ncl30051 ON Semiconductor, ncl30051 Datasheet - Page 2

• Manufacturer Part Number: ncl30051
• Description: Ncl30051 Product Preview Two Stage Pfc And Resonant Half Bridge Controller Combo For Led Lighting
• Manufacturer: ON Semiconductor

PControl
PDRV
PZCD
PCS
PCT
PFB
Comparator
V
+
ZCD
DD
I
+
−
PCT(C)
LEB
V
VCC
ZCD
PFC UVP
UVLO
+
−
V
I
PFB
PUVP
UVLO
Comparator
PFC UVP
V
−
+
Shifter
PCS(ILIM)
Level
< 2.25 V
> 5.65 V
Clamp
+
−
Clamp
V
+
−
Comparator
Comparator
DD
−
+
PDRV
Amplifier
−
+
V
On time
PCS
V
PREF
CC
Error
PFC
Good
Comparator
Detector
PFC OVP
Figure 2. Functional Block Diagram
+
−
Edge
PControl
t
PFC(off)
+
Disable
Reset
−
PZCD
VREF
+
−
V
Figure 1. Pin Connections
GND
OSC
PCS
PFB
POVP
HV
Timer
http://onsemi.com
SOIC−16
1
Dominant
Reset
Latch
S
R
2
PDRV
UVLO
Q
Q
Trigger
Shifter
UVLO
Delay
Pulse
Level
Good
HBoost
HDRVhi
HVS
HDRVlo
PDRV
PGND
VCC
PCT
CLK
V
S
R
Q
CC
Q
Q
Enable
Clock
Q
Disable
Q
Management
Delay
VCC
V
DD
V
CLK
HB(DIS)
Undervoltage
5 V /
3 V
Detector
S
Dominant
Reset
Latch
R
−
+
−
Reference
+
+
−
+
−
Voltage
I
start
+
−
+
−
Q
V
DD
4*I
V
V
UVLO
VCC
I
CC(on)
CC(off)
OSC(C)
OSC(C)
/
/
VCC
HBoost
HDRVhi
HVS
HDRVlo
GND
OSC
VREF
HV
D
C
C
boost
CC
boost