MAX8550EVKIT View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8550EVKIT Datasheet PDF : 8 Pages
| |||
MAX8550 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
1.0µH, 20A, 1.6mΩ power inductor
L1
1 (12.6mm x 12.6mm x 5.2mm)
TOKO FDA1254-1R0M
Q1
Q2
R1
R2, R3
R4
R5
R6, R7, R8
R9, R10, R11
R12
R13
U1
None
None
1
n-channel MOSFET 30V, 9mΩ (SO-8)
International Rectifier IRF7821
1
n-channel MOSFET 30V, 5mΩ (SO-8)
International Rectifier IRF7832
1 10Ω ±5% resistor (0603)
2 100kΩ ±5% resistors (0603)
1 75kΩ ±1% resistor (0603)
1 124kΩ ±1% resistor (0603)
2 Not installed (0603)
3 0Ω resistors (0603)
1 Not installed (1812)
1 20Ω ±5% resistor (0603)
1
MAX8550ETI (28-pin 5mm x 5mm Thin
QFN)
6 Shunts
1 MAX8550 EV kit PC board
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Central
Semiconductor
631-435-1110 www.centralsemi.com
International
Rectifier
310-322-3331 www.irf.com
Kemet
Sanyo USA
TDK
TOKO America
864-963-6300 www.kemet.com
619-661-6835 www.sanyo.com
847-803-6100 www.component.tdk.com
847-297-0070 www.tokoam.com
Note: Indicate that you are using the MAX8550 when contact-
ing these component suppliers.
Recommended Equipment
• 5VDC power supply (500mA rated)
• 9VDC to 20VDC power supply (5A rated)
• Two digital voltmeters (DVM)
Quick Start
The MAX8550 EV kit is fully assembled and tested. Follow
these steps to verify board operation. Do not turn on the
power supplies until all connections are completed.
1) Ensure a shunt is placed across pins 1-4 of jumper
JU1 to enable OVP and UVP.
2) Ensure a shunt is placed across pins 1-2 of jumper
JU2 to set the switching frequency to approximately
600kHz.
3) Ensure a shunt is placed across pins 1-2 of jumper
JU3 to enable low-noise PWM mode.
4) Ensure a shunt is placed across pins 2-3 of jumper
JU4 to disable the VDDQ buck output.
5) Ensure a shunt is placed across pins 1-2 of jumper
JU5 to enable the VTT and VTTR outputs.
6) Ensure a shunt is placed across pins 2-3 of jumper
JU6 to set the board in normal operation mode.
7) Connect the 5VDC power supply across the VDD
pad and the PGND pad nearest VIN.
8) Connect the 12VDC power supply across the VIN
pad and the corresponding PGND pad.
9) Turn on both of the power supplies.
10)Set JU4 (1-2). This turns VDDQ on.
11)Using one of the DVMs, verify that the VDDQ voltage
between the VDDQ and PGND pads is 2.5V (±2%).
12)Using the other DVM, verify that the VTT voltage
between the VTT and PGND pads is 1.25V (±2%).
Detailed Description
Jumper Selection
Table 1. Overvoltage/Undervoltage
Control Input (OVP/UVP)
JUMPER
SHUNT
POSITION
DESCRIPTION
JU1
1-2
Disable OVP and UVP.
JU1
1-3
Enable UVP. Disable OVP.
JU1
1-4*
Enable OVP and UVP.
JU1
Open Enable OVP. Disable UVP.
*Default position.
Note: Refer to the MAX8550/MAX8551 or MAX8550A data
sheet for additional information on OVP/UVP. This mode does
not directly apply to the MAX8551.
2 _______________________________________________________________________________________
Share Link: 