rt9218b Richtek Technology Corporation, rt9218b Datasheet - Page 8

• Manufacturer Part Number: rt9218b
• Description: Synchronous Buck Dc-dc Linear Power Controller
• Manufacturer: Richtek Technology Corporation

RT9218B
www.richtek.com
8
(100mV/Div)
(10V/Div)
(10A/Div)
UGATE
SV
UGATE
I
SV
L
OUT
I
OUT
OUT
f = 1/20ms, SR = 2.5A/us
V
I
V
V
I
OUT
OUT
CC
CC
IN
= 25A
= 0A to 15A
= 5V
Transient Response (Rising)
= V
= 12V
IN
= 12V
Dead Time (Rising)
Time (500us/Div)
Time (25ns/Div)
Time (5us/Div)
Power On
(500mV/Div)
(2A/Div)
(10V/Div)
L = 2.2uH
C = 2000uF
UGATE
PHASE
LGATE
(100mV/Div)
(10V/Div)
SV
(10A/Div)
UGATE
OUT
I
L
V
V
I
V
I
f = 1/20ms
SR = 2.5A/us
OUT
OUT
CC
CC
IN
UGATE
PHASE
= 5V
= 25A
= 15A to 0A
= V
= 12V
Transient Response (Falling)
IN
= 12V
Dead Time (Falling)
LGATE
Time (10ns/Div)
V
Time (5ms/Div)
Time (25us/Div)
Power Off
CC
DS9218B-09 March 2007
L = 2.2uH
C = 2000uF
SV
UGATE
OUT
V
IN