Datasheet

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S0183-01
GND
R
mod
REST
A
IN
V
driver
Cboot2
Cboot1
L1 L2
V
OUT
PGND
RESET
SCR1
SCR0
TPIC74100B
ENABLE
V
logic
A
OUT
5V
Vbattery
5V
5Vg_ENABLE
5
Vg
5V
CLP
4.7nF4.7nF
L
C
R2
R1
470nF
2.2nF–150nF
Optional
Connection
5kW
5kW
1 µF–100µF
22µF–470µF
12 kW
22µH–100µH
Layout Guidelines for Switch-Mode Power Supply
Inductor
Filter Capacitors
Traces and Ground Plane
TPIC74100-Q1
BUCK/BOOST SWITCH-MODE REGULATOR
SLIS125 – DECEMBER 2006
A. To minimize voltage ripple on the output due to transients, it is recommended to use a low-ESR capacitor on the
V
OUT
line.
B. The L and C component values are system application dependent for EMI consideration.
Figure 24. Application Schematic
The following guidelines are recommended for PCB layout of the TPIC74100-Q1 device.
Use a low-EMI inductor with a ferrite-type closed core. Other types of inductors may be used; however, they
must have low-EMI characteristics and be located away from the low-power traces and components in the
circuit.
Input ceramic filter capacitors should be located in the close proximity of the V
driver
terminal. Surface-mount
capacitors are recommended to minimize lead length and reduce noise coupling.
All power (high-current) traces should be thick and as short as possible. The inductor and output capacitors
should be as close to each other as possible. This reduces EMI radiated by the power traces due to high
switching currents.
24
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