Datasheet

Figure 8 shows the 12V to 15V output boost regulator.
Layout Recommendations
Typically, there are two sources of noise emission in a
switching power supply: high di/dt loops and high
dV/dt surfaces. For example, traces that carry the drain
current often form high di/dt loops. Similarly, the
heatsink of the MOSFET presents a dV/dt source; there-
fore, minimize the surface area of the heatsink as much
as possible. Keep all PCB traces carrying switching
currents as short as possible to minimize current loops.
Use a ground plane for best results. The pins of the
μMAX package are positioned to allow easy interfacing
to the external MOSFET.
For universal AC input design, follow all applicable
safety regulations. Offline power supplies may require
UL, VDE, and other similar agency approvals. To avoid
noise coupling of signals from RT to NDRV, route traces
from RT away from NDRV.
MAX17499/MAX17500
Current-Mode PWM Controllers with
Programmable Switching Frequency
______________________________________________________________________________________ 15
V
CC
COMP
FB
GND
CS
NDRV
UVLO/EN
0V
12V
R2
R3
R1
C1
RT
UFLG
C6
R15
R12
C4
IN
MAX17499
C2
C3
R5
R6
15V
D1
Q1
L1
Figure 8. 12V to 15V Output Boost Regulator