STEVAL-ISA023V1 STMicroelectronics, STEVAL-ISA023V1 Datasheet - Page 12

• Manufacturer Part Number: STEVAL-ISA023V1
• Description: EVAL BOARD 24W POS OUT VIPER53E
• Manufacturer: STMicroelectronics
• Series: VIPER™r
• Type: AC/DC Switching Convertersr

Specifications of STEVAL-ISA023V1

• Mfg Application Notes: VIPer53EDIP - AppNote
• Design Resources: STEVAL-ISA023V1 Gerber Files STEVAL-ISA023V1 Schematic STEVAL-ISA023V1 Bill of Materials
• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 3, Isolated
• Power - Output: 25W
• Voltage - Output: 5V, 12V, 3.3V
• Current - Output: 3A, 800mA, 100mA
• Voltage - Input: 90 ~ 265VAC
• Regulator Topology: Flyback
• Frequency - Switching: 60kHz
• Board Type: Fully Populated
• Utilized Ic / Part: VIPer53
• Input Voltage: 90 V to 265 V
• Output Voltage: 3.3 V, 5 V, 12 V
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: VIPer53-E
• Kit Application Type: Power Management
• Application Sub Type: SMPS
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: VIPer53-E
• Other names: 497-5865

Operation pictures
12/36
Figure 12. Oscillator schematic
The switching frequency settings shown on the graphic here below is valid within the
following boundaries:
Figure 13. Oscillator settings
R
F
SW
t
> 2k
= 300kHz
Frequency (kHz)
100
300
10
1
Rt
Ct
2.2nF
4.7nF
10nF
22nF
OSC
320
SOURCE
VDD
Vcc
R
T
10
(K )
1nF
section
PWM
100
VIPer53 - E