MAX17007EVKIT+ Maxim Integrated Products, MAX17007EVKIT+ Datasheet - Page 13

• 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

PIN
EP
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PGOOD2
NAME
PGND
CSH2
BST1
BST2
CSL2
GND
DH2
PAD
DL1
V
DL2
EN2
LX1
LX2
FB2
Core Controllers for Notebook Computers
DD
______________________________________________________________________________________
Inductor Connection for SMPS1. Connect LX1 to the switched side of the inductor. LX1 serves as the
lower supply rail for the DH1 high-side gate driver.
Bootstrap Capacitor Connection for SMPS1. The MAX17007/MAX17008 include an internal boost
switch/diode connected between V
Ground. Analog and power ground connection for the low-side gate driver of SMPS1.
Low-Side Gate Driver Output for SMPS1. DL1 swings from GND to V
sequence has completed. DL1 is also forced high when an output overvoltage fault is detected, overriding any
negative current-limit condition that may be present. DL1 is forced low in V
5V Driver Supply Input. Connect V
greater ceramic capacitor. V
Low-Side Gate-Driver Output for SMPS2. DL2 swings from PGND to V
shutdown sequence has completed. DL2 is also forced high when an output overvoltage fault is
detected, overriding any negative current-limit condition that may be present. DL2 is forced low in V
UVLO.
Power Ground for the Low-Side Gate Driver of SMPS2
Bootstrap Capacitor Connection for SMPS2. The MAX17007/MAX17008 include an internal boost switch/
diode connected between V
Inductor Connection for SMPS2. Connect LX2 to the switched side of the inductor. LX2 serves as the
lower supply rail for the DH2 high-side gate driver.
High-Side Gate-Driver Output for SMPS2. DH2 swings from LX2 to BST2. DH2 is low in shutdown.
Open-Drain Power-Good Output for SMPS2. PGOOD2 is low when the FB2 voltage is more than 100mV
below or 150mV above the target voltage, during soft-start, and in shutdown. After the SMPS2 soft-start
circuit has terminated, PGOOD2 becomes high impedance 200µs after the output is in regulation.
In combined mode, PGOOD2 is not used and can be left open.
SMPS2 Enable Input. Connect to V
slowly ramps down the output voltage to ground, and after the target voltage reaches 0.1V, the controller
forces DL2 low. When both EN1 and EN2 are low, the device enters the low-power shutdown state.
In combined mode, EN2 is not used and should be connected to GND.
Positive Current-Sense Input for SMPS2. Connect to the positive terminal of the current-sense element.
Figure 14 describes two different current-sensing options—using accurate sense resistors or lossless
inductor DCR sensing.
Output-Sense and Negative Current-Sense Input for SMPS2. When using the internal preset 1.5V
feedback divider (FB2 = REF), the controller uses CSL2 to sense the output voltage. Connect to the
negative terminal of the current-sense element. Figure 14 describes two different current-sensing
options—using accurate sense resistors or lossless inductor DCR sensing.
SMPS2 Feedback Input. Adjust the SMPS2 voltage with a resistive voltage-divider between SMPS2 output
and GND. Connect FB2 to REF for preset 1.5V output. Tie FB2 to V
MAX17007/MAX17008 for combined-mode operation.
Exposed Backside Pad. Connect to analog ground.
Dual and Combinable QPWM Graphics
DD
DD
is internally connected to the BST diodes and the low-side gate drivers.
and BST2. Connect to an external capacitor as shown in Figure 1.
DD
DD
CC
to V
and BST1. Connect to an external capacitor as shown in Figure 1.
for normal operation. Pull EN2 low to disable SMPS2. The controller
CC
through a 10 resistor. Bypass to ground through a 1µF or
FUNCTION
Pin Description (continued)
DD
CC
. DL1 is forced low after the shutdown
DD
CC
to configure the
. DL2 is forced low after the
UVLO.
CC
13