Full Bridge / Phase Shift LLC Firmware
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UCD3138 Phase Shift LLC quickly gets a designer through evaluation to production in power supply designs based on a resonant LLC topology by providing firmware with ZVS operation and mode switching capability to achieve high efficiency across wider operating conditions.
The resonant LLC topology reduces switching losses and EMI while offering great efficiency through a full-bridge converter with zero-voltage switching on the primary side of the converter. It scales to high power output levels and can operate well with a wide range of input voltages.
This firmware comes with native support for following features:
- Dynamic mode switching between frequency to phase
- Cycle by cycle current limit with duty cycle matching
- Short-circuit constant current operation
- Overcurrent/overload protection
- Current sharing
- Accurate and adaptable primary-to-secondary timing control
- Fully flexible dead time control between all MOSFETs control signals
- Hysteretic burst mode (based on voltage mode control) for light load efficiency
- Constant current, constant power control under overload
- Optimized loop coefficients for different operating regions
- PMBus 1.2 with 400 KHz for telemetry operations
- Application examples
- EVM and firmware collaterals