ISL62881_14 Datasheet, PDF (30/35 Pages) Intersil Corporation – Single-Phase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs

ISL62881, ISL62881B
Typical Performance
90
88
86
84
82
V_IN = 12V
80
V_IN = 8V
78
V_IN = 19V
76
74
72
700 _{2 4 6 8 10 12 14 16 18 20 22}
I_OUT (A)
FIGURE 27. CPU APPLICATION CCM EFFICIENCY, VID = 0.9V,
V_IN1 = 8V, V_IN2 = 12.6V AND V_IN3 = 19V
88
86
84
82
80
78
V_IN = 12V
V_IN = 19V
76
V_IN = 8V
74
72
70
0.1
1.0
I_OUT (A)
10.0
FIGURE 28. CPU APPLICATION DCM EFFICIENCY, VID = 0.9V,
V_IN1 = 8V, V_IN2 = 12.6V AND V_IN3 = 19V
0.91
0.90
0.89
0.88
0.87
0.86
0.85
0.84
0.83
0.82
0.81
0.80
0
V_IN = 19V
246
V_IN = 12V
V_IN = 8V
8 10 12 14 16 18 20 22
I_OUT (A)
FIGURE 29. CPU APPLICATION CCM LOAD LINE, VID = 0.9V,
V_IN1 = 8V, V_IN2 = 12.6V AND V_IN3 = 19V
FIGURE 30. CPU MODE CLK_EN# DELAY, V_IN = 19V, I_O = 0A,
VID = 1.2V, Ch1: PHASE1, Ch2: V_O, Ch4: CLK_EN#
FIGURE 31. CPU MODE SOFT-START, V_IN = 19V, I_O = 0A,
VID = 1.2V, Ch1: PHASE, Ch2: V_O
30
FIGURE 32. GPU MODE SOFT-START, V_IN = 19V, I_O = 0A,
VID = 1.2V, Ch1: PHASE, Ch2: V_O
FN6924.3
June 16, 2011