EV1340QI-E Enpirion, EV1340QI-E Datasheet - Page 3

• Manufacturer Part Number: EV1340QI-E
• Description: Power Management IC Development Tools EV1340Q1 Eval Board
• Manufacturer: Enpirion
• Type: DC/DC Converters, Regulators & Controllersr

Specifications of EV1340QI-E

• Rohs: yes
• Product: Evaluation Board
• Tool Is For Evaluation Of: EV1340QI
• Input Voltage: 3.07 V to 3.53 V
• Description/function: Features a customer programmable output voltage by means of a resistor divider, this evaluation board, as shipped is populated with one option for VOUT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Output Current: 5 A
• For Use With: EV1340QI

STEP 4:
STEP 5:
STEP 6:
STEP 7:
STEP 7A: Power Up/Down Behavior
pulse generator (output disabled) signal to the middle pin of ENA and Ground.
Set the pulse amplitude to swing from 0 to 2.5 volts. Set the pulse period to
10msec, duty cycle to 50% and fast transition (<1usec.) Hook up oscilloscope
probes to ENA, POK and V
output. Observe the V
goes low.
STEP 8:
CAUTION:
susceptible to damage. Customers are advised to limit the VDDQ power supply
compliance to an acceptable level to mitigate this issue.
ALWAYS power down device before changing any board level components!
CAUTION:
EV1340QI is powered on. Doing so could result in damage to the part.
CAUTION:
evaluation board comes with reverse polarity protection diodes, it may not
protect the device for all conditions.
CAUTION:
polarity or voltage clamping protection on it.
Connect the VDDQ Power Supply to the input power connectors,
VDDQ (J13) and GND (J7) as indicated in Figure 4 and set the power
supply to the desired voltage (≤1.8V). For VDDQ more than 1.5V, the
loop compensation values will have to be adjusted according to the
datasheet.
Connect AVIN power supply to the input connectors AVIN (J15) and
GND (J7) as indicated in Figure 4 and set the power supply to the
desired voltage (3.3V nominal).
Connect the load to the output connectors VOUT (J4) and GND (J6),
as indicated in Figure 4.
Power up the board by turning on the AVIN power supply first and then
the VDDQ supply. Next, move the ENA jumper to the enabled position.
The EV1340QI is now powered up and VOUT should be half of VDDQ.
You are free to make Efficiency, Ripple, Line/Load Regulation, Load
transient, Power OK, and temperature related measurements.
You can also operate the board by leaving the ENA jumper in the high
position. Then apply AVIN to the board. Next, turn on the VDDQ
supply. The output will ramp up and down as half of VDDQ all the time.
If the device is powered up into a short-circuit condition, it is
Except ENA, no other jumpers can be changed while the
Be mindful of the polarity and magnitude. Even though the
The AVIN power connection on this board has no reverse
OUT
voltage ramps as ENA goes high and again as ENA
OUT
with clean ground returns. Enable pulse generator
Page 3 of 7
– Remove ENA jumper and connect a
EV1340QI Evaluation Board User Guide
March 2012