MAX17000EVKIT+ Maxim Integrated Products, MAX17000EVKIT+ Datasheet - Page 4

• 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

The EV kit features a 2-pin jumper (JU4) for pulse-
skipping control input. This input determines the mode
of operation under normal steady-state conditions and
dynamic output-voltage transitions. See Table 5 for
JU4 functions.
The EV kit features a 2-pin jumper (JU6) to select the
reference input voltage (REFIN), which regulates the
VTT and VTTR outputs. By default (REFIN connected to
VDD through JU6), the VTT and VTTR outputs track
V
To set the adjustable output for VTT and VTTR, remove
the shunt from JU6 and connect an external 0.5V to 1.5V
supply at the REFIN pad. Another adjustable output
option for VTT and VTTR is to install resistors R19 and
R20 with values according to the following equation:
Table 6 summarizes the JU6 functions.
MAX17000 Evaluation Kit
Table 5. Jumper JU4 Functions (SKIP)
* Default position.
4
Not installed*
CSL
POSITION
Installed
SHUNT
_______________________________________________________________________________________
/2.
V
VTT
Pulse-Skipping Control Input ( SKIP )
=
External Reference Input (REFIN)
V
VTTR
Connected to VDD
Connected to
SKIP PIN
=
AGND
V
REFIN
=
V
OUT
Forced-PWM operation
Pulse-skipping mode
(without forced-PWM
during transitions)
⎛
⎜
⎝
OPERATIONAL
R
19
MODE
R
+
20
R
20
⎞
⎟
⎠
The MAX17000 EV kit can be evaluated with dual-pack-
age MOSFET N3. To evaluate the kit with a dual-pack-
age MOSFET, remove MOSFETs N1 and N2 and install
N3. Vishay’s Si4916DY is an example of a dual-pack-
age MOSFET that fits the N3 pinout and orientation.
Table 6. Jumper JU6 Functions
(Reference Input)
* Default position.
Not installed
Not installed
POSITION
Installed*
SHUNT
Connected to REFIN pad
resistive dividers R19
V
Connected to VDD
(must be driven by
REFIN
external source)
and R20
REFIN
connected to
Dual-MOSFET Operation
V
V
the REFIN pad)
V
1.5V applied to
VTT
OUT
REFIN
VOLTAGE
V
(R20/(R19 +
AND V
R20))
CSL
(0.5V to
/2
VTTR