ncp1560hdr2g ON Semiconductor, ncp1560hdr2g Datasheet - Page 13

• Manufacturer Part Number: ncp1560hdr2g
• Description: Full Featured Voltage Mode Pwm Controller
• Manufacturer: ON Semiconductor

Line Under/Overvoltage Shutdown
shutdown (UV/OV) circuit. The undervoltage (UV)
threshold is 1.52 V and the overvoltage threshold (OV) is
3.61 V, for a ratio of 1:2.4.
resistor divider from the input line. The resistor divider must
The NCP1560 incorporates a line under/overvoltage
The UV/OV circuit can be biased using an external
UV/OV Voltage
V
V
AUX(on)
AUX(off)
OUT2
OUT1
V
V
V
AUX
0 V
0 V
0 V
0 V
OV
UV
Figure 30. UV/OV Fault Timing Diagram
http://onsemi.com
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be sized to enable the controller once V
required operating range. If the UV or OV threshold is
reached, the soft−start capacitor is discharged, and the
outputs are immediately disabled with no overlap delay as
shown in Figure 30. Also, if an UV condition is detected, the
5.0 V Reference Supply is disabled.
UV or OV Fault
Propagation delay to
outputs (t
UV
or t
in
OV
is within the
)