Datasheet

MAX8552
High-Speed, Wide-Input,
Single-Phase MOSFET Driver
8 _______________________________________________________________________________________
V
CC
GND
DLY
PWM
BST
DH
LX
DL
PGND
MAX8552
EN
V
IN
6V TO 24V
V
OUT
1.45V AT 25A
V
CC
4.5V TO 6.5V
PWM CONTROL
SIGNAL
C5
4.7µF
C4
0.47µF
R1
1
4
7
5
6
10
9
8
2
3
C6
0.47µF
N1
N3
N2
N4
L1
D1
C1
10µF
C2
10µF
C3
10µF
C7–C10
390µF
ON
OFF
DESIGNATION DESCRIPTION PART
C1, C2, C3 10µF, 25V ceramic capacitor Taiyo Yuden TMK432BJ106MM
C4 4.7µF, 10V ceramic capacitor Taiyo Yuden LMK316 BJ475ML
C5, C6 0.47µF, 10V ceramic capacitor Taiyo Yuden LMK107BJ474KA
C7–C10 390µF/2V SP capacitor Panasonic EEFUE0D391XR
D1 30V, 200mA, V
F
= 0.5V Schottky diode Fairchild BAT54S
L1 0.66µH/29A, 0.9mΩ typical R
DC
resistance Panasonic PCC-NX3
N1, N2 30V, 14A N-MOSFET International Rectifier IRF7821
N3, N4 30V, 18A N-MOSFET International Rectifier IRF7832
R1 6kΩ - 125kΩ = 1%, 1/8W resistor Panasonic
Figure 1. Typical Application Circuit
Table 1. Typical Component Values (500kHz Operation, 25A/Phase Output Current)