MIC28510
75V/4A Hyper Speed Controlпѓ¤
Synchronous DC/DC Buck Regulator
SuperSwitcher II General Description Features The Micrel MIC28510 is an adjustable–frequency,
synchronous buck regulator featuring unique adaptive on–
time control architecture. The MIC28510 operates over an
input supply range of 4.5V to 75V and provides a regulated
output of up to 4A of output current. The output voltage is
adjustable down to 0.8V with a guaranteed accuracy of В±1%. п‚ Micrel’s Hyper Speed Controlпѓ¤ architecture allows for ultra–
fast transient response while reducing the output capacitance
and also makes (High VIN) / (Low VOUT) operation possible.
This adaptive tON ripple control architecture combines the
advantages of fixed–frequency operation and fast transient
response in a single device.
The MIC28510 offers a full suite of protection features to
ensure protection of the IC during fault conditions. These
include undervoltage lockout to ensure proper operation
under power–sag conditions, internal soft–start to reduce
inrush current, foldback current limit, “hiccup” mode shortcircuit protection, and thermal shutdown.
All support documentation can be found on Micrel’s web
site at: www.micrel.com. п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ Hyper Speed Controlпѓ¤ architecture enables:
пЂ High Delta V operation (VIN = 75V and VOUT = 0.8V)
пЂ Small output capacitance …
