Document
NCV1072, NCV1075, NCV1076, NCV1077
Automotive High-Voltage
Switcher for Low Power
SMPS
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
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MARKING DIAGRAM
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.
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.
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.
Features
• Built−in 670 V MOSFET with RDS(on) of 4.7 W (NCV1076/77) /
11 W (NCV1072/75)
• Large Creepage Distance Between High−voltage Pins
• Current−Mode Fixed Frequency Operation – 65 / 100 / 130 kHz
PDIP−7 P SUFFIX CASE 626A
V107xyyy AWL
YYWWG
SOT−223 ST SUFFIX CASE 318E
AYW Vz7xyG
G
1
x = Current Limit (2, 5, 6 or 7) y = Oscillator Frequency
= A(65 kHz), B(100 kHz), 130(130 kHz) z = 0 (with brown−in), C (without brown−in) yyy = 065, 100, 130 A = Assembly Location WL = Wafer Lot Y, YY = Year W, WW = Work Week
G or G = Pb−Free Package
• Peak Current: NCV1072 with 250 mA, NCV1075 with 450 mA,
NCV1076 with 650 mA and NCV1077 with 800 mA
ORDERING INFORMATION
• Fixed Ramp Compensation
• Skip−Cycle Operation at Low Peak Currents Only: No Acoustic
Noise!
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.
• 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
Timer−Based Detection
Requiring Unique Site and Control Change
• Auto−Recovery Overvoltage Protection with Auxiliary
Winding Operation
• Frequency Jittering for Better EMI Signature, Including
Frequency Foldback Mode
Requirements; AEC−Q100 Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
• No Load Input Consumption < 50 mW
• Options With or Without Brown−in Function Available
• Frequency Foldback to Improve Efficiency at Light
Load
Typical Applications
• Auxiliary & Standby Isolated Power Supplies for
HEV/EV
© Semiconductor Components Industries, LLC, 2018
July, 2019 − Rev. 6
1
Publication Order Number: NCV1070/D
NCV1072, NCV1075, NCV1076, NCV1077
PIN CONNECTIONS
VCC 1 2
GND 3 FB 4
(Top View) PDIP−7
8 GND 7 GND
5 DRAIN
VCC
1
FB 2
DRAIN 3
Figure 1. Pin Connections
4 GND
(Top View) SOT−223
INDICATIVE MAXIMUM OUTPUT POWER
RDS(on) − IIPK
NCV1072 / 1075
11 W − 450 mA
NCV1076 / 1077
4.7 W − 800 mA
230 Vac 19 W 25 W
85−265 Vac 10 W 15 W
NOTE: Informative values only, with Tamb = 50°C, FSW = 65 kHz, Self supply via Auxiliary winding and circuit mounted on minimum copper area as recommended.
QUICK SELECTION TABLE
NCV1072
NCV1075
RDS(on) (W) Ipeak (mA)
11 250 450
Freq (kHz)
65 100 130* 65 100 130
Release to Market Status
No No No P
P No
NOTE: PDIP−7 Release (P)/SOT−223 released (S) *130 kHz on demand only
NCV1076
NCV1077
4.7
650 800
65 100 130 65 100 130
P P No P S No
Figure 2. Typical Application Example
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NCV1072, NCV1075, NCV1076, NCV1077
PIN FUNCTION DESCRIPTION
Pin N5
Pin Name
Function
1 VCC Powers the internal circuitry
2 NC
3 GND
The IC Ground
4 FB Feedback signal input
5 Drain 6 7 GND 8 GND
Drain connection
The IC Ground The IC Ground
Pin Description This pin is connected to an external capacitor. The VCC includes an active shunt which serves as an auto−recovery over voltage protection.
By connecting an opto−coupler to this pin, the peak current set point is adjusted accordingly to the output power demand. The internal drain MOSFET connection This un−connected pin ensures adequate creepage distance
+ −
+ −
+ −
Vcc Vclamp
I OVP
Vcc OVP
80−us filter
Ipflag
SCP
tSCP
Jittering
OSC
LineOK Sawtooth
Foldback
I FBskip
SKIP
S Q
Q R
Vcc Management
t recovery
LineOK
TSD UVLO
OFF
UVLO Reset Vdd
OFF UVLO
line detection
Vcc
DRV
S Q
Q R
Sawtooth
Ra.