isl62881 Intersil Corporation, isl62881 Datasheet - Page 31

• Manufacturer Part Number: isl62881
• Description: Single-phase Pwm Regulator For Imvp-6.5? Mobile Cpus And Gpus
• Manufacturer: Intersil Corporation

Typical Performance
FIGURE 33. CPU MODE SHUT DOWN, V
FIGURE 35. CCM STEADY STATE, CPU MODE, V
FIGURE 37. GPU MODE REFERENCE DESIGN LOOP GAIN
I
I
Ch2: V
T2(s) MEASUREMENT RESULT
O
O
= 0A, VID = 1.2V, Ch1: PHASE, Ch2: V
= 1A, VID = 1.2375V, Ch1: PHASE,
O
Gain
Phase Margin
31
(Continued)
IN
ISL62881, ISL62881B
= 19V,
IN
= 8V,
O
FIGURE 34. GPU MODE SHUT DOWN, V
FIGURE 36. DCM STEADY STATE, CPU MODE,
1000
900
800
700
600
500
400
300
200
100
0
0
FIGURE 38. IMON, VID = 1.2375
2
I
V
PHASE1, Ch2: V
IMON
O
IN
= 0A, VID = 1.2V, Ch1: PHASE, Ch2: V
4
= 12V, I
6
TARGET
8
O
= 1A, VID = 1.075V, Ch1:
I
O
10
OUT
, Ch3: COMP, Ch4: LGATE
(A)
12
14
IN
16
= 19V,
October 26, 2009
18
20
FN6924.0
22
O