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The device is a step-down controller specifically designed to provide extremely high efficiency conversion, with losses current sensing tecnique.
The "constant on-time" topology assures fast load transient response. The embedded "voltage feed-forward" provides nearly constant switching frequency operation.
An integrator can be introduced in the control loop to reduce the static output voltage error.
The available remote sensing improve the static and dynamic regulation recovering the wires voltage drop. Pulse skipping technique reduces power consumption at light load. Drivers current capability allows output current in excess of 20A.
` CONSTANT ON TIME TOPOLOGY ALLOWS OPERATION WITH LOWER DUTY THAN PWM TOPOLOGY ` VERY FAST LOAD TRANSIENTS ` 5V Vcc SUPPLY ` 1.5V TO 28V INPUT VOLTAGE RANGE ` 0.9V ±1% VREF ` MINIMUM OUTPUT VOLTAGE AS LOW AS 0.9V ` SELECTABLE SINKING MODE ` LOSSLESS CURRENT LIMIT ` REMOTE SENSING ` OVP,UVP LATCHED PROTECTIONS ` 600A TYP QUIESCENT CURRENT ` POWER GOOD AND OVP SIGNALS ` PULSE SKIPPING AT LIGHT LOADS
L6995 Typical Application
· I/O BUS FOR CPU CORE SUPPLY · NOTEBOOK COMPUTERS · NETWORKING DC-DC · DISTRIBUTED POWER