RT8172A Datasheet, PDF (16/40 Pages) Richtek Technology Corporation – Dual Single-Phase PWM Controller

RT8172A
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Shutdown Current
(PVCC + V_CC)
Shutdown Current
(TONSETx)
I_{VCC_SHDN}
+ I_{PVCC_SHDN}
V_EN = 0V
I_{TONSETx_SHDN} V_EN = 0V
--
--
5
A
--
--
5
A
TON Setting
TONSETx Voltage
On-Time
TONSETx Input Current
Range
V_TONSETx
t_ON
I_RTON
I_RTON = 80A, V_FBx = 1V
I_RTON = 80A, V_FBx = 1V
V_FBx = 1.1V
0.95 1.075 1.2
V
315 350 385 ns
25
-- 280 A
Minimum Off-Time
T_{OFF_MIN}
GFX VR Forced DEM
GFXPS2x Enable
Threshold
GFXPS2x Disable
Threshold
V_GFXPS
V_GFXPS
References and System Output Voltage
-- 350 --
ns
4.3
--
--
V
--
--
0.7
V
DAC Accuracy
(PS0/PS1)
V_FBx
SETINIx Voltage
V_SETINIx
IBIAS Pin Voltage
V_IBIAS
Dynamic VID Slew Rate SR_DVID
VID_SVID Setting = 1.000V to 1.520V
OFS_SVID Setting = 0V
0.5
0
0.5 %VID
VID_SVID Setting = 0.800V to 1.000V
OFS_SVID Setting = 0V
5
0
5
VID_SVID Setting = 0.500V to 0.800V
OFS_SVID Setting = 0V
8
0
VID_SVID Setting = 0.250V to 0.500V
OFS_SVID Setting = 0V
8
0
8
mV
8
VID_SVID Setting = 1.100V
OFS_SVID Setting = 0.640V to 0.635V
10
0
10
V_{INI_CORE} = 0V, V_{INI_GFX} = 0V
0 0.3125 0.5125
V_{INI_CORE} = 0.9V, V_{INI_GFX} = 0.9V
V_{INI_CORE} = 1V, V_{INI_GFX} = 1V
0.7375 0.9375 1.1375
V
1.3625 1.5625 1.7625
V_{INI_CORE} = 1.1V, V_{INI_GFX} = 1.1V 2.6125 --
5
R_IBIAS = 53.6k
2.09 2.14 2.19 V
SetVID Slow
SetVID Fast
2.5 3.125 3.75
mV/s
10 12.5 15
Error Amplifier
DC Gain
A_DC
Gain-Bandwidth Product GBW
Slew Rate
SR_COMP
Output Voltage Range
MAX Source/Sink
Current
V_COMP
I_COMP
R_L = 47k (Note5)
C_LOAD = 5pF (Note5)
C_LOAD = 10pF
(Gain = 4, R_{LOAD_COMP} = 47k,
V_COMPx = 0.5V to 3V)
R_L = 47k
V_COMP = 2V
70 80
--
10
--
dB
-- MHz
--
5
-- V/s
0.5
--
3.6
V
-- 250 --
A
Impedance of FBx
R_FBx
1
--
-- M
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
16
is a registered trademark of Richtek Technology Corporation.
DS8172A-00 November 2013