LMZ31707_14 Datasheet, PDF (9/34 Pages) Texas Instruments – 7A SIMPLE SWITCHER® Power Module with 2.95V-17V Input and Current Sharing in QFN Package

LMZ31707
www.ti.com
SLVSBV7A – JUNE 2013 – REVISED AUGUST 2013
TYPICAL CHARACTERISTICS (PVIN = VIN = 5 V) ^{(1) (2)}
100
90
80
70
60
50
40
0
Vo = 3.3V, fsw = 750kHz
Vo = 2.5V, fsw = 750kHz
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 300kHz
Vo = 0.9V, fsw = 250kHz
Vo = 0.6V, fsw = 200kHz
1
2
3
4
5
6
7
Output Current (A)
C001
Figure 7. Efficiency vs. Output Current
30
Vo = 3.3V, fsw = 750kHz
Vo = 2.5V, fsw = 750kHz
25
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 300kHz
Vo = 0.9V, fsw = 250kHz
20
Vo = 0.6V, fsw = 200kHz
15
10
5
0
1
2
3
4
5
6
7
Output Current (A)
C004
Figure 8. Voltage Ripple vs. Output Current
3.0
Vo = 3.3V, fsw = 750kHz
Vo = 2.5V, fsw = 750kHz
2.5
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 300kHz
2.0
Vo = 0.9V, fsw = 250kHz
Vo = 0.6V, fsw = 200kHz
1.5
1.0
0.5
0.0
0
1
2
3
4
5
6
7
Output Current (A)
C004
Figure 9. Power Dissipation vs. Output Current
90
80
70
60
50
40
30
20
0
Airflow = 0 LFM
All Output Voltages
1
2
3
4
5
6
7
Output Current (A)
C001
Figure 10. Safe Operating Area
40
120
30
90
20
60
10
30
0
0
±10
-30
±20
-60
±30
Gain
Phase
±40
1000
10k
100k
-90
-120
Frequency (kHz)
C001
Figure 11. V_OUT= 1.8 V, I_OUT= 7 A, C_OUT= 200 µF ceramic, f_SW= 500 kHz
(1) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 7, Figure 8, and Figure 9.
(2) The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum
operating temperatures. Derating limits apply to devices soldered directly to a 100 mm × 100 mm, 4-layer PCB with 2 oz. copper.
Applies to Figure 10.
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