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Application Note 1713
ISL8126EVAL1Z Evaluation Board User Guide
Hardware Description
The ISL8126 integrates two voltage-mode synchronous buck
PWM controllers. It can be used either for dual independent
outputs or a 2-phase single-output regulator.
The ISL8126EVAL1Z evaluation board is used for performance
demo of the 2-phase single-output application. This
application note introduces the setup procedure and
performance of the ISL8126EVAL1Z evaluation board.
Recommended Equipment
• 0V to 22V power supply with at least 20A source current
capability
• Two electronic loads capable of sinking current up to 30A
• Digital multimeters (DMMs)
• 100MHz quad-trace oscilloscope.
Quick Start
1. Ensure that the circuit is correctly connected to the supply
and loads prior to applying any power.
2. Adjust the input supply to be 12V. Turn on the input power
supply.
3. Verify the output voltage is 1.2V. If PGOOD is set high, the
LED2 will be green. If PGOOD is set low, the LED2 will be
red. TP4 is the test post to monitor PGOOD.
TABLE 1. ELECTRICAL SPECIFICATIONS
PARAMETER MIN TYP MAX UNITS
V
IN
10 12 16 V
V
OUT
1.18 1.2 1.22 V
Rated Current 50 A
Switching Frequency 350 kHz
V
OUT
Peak-to-Peak Ripple 16 mV
P-P
FIGURE 1. ISL8126EVAL1Z EVALUATION BOARD
December 23, 2011
AN1713.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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