CPC1596
570V, Optically Isolated
Load-Biased Gate Driver
INTEGRATED
C
IRCUITS
D
IVISION
Driver Characteristics
Description
The CPC1596 is an optically isolated, load-biased
Gate Driver that requires no additional power supply to
bias the external MOSFET gates; in the off-state it
regulates the voltage drawn from the load (up to 570V)
down to 12.2V for internal use. It is specifically
designed for low duty cycle switching applications
such as an optically isolated DC relay using a single
MOSFET or an AC relay with two MOSFETs.
Parameter
Rating
Units
Input Current
2.5
mA
Switching Speed (I =5mA, MOSFET Input Capacitance=4nF)
F
t
t
t
3
d(on)
(V =2V)
365
435
s
d(off1)
d(off2)
GB
(V =1V)
GB
The CPC1596 accomplishes very fast MOSFET
turn-on by supplying charge stored in 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 internal
optocoupler keeps the MOSFET active for as long as
sufficient input control current is applied assuring very
low-frequency operation. When the MOSFET is turned
off, the storage capacitor charges from the load
voltage via the regulated internal voltage in
Features
• Integrated 570V to 12.2V regulator circuit for driving
high-power, high-voltage MOSFETs eliminates the
need for auxiliary power supply
• Capable to source 9.9mA and sink 6mA gate-current
to boost external MOSFET turn-on speed
• Enables using higher power MOSFETs
• Only 2.5mA input LED current required
• 3750VRMS Input-to-Output galvanic isolation
• Small 8-pin DIP and Surface Mount Packages
preparation for the next turn-on.
Provided in a small, 8-pin package and requiring no
separate power supply, the CPC1596 provides a
flexible design solution that minimizes PCB real
estate.
Applications
Approvals
• UL Recognized Component: File E76270
• Universal 110VRMS - 230VRMS Equipment
• Industrial controls
• CSA Certified Component: Certificate 70196286
• Instrumentation
• Automatic Test Equipment (ATE)
• Home & building automation
• HVAC controls
Ordering Information
Part
Description
• Medical equipment
CPC1596G
8-Pin DIP (50/Tube)
• Internet of Things (IoT)
CPC1596GS
8-Pin Surface Mount (50/Tube)
CPC1596GSTR 8-Pin Surface Mount Tape & Reel (1000/Reel)
Figure 1. CPC1596 Load Biased Opto-Gate Driver Application Diagram
CPC1596
7
C
1
NC
NC
8
A
4
+ VLOAD
LOAD
CST
Q1
G
5
LED+
2
3
LED-
6
B
- VLOAD
DS-CPC1596-R03
www.ixysic.com
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