MAX17007EVKIT+ Maxim Integrated Products, MAX17007EVKIT+ Datasheet - Page 4

• Manufacturer Part Number: MAX17007EVKIT+
• Description: KIT EVAL FOR MAX17007
• Manufacturer: Maxim Integrated Products
• Series: Quick-PWM™r

Specifications of MAX17007EVKIT+

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.2V, 1.5V
• Current - Output: 12A, 12A
• Voltage - Input: 7 ~ 24V
• Regulator Topology: Buck
• Frequency - Switching: 270kHz, 330kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MAX17007
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX17007 EV kit can be evaluated with OUT1
configured as a preset, adjustable, or dynamic output
voltage. The OUT1 voltage (V
voltage (1.05V) by connecting REFIN1 to VDD. For
adjustable and dynamic output voltages, OUT1 is reg-
ulated to the voltage set at REFIN1. See the
Adjustable Voltage and Dynamic Voltage sections for
more details. Table 4 also lists the JU1 and JU2
jumper configurations for each output-voltage type.
The OUT1 output voltage can be adjusted up to 2V by
applying a DC voltage (0 to 2V) to the REFIN1 test
point. When OUT1 is used as an adjustable output
voltage, remove the shunt from jumper JU1.
The MAX17007 regulates OUT1 to the voltage set at
REFIN1. By changing the voltage at REFIN1 between
two set voltages, the MAX17007 can be used in
applications that require dynamic output-voltage
changes. The external MOSFET (N7) is used to
switch resistor R8 in and out of the REFIN1 resistor-
divider network, changing the voltage at REFIN1. A
logic-high on the gate turns on N7, resulting in
V
resulting in V
control the gate of the external MOSFET (N7). To con-
figure different dynamic output voltages, see the
Evaluating Other Dynamic Voltages section.
MAX17007 Evaluation Kit
Table 4. Jumper JU1 and JU2 Functions
* Default position.
X = Don’t-care condition.
4
installed
SHUNT POSITION
OUT1
JU1
2-3*
Not
1-2
_______________________________________________________________________________________
= 1V. A logic-low on the gate turns off N7,
Instal l ed *
installed
JU2
Not
X
X
OUT1
dividers R7 and R9
Connected to VDD
Connected to REF
Connected to REF
external voltage (0
to 2V) through the
REFIN1 test point
= 1.2V. Jumper JU2 is used to
Connected to an
through voltage-
through voltage-
dividers R7 and
REFIN1 PIN
(R8 || R9)
OUT1 Voltage (V
OUT1
) is set to the preset
Adjustable Voltage
Dynamic Voltage
OUT1 VOLTAGE
V
V
OUT1
V
OUT1
V
(adjustable)
OUT1
(dynamic)
(dynamic)
OUT1
(preset)
= V
= 1.05V
= 1.2V
= 1V
OUT1
REFIN1
)
The MAX17007 EV kit output is configured for
dynamic voltages of 1V (V
(V
adjusted between 0 and V
ate R7, R8, and R9 resistor values. The two voltage
set points are determined by the following equations:
where V
The MAX17007 EV kit can be evaluated with OUT2
configured as a preset or adjustable output voltage.
Table 5 lists the OUT2 voltage (V
is set to the preset voltage (1.5V) by connecting FB2
to REF and uninstalling resistors R5 and R6. To adjust
V
JU3 and install appropriate R5 and R6 feedback resis-
tors. Install resistor R6 with a 10kΩ ±1% resistor and
select resistor R5 according to the following equation:
where V
Table 5. Jumper JU3 Functions
* Default position.
POSITION
OUT2
installed
OUT1(HIGH)
SHUNT
1-2*
Not
2-3
from 0.7V to 2V, remove the shunt from jumper
REF
FB2
Evaluating Other Dynamic Voltages
V
OUT LOW
(resistors R5 and R6
(resistors R5 and R6
should be removed)
Connected to OUT2
should be removed)
V
= 2V.
= 0.7V.
dividers R5 and R6
Connected to VDD
Connected to REF
OUT HIGH
). However, the dynamic voltages can be
through resistor-
1
(
FB2 PIN
1
R
(
5
=
)
=
R
)
6
⎛
⎜
⎝
=
⎛
⎜
⎝
(
R
V
⎛
⎜
⎝
OUT2 Voltage (V
V
8
(
OUT
R
REF
R
FB
||
7
8
R
R
+
2
||
OUT1(LOW)
9
9
2
m od i fi cati ons and op er ati on)
R
R
by selecting appropri-
)
C om b i ned m od e sel ected
( see the C om b i ned - M od e
9
9
+
−
OUT2
V
)
O p er ati on secti on for
⎞
⎟
⎠
R
1
OUT
OUT2 VOLTAGE
⎞
⎟
⎠
V
7
necessar y b oar d
REF
V
⎞
⎟
⎠
(adjustable)
OUT2
V
) options. V
2
REF
(preset)
=
V
FB
) and 1.2V
= 1.5V
2
⎛
⎜
⎝
1
OUT2
+
R
R
OUT2
5
6
⎞
⎟
⎠
)