NCP1606BOOSTGEVB ON Semiconductor, NCP1606BOOSTGEVB Datasheet - Page 18

• Manufacturer Part Number: NCP1606BOOSTGEVB
• Description: EVAL BOARD FOR NCP1606BOOSTG
• Manufacturer: ON Semiconductor

Specifications of NCP1606BOOSTGEVB

• Design Resources: NCP1606BOOST EVB BOM NCP1606BOOSTGEVB Gerber Files NCP1606BOOST EVB Schematic
• Main Purpose: AC/DC, Primary and Secondary Side with PFC
• Outputs And Type: 1, Isolated
• Power - Output: 100W
• Voltage - Output: 400V
• Current - Output: 250mA
• Voltage - Input: 88 ~ 264VAC
• Regulator Topology: Boost
• Frequency - Switching: 250kHz
• Board Type: Fully Populated
• Utilized Ic / Part: NCP1606
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP1606BOOSTG
• Other names: NCP1606BOOSTGEVBOS

clamp must first be overcome. This clamp will draw a
maximum of I
and allowing the ZCD pin voltage to drop low enough to
shutdown the part (Figure 39). After shutdown, the
DRIVE
To activate the shutdown feature on ZCD, the internal
Figure 37. OCP Circuitry with Optional External RC
R
Shutdown
SENSE
Figure 38. Shutting Down the PFC Stage by Pulling FB to GND (A) or Pulling ZCD to GND (B)
Shutdown
CL(NEG)
Figure 39. Shutdown Comparator and Current Draw to Overcome Negative Clamp
I
ZCD
~70 mA
R
optional
5 mA
OUT1
(5.0 mA maximum) before releasing
CS
V
OUT
Filter
R
C
OUT2
comp
LEB
+
1
2
3
4
Figure 38(a)
V
V
SDL
FB
Ctrl
Ct
Cs
CS(limit)
NCP1606
+
−
V
GND
DRV
ZCD
V
SDH
CC
OCP
http://onsemi.com
8
7
6
5
18
V
SHUTDOWN MODE
controller into a standby mode of operation. The FB pin can
be pulled below the UVP level (0.3 V typical) or the ZCD
pin can be pulled below the V
If the FB pin is used for shutdown (Figure 38(a)), care must
be taken to ensure that no significant leakage current exists
on the shutdown circuitry. This could impact the output
voltage regulation. If the ZCD pin is used for shutdown
(Figure 38(b)), then any parasitic capacitance created by
the shutdown circuitry will add to the delay in detecting the
zero inductor current event.
comparator includes approximately 90 mV of hysteresis to
ensure noise free operation. A small current source (70 mA
typ) is also activated to pull the unit out of the shutdown
condition when the external pull down is released.
CL(NEG)
The NCP1606 allows for two methods to place the
Figure 38(b)
1
2
3
4
L
BOOST
FB
Ctrl
Ct
Cs
NCP1606
GND
DRV
ZCD
V
CC
8
7
6
5
~1 V
SDL
R
level (typically 200 mV).
ZCD
Shutdown