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Description
The ML4815CQ is a complete phase modulation control IC suitable for full bridge soft switching converters. Unlike conventional PWM circuits, the phase modulation technique allows for zero-voltage switching transitions and square wave drive across the transformer. The IC modulates the phases of the two sides of the bridge to control output power. It can be operated in current mode and the delay times for the outputs are externally programmable to allow the zero-voltage switching transitions to take place. Pulse-by-pulse current limit, integrating fault detection, and soft start reset are provided. The under-voltage lockout circuit features a 6V hysteresis with a low starting current to allow off-line start up with a low power bleed resistor. A shutdown function powers down the IC, putting it into a low quiescent state.
Specifications and features
• Full bridge phase modulation zero voltage switching circuit with programmable ZV transition times.
• Constant frequency operation to 500kHz.
• Current mode operation.
• Cycle-by-cycle current limiting with integrating fault detection and restart delay.
• Precision buffered 5V reference (+1%).
• Four 1.5A peak current totem-pole output drivers.
• Under-voltage lockout circuit with 6V hysteresis.
• Power DIP package allows higher dissipation. (* Some Packages Are Obsolete)Application Scenarios
The ML4815CQ is commonly used in full bridge soft switching converters. It is suitable for applications where zero-voltage switching transitions and square wave drive across the transformer are required. The IC is ideal for controlling output power in various power supply systems.
Comparison
Advantages• Phase modulation technique enables zero-voltage switching transitions. • Programmable ZV transition times for flexible operation. • Current mode operation for precise control. • Cycle-by-cycle current limiting with fault detection and restart delay. • Precision buffered 5V reference for accurate operation. • Four 1.5A peak current totem-pole output drivers for high performance. • Under-voltage lockout circuit with 6V hysteresis for reliable operation. • Power DIP package allows higher dissipation.
Disadvantages• Some packages are obsolete and may not be readily available.
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Datenblatt
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Shopping guide
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Beliebte Teile der gleichen Art
- Datasheet: Download ML4815CQ
- Chipdaten Teil: CD91-ML4815CQ
- Lagerhaus: China, Hongkong
- Versenden: Innerhalb von 24 Stunden
- Kostenloser Versand: Yes
- Bevorzugter Versand: Yes, 3-5 days
- Letzte Aktualisierung: 2024/09/20 05:32 +0800
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