STEVAL-ISA029V1 STMicroelectronics, STEVAL-ISA029V1 Datasheet - Page 21

• Manufacturer Part Number: STEVAL-ISA029V1
• Description: BOARD EVAL BASED ON VIPER53-E
• Manufacturer: STMicroelectronics
• Series: VIPER™r
• Type: MOSFET & Power Driverr

Specifications of STEVAL-ISA029V1

• Design Resources: STEVAL-ISA029V1 Gerber Files STEVAL-ISA029V1 Schematic STEVAL-ISA029V1 Bill of Material
• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 3, Isolated
• Power - Output: 13W
• Voltage - Output: 12V, 3.3V, -24V
• Current - Output: 1A, 100mA, 40mA
• Voltage - Input: 85 ~ 300VAC
• Regulator Topology: Flyback
• Frequency - Switching: 60kHz
• Board Type: Fully Populated
• Utilized Ic / Part: VIPer53
• Input Voltage: 85 V to 300 V
• Output Voltage: 12 V
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: VIPer53-E
• Kit Application Type: Power Management
• Application Sub Type: Power Supply
• Kit Contents: Board
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: VIPer53-E
• Other names: 497-6458; STEVAL-ISA029V1

VIPer53 - E
Note:
Equation 3
Where Ip(V
voltage of V
The power point PSTBY where the converter is going into burst mode does not depend on
the input voltage.
The standby frequency F
Equation 4
The ratio between the nominal and standby switching frequencies can be as high as 4,
depending on the Lp value and input voltage.
Figure 20. Standby mode implementation
COMPbl
COMPbl
Minimum
turn on
350ns
P
600ns
ton
P
P
STBY
RST
IN
2
(1V).
) is the peak Power MOSFET current corresponding to a compensation
V
V
COMPsd
COMPoff
3
SWstby
P
STBY
F
SWstby
is given by:
P
3
=
SWstby
1
-- -
2
2
V
F
COMPbl
SWnom
=
P
---------------- -
P
STBY
RST
Ip
1
2
F
V
F
SWnom
SWnom
COMPbl
1
2
Lp
V
COMP
F
SW
Standby mode
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