Enpirion
®
Power Evaluation Board User Guide
EN6360QI PowerSoC
Enpirion EN6360QI 8A DC/DC
Converter w/Integrated Inductor
Evaluation Board
Introduction
Thank you for choosing Altera Enpirion power products!
•
The EN6360QI features integrated inductor, power MOSFETS, Controller,
bulk of the compensation Network, and protection circuitry against system
faults. This level of integration delivers a substantial reduction in footprint
and part count over competing solutions. However, the evaluation board is
not optimized for minimum footprint; rather for ease of evaluation through
programming options, clip leads, test points etc.
•
The EN6360QI features a customer programmable output voltage by
means of a resistor divider. The resistor divider allows the user to set the
output voltage to any value within the range 0.6V to (V
IN
-V
DROPOUT
). See
Figure -1. The Dropout voltage is ~0.1*I
LOAD
. The evaluation board, as
shipped is populated with a single R
A
, and four possible R
B
resistors. The
R
B
resistors can be chosen by jumper settings to achieve several output
voltages.
•
The EN6360QI includes the bulk of the compensation network internally.
However, an external phase-lead (zero) capacitor and resistor is required
as part of the feedback. This network is shown in Figure -1. Appropriate
component values allow for optimum compensation for a given Input
voltage and choice of loop bandwidth. The equations in Figure 1 provide
the details to calculate the component values.
•
A footprint is provided for an SMC connector (not populated) for S_IN. A
clock source may be applied to S_IN to synchronize the device switching
frequency to the external source. Please see the datasheet for the
frequency lock frequency range. S_OUT will output a clock signal
synchronous with the switching frequency. S_OUT of one EN6360QI may
be connected to S_IN of another EN6360QI device.
•
Jumpers are provided for logical programming of the following signals:
o
ENABLE (ENA)
Enable may also be controlled using an external switching source
by removing the jumper and applying the enable signal to the
connector middle pin and ground.
o
Master/Slave ternary input (M/S)
o
Enable Pre-Bias Input (SEL)
o
Jumpers are also provided for getting various output voltages.
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