NCP1601ADR2G ON Semiconductor, NCP1601ADR2G Datasheet - Page 17

• Manufacturer Part Number: NCP1601ADR2G
• Description: IC PFC CTRL CRM/TRANSITION 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1601ADR2G

• Mode: Critical Conduction (CRM), Discontinuous (Transition)
• Frequency - Switching: 58kHz
• Current - Startup: 17µA
• Voltage - Supply: 12.5 V ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Start-up Supply Current: 17uA
• Switching Freq: 405kHz
• Operating Supply Voltage (min): -3V
• Operating Supply Voltage (max): 18V
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Package Type: SOIC N
• Pin Count: 8
• Mounting: Surface Mount
• Switching Frequency: 405 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1601ADR2GOS; NCP1601ADR2GOS; NCP1601ADR2GOSTR

Appendix I – Summary of Equations in NCP1601 Boost PFC
Boost converter
Input current averaged by
filter capacitor
Voltage for on time V
MOSFET on- -time t
Switching period
Minimum Inductor for
CRM
Input impedance
Input power
Output power
Maximum input power
when V
Minimum ramp capacitor
when V
Control voltage V
Description
control
control
= 1 V
= 1 V
control
1
ton
→
→
C ramp >
→
P in_max =
V out
t 1 =
t 1 + t 2 =
t 1 + t 2 =
L > L (CRM) =
P in =
V ctrl =
V ton = V control
Z in =
P out = ηP in =
I in =
V in
t
V
1
V out − V in
=
control
LI pk
V in
is constant for unity PFC
I pk
C ramp V control
V ac 2 C ramp V control
2
C ramp V ac 2
t 1 + t 2
V out
2LI ch P in
V ac 2
, or
V out − V in
V out − V in
t 2
is constant for unity PFC
P in
2LI ch
Critical Mode (CRM)
V ac 2 C ramp
V out
V out
2LI ch
2LI ch
⋅ 2LI ch
t 1 =
V out − V in
η V ac 2 C ramp V control
=
V out
t 1 + t 2
C ramp V control
C ramp V control
LI pk
t 1
V in
2LI ch
http://onsemi.com
I ch
V in
I pk
I ch
1
f
17
, or
→
→
t 1 =
→
V ton =
t 1 + t 2 =
I in =
t 1 + t 2 =
Same as CRM
Same as CRM
Same as CRM
Same as CRM
Same as CRM
Same as CRM
Same as CRM
V out
V in
t
V
1
V out − V in
LI pk
control
V in
=
t 1 + t 2
(t
1
t 1 + t 2
V out
t 1 + t 2
T
+ t
, or

t 1
T
T
is constant for unity PFC
2
t 2
) is constant for unity PFC
C ramp V control
Discontinuous Mode (DCM)
V out − V in
I pk
2
t 1 =
V control
V out
=
I ch
t 1 + t 2

t 1
V out − V in
T
C ramp V control
V out
, or
I ch
T
C ramp V control
I ch