STEVAL-ISA021V1 STMicroelectronics, STEVAL-ISA021V1 Datasheet - Page 2
![BOARD REF VIPER22A SGL OUTPUT](/photos/9/30/93055/steval-isa021v1_sml.jpg)
STEVAL-ISA021V1
Manufacturer Part Number
STEVAL-ISA021V1
Description
BOARD REF VIPER22A SGL OUTPUT
Manufacturer
STMicroelectronics
Series
VIPER™r
Datasheet
1.STEVAL-ISA035V1.pdf
(17 pages)
Specifications of STEVAL-ISA021V1
Design Resources
STEVAL-ISA021V1 Gerber Files STEVAL-ISA021V1 Schematic STEVAL-ISA021V1 Bill of Material
Main Purpose
AC/DC, Primary Side
Outputs And Type
1, Isolated
Power - Output
10W
Voltage - Output
12V
Current - Output
840mA
Voltage - Input
90 ~ 264VAC
Regulator Topology
Flyback
Frequency - Switching
60kHz
Board Type
Fully Populated
Utilized Ic / Part
VIPer22A
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free by exemption / RoHS compliant by exemption
Other names
497-5219
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Contents
Contents
1
2
3
2/17
Circuit operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Input line rectification and line conducted filter . . . . . . . . . . . . . . . . . . . . . . 4
Start circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Design example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Design hints and trade-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Burst mode in no-load or very light load . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
EMI conducted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
AN2544