High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
_____________________________Typical Operating Characteristics (continued)
(7A CPU supply circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
MAX1710/MAX1711/MAX1712
LOAD-TRANSIENT RESPONSE
(WITH INTEGRATOR)
MAX1710-16
LOAD-TRANSIENT RESPONSE
(WITH INTEGRATOR)
MAX1710-17
LOAD-TRANSIENT RESPONSE
(WITHOUT INTEGRATOR)
MAX1710-18
A
A
A
B
B
10µs/div
V
IN
= 15V, V
O
= 1.6V, I
O
= 0A TO 7A
A = V
OUT
, AC-COUPLED, 50mV/div
B = INDUCTOR CURRENT, 5A/div
B
10µs/div
V
IN
= 15V, V
O
= 1.6V, I
O
= 30mA TO 7A
A = V
OUT
, AC-COUPLED, 50mV/div
B = INDUCTOR CURRENT, 5A/div
10µs/div
V
IN
= 15V, V
O
= 1.6V, I
O
= 30mA TO 7A
A = V
OUT
, AC-COUPLED, 50mV/div
B = INDUCTOR CURRENT, 5A/div
LOAD-TRANSIENT RESPONSE
(WITH INTEGRATOR)
MAX1710-19
LOAD-TRANSIENT RESPONSE
(WITH INTEGRATOR)
MAX1710-20
STARTUP WAVEFORM
MAX1710-21
A
A
A
B
B
C
20µs/div
V
IN
= 4.5V, V
O
= 2V, I
O
= 30mA TO 7A
A = V
OUT
, AC-COUPLED, 50mV/div
B = INDUCTOR CURRENT, 5A/div
C = DL, 10V/div
B
C
20µs/div
V
IN
= 4.5V, V
O
= 1.3V, I
O
= 30mA TO 7A
A = V
OUT
, AC-COUPLED, 50mV/div
B = INDUCTOR CURRENT, 5A/div
C = DL, 10V/div
C
500µs/div
A = SHDN
B = V
OUT
, 0.5V/div
C = INDUCTOR CURRENT, 5A/div
_______________________________________________________________________________________
7
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
