MULTIPHSPOL-RD Silicon Laboratories Inc, MULTIPHSPOL-RD Datasheet - Page 20

• Manufacturer Part Number: MULTIPHSPOL-RD
• Description: KIT REFERENCE DESIGN FOR SI825X
• Manufacturer: Silicon Laboratories Inc
• Type: Other Power Managementr

Specifications of MULTIPHSPOL-RD

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 40A
• Voltage - Input: 10 ~ 15V
• Regulator Topology: Buck
• Frequency - Switching: 391kHz
• Board Type: Fully Populated
• Utilized Ic / Part: SI8250, SI8251, SI8252
• Input Voltage: 10 V to 15 V
• Output Voltage: 3.3 V
• Interface Type: USB
• Product: Power Management Modules
• Supply Current: 10 A
• For Use With/related Products: Si8250
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1323

Si825x Multi-Phase POL-RD
10.2. Switches and LEDs
One switch is provided on the target board. Switch S1 is connected to the RESET pin of the Si8250. Pressing S1
puts the Si8250 device into its hardware-reset state.
Two LEDs are also provided on the target board. The POWER IN LED is used to indicate that the POL target board
is properly powered. The POWER GOOD LED is used to indicate that VOUT power is being regulated by the
Si8250. See Table 2 for a description of each LED and on board switches.
10.3. V
The user-provided power supply should be connected to connectors J1 and J2 where J2 is the reference. The
power source must be from 10–15 V with at least 10 A maximum output.
10.4. V
Connectors J3 and J4 are the dc output from the Si8250 Multi-Phase POL Target Board. A load (preferably
electronic) should be connected here.
10.5. V
Connectors J5 and J4 provide an alternate output monitoring note that minimizes output loading while V
being monitored.
20
IN
OUT
OUT
(J1, J2)
POWERGOOD
(J3, J4)
(J5, J4)
POWERIN
Label
RST
Table 2. Target Board Switch and LED Descriptions
Jumper #
Jumper #
Jumper #
J1
J2
J3
J4
J5
J4
Reference
LED
LED
Table 3. J1, J2 Pin Descriptions
Table 4. J3, J4 Pin Descriptions
Table 5. J5, J4 Pin Descriptions
S1
Alternate V
Confidential Rev. 0.2
Si8250 Reset Switch
Indicates that V
Indicates that V
3.3 V (Nominal), 40 A max
OUT
10–15 V, 10 A
Description
Description
Description
Sense, minimal loading
GND
GND
GND
IN
OUT
is operating properly
Description
is regulated properly
OUT
is