ISL6227EVAL2 Intersil, ISL6227EVAL2 Datasheet - Page 6

• Manufacturer Part Number: ISL6227EVAL2
• Description: EVALUATION BOARD 2 ISL6227
• Manufacturer: Intersil

Specifications of ISL6227EVAL2

• Main Purpose: Special Purpose DC/DC, DDR Memory Supply
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 0.9 ~ 5.5V
• Voltage - Input: 5 ~ 24V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6227
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Step 3: Set control jumper as illustrated in Table 1 on
Step 4: Power up the EVAL board
Step 5: Take initial measurements
NOTE: Terminals J1 (EN1) and J12 (EN2) may be connected
to a pulse generator for controlled on/off operation and may
be observed with an oscilloscope. The magnitude of the
enable signal must be less than VCC voltage, 5V.
page 5.
connected to the VIN terminals J2 and/or J3 and make
sure the output voltage is set to zero volts.
of the 24VDC power supply to 5.0 VDC.
of the 5VDC power supply to 5VDC.
(The LED should become red at this point)
VOUT1 voltage should be within 2.45V to 2.55V (2.5V
±2%).
The voltage reading should within 1.764V to 1.836V
(1.8V ±2%).
4a. Take the adjustable 24VDC power supply that is
4b. Turn on the 24VDC power supply.
4c. While reading the DVM, increase the output voltage
4d. Turn on the 5V VCC power supply.
4e. While reading the DVM, increase the output voltage
4f. The LED on both channels should be Red.
5a. Install the EN1 shunt jumper JP5.
5b. This should bring the LED of CR1 to Green
5c. Install the EN2 shunt jumper JP6.
5d. Read the DVM connected to the VOUT1 terminal J5.
5e. Read the DVM connected to the VOUT2 terminal J6.
-This would bring the LED of CR2 to Green.
6
Application Note 1068
Step 6: Vary operating conditions
Step 7: Power off
between 5VDC to 24 VDC.
Channel 1 PWM or JP4 for channel 2 PWM, to the
position opposite the silk screen “FCCM”.
6a. The 24V VIN Power Supply may be adjusted
6b. If Hysteretic operation is desired, move jumper J3 for
7a. Turn off the VCC power supply
7b. Turn off the VIN power supply
-The electronic load can be adjusted between 0A to
5A to check the output regulation.
July 14, 2008
AN1068.1