
High-Speed, Dual-Phase Driver
with Integrated Boost Diodes
GATE-DRIVE SUPPLY
V IN = 12V
4.5V TO 7V
VL1
DH1
C1
DLY
BST1
Q1
R1
C3
VL2
LX1
C4
L1
C6
C7
C8
V OUT
C9
DL1
PGND1
MAX8811
Q2
C2
OFF
ON
EN
BST2
DH2
Q3
C5
L2
PWM1
LX2
PWM2
PWM CONTROL
SIGNALS
Figure 3. 800kHz, 20A/Phase Typical Application Circuit
GATE-DRIVE SUPPLY
DL2
PGND2
Q4
V IN = 12V
4.5V TO 7V
VL1
DH1
C1
DLY
BST1
Q1
VL2
LX1
C4
L1
V OUT
C3
DL1
Q2
C6
C7
C8
PGND1
MAX8811
C2
OFF
ON
EN
BST2
DH2
Q3
C5
L2
PWM1
LX2
PWM2
PWM CONTROL
SIGNALS
Figure 4. 300kHz, 30A/Phase Typical Application Circuit
DL2
PGND2
Q4
10
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