Block Diagram
EN5394QI
Figure 3: System block diagram.
Functional Description
Synchronous Buck Converter
The EN5394QI is a synchronous, programmable
power supply with integrated power MOSFET
switches and integrated inductor. The nominal
input voltage range is 2.375-6.6V. The output
voltage is programmed using an external resistor
divider network. The feedback control loop is a
type III, voltage-mode, and the device uses a
low-noise PWM topology. Up to 9A of continuous
output current can be drawn from this converter.
The 4MHz operating frequency enables the use
of small-size input and output capacitors.
The power supply has the following protection
features:
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03738
9
8/21/2009
www.enpirion.com
Rev:B