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PDF RT8167A Data sheet ( Hoja de datos )
| Número de pieza | RT8167A | |
| Descripción | Dual Single-Phase PWM Controller | |
| Fabricantes | Richtek | |
| Logotipo |  |
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®
RT8167A
Dual Single-Phase PWM Controller for CPU Core/GFX
Power Supply
General Description
The RT8167A is a dual single-phase synchronous Buck
PWM controller with integrated gate drivers, compliant
with Intel VR12/IMVP7 specification. A serial VID (SVID)
interface is built-in in the RT8167A to communicate with
Intel VR12/IMVP7 compliant CPU. The integrated
differential remote output voltage sensing function and
built-in high accuracy DAC achieve accurate output voltage
regulation.
The RT8167A supports VR12/ IMVP7 compatible power
management states and VID on-the-fly function. The
RT8167A operates in two power management states
including DEM in PS2 and Forced-CCM in PS1/PS0.
Richtek's proprietary G-NAVPTM (Green Native AVP) makes
AVP (Active Voltage Positioning) design easier and more
robust. By utilizing the G-NAVPTM topology, DEM and CCM
efficiency can be improved.
The RT8167A integrates high accuracy ADC for platform
setting functions, such as no-load offset or over current
level. Individual VR ready output signals are provided for
both CORE VR and GFX VR. The IC also features complete
fault protection functions, including over voltage, under
voltage, negative voltage, over current and under voltage
lockout. The RT8167A is available in a WQFN-48L 6x6
small foot print package.
Marking Information
RT8167AGQW : Product Number
RT8167A
GQW
YMDNN
YMDNN : Date Code
Features
z G-NAVPTM (Green Native Active Voltage Positioning)
Topology
z Dual Output Controller with Two Built-in Gate
Drivers
z Serial VID Interface
z 0.5% DAC Accuracy
z Differential Remote Output Voltage Sensing
z Built-in ADC for Platform Programming
z Diode Emulation Mode (DEM) at Light Load
Condition
z Droop Enable/Disable
z Fast Transient Response
z VR12/IMVP7 Compatible Power Management
States
z VR Ready Indicator
z Thermal Throttling Indicator
z Current Monitor Output
z Switching Frequency up to 1MHz per Phase
z Protection : OVP, UVP, NVP, OCP, UVLO
z Small 48-Lead WQFN Package
z RoHS Compliant and Halogen Free
Applications
z VR12 / IMVP7 Intel CPU Core Supply
z AVP Step-down Converter
z Notebook/ Netbook/ Desktop Computer CPU Core
Supply
Ordering Information
RT8167A
Package Type
QW : WQFN-48L 6x6 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8167A-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT8167A
Typical Application Circuit
5V
VCCP
VCLK
VDIO
ALERT
VRA_READY
VR_READY
VRHOT
VCC
DRPENA
DRPEN
OCSETA
OCSET
SETINIA
SETINI
VCC
TMPMAX
ICCMAX
ICCMAXA
OFSA
OFS
GFXPS2
VCC
R1 VCC
2.2
C1
1µF
12 VCC
RT8167A
TONSET 48
BOOT 47
UGATE 46
R2
130k
R4
0
R3
5.1
C2
0.1µF
Q1
VIN
5V to 25V
C4
10µF
R6 R7 R8 R9 R10 R11
130 130 150 10k 10k 75
PHASE 45
R5
0
C3
0.1µF
Optional
R12 Q2
29 VCLK
28 VDIO
27 ALERT
25
24
VRA_READY
VR_READY
23 VRHOT
LGATE 44
PVCC 43
ISEN1P 1
0
5V
C8
1µF
R13
C7
R14 3.9k
R16
C5 2.4k
Optional
0.068µF
R15
L1
1µH
DCR 7.6m
RNTC1
4.7k
C25 ISEN1N 2
4.7k
VCORE
C26
330µF
/9m
C6
330µF
/9m
R17 R18 R19 R20 R21 R22
10k 10k 27k 8.7k 10k 10k
26 DRPENA
8 DRPEN
21 OCSETA
19 OCSET
13
14
SETINIA
SETINI
R28 R29 R30 R31 R32 R33
NC NC 10k 10k NC NC
IMONFB 7
4
FB
3
COMP
RGND 5
6
IMON
C9
Optional R23
10k
Optional Optional
C11 C12
R24
0
C10
Optional
R25 R26 R27
71k 10k 100
IMON
C13 R35
0.1µF 620k
R34
100
CORE VCC_ SENSE
VCORE
CORE VSS_SENSE
R37 R38 R39 R40 R41 R42
51k 150k 100k NC NC NC
R47 R48 R49 R50 R51 R52
33k 5.1k 1.6k 0 0 10k
TONSETA
37 R43
15 TMPMAX
16
17
ICCMAX
ICCMAXA
10
9
11
OFSA
OFS
GFXPS2
BOTTA 39
UGATEA 40
PHASEA 41
LGATEA 42
R45
0
R46
0
R53
0
ISENAP 36
R36
39k
R44
C14
0.1µF
VIN
5V to 25
Q3
C15
0.1µF
Q4
C16
10µF
Optional
R54
C17
R55 11k
L2
2µH
DCR 14.6m
RNTCA
1k
VGFX
C27
330µF
/15m
C19
330µF
/15m
R58
12k
RNTC
10k
T1
R59
12k
ß = 3380
R72
R71 750
750
RNTCTA
10k
ß = 3380
20 TSENA
18 TSEN
22 IBIAS
ISENAN 35
IMONFBA 30
FBA 33
C18
0.1µF
C20
Optional
R57
1.2k
R56
1k
R60
10k
Optional Optional
C22 C23
R61
0
C21
Optional
R62 R63 R64
1k 1k 53.6k
34
COMPA
RGNDA 32
R65 R66
42k 10k
R67
100
GFX VCC_SENSE
VGFX
GFX VSS_SENSE
EN 38 EN
31
IMONA
IMONA
R68
GND
C24 R69
100
49 (Exposed Pad)
0.1µF 180k
R70
1.8M
Figure 1. Dual Output Application Circuit
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8167A-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
VID7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID4
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID3
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
VID2
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
VID1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
H1
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
8
8
8
8
8
RT8167A
H0 DAC Voltage
A 0.775
B 0.780
C 0.785
D 0.790
E 0.795
F 0.800
0 0.805
1 0.810
2 0.815
3 0.820
4 0.825
5 0.830
6 0.835
7 0.840
8 0.845
9 0.850
A 0.855
B 0.860
C 0.865
D 0.870
E 0.875
F 0.880
0 0.885
1 0.890
2 0.895
3 0.900
4 0.905
5 0.910
6 0.915
7 0.920
8 0.925
9 0.930
A 0.935
B 0.940
C 0.945
D 0.950
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8167A-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 40 Páginas | |
| PDF Descargar | [ Datasheet RT8167A.PDF ] | |
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