The LT8316 is a micropower, high voltage flyback controller. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer.
Description
At start-up, the LT8316 charges its INTVCCCC capacitor via a high voltage current source. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer minimizing standby power dissipation.
The LT8316 operates from a wide range of input supply voltages and can deliver up to 100W of power. It is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.
Drawings/Packages
Key Features
- Wide Input Voltage Range: 16V to 600V
- No Opto-Isolator Required for Regulation
- Quasi-Resonant Boundary Mode Operation
- Constant-Current and Constant-Voltage Regulation
- Low-Ripple Light Load Burst Mode® Operation
- Low Quiescent Current: 75μA
- Programmable Current Limit and Soft-Start
- TSSOP Package with High-Voltage Pin Spacing
General Applications
- Isolated Telecom, Automotive, Industrial, Medical Power Supplies
- Isolated Off-Line Housekeeping Power Supplies
- Electric Vehicles and Battery Stacks
- Multi-output Isolated Power Supplies for Inverter Gate Drives
Evaluation Board
YES — The LT8316 can be evaluated with the DC2793A, DC2718A and DC2781A.
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