFET is turned on, photocurrent from the input
optocoupler keeps it on for as long as sufficient input
control current flows, so there is no low-frequency
operating limit. When the MOSFET is turned off, the
storage capacitor charges from the device’s regulated
internal voltage in preparation for the next turn-on.
Because it is provided in a small, 8-pin, Flatpack
package and requires no separate power supply, the
CPC1590 provides a flexible design solution that
consumes the least amount of PCB land area.
Approvals
• UL Recognized Component File #: E76270
Ordering Information
Part
CPC1590P
CPC1590PTR
Description
8-Pin Flatpack (50/Tube)
8-Pin Flatpack (1000/Reel)
Figure 1. CPC1590 Block Diagram
1 _NC
4
NC
CPC1590
8
V
CAP
7
V_L1
2
LED +
5
V_G
LED - ³
6
V
L2
DS-CPC1590 - R00B
PRELIMINARY
1