ISL88731
Typical Operating Performance
DCIN = 20V, 3S2P Li-Battery, T = +25°C, unless otherwise noted. (Continued)
A
UGATE
UGATE
LGATE
INDUCTOR
LGATE
CURRENT
PHASE
INDUCTOR
CURRENT
PHASE
FIGURE 10. SWITCHING WAVEFORMS IN CC MODE
FIGURE 9. SWITCHING WAVEFORMS AT DIODE EMULATION
CSON/
V BATTERY
CSON/
V BATTERY
BATTERY
CURRENT
BATTERY
CURRENT
FIGURE 11. BATTERY REMOVAL
FIGURE 12. BATTERY INSERTION
100
95
SYSTEM
LOAD
90
BATTERY
VOLTAGE
16.8V BATTERY
12.6V BATTERY
85
80
CHARGE
CURRENT
8.4V BATTERY
4.2V BATTERY
ADAPTER
CURRENT
75
70
0
2
4
6
8
CHARGE CURRENT (A)
FIGURE 14. EFFICIENCY vs CHARGE CURRENT AND
BATTERY VOLTAGE (EFFICIENCY DCIN = 20V)
FIGURE 13. LOAD TRANSIENT RESPONSE
FN9258.0
November 20, 2006
7
INTERSIL [ Intersil ]
