2024年5月14日发(作者：图门蕴秀)
NCP1568DC48WGEVB
48 W Server AUX Power
Supply Solution Evaluation
Board User's Manual
Circuit Description
This design note describes a 48 W, wide range DC input, constant
voltage power supply, NCP1568DC48WGEVB, intended for Server
AUX power supply and others DC input applications requiring fixed
voltage output, low profile, high efficiency and high power density.
The NCP1568DC48WGEVB uses an Active Clamp Flyback (ACF)
topology utilizing ON Semiconductor NCP1568 ACF controller,
NCP51530A half−bridge driver, NCP4306 synchronous rectified
controller and secondary NTMFS6B03 synchronous MOSFET. This
Design Note provides the complete circuit schematic details, PCB and
BOM for the NCP1568 48W DC input Power adapter solution that
supports fixed 12V output voltage and 4A current.
This design uses an ACF topology to implement a Zero Voltage
Switching (ZVS) operation with high switching frequency and
secondary CLC circuitry to implement secondary Zero Current
Switching (ZCS). In order to keep cost low, (2) SJ MOSFETs are used
on the primary side for power switching.
Key Features
EVAL BOARD USER’S MANUAL
•
DC Input from 120 V to 400 V
•
ACF Topology with ZVS Operation
•
High Voltage Startup Current eliminates Startup
•
•
•
•
•
•
•
•
•
•
•
Output Specification
Output Voltage
Nominal Current
Max Current
Min Current
Avg. Efficiency
Ripple
Standby Power
Power Density
Protection
Size
12 V
4 A
4 A
Zero
>94% @ 12 V / 4 A at board end, 160 &
320 Vdc
<80 mV
<150 mW
48 W/in^3
Adaptive UVP, OVP, OVP, SCP, OTP
40 mm x 24 mm x 17 mm
Resistor
High Frequency Operation to allow Low Profile
Transformer: RM7 Transformer
ACF Operation Frequency Range from 110 kHz to
400kHz
Quite Skip and Flyback DCM Operation with
Frequency Foldback at No Load and Light Load
Rated Output Power: 12 V, 4 A
Ripple and Noise <80 mV
Efficiency: >94% at 156 Vdc and 320 Vdc @ Full Load
Output OVP
Output OCP, SCP
Open Loop Protection
Board Size: 40 mm x 24 mm x 17 mm
Power Density: 48 W/inch^3
DeviceApplication
Server AUX power
supply and other DC
input applications
Input Voltage
120 Vdc to
400 Vdc
Output Power
48 W
Topology
Flyback
I/O Isolation
Isolated
(3 kV)
NCP1568S02DBR2G
NCP51530AMNTWG
NCP4306AADZZZAMNTWG
NTMFS6B03NT1G
© Semiconductor Components Industries, LLC, 2019
1
May, 2020 − Rev. 1
Publication Order Number:
EVBUM2661/D
NCP1568DC48WGEVB
Top ViewBottom View
Figure 1. Evaluation Board Photos
CIRCUIT SCHEMATIC
Figure 2. Circuit Schematic
2
2024年5月14日发(作者：图门蕴秀)
NCP1568DC48WGEVB
48 W Server AUX Power
Supply Solution Evaluation
Board User's Manual
Circuit Description
This design note describes a 48 W, wide range DC input, constant
voltage power supply, NCP1568DC48WGEVB, intended for Server
AUX power supply and others DC input applications requiring fixed
voltage output, low profile, high efficiency and high power density.
The NCP1568DC48WGEVB uses an Active Clamp Flyback (ACF)
topology utilizing ON Semiconductor NCP1568 ACF controller,
NCP51530A half−bridge driver, NCP4306 synchronous rectified
controller and secondary NTMFS6B03 synchronous MOSFET. This
Design Note provides the complete circuit schematic details, PCB and
BOM for the NCP1568 48W DC input Power adapter solution that
supports fixed 12V output voltage and 4A current.
This design uses an ACF topology to implement a Zero Voltage
Switching (ZVS) operation with high switching frequency and
secondary CLC circuitry to implement secondary Zero Current
Switching (ZCS). In order to keep cost low, (2) SJ MOSFETs are used
on the primary side for power switching.
Key Features
EVAL BOARD USER’S MANUAL
•
DC Input from 120 V to 400 V
•
ACF Topology with ZVS Operation
•
High Voltage Startup Current eliminates Startup
•
•
•
•
•
•
•
•
•
•
•
Output Specification
Output Voltage
Nominal Current
Max Current
Min Current
Avg. Efficiency
Ripple
Standby Power
Power Density
Protection
Size
12 V
4 A
4 A
Zero
>94% @ 12 V / 4 A at board end, 160 &
320 Vdc
<80 mV
<150 mW
48 W/in^3
Adaptive UVP, OVP, OVP, SCP, OTP
40 mm x 24 mm x 17 mm
Resistor
High Frequency Operation to allow Low Profile
Transformer: RM7 Transformer
ACF Operation Frequency Range from 110 kHz to
400kHz
Quite Skip and Flyback DCM Operation with
Frequency Foldback at No Load and Light Load
Rated Output Power: 12 V, 4 A
Ripple and Noise <80 mV
Efficiency: >94% at 156 Vdc and 320 Vdc @ Full Load
Output OVP
Output OCP, SCP
Open Loop Protection
Board Size: 40 mm x 24 mm x 17 mm
Power Density: 48 W/inch^3
DeviceApplication
Server AUX power
supply and other DC
input applications
Input Voltage
120 Vdc to
400 Vdc
Output Power
48 W
Topology
Flyback
I/O Isolation
Isolated
(3 kV)
NCP1568S02DBR2G
NCP51530AMNTWG
NCP4306AADZZZAMNTWG
NTMFS6B03NT1G
© Semiconductor Components Industries, LLC, 2019
1
May, 2020 − Rev. 1
Publication Order Number:
EVBUM2661/D
NCP1568DC48WGEVB
Top ViewBottom View
Figure 1. Evaluation Board Photos
CIRCUIT SCHEMATIC
Figure 2. Circuit Schematic
2