MIC4102 Datasheet, PDF (11/28 Pages) Micrel Semiconductor – 100V Half Bridge MOSFET Driver with Anti-Shoot Through Protection

3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
Package Type
MIC4102
SOIC-8L (M)
(Top View)
VDD 1
HB 2
HO 3
HS 4
8 LO
7 VSS
6 LS
5 PWM
MIC4102
TABLE 3-1: PIN FUNCTION TABLE
Pin Number Pin Name
Description
1
V_DD Positive supply to lower gate drivers. Decouple this pin to V_SS (Pin 7). Bootstrap diode
connected to HB (Pin 2).
2
HB High-Side Bootstrap supply. External bootstrap capacitor is required. Connect positive
side of bootstrap capacitor to this pin. Bootstrap diode is on-chip.
3
HO High-Side Output. Connect to gate of high-side power MOSFET.
4
HS High-Side Source connection. Connect to source of high-side power MOSFET.
Connect negative side of bootstrap capacitor to this pin.
5
PWM Control Input. PWM high signal makes high-side HO output high and low-side LO
output low. PWM low signal makes high-side HO output low and low-side LO output
high.
6
LS
Low-Side Disable. When pulled low, this control signal immediately terminates the
low-side LO output drive. The low-side LO output drive will remain low until this signal
is removed. HS drive is not affected by the LS signal. The logic table is below (see
Table 3-2).
7
V_SS Chip negative supply. Generally, this will be grounded.
8
LO
Low-Side Output. Connect to gate of low-side power MOSFET.
TABLE 3-2: LS PIN LOGIC TABLE
LS
PWM
LO
HO
0
0
0
0
0
1
0
1
1
0
1
0
1
1
0
1
 2016 Microchip Technology Inc.
DS20005575A-page 11