The MAX8513 evaluation kit (EV kit) demonstrates the
MAX8513's standard application circuit. This EV kit
operates from 9V to 16V, generating three positive
output voltages.
The MAX8513 EV kit includes a voltage-mode synchronous
step-down controller and two positive regulator
gain blocks. The main synchronous step-down controller
provides a 3.3V output with 2A output current. The positive
regulator gain blocks use an external n-channel
MOSFET pass transistor to generate 2.5V with 1.5A output
current from the main 3.3V output, and an external
pnp pass transistor to generate 12V with 0.100A output
current using a coupled inductor from the step-down
converter. The EV kit operates at 1.4MHz switching
frequency, allowing the use of ceramic capacitors.
The MAX8513 EV kit can be reconfigured for other
input voltage ranges or output voltages by selecting
appropriate external components. The EV kit circuit
features adjustable soft-start, current-limit, input
power-fail detect (PFI), power-on reset (POR), powerfail
output (PFO) and configurable power sequencing.
Operation up to 1.4MHz allows the use of tiny surface-
mount components and improves data rate in
DSL applications by reducing noise interference.
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