NCP1631DR2G ON Semiconductor, NCP1631DR2G Datasheet - Page 21
NCP1631DR2G
Manufacturer Part Number
NCP1631DR2G
Description
IC CTLR PFC INTERLEAVED 16SOIC
Manufacturer
ON Semiconductor
Datasheet
1.NCP1631DR2G.pdf
(23 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
NCP1631DR2G
Manufacturer:
ON/安森美
Quantity:
20 000
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)