iru3138 International Rectifier Corp., iru3138 Datasheet - Page 13

• Manufacturer Part Number: iru3138
• Description: Synchronous Pwm Controller For Termination Power Supply Applications -
• Manufacturer: International Rectifier Corp.

TYPICAL APPLICATION
Single Supply 5V Input
Rev. 1.0
01/29/04
0.1uF
68pF
C8
C6
0.1uF
0.1uF
3.3nF
C3
C8
C9
18K
R4
Figure 11 - Typical application of IRU3138 in an on-board DC-DC converter
V
V
Rt
SS/SD
Comp
REF
P
Vcc
IRU3138
Gnd
U1
Vc
PGnd
HDrv
LDrv
D2
BAT54
Fb
1uF
C4
using a single 5V supply.
D3
BAT54
www.irf.com
R5
1K, 1%
0.1uF
C5
3.16K, 1%
D1
BAT54S
R6
Q1
IRF7457
Q2
IRF7457
C2
3x 6TPB150M,
150uF, 40m
3.3uH
1uH
L2
L1
V
IRU3138
C1
47uF
C7
2x 6TPC330M,
330uF, 40m
5V
3.3V
@ 12A
V
13