STEVAL-ISA029V1 STMicroelectronics, STEVAL-ISA029V1 Datasheet - Page 16

• 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

Primary regulation configuration example
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The switching frequency can be set to any value through the choice of R3 and C5. This
allows to optimize the efficiency of the converter by adopting the best compromise between
switching losses, EMI (Lower with low switching frequencies) and transformer size (Smaller
with high switching frequencies). For an output power of a few watts, typical switching
frequencies between 20kHz and 40kHz because of the small size of the transformer. For
higher power, 70kHz to 130kHz are generally chosen.
The R5 compensation resistor value sets the dynamic behavior of the converter. It can be
adjusted to provide the best compromise between stability and recovery time with fast load
changes.
VIPer53 - E