STEVAL-ISA021V1 STMicroelectronics, STEVAL-ISA021V1 Datasheet - Page 15

• Manufacturer Part Number: STEVAL-ISA021V1
• Description: BOARD REF VIPER22A SGL OUTPUT
• Manufacturer: STMicroelectronics
• Series: VIPER™r

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

AN2544
1.10
Figure 15. VIPer22-E, 12 V at 350 mA output
Figure 14. Efficiency
Efficiency is about 75% at 120 V
EMI conducted
EMI was checked for all four versions for maximum peak reading.
85%
80%
75%
70%
65%
60%
80
100
Efficiency VS Input Line for 12V output
ac
120
effic. @ 100ma
. Efficiency is better at higher output voltages.
140
Figure 16. VIPer12-E, 12 V at 200 mA output
160
Input Line
effic. @ 200ma
180
200
effic. @ 350ma
220
240
260
Circuit operation
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