ON Semiconductor NCP4305 User Manual
NCP4305DGEVB
NCP4305 Synchronous
Rectification Evaluation
Board User's Manual
Table 1. GENERAL PARAMETERS
Supply
SMPS Type
LLC 5−35 V 40 V
Description
This evaluation board user’s manual describes a high efficiency
synchronous rectification evaluation board that can easily replace
a secondary side rectification diode in an SMPS.
The NCP4305 is used as synchronous rectification controller.
The evaluation board has very few external components and illustrates
how small and effective such a design can be.
The NCP4305 features a very precise 0 mV turn-off comparator that
supports even very low current flowing through the MOSFET even
when very low R
Key Features
Voltage
synchronous MOSFET s is used.
DSON
Reverse
Voltage
Effective
Resistance
0.9 mW
• Precise Turn-off Comparator
• Wide Input Voltage Range
• High Operation Frequency
• Strong MOSFET Driver
• High Efficiency
• Adjustable Minimum On and Off Times
• Light Load Detection Feature
• Capable to Operate in Positive and Negative Branch
• Small size
www.onsemi.com
EVAL BOARD USER’S MANUAL
© Semiconductor Components Industries, LLC, 2016
January , 2016 − Rev. 1
Figure 1. NCP4305 Evaluation Board
1 Publication Order Number:
EVBUM2350/D
Connection Diagram
NCP4305DGEVB
VCC
+
+
VCC
A) B)
Figure 2. Possible Connections in to Circuit
The evaluation board can be connected in circuit where
the rectification diode is in the positive or negative branch.
When connection to a positive branch is used, it is necessary
to use an external power supply (or auxiliary winding with
rectification) to provide power to the evaluation board. VCC
should be referenced to A1 or A2 points. When LLD
function is used it is needed to connect LLD1 pin with
opposite side rectifier cathode.
www.onsemi.com
2
Loading...