Overview
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Description
Designed to address the challenges of higher-power isolated conversion, this 75 W solution delivers excellent efficiency while maintaining the simplicity and cost advantages of a flyback topology. By retaining this architecture, the design minimizes overall system cost and complexity compared to alternative higher-power approaches.
Optimized for harsh industrial environments, it ensures low heat dissipation, controlled component stress, and reliable thermal performance, achieving up to 94% peak efficiency. The no optocoupler synchronous flyback architecture further enhances reliability by reducing component count and eliminating common failure points. The result is a robust, space-efficient solution providing stable low-voltage isolation, high efficiency, and long-term reliability in demanding applications.
APPLICATIONS
- Isolated Telecom
- Isolated Auxiliary
- Housekeeping Power Supplies
- Medical Power Supplies
- Automotive
- Industrial
- Medical
Features & Benefits
- Flyback topology minimizes cost versus high-power alternatives, enabling a simpler and more economical power architecture.
- No‑optocoupler synchronous flyback topology for increased reliability and reduced component-related failures.
- Low heat dissipation - stable, reliable low‑voltage isolation with up to 94% peak efficiency for compact industrial designs.
Solution Requirements:
- Input Voltage: 18 VDC – 32 VDC (24 VDC Nominal)
- Output Voltage: 11.80 VDC – 12.27 VDC (12.20 VDC Nominal)
- Output Current: 6.25 A (max)
- Output Power: 75 W
- Output Voltage Ripple (Pk-Pk): 15 mV
- Load Transient Range (Pk-Pk): 2 V (1 A to 6.25 A)
Performance Requirements:
- 92% Efficiency: Vin = 18 V, Iout = 6.25 A
- 93% Efficiency: Vin = 24 V, Iout = 6.25 A
- 93% Efficiency: Vin = 32 V, Iout = 6.25 A
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Markets and Technologies
Parts Used
Documentation & Resources
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ADPS43781-RD Design Files7/31/2026ZIP14 MB
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