DS8813D Datasheet, PDF (6/23 Pages) Richtek Technology Corporation – Multi-Phase PWM Controller with PWM-VID Reference

RT8813D
Parameter
Switching Frequency
Minimum On-Time
Minimum Off-Time
Symbol
fSW
tON(MIN)
tOFF(MIN)
Test Conditions
RTON = 500k (Note 5)
EN Threshold
EN Input Voltage
Logic-High
Logic-Low
VENH
VENL
Mode Decision
PSI High Threshold
VPSIH
PSI Intermediate Threshold VPSIM
PSI Low Threshold
VPSIL
Logic-High
VID Input Voltage
VVIDH
Logic-Low VVIDL
Enables Full Phases with FCCM
Enables One Phases with FCCM
Enables One Phases with DEM
Protection Function
Zero Current Crossing
Threshold
Current Limit Setting Current
Current Limit Setting Current
Temperature Coefficient
IOCSET
IOCSET_TC
Current Limit Threshold
Absolute Over Voltage
Protection Threshold
ROCSET = 10k
VOVP, Absolute VREFIN  1.33V
Relative Over Voltage
Protection Threshold
VOVP, Relative VREFIN > 1.33V
OV Fault Delay
FB forced above OV threshold
Relative Under Voltage
Protection Threshold
VUVP
UVP
UV Fault Delay
FB forced above UV threshold
Thermal Shutdown Threshold
Minimum TM Threshold
VOUT Startup Delay
VOUT Startup Time
PGOOD Startup Delay
TSD
VTSEN
t_INIT
t_RAMP
t_SS
(No Shutting Down)
From EV to VOUT startup
VOUT ramp up (VREFIN = 1V)
From EN to PGOOD assertion
Error Amplifier
VSNS Error Comparator
Threshold (Valley)
VREFIN = 1V
Min Typ Max Unit
270 300 330 kHz
--
70
--
ns
-- 300 --
ns
1.2 --
--
V
--
--
0.6
V
1.4 --
--
V
0.8 --
1
V
--
--
0.4
V
1.2 --
--
V
--
--
0.6
V
8
--
8
mV
9
10 11
A
-- 6300 -- ppm/C
--
60
--
mV
1.9
2
2.1
V
145 150 155 %
--
5
--
s
35 40 45
%
--
3
--
s
-- 150 --
C
0.98 1 1.02 V
-- 250 --
s
-- 0.75 --
ms
--
--
2
ms
17.5 12.5 7.5 mV
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS8813D-00 September 2016