MIC4103YM Micrel Inc, MIC4103YM Datasheet - Page 17

• Manufacturer Part Number: MIC4103YM
• Description: IC MOSFET DRIVER 100V CMOS 8SOIC
• Manufacturer: Micrel Inc

Specifications of MIC4103YM

• Configuration: Half Bridge
• Input Type: Non-Inverting
• Delay Time: 24ns
• Current - Peak: 2A
• Number Of Configurations: 1
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 118V
• Voltage - Supply: 9 V ~ 16 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Device Type: MOSFET
• Module Configuration: Half Bridge
• Peak Output Current: 3A
• Output Resistance: 2.5ohm
• Input Delay: 24ns
• Output Delay: 24ns
• Supply Voltage Range: 9V To 16V
• Driver Case: RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1589

Micrel
November 2010
C
Figure 11. Synchronous Buck Converter Power Stage
VDD
HI
LI
MIC4103
Level
shift
Vdd
Vss
HB
Top Side
Figure 12. Typical Layout of a Synchronous Buck Converter Power Stage
HO
HS
C
LO
B
Vin
HS (switch) Node
Low-Side Fet
High-Side
Fet
Cin
17
A typical layout of a synchronous Buck converter power
stage (Figure 11) is shown in Figure 12.
The circuit is configured as a synchronous buck power
stage. The high-side MOSFET drain connects to the input
supply voltage and the source connects to the switching
node. The low-side MOSFET drain connects to the
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 LO is
routed over the ground plane which minimizes the
impedance of that current path. The decoupling capacitors,
C
the capacitors and their respective pins. This close
placement is necessary to efficiently charge capacitor C
when the HS node is low. All traces are 0.025” wide or
greater to reduce impedance. C
high current path through the MOSFETs.
B
and C
VDD
are placed to minimize trace length between
Bottom Side
IN
is used to decouple the
M9999-110910-B
MIC4103/4104
B