Richtek RT8239A, Руководство пользователя

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RT8239A/B/C
15
DS8239A/B/C-06 October 2012 www.richtek.com
© Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
OVP
Time (10ms/Div)
V
IN
= 12V, R
TON
= 100k
Ω
, ENLDO = VIN, No Load
V
OUT1
(2V/Div)
PGOOD
(5V/Div)
V
OUT2
(2V/Div)
UVP
Time (100
μ
s/Div)
V
IN
= 12V, R
TON
= 100k Ω , ENLDO = VIN
V
OUT1
(2V/Div)
LGATE1
(10V/Div)
UGATE1
(50V/Div)
PGOOD
(5V/Div)
V
OUT2
DEM-MODE Load Transient Response
Time (20 μ s/Div)
ENLDO = VIN, I
OUT2
=1A to 8A
V
OUT2_AC
(50mV/Div)
Inductor
Current
(5A/Div)
UGATE2
(20V/Div)
LGATE2
(5V/Div)
V
IN
= 12V, R
TON
= 100k
Ω
,
Power Off from ENTRIP2
Time (20ms/Div)
V
IN
= 12V, V
ENTRIP1
= V
ENTRIP2
= 1.5V,
ENLDO = VIN, R
TON
= 100k Ω , No Load
V
OUT2
(1V/Div)
PGOOD
(10V/Div)
ENTRIP2
(5V/Div)
RT8239B/C
V
OUT1
DEM-MODE Load Transient Response
Time (20 μ s/Div)
V
IN
= 12V, R
TON
= 100k
Ω
,
ENLDO = VIN, I
OUT1
=1A to 8A
V
OUT1_AC
(50mV/Div)
Inductor
Current
(5A/Div)
UGATE1
(20V/Div)
LGATE1
(5V/Div)
Power On from ENTRIP2
Time (1ms/Div)
V
IN
= 12V, V
ENTRIP1
= V
ENTRIP2
= 1.5V,
ENLDO = VIN, R
TON
= 100k
Ω
, No Load
V
OUT2
(1V/Div)
PGOOD
(5V/Div)
ENTRIP2
(5V/Div)
RT8239B/C