mic4102 Micrel Semiconductor, mic4102 Datasheet - Page 16

• Manufacturer Part Number: mic4102
• Description: 100v Half Bridge Mosfet Driver With Anti-shoot Through Protection
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
November 2006
1. The circuit is configured as a synchronous buck
power stage.
connects to the input supply voltage (drain) and
the source connects to the switching node. The
low-side
switching node and its source is connected to
ground. The buck converter output inductor (not
shown) would connect to the switching node.
The high-side drive trace, HO, is routed on top
of its return trace, HS, to minimize loop area and
parasitic inductance. The low-side drive trace,
Figure 11. Typical Converter Power Stage
Figure 12. Typical Layout of a Synchronous Buck Converter Power Stage
MOSFET
The high-side MOSFET drain
drain
connects
to
the
F
16
LO is routed over the ground plane which
minimizes the impedance of that current path.
The decoupling capacitors, C
placed to minimize etch length between the
capacitors and their respective pins. This close
placement is necessary to efficiently charge
capacitor C
traces are 0.025” wide or greater to reduce
impedance. Cin is used to decouple the high
current
path
B
when the HS node is low.
through
the
B
M9999-112806
and C
MOSFETs.
MIC4102
VDD
are
All