NCV1072, NCV1075,
NCV1076, NCV1077
Automotive High-Voltage
Switcher for Low Power
SMPS
www.onsemi.com
The NCV107x products integrate a fixed frequency current mode
controller with a 670 V MOSFET. Available in a PDIP−7 package, the
NCV107x offer a high level of integration, including soft−start,
frequency−jittering, short−circuit protection, skip−cycle, a maximum
peak current set point, ramp compensation, and a Dynamic
Self−Supply (eliminating the need for an auxiliary winding).
Unlike other monolithic solutions, the NCV107x is quiet by nature:
during nominal load operation, the part switches at one of the available
frequencies (65, 100 or 130 kHz). When the output power demand
diminishes, the IC automatically enters frequency foldback mode and
provides excellent efficiency at light loads. When the power demand
reduces further, it enters into a skip mode to reduce the standby
consumption down to a no load condition.
MARKING
DIAGRAM
PDIP−7
P SUFFIX
CASE 626A
V107xyyy
AWL
YYWWG
AYW
Vz7xyG
G
SOT−223
ST SUFFIX
CASE 318E
Protection features include: a timer to detect an overload or a
short−circuit event, Overvoltage Protection with auto−recovery and
AC input line voltage detection.
1
For improved standby performance, the connection of an auxiliary
winding stops the DSS operation and helps to reduce input power
consumption below 50 mW at high line.
x
y
= Current Limit (2, 5, 6 or 7)
= Oscillator Frequency
= A(65 kHz), B(100 kHz), 130(130 kHz)
= 0 (with brown−in), C (without brown−in)
= 065, 100, 130
= Assembly Location
= Wafer Lot
= Year
z
yyy
A
WL
Y, YY
Features
• Built−in 670 V MOSFET with R
11 W (NCV1072/75)
of 4.7 W (NCV1076/77) /
DS(on)
W, WW = Work Week
G or G = Pb−Free Package
• Large Creepage Distance Between High−voltage Pins
• Current−Mode Fixed Frequency Operation – 65 / 100 / 130 kHz
• Peak Current: NCV1072 with 250 mA, NCV1075 with 450 mA,
NCV1076 with 650 mA and NCV1077 with 800 mA
• Fixed Ramp Compensation
ORDERING INFORMATION
Only limited options are released to market. Other
options available upon customer request. See status and
detailed ordering and shipping information on pages 2 &
27 of the document.
• Skip−Cycle Operation at Low Peak Currents Only: No Acoustic
Noise!
• Dynamic Self−Supply: No Need for an Auxiliary Winding
• Internal 1 ms Soft−Start
• Internal Temperature Shutdown
• Auto−Recovery Output Short Circuit Protection with
• NCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Qualified and PPAP
Capable
Timer−Based Detection
• Auto−Recovery Overvoltage Protection with Auxiliary
Winding Operation
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
• Frequency Jittering for Better EMI Signature, Including
Frequency Foldback Mode
• No Load Input Consumption < 50 mW
Typical Applications
• Options With or Without Brown−in Function Available
• Frequency Foldback to Improve Efficiency at Light
Load
• Auxiliary & Standby Isolated Power Supplies for
HEV/EV
© Semiconductor Components Industries, LLC, 2018
1
Publication Order Number:
July, 2019 − Rev. 6
NCV1070/D
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