EN5364QI-E Enpirion, EN5364QI-E Datasheet - Page 8

• Manufacturer Part Number: EN5364QI-E
• Description: Power Management Modules & Development Tools Eval Bd 6A Syn Buck PWM DC-DC Converter
• Manufacturer: Enpirion
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EN5364QI-E

• Input Voltage: 2.375 V to 6.6 V
• Output Voltage: 0.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Product: Power Management Modules
• For Use With/related Products: EN5364QI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Test Recommendations
To guarantee measurement accuracy, the following precautions should be
observed:
Input and Output Capacitors
The input capacitance requirement is between 20-40uF for the EN5364QI and
30-40uF for the EN5394QI. The voltage rating should be high enough to provide
adequate margin for your application. This evaluation board is populated with
2x22uF, 1206, X5R capacitors.
The output capacitance requirement is approximately 50uF at the voltage
sensing point for the EN5364QI and approximately 100uF for the EN5394QI. The
board is populated with a 47uF, 1206, X5R and a 10uF, 0805, X7R capacitor for
the EN5364QI and 2 x 47uF, 1206, X5R capacitor for the EN5394QI evaluation
board.
NOTE: Capacitors must be X5R or X7R dielectric formulations to ensure
adequate capacitance over operating voltage and temperature ranges.
1. Make all input and output voltage measurements at the board using
2. Measure input and output current with series ammeters or accurate
3. Use a low-loop-inductance probe shown here to measure switching
4. The board includes a 10k pull-up for the POK signal and ready to
5. A 15nF soft-start capacitor is populated on the board for ~1msec soft-
6. Please consult Enpirion Applications Support if you are planning to
the test points provided. This will eliminate voltage drop across the line
and load cables that can produce false readings.
shunt resistors. This is especially important when measuring efficiency.
signals to avoid noise coupling into the probe ground lead. J10 is a
convenient point to measure output ripple and load transient deviation.
Please refer to Enpirion’s Output Ripple Measurement application note
for more accurate ripple measurements.
monitor the power OK status.
start time.
perform any special EMI or noise measurements on this evaluation
board.
Figure – 6 : Low-loop-inductance Oscilloscope Probe
EN5364QI-EN5394QI Evaluation Board Application Note
Page 8 of 10
November 2009 V_3