iru3038 International Rectifier Corp., iru3038 Datasheet - Page 12

• Manufacturer Part Number: iru3038
• Description: Synchronous Pwm Controller For Termination Power Supply Applications
• Manufacturer: International Rectifier Corp.

IRU3038
TYPICAL APPLICATION
Single Supply 5V Input
12
1800pF
0.1uF
26.1K
C8
C9
R4
0.1uF
C3
V
V
Rt
SS
Comp
REF
P
Vcc
Figure 11 - Typical application of IRU3038 in an on-board DC-DC converter
IRU3038
Gnd
U1
Vc
450
400
350
300
250
200
150
PGnd
HDrv
LDrv
1uF
Fb
C4
0
Figure 12 - Switching frequency vs. Rt.
0.1uF
50
D1
BAT54S
using a single 5V supply.
C5
R5
1K, 1%
www.irf.com
Rt (K 8 8 )
100
Q1
IRF7460
Q2
IRF7460
1K, 1%
R6
150
D05022P-103, 3.3uH, 10A
C2
2x 10TPB100ML,
100uF, 55m
200
L2
V
1uH
L1
250
C1
33uF
Tantalum
C7
2x 6TPC150M,
150uF, 40m
5V
2.5V
@ 8A
09/12/02
Rev. 2.0
V