NCP1207DR2 ON Semiconductor, NCP1207DR2 Datasheet
NCP1207DR2
Specifications of NCP1207DR2
Available stocks
Related parts for NCP1207DR2
NCP1207DR2 Summary of contents
Page 1
... CS 4 GND (Top View) ORDERING INFORMATION Device Package NCP1207DR2 SOIC−8 NCP1207DR2G SOIC−8 (Pb−Free) NCP1207P PDIP−8 NCP1207PG PDIP−8 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...
Page 2
Universal Network *Please refer to the application information section PIN FUNCTION DESCRIPTION Pin No. Pin Name Function 1 Demag Core reset detection and OVP 2 FB Sets the peak current setpoint 3 CS Current sense input and skip cycle ...
Page 3
HV 7.0 PON mA 5 − 5.3 V (fault) To Internal Fault Supply Mngt. GND *S and R are level triggered whereas S is edge triggered. R has priority over the ...
Page 4
ELECTRICAL CHARACTERISTICS unless otherwise noted) CC Rating DYNAMIC SELF−SUPPLY V Increasing Level at which the Current Source Turns−off CC V Decreasing Level at which the Current Source Turns− Decreasing Level at which the Latchoff ...
Page 5
TEMPERATURE ( C) Figure 3. V Increasing Level at which the CC Current Source Turns−off versus Temperature 1.60 1.40 1.20 1.00 0.80 0.60 0.40 −50 −25 ...
Page 6
TEMPERATURE ( C) Figure 9. Source Resistance versus Temperature 120 100 −50 − TEMPERATURE ( C) Figure 11. ...
Page 7
TEMPERATURE ( C) Figure 13. Minimum T versus Temperature off −50 Figure 15. DMG Pin Internal Resistance versus NCP1207 TYPICAL CHARACTERISTICS ...
Page 8
... Conduction Mode (BCM) also called Critical Conduction Mode. Dynamic Self−Supply (DSS): due to its Very High Voltage Integrated Circuit (VHVIC) technology, ON Semiconductor’s NCP1207 allows for a direct pin connection to the high−voltage DC rail. A dynamic current source charges up a capacitor and thus provides a fully independent V level to the NCP1207 ...
Page 9
The DSS behavior actually depends on the internal IC consumption and the MOSFET’s gate charge Qg select a MOSFET like the MTP2N60E, Qg equals 22 nC (max). With a maximum switching frequency selected at 75 kHz, the average ...
Page 10
DRIVER DRIVER = HIGH ? DRIVER = LOW ? I = 200 mA − 3 RESET + 2 + Figure 19. A patented method allows for skip level selection via a series resistor inserted in series with ...
Page 11
Demagnetization Detection The core reset detection is done by monitoring the voltage activity on the auxiliary winding. This voltage features a FLYBACK polarity. The typical detection level is fixed exemplified by Figure 21. 7.0 POSSIBLE 5.0 ...
Page 12
Latching Off the NCP1207 In certain cases, it can be very convenient to externally shut down permanently the NCP1207 via a dedicated signal, e.g. coming from a temperature sensor. The reset occurs when the user unplugs the power supply from ...
Page 13
If the power consumption budget is really too high for the DSS alone, connect a diode between the auxiliary winding and the V pin which will disable the DSS V). operation (V CC The SOIC package offers ...
Page 14
Calculating the V Capacitor CC As the above section describes, the fall down sequence depends upon the V level: how long does it take for the CC V line to go from The required time ...
Page 15
V (5 V/div) V GATE Rsense 200 SKIP Current Sense Pin (200 mV/div) Figure 31. This picture explains how the 200 mA internal offset current creates the skip cycle level. NCP1207 V (200 mV/div) CC The short−circuit ...
Page 16
... G C SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. NCP1207 PACKAGE DIMENSIONS SOIC−8 D1, D2 SUFFIX CASE 751−07 ISSUE 0.10 (0.004) ...
Page 17
F −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M NCP1207 PACKAGE DIMENSIONS PDIP−8 N SUFFIX CASE 626−05 ISSUE http://onsemi.com ...
Page 18
... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com NCP1207 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 18 ON Semiconductor Website: http://onsemi ...