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

MAX17007A Evaluation Kit
The MAX17007A 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 MAX17007A regulates OUT1 to the voltage set at
REFIN1. By changing the voltage at REFIN1 between
two set voltages, the MAX17007A 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
logic-low on the gate turns off N7, resulting in V
1.2V. Jumper JU2 is used to control the gate of the
external MOSFET (N7). To configure different dynamic
output voltages, see the Evaluating Other Dynamic
Voltages section.
Table 4. Jumper JU1 and JU2 Functions
* Default position.
X = Don’t-care condition.
4
installed
SHUNT POSITION
JU1
2-3*
Not
1-2
_______________________________________________________________________________________
Instal l ed *
installed
JU2
Not
X
X
dividers R7 and R9
Connected to VDD
Connected to REF
Connected to REF
external voltage (0
to 2V) through the
REFIN1 test point
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
V
(preset)
V
(dynamic)
V
(dynamic)
V
(adjustable)
OUT1 VOLTAGE
OUT1
OUT1
OUT1
OUT1
OUT1
= 1.05V
= 1.2V
= 1V
= V
= 1V. A
REFIN1
OUT1
OUT1
=
)
The MAX17007A 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 MAX17007A 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)
= 0.7V.
V
= 2V.
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
+
||
V
(preset)
V
(adjustable)
C om b i ned m od e sel ected
( see the C om b i ned - M od e
O p er ati on secti on for
necessar y b oar d
m od i fi cati ons and op er ati on)
OUT1(LOW)
9
9
2
R
R
OUT
)
OUT2
by selecting appropri-
9
9
+
−
OUT2
)
⎞
⎟
⎠
R
1
OUT2 VOLTAGE
2
⎞
⎟
⎠
V
7
REF
= 1.5V
=
⎞
⎟
⎠
V
) options. V
V
REF
FB
2
) and 1.2V
⎛
⎜
⎝
1
+
R
R
OUT2
5
6
⎞
⎟
⎠
OUT2
)