RT8223P
Power On from ENTRIP1
Power Off from ENTRIP1
No Load
No Load
VOUT1
(2V/Div)
VOUT1
(2V/Div)
PGOOD
(5V/Div)
PGOOD
(5V/Div)
VIN = 12V, TONSEL = GND,
VIN = 12V, TONSEL = GND,
SKIPSEL= REF, EN= FLOATING,
VENTRIP1 = VENTRIP2 = 1.5V
ENTRIP1
(5V/Div)
ENTRIP1
(5V/Div)
SKIPSEL= REF, EN= FLOATING,
VENTRIP1 = VENTRIP2 = 1.5V
Time (1ms/Div)
Time (2ms/Div)
Power On from ENTRIP2
Power Off from ENTRIP2
No Load
No Load
VOUT2
(2V/Div)
VOUT2
(2V/Div)
PGOOD
(5V/Div)
PGOOD
(5V/Div)
VIN = 12V, TONSEL = GND,
VIN = 12V, TONSEL = GND,
SKIPSEL= REF, EN= FLOATING,
VENTRIP1 = VENTRIP2 = 1.5V
ENTRIP2
(5V/Div)
ENTRIP2
(5V/Div)
SKIPSEL= REF, EN= FLOATING,
VENTRIP1 = VENTRIP2 = 1.5V
Time (1ms/Div)
Time (2ms/Div)
VOUT1 PWM Mode Load Transient Response
VOUT2 PWM Mode Load Transient Response
VOUT1_AC
(50mV/Div)
VOUT2_AC
(50mV/Div)
Inductor
Current
(5A/Div)
Inductor
Current
(5A/Div)
UGATE1
(20V/Div)
UGATE2
(20V/Div)
VIN = 12V, TONSEL = GND,
VIN = 12V, TONSEL = GND,
LGATE1
(5V/Div)
LGATE2
(5V/Div)
EN= FLOATING, SKIPSEL= REF, IOUT1 = 0Ato 6A
EN= FLOATING, SKIPSEL = REF, IOUT2 = 0Ato 6A
Time (20μs/Div)
Time (20μs/Div)
www.richtek.com
14
DS8223P-01 June 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
