MIC4100BM Micrel Inc, MIC4100BM Datasheet - Page 16

• Manufacturer Part Number: MIC4100BM
• Description: IC,Dual MOSFET Driver,SOP,8PIN,PLASTIC
• Manufacturer: Micrel Inc

Specifications of MIC4100BM

• Configuration: Half Bridge
• Input Type: Non-Inverting
• Delay Time: 27ns
• 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)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The following circuit guidelines should be adhered to for
optimum circuit performance:
A typical layout of a synchronous Buck converter power
stage (Figure 11) is shown in Figure 12.
Micrel, Inc.
March 2006
High-side drive turn-on
1. The Vcc and HB bypass capacitors must be
2. A ground plane should be used to minimize
3. Trace out the high di/dt and dv/dt paths, as shown
current path
placed close to the supply and ground pins. It is
critical that the etch length between the high side
decoupling capacitor (C
be minimized to reduce lead inductance.
parasitic inductance and impedance of the return
paths. The MIC4100 is capable of greater than 2A
peak currents and any impedance between the
MIC4100, the decoupling capacitors and the
external MOSFET will degrade the performance of
the driver.
in Figures 9 and 10 and minimize etch length and
loop area for these connections. Minimizing these
parameters decreases the parasitic inductance
and the radiated EMI generated by fast rise and
fall times.
C
Vdd
C
B
Turn-Off Current Paths
HO
Figure 10
Vdd
HB
HS
B
) and the HB & HS pins
Level
shift
Low-side drive turn-off
Vss
LO
LO
current path
LI
HI
16
C
VDD
HI
LI
MIC4100
Level
shift
Vdd
Vss
Figure 11
HB
HO
HS
C
LO
B
Vin
HS (switch) Node
High-Side Fet
Low-Side Fet
M9999-031506
MIC4100/1
Cin