NCP1631DR2G ON Semiconductor, NCP1631DR2G Datasheet - Page 21

• Manufacturer Part Number: NCP1631DR2G
• Description: IC CTLR PFC INTERLEAVED 16SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1631DR2G

• Mode: Critical Conduction (CRM), Discontinuous Conduction (DCM)
• Frequency - Switching: 130kHz
• Current - Startup: 100µA
• Voltage - Supply: 10 V ~ 15 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

When any of the following faults is detected:
− brown−out (“BO_NOK”)
− Under−Voltage Protection (“UVP”)
− Latch−off condition (“Stdwn”)
− Die over−temperature (“TSD”)
− Too low current sourced by the R
− “UVLO” (improper Vcc level for operation)
operating. The major part of the circuit sleeps and its
consumption is minimized (< 500 mA). More specifically,
when the circuit is in OFF state:
− The two drive outputs are kept low
− The 7−mA current source of the brown−out block is
The circuit turns off. In this mode, the controller stops
enabled to set the proper start−up BO threshold if Vcc
is high enough for proper operation. If not, the
brown-out pin is pulled down by a pnp transistor for a
proper input voltage sensing when the circuit recovers
operation (see brown-out section).
TSD
Fault
management
Shutdown
Thermal
Internal
t
pin (“R
Figure 20. Fault Management Block
t(open)
Rt(open)
OF F
Stdwn
UVP
BO_NOK
”)
http://onsemi.com
Q
UVLO
R
S
21
VDD
Vref
Iref
− The pin5 capacitor (V
− The “pfcOK” pin is grounded.
− The output of the “V
time is around 20 ms instead of 200 ms to allow a faster
re−start.
50 mA). The brown−out block is initialized not to allow
operation (“BO_NOK” high) by default. The PNP clamp is
active and maintains the BO pin level below 1 V. The 7−mA
current source is enabled only when V
threshold.
When the circuit recovers after a fault, the first watchdog
In OFF mode at startup, the consumption is very low (<
grounded along the OFF time, to initialize it for the
next operating sequence, where it must be slowly and
gradually charged to offer some soft−start.
grounded
blanking
30−ms
time
Vcc_OK
Regul
IRt_Low
(Ipin3 < 7 mA)
TON
12 V / 10 V
control
processing block” is
) is discharged and kept
Vcc
CC
reaches V
CC(on)