ir3621 International Rectifier Corp., ir3621 Datasheet - Page 27

• Manufacturer Part Number: ir3621
• Description: 2-phase / Dual Synchronous Pwm Controller With Oscillator Synchronization And Pre-bias Startup
• Manufacturer: International Rectifier Corp.

TYPICAL PERFORMANCE CURVES
Test Conditions:
V
Unless otherwise specified.
IN
=12V, V
OUT1
90
85
80
75
70
65
60
55
50
45
Figure 40 - Efficiency for 2.5V and 1.8V outputs at room temperature and no air flow.
=2.5V, I
0
Efficiency was measured when the other output was operating at no load.
OUT1
2
=0-10A, V
4
OUT2
=1.8V, I
12V to 2.5V and 1.8V
6
OUT2
Io(A)
www.irf.com
8
=0-10A, Fs=400kHz, Ta=Room Temp, No Air Flow
10
12
14
IR3621 & (PbF)
16
2.5V
1.8V
27