MAX15001 Maxim Integrated Products, MAX15001 Datasheet - Page 15

• Manufacturer Part Number: MAX15001
• Description: (MAX15000 / MAX15001) Current-Mode PWM Controllers
• Manufacturer: Maxim Integrated Products

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 cur-
rent often form high di/dt loops. Similarly, the heatsink
of the MOSFET presents a dv/dt source; therefore, mini-
mize the surface area of the heatsink as much as possi-
ble. Keep all PC board traces carrying switching
currents as short as possible to minimize current loops.
Figure 8. 12V to 15V Output Boost Regulator
______________________________________________________________________________________
0V
12V
C1
Layout Recommendations
C2
Programmable Switching Frequency
Current-Mode PWM Controllers with
C3
IN
V
COMP
UFLG
FB
CC
R12
MAX15001
RT
C6
UVLO/EN
R15
NDRV
GND
CS
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.
R3
R2
L1
Q1
R1
D1
C4
R5
R6
15V
15