ISL9444EVAL1Z Intersil, ISL9444EVAL1Z Datasheet - Page 2

• Manufacturer Part Number: ISL9444EVAL1Z
• Description: Power Management IC Development Tools ISL9444 EVALUATION BOARD 1 - 40 Ld QFN - RoHS COMPLIANT
• Manufacturer: Intersil
• Type: PWM Controllersr

Specifications of ISL9444EVAL1Z

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: ISL9444
• Input Voltage: 6 V to 20 V
• Output Current: 25 A
• For Use With: ISL9444

What’s Inside
The Evaluation Board Kit contains the following materials:
• The ISL9444EVAL1Z
• The ISL9444 datasheet
• This EVAL KIT document
Recommended Testing
Equipment
The following materials are recommended to perform testing:
• 0V to 20V Power Supply with at least 10A Source Current
• Three Electronic Loads Capable of Sinking Current up to 7A
• Digital Multimeters (DMMs)
• 100MHz Quad-Trace Oscilloscope
Quick Test Guide
1. ISL9444 has a total of three PWM outputs. Jumpers J3, J4
2. Ensure that the circuit is correctly connected to the supply and
3. Turn on the power supply.
4. Adjust input voltage VIN within the specified range and
5. Adjust load current within the specified range and observe
6. Use an oscilloscope to observe output voltage ripple and
Capability
and J6 provide rich options to control these three PWM
outputs. Please refer to Table 2 for the desired operating
option. The default option is to enable PWM1 when VCC5V is
ready and then enable PWM2 and PWM3 simultaneously
after PWM1 finishes start-up (i.e., PGOOD1 is high).
electronic loads prior to applying any power. Please refer to
Figure 2 for proper set-up.
observe output voltage. The output voltage variation should
be within 3%.
output voltage. The output voltage variation should be
within 3%.
Phase node ringing. For accurate measurement, please refer
to Figure 3 for proper test set-up.
2
Application Note 1712
JUMPER
J3
J4
J6
#
EN (Pin 1-2)
DIS (Pin 2-3)
PG1 (Pin 1-2)
GND (Pin 3-4)
PFO_#
(Pin 5-6)
EN2 (Pin 1-2)
GND (Pin 3-4)
VCC5V
(Pin 5-6)
POSITION
Enable PWM1 when VCC5V is ready.
Disable PWM1
Enable PWM2 when PGOOD1 is high. If this
option is chosen, PWM2 will be enabled after
PWM1 finishes start-up.
Disable PWM2
Enable PWM2 when PFI is high. In the
ISL9444EVAL1Z, PFI is connected to the input
voltage through a resistor divider. If this
option is chosen, PWM2 will be enabled when
the input voltage is around 6.4V
Enable PWM3 when EN2 is high. In this
option, PWM3 is tracking with PWM2.
Disable PWM3
Enable PWM3 when VCC5V is ready.
TABLE 2.
FUNCTION
December 22, 2011
AN1712.0