onsemi NCP13994 Current Mode Resonant Controller

onsemi NCP13994 Current Mode Resonant Controller is 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 has gate drivers, simplifying the layout and reducing the external component count. 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

onsemi NCP13994 Current Mode Resonant Controller

Features

Applications

Block Diagram

husseinkey ELECTRONICS®

COMPANY