NCP1654_09 ONSEMI [ON Semiconductor], NCP1654_09 Datasheet - Page 5

• Manufacturer Part Number: NCP1654_09
• Description: Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters
• Manufacturer: ONSEMI [ON Semiconductor]

DETAILED PIN DESCRIPTIONS
Pin
1
2
3
4
5
6
7
8
Symbol
V
GND
DRV
V
control
V
V
V
CS
BO
FB
CC
in
Control Voltage /
Brown−Out / In
Supply Voltage
Current Sense
Feed−Back /
Drive Output
Soft−Start
Shutdown
Multiplier
Ground
Voltage
Name
Input
−
This pin provides a voltage V
PFC circuits is proportional to the resistor R
erates in average current mode if an external capacitor C
it operates in peak current mode.
This pin sources a current I
rent I
modulation. When I
Connect a resistor network among the rectified input voltage, BO pin, and ground. And connect
a capacitor between BO pin and ground. BO pin detects a voltage signal proportional to the
average input voltage.
When V
out), turns off the output driver and keeps it in low state until V
This signal which is proportional to the RMS input voltage V
(OPL) and PFC duty cycle modulation.
The voltage of this pin V
external type−2 compensation components to limit the V
to achieve near unity power factor.
The device provides no output when V
increases slowly (soft−start).
This pin receives a feedback signal V
This information is used for both the output regulation, the overvoltage protection (OVP), and
output undervoltage protection (UVP) to protect the system from damage at feedback abnor-
mal situation.
When V
When V
This pin is the positive supply of the IC. The circuit typically starts to operate when V
ceeds 10.5 V and turns off when V
up to 20 V.
The high current capability of the totem pole gate drive (±1.5 A) makes it suitable to effectively
drive high gate charge power MOSFET.
CS
BO
FB
FB
is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle
goes above 105% V
goes below 8% V
goes below V
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CS
goes above 200 mA, OCP is activated and the Drive Output is disabled.
control
BOL
5
CS
REF
, the circuit that detects too low input voltage conditions (brown−
M
which is proportional to the inductor current I
directly controls the input impedance. This pin is connected to
for the PFC duty cycle modulation. The input impedance of the
REF
, the device enters a low−consumption shutdown mode.
CC
, OVP is activated and the Drive Output is disabled.
FB
goes below 9 V. After start−up, the operating range is 9 V
control
that is proportional to the PFC circuits output voltage.
Function
M
< V
externally connected to this pin. The device op-
control(min)
control
M
. When it starts operation, the power
is connected to the pin. Otherwise,
ac
BO
is also for overpower limitation
bandwidth typically below 20 Hz
exceeds V
L
BOH
. The sense cur-
.
CC
ex-