onsemi NCP13994 Current Mode Resonant Controllers
onsemi NCP13994 Current Mode Resonant Controllers are an enhanced, high-performance current mode controller for half-bridge resonant converters. The onsemi controller incorporates a 700V-rated high voltage startup current source and X2-Capacitor discharge function. The device also features gate drivers, simplifying the layout and reducing the number of external components. The NCP13994 features a dedicated output to interface with the PFC controller in applications where a PFC front stage is needed.
Features
- Up to 700V operating range for the high-side driver
- Up to 700V operating range for HV startup current source
- Line brown-out and OVP protections
- X2 cap discharge function
- Clamped output drivers
- Up to 30V supply
- High-frequency operation from 20kHz up to 750kHz
- Current mode control scheme
- Automatic dead-time with maximum dead-time clamp
- Enhanced startup sequence for fast resonant tank stabilization
- Light load operation mode for improved efficiency
- Quiet skip operation mode to minimize transformer acoustic noise
- Off-mode operation for extremely low no-load consumption
- Latched or auto-recovery overload protection
- Latched or auto-recovery output short circuit protection with the current reduction
- Latched input for severe fault conditions, e.g., OVP or OTP
- Out-of-resonance switching protection
- Open feedback loop protection
- Precise brown-out protection
- PFC stage operation control according to load conditions
- Startup current source with extremely low leakage current
- Dynamic self-supply (DSS) operation in off-mode or fault modes
Applications
- Adapters and offline battery chargers
- Flat panel display power converters
- Computing power supplies
- Industrial and medical power sources
Block Diagram
Related Application
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Publicado: 2022-11-10
| Actualizado: 2025-11-23