ISL6256 Datasheet, PDF (11/26 Pages) Intersil Corporation – Highly Integrated Battery Charger with Automatic Power Source Selector for Notebook Computers

ISL6256, ISL6256A
Typical Operating Performance DCIN = 20V, 4S2P Li-Battery, T_A = +25°C, Unless Otherwise Noted. (Continued)
CSON
5V/div
EN
5V/div
INDUCTOR
CURRENT
2A/div
CHARGE
CURRENT
2A/div
BBAATTETREYRY
ININSSERETRIOTNION
V^VC^CO^OM^MP^P
I_IC_CO_OM_MP_P
BBAATTTTEERRYY
RREEMMOOVVAAL L
INDUCTOR
CURRENT
2A/div
CSON
10V/div
VCOMP
2V/div
ICOMP
2V/div
FIGURE 10. CHARGE ENABLE AND SHUTDOWN
FIGURE 11. BATTERY INSERTION AND REMOVAL
CHLIM==0.02.V2V
CSON==8V8V
PHASE
10V/div
INDUCTOR
CURRENT
1A/div
UGATE
5V/div
FIGURE 12. SWITCHING WAVEFORMS AT DIODE EMULATION
PHASE
10V/div
UGATE
2V/div
LGATE
2V/div
FIGURE 13. SWITCHING WAVEFORMS IN CC MODE
AADDAAPPTTEERRRREEMMOOVVAALL
SGATE-CSIP
2V/div
SYSTEM BUS
VOLTAGE
10V/div
BGATE-CSIP
2V/div
INDUCTOR
CURRENT
2A/div
FIGURE 14. AC ADAPTER REMOVAL
BGATE-CSIP
2V/div
SYSTEM BUS
VOLTAGE
10V/div
ADAADPATPERTEINRSINESRETRIOTNION
SGATE-CSIP
2V/div
INDUCTOR
CURRENT
2A/div
FIGURE 15. AC ADAPTER INSERTION
11
FN6499.3
September 14, 2010