MAX15034BEVKIT+ Maxim Integrated Products, MAX15034BEVKIT+ Datasheet - Page 15

• Manufacturer Part Number: MAX15034BEVKIT+
• Description: KIT EVALUATION FOR MAX15034
• Manufacturer: Maxim Integrated Products

Specifications of MAX15034BEVKIT+

• Main Purpose: DC/DC, Step Down
• Voltage - Input: 5 ~ 28V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: MAX15034
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The high-side drivers (DH1 and DH2) and low-side dri-
vers (DL1 and DL2) drive the gates of external n-channel
MOSFETs. The high-peak sink and source current capa-
bility of these drivers provides ample drive for the fast
rise and fall times of the switching MOSFETs. Faster rise
and fall times result in reduced switching losses. For low-
output, voltage-regulating applications where the duty
Figure 3. Current Comparator and MOSFET Driver Logic
Figure 4. Voltage Error Amplifier
Configurable, Single-/Dual-Output, Synchronous
C
OUT
Buck Controller for High-Current Applications
V
OUT
RAMP
CSN_
CSP_
CLP_
GM
CLK
EN_
IN
LOAD
MOSFET Gate Drivers (DH_, DL_)
2 x f
______________________________________________________________________________________
SW
(V/S)
R
R
A
1
2
V
= 36V/V
1.225V
EAN_
V
REF
= 0.61V
g
m
R
= 500μS
F
COMPARATOR
PWM
EAOUT_
cycle is less than 50%, choose high-side MOSFETs (Q2
and Q4, Figure 6) with a moderate R
low gate charge. Choose low-side MOSFETs (Q1 and
Q3, Figure 6) with very low R
charge. The driver block also includes a logic circuit that
provides an adaptive nonoverlap time (30ns typ) to pre-
vent shoot-through currents during transition. Figure 7
shows the dual-phase, single-output buck regulator.
Figure 5. Defining the Voltage-Positioning Window
V
V
CNTR
CNTR
+ ΔV
- ΔV
V
OUT
OUT
S
R
CNTR
NO LOAD
/2
/2
Q
Q
1/2 LOAD
LOAD (A)
DS(ON)
V
DD
and moderate gate
DS(ON)
BST_
DH_
LX_
DL_
PGND
and a very
FULL LOAD
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