MAX17000EVKIT+ Maxim Integrated Products, MAX17000EVKIT+ Datasheet - Page 3

• Manufacturer Part Number: MAX17000EVKIT+
• Description: KIT EVAL FOR MAX17000
• Manufacturer: Maxim Integrated Products

Specifications of MAX17000EVKIT+

• Main Purpose: Special Purpose DC/DC, DDR Memory Supply
• Outputs And Type: 3, Non-Isolated
• Power - Output: 19.8W
• Voltage - Output: 1.8V, 0.9V, 0.9V
• Current - Output: 10A, 2A, 3mA
• Voltage - Input: 7 ~ 20V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MAX17000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Several jumper settings in the following tables illustrate
features of the MAX17000 EV kit. Refer to the
MAX17000 IC data sheet for a more detailed descrip-
tion of each function.
The MAX17000 EV kit features a 2-pin jumper (JU1) to
enable or disable the SMPS overvoltage protection
(OVP) feature and output-discharge mode. By default
(JU1 = open), the OVP input pin is pulled high to VDD
through R4. The default setting enables the SMPS OVP.
Place a shunt on JU1 to disable the SMPS OVP. Select
the JU1 settings to drive the OVP mode control as
shown in Table 2.
Table 1. Default Jumper Settings
Table 2. Jumper JU1 Functions (OVP)
* Default position.
JUMPER
Not installed*
Detailed Description of Hardware
POSITION
JU1
JU2
JU3
JU4
JU5
JU6
Installed
SHUNT
SHUNT POSITION
Not installed
Not installed
Not installed
Not installed
Installed
Connected to AGND
_______________________________________________________________________________________
Connected to VDD
1-2
OVP PIN
OVP Mode Control (OVP)
V
Jumper Selection
Forced-PWM operation
VTT
Normal operation
Normal operation
, V
OUT fixed 1.8V
OVP enabled
FUNCTION
VTTR
OVERVOLTAGE
PROTECTION
Disables OVP
Enables OVP
track V
CSL
/2
MAX17000 Evaluation Kit
The MAX17000 EV kit provides a 3-pin jumper (JU2) to
control the feedback input (FB), which sets the V
(OUT) output voltage. Place a shunt across pins 1-2
(default) for a fixed 1.8V output or across pins 2-3 for a
fixed 1.5V output. For an adjustable output (1V to 2.7V),
uninstall the JU2 shunt and connect FB to a resistive
divider from the output voltage. Install feedback resis-
tors with values according to the following equation:
where V
for the desired output voltage. Table 3 summarizes
jumper JU2’s function.
The EV kit features independent standby and shutdown
controls by implementing jumpers JU3 and JU5 to con-
trol the STDBY and SHDN inputs, respectively. Jumpers
JU3 and JU5 allow flexible sequencing to support all
DDR operating states. The shutdown and standby con-
trol logic is illustrated in Table 4.
Table 3. Jumper JU2 Functions (FB)
* Default position.
Table 4. Jumper JU3 (STDBY) and JU5
(SHDN) Functions
* Default position.
X = Don’t care condition.
Not installed
(STDBY)
installed*
POSITION
Installed
SHUNT
SHUNT POSITION
JU3
Not
1-2*
X
2-3
FB
Standby Control Input ( STDBY ) and
= 1V. Use 10kΩ for R15, and calculate R14
installed*
Installed
installed
(SHDN)
Shutdown Control Input ( SHDN )
Regulates to 1V
JU5
Not
Not
Connected to
Connected to
V
FB PIN
AGND
OUT
VDD
=
OUTPUT
Disabled
Enabled
Enabled
(OUT)
V
V
FB
DDQ
Feedback Input (FB)
⎛
⎜
⎝
1
V
+
OUT
R
R
14
15
Disabled
Disabled
Enabled
= V
V
V
V
⎞
⎟
⎠
VTT
DDQ
OUT
OUT
FB
(1 + (R14/R15))
= 1.8V
= 1.5V
(OUT)
Disabled
Enabled
Enabled
VTTR
DDQ
3