RT8168B
Dual Single-Phase PWM Controller for CPU and GPU Core Power Supply
General Description
The RT8168B is a dual single-phase PWM controller with integrated MOSFET drivers, compliant with Intel IMVP7 Pulse Width Modulation Specification to support both CPU core andGPU core power. This part adoptsG-NAVPTM (Green-NativeAVP), which is a Richtek proprietary topology derived from finite DC gain compensator in constant ontime control mode. G-NAVPTM makes this part an easy setting PWM controller to meet all Intel AVP (Active Voltage Positioning) mobile CPU/GPU requirements. The RT8168B uses SVID interface to control an 8-bit DAC for output voltage programming. The built-in high accuracy DAC converts the received VID code into a voltage value ranging from 0V to 1.52V with 5mV step voltage. The system accuracy of the controller can reach 0.8%. The RT8168B operates in continuous conduction mode or diode emulation mode, according to the SVID command. The maximum efficiency can reach up to 90% in different operating modes according to different load conditions. The droop function (load line) can be easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimized AVP performance.
The output voltage transition slew rate is set via the SVID interface. The RT8168B supports both DCR and sense resistor current sensing. The RT8168B provides VR_READY and thermal throttling output signals for IMVP7 CPU and GPU core. This part also features complete fault protection functions including over voltage, under voltage, negative voltage, over current and thermal shutdown.
The RT8168B is available in a WQFN-40L 5x5 small footprint package.
Features
zDual Single-Phase PWM Controller for CPU Core and GPU Core Power
zIMVP7 Compatible Power Management States
zSerial VID Interface
zG-NAVPTM Topology
zAVP for CPU VR Only
z0.5% DAC Accuracy
z0.8% System Accuracy
zDifferential Remote Voltage Sensing
zBuilt-in ADC for Platform Programming
`SETINI/SETINIA for CPU/GPU Core VR Initial Startup Voltage
`TMPMAX to Set Platform Maximum Temperature
`ICCMAX/ICCMAXA for CPU/GPU Core VR Maximum Current
zPower Good Indicator : VR_READY/VRA_READY for CPU/GPU Core Power
zThermal Throttling Indicator : VRHOT
zDiode Emulation Mode at Light Load Condition
zFast Line/Load Transient Response
zSwitching Frequency up to 1MHz per Phase
zOVP, UVP, NVP, OTP, UVLO, OCP
zSmall 40-Lead WQFN Package
zRoHS Compliant and Halogen Free
Applications
zIMVP7 Intel CPU/GPU Core Power Supply
zLaptop Computers
zAVP Step-Down Converter
DS8168B-00 November 2011 |
www.richtek.com |
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1 |
RT8168B
Ordering Information |
Pin Configurations |
RT8168B |
(TOP VIEW) |
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Package Type |
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UGATE1 |
PHASE1 LGATE1 |
PVCC LGATEA PHASEA UGATEA |
BOOTA EN |
TONSETA |
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Lead Plating System |
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QW : WQFN-40L 5x5 (W-Type) |
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Note : |
G : Green (Halogen Free and Pb Free) |
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40 39 38 37 36 35 34 |
33 32 31 |
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BOOT1 |
1 |
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30 |
ISENAP |
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Richtek products are : |
TONSET |
2 |
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29 |
ISENAN |
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ISEN1P |
3 |
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28 |
COMPA |
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` RoHS compliant and compatible with the current require- |
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ISEN1N |
4 |
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27 |
FBA |
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ments of IPC/JEDEC J-STD-020. |
COMP |
5 |
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GND |
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26 |
RGNDA |
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FB |
6 |
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25 |
VCLK |
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` Suitable for use in SnPb or Pb-free soldering processes. |
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RGND |
7 |
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24 |
VDIO |
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GFXPS2 |
8 |
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41 |
23 |
ALERT |
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VCC |
9 |
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22 |
VRA_READY |
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Marking Information |
11 12 13 14 15 16 17 |
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SETINIA 10 |
18 19 20 |
VR_READY |
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21 |
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RT8168BGQW : Product Number |
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SETINI |
TMPMAX ICCMAX |
ICCMAXA TSEN OCSET TSENA |
OCSETA IBIAS |
VRHOT |
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RT8168B |
YMDNN : Date Code |
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GQW |
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YMDNN |
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WQFN-40L 5x5 |
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www.richtek.com |
DS8168B-00 November 2011 |
2
RT8168B
Typical Application Circuit
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R1 |
VCC |
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RT8168B |
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R2 |
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R3 |
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5V |
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2.2 |
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9 |
VCC |
TONSET |
2 |
130k |
5.1 |
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C1 |
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C2 |
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1µF |
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0.1µF |
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V |
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R4 |
0 |
Q1 |
CCP |
R7 |
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UGATE1 |
40 |
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R6 |
R8 |
R9 |
R10 |
R11 |
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BOOT1 |
1 |
R5 |
0 |
C4 |
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0.1µF |
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130 |
130 |
150 |
10k |
10k |
75 |
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25 |
VCLK |
PHASE1 |
39 |
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VCLK |
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24 |
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VDIO |
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VDIO |
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38 |
R12 |
0 |
Q2 |
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23 |
LGATE1 |
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ALERT |
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ALERT |
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22 |
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VRA_READY |
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VRA_READY |
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37 |
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21 |
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VR_READY |
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VR_READY |
PVCC |
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5V |
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20 |
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VRHOT |
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VRHOT |
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C8 |
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1µF |
V |
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CC |
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R17 |
R18 |
R19 |
R20 |
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27k |
8.7k |
10k |
10k |
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OCSETA |
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18 |
OCSETA |
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16 |
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OCSET |
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OCSET |
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10 |
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SETINIA |
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SETINIA |
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11 |
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SETINI |
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SETINI |
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R24 |
R25 |
R26 |
R27 |
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10k |
10k |
NC |
NC |
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ISEN1P |
3 |
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4 |
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ISEN1N |
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FB |
6 |
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COMP |
5 |
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7 |
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RGND |
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Optional |
Optional |
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C10 |
C11 |
R21 |
R22 |
71k |
10k |
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R33 |
R34 |
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V |
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TONSETA |
31 |
130k |
5.1 |
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CC |
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C12 |
R29 |
R30 |
R31 |
R32 |
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0.1µF |
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R35 |
0 |
Q3 |
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51k |
150k |
100k |
NC |
UGATEA |
34 |
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TMPMAX |
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12 |
TMPMAX |
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R36 |
0 |
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13 |
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33 |
C13 |
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ICCMAX |
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ICCMAX |
BOOTA |
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14 |
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0.1µF |
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ICCMAXA |
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ICCMAXA |
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8 |
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35 |
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GFXPS2 |
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GFXPS2 |
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PHASEA |
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R37 |
R38 |
R39 |
R40 |
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LGATEA |
36 |
R41 |
0 |
Q4 |
33k |
5.1k |
1.6k |
10k |
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VCC
R46 |
NTC |
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NTC |
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R47 |
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TA |
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T1 |
10k |
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12k |
10k |
12k |
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ß = 3380 |
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ß = 3380 |
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R71 |
R72 |
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750 |
750 |
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17 |
TSENA |
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15 |
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TSEN |
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19 |
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R52 |
R53 |
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IBIAS |
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1k |
R54 |
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1k |
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53.6k |
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Chip Enable |
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32 |
EN |
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ISENAP 30 |
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ISENAN |
29 |
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FBA |
27 |
Optional |
Optional |
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C19 |
C20 |
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COMPA |
28 |
R48 |
R49 |
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26 |
42k |
10k |
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RGNDA |
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GND |
41 |
(Exposed Pad) |
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V |
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IN |
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5V to 25V |
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C3 |
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10µF |
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DCR = 7.6m |
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V |
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L1 |
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CORE |
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Optional |
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1µH |
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R13 |
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C5 |
C26 |
R14 |
C6 |
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330µF |
330µF |
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/9m |
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0.068µF |
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/9m |
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C7 |
3.9k |
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R15 |
NTC |
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1 |
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R16 |
4.7k |
4.7k |
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2.4k |
ß = 3500 |
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C9 |
Optional |
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CORE V |
SENSE |
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CC |
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R23 |
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VCORE |
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100 |
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CORE VSS |
SENSE |
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R28 |
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100 |
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V |
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IN |
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5V to 25V |
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C14 |
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10µF |
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DCR = 14.6m |
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L2 |
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Optional |
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2µH |
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R42 |
R43 |
C16 |
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0.1µF |
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11k |
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C15 |
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R45 |
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1.2k |
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V |
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GFX |
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C17 |
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C27 |
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330µF |
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330µF |
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/15m |
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/15m |
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R44 |
NTC |
A |
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1k |
1k |
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ß = 3650 |
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C18 |
Optional |
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GFX V |
SENSE |
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CC |
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R50 |
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V |
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100 |
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GFX |
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GFX V |
SENSE |
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SS |
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R51 |
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100 |
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DS8168B-00 November 2011 |
www.richtek.com |
|
3 |
RT8168B
Table 1. IMVP7/VR12 Compliant VID Table
VID7 |
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
H0 |
VDAC Voltage |
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0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.000 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0.250 |
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0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
2 |
0.255 |
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0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
3 |
0.260 |
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0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
4 |
0.265 |
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0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
5 |
0.270 |
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0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
6 |
0.275 |
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0 |
0 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
7 |
0.280 |
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0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
8 |
0.285 |
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0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
9 |
0.290 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
A |
0.295 |
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0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
B |
0.300 |
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0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
C |
0.305 |
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0 |
0 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
D |
0.310 |
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0 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
E |
0.315 |
0 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
F |
0.320 |
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0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0.325 |
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0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0.330 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
2 |
0.335 |
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0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
3 |
0.340 |
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0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
4 |
0.345 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
5 |
0.350 |
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0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
6 |
0.355 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
7 |
0.360 |
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0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
8 |
0.365 |
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0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
9 |
0.370 |
0 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
A |
0.375 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
1 |
B |
0.380 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
C |
0.385 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
D |
0.390 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
E |
0.395 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
F |
0.400 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0.405 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
2 |
1 |
0.410 |
|
|
|
|
|
|
|
|
|
|
|
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
2 |
2 |
0.415 |
|
|
|
|
|
|
|
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|
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|
To be continued |
|
|
www.richtek.com |
DS8168B-00 November 2011 |
4
|
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|
RT8168B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VID7 |
|
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
H0 |
|
DAC Voltage |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
0 |
0 |
1 |
1 |
2 |
3 |
|
0.420 |
0 |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
2 |
4 |
|
0.425 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
0 |
1 |
0 |
1 |
2 |
5 |
|
0.430 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
0 |
1 |
1 |
0 |
2 |
6 |
|
0.435 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
0 |
1 |
1 |
1 |
2 |
7 |
|
0.440 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
0 |
0 |
0 |
2 |
8 |
|
0.445 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
0 |
0 |
1 |
2 |
9 |
|
0.450 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
A |
|
|
0 |
|
1 |
0 |
1 |
0 |
1 |
0 |
2 |
|
0.455 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
0 |
1 |
1 |
2 |
B |
|
0.460 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
1 |
0 |
0 |
2 |
C |
|
0.465 |
0 |
|
0 |
1 |
0 |
1 |
1 |
0 |
1 |
2 |
D |
|
0.470 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
1 |
1 |
0 |
2 |
E |
|
0.475 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
0 |
1 |
1 |
1 |
1 |
2 |
F |
|
0.480 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
0 |
0 |
0 |
3 |
0 |
|
0.485 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
0 |
0 |
1 |
3 |
1 |
|
0.490 |
0 |
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
3 |
2 |
|
0.495 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
3 |
3 |
|
0.500 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
1 |
0 |
0 |
3 |
4 |
|
0.505 |
0 |
|
0 |
1 |
1 |
0 |
1 |
0 |
1 |
3 |
5 |
|
0.510 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
1 |
1 |
0 |
3 |
6 |
|
0.515 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
0 |
1 |
1 |
1 |
3 |
7 |
|
0.520 |
0 |
|
0 |
1 |
1 |
1 |
0 |
0 |
0 |
3 |
8 |
|
0.525 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
1 |
0 |
0 |
1 |
3 |
9 |
|
0.530 |
0 |
|
0 |
1 |
1 |
1 |
0 |
1 |
0 |
3 |
A |
|
0.535 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
1 |
0 |
1 |
1 |
3 |
B |
|
0.540 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
1 |
1 |
0 |
0 |
3 |
C |
|
0.545 |
0 |
|
0 |
1 |
1 |
1 |
1 |
0 |
1 |
3 |
D |
|
0.550 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
1 |
1 |
1 |
0 |
3 |
E |
|
0.555 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
1 |
1 |
1 |
1 |
1 |
1 |
3 |
F |
|
0.560 |
0 |
|
1 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
0 |
|
0.565 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
0 |
0 |
0 |
0 |
0 |
1 |
4 |
1 |
|
0.570 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
0 |
0 |
0 |
0 |
1 |
0 |
4 |
2 |
|
0.575 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
0 |
0 |
0 |
0 |
1 |
1 |
4 |
3 |
|
0.580 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
0 |
0 |
0 |
1 |
0 |
0 |
4 |
4 |
|
0.585 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
0 |
0 |
0 |
1 |
0 |
1 |
4 |
5 |
|
0.590 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
To be continued |
|
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|
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|
|
DS8168B-00 |
November 2011 |
|
|
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|
|
www.richtek.com |
||
|
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|
5 |
RT8168B
VID7 |
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
|
H0 |
DAC Voltage |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
4 |
|
6 |
0.595 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
4 |
|
7 |
0.600 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
4 |
|
8 |
0.605 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
4 |
|
9 |
0.610 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
4 |
|
A |
0.615 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
4 |
|
B |
0.620 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
4 |
|
C |
0.625 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
4 |
|
D |
0.630 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
4 |
|
E |
0.635 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
4 |
|
F |
0.640 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
5 |
|
0 |
0.645 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
5 |
|
1 |
0.650 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
5 |
|
2 |
0.655 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
5 |
|
3 |
0.660 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
5 |
|
4 |
0.665 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
5 |
|
5 |
0.670 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
5 |
|
6 |
0.675 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
5 |
|
7 |
0.680 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
5 |
|
8 |
0.685 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
1 |
0 |
0 |
1 |
5 |
|
9 |
0.690 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
5 |
|
A |
0.695 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
5 |
|
B |
0.700 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
1 |
1 |
0 |
0 |
5 |
|
C |
0.705 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
5 |
|
D |
0.710 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
5 |
|
E |
0.715 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
5 |
|
F |
0.720 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
6 |
|
0 |
0.725 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
6 |
|
1 |
0.730 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
6 |
|
2 |
0.735 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
6 |
|
3 |
0.740 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
6 |
|
4 |
0.745 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
6 |
|
5 |
0.750 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
6 |
|
6 |
0.755 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
6 |
|
7 |
0.760 |
|
|
|
|
|
|
|
|
|
|
|
|
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
6 |
|
8 |
0.765 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
0 |
0 |
|
6 |
|
|
0.770 |
0 |
1 |
1 |
1 |
1 |
|
9 |
|||||
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To be continued |
|
|
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|
www.richtek.com |
|
|
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|
|
|
|
DS8168B-00 |
November 2011 |
6
|
|
|
|
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|
|
|
|
|
RT8168B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VID7 |
|
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
H0 |
|
DAC Voltage |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
0 |
1 |
0 |
1 |
0 |
6 |
A |
|
0.775 |
0 |
|
1 |
1 |
0 |
1 |
0 |
1 |
1 |
6 |
B |
|
0.780 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
0 |
1 |
1 |
0 |
0 |
6 |
C |
|
0.785 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
0 |
1 |
1 |
0 |
1 |
6 |
D |
|
0.790 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
0 |
1 |
1 |
1 |
0 |
6 |
E |
|
0.795 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
0 |
1 |
1 |
1 |
1 |
6 |
F |
|
0.800 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
0 |
0 |
0 |
7 |
0 |
|
0.805 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
0 |
0 |
1 |
7 |
1 |
|
0.810 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
0 |
1 |
0 |
7 |
2 |
|
0.815 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
0 |
1 |
1 |
7 |
3 |
|
0.820 |
|
|
1 |
1 |
1 |
0 |
1 |
0 |
0 |
7 |
4 |
|
0.825 |
0 |
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
1 |
0 |
1 |
7 |
5 |
|
0.830 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
1 |
1 |
0 |
7 |
6 |
|
0.835 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
0 |
1 |
1 |
1 |
7 |
7 |
|
0.840 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
1 |
0 |
0 |
0 |
7 |
8 |
|
0.845 |
0 |
|
1 |
1 |
1 |
1 |
0 |
0 |
1 |
7 |
9 |
|
0.850 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
1 |
0 |
1 |
0 |
7 |
A |
|
0.855 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
1 |
0 |
1 |
1 |
7 |
B |
|
0.860 |
|
|
1 |
1 |
1 |
1 |
1 |
0 |
0 |
7 |
C |
|
0.865 |
0 |
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
1 |
1 |
0 |
1 |
7 |
D |
|
0.870 |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
1 |
1 |
1 |
1 |
1 |
1 |
0 |
7 |
E |
|
0.875 |
|
|
1 |
1 |
1 |
1 |
1 |
1 |
1 |
7 |
F |
|
0.880 |
0 |
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
8 |
0 |
|
0.885 |
1 |
|
0 |
0 |
0 |
0 |
0 |
0 |
1 |
8 |
1 |
|
0.890 |
1 |
|
0 |
0 |
0 |
0 |
0 |
1 |
0 |
8 |
2 |
|
0.895 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
0 |
0 |
1 |
1 |
8 |
3 |
|
0.900 |
1 |
|
0 |
0 |
0 |
0 |
1 |
0 |
0 |
8 |
4 |
|
0.905 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
0 |
1 |
0 |
1 |
8 |
5 |
|
0.910 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
0 |
1 |
1 |
0 |
8 |
6 |
|
0.915 |
1 |
|
0 |
0 |
0 |
0 |
1 |
1 |
1 |
8 |
7 |
|
0.920 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
1 |
0 |
0 |
0 |
8 |
8 |
|
0.925 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
1 |
0 |
0 |
1 |
8 |
9 |
|
0.930 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
1 |
0 |
1 |
0 |
8 |
A |
|
0.935 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
1 |
0 |
1 |
1 |
8 |
B |
|
0.940 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
0 |
0 |
1 |
1 |
0 |
0 |
8 |
C |
|
0.945 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
D |
|
0.950 |
1 |
|
0 |
0 |
1 |
1 |
0 |
1 |
8 |
|
|||
|
|
|
|
|
|
|
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|
|
To be continued |
|
|
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|
|
|
|
|
|
|
|
|
DS8168B-00 |
November 2011 |
|
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www.richtek.com |
||
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7 |
RT8168B
VID7 |
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
|
H0 |
DAC Voltage |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
8 |
|
E |
0.955 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
8 |
|
F |
0.960 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
9 |
|
0 |
0.965 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
9 |
|
1 |
0.970 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
9 |
|
2 |
0.975 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
9 |
|
3 |
0.980 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
9 |
|
4 |
0.985 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
9 |
|
5 |
0.990 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
9 |
|
6 |
0.995 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
9 |
|
7 |
1.000 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
9 |
|
8 |
1.005 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
9 |
|
9 |
1.010 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
9 |
|
A |
1.015 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
9 |
|
B |
1.020 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
9 |
|
C |
1.025 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
9 |
|
D |
1.030 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
9 |
|
E |
1.035 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
9 |
|
F |
1.040 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
A |
|
0 |
1.045 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
A |
|
1 |
1.050 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
A |
|
2 |
1.055 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
A |
|
3 |
1.060 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
A |
|
4 |
1.065 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
A |
|
5 |
1.070 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
A |
|
6 |
1.075 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
A |
|
7 |
1.080 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
A |
|
8 |
1.085 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
A |
|
9 |
1.090 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
A |
|
A |
1.095 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
A |
|
B |
1.100 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
A |
|
C |
1.105 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
A |
|
D |
1.110 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
A |
|
E |
1.115 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
A |
|
F |
1.120 |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
B |
|
0 |
1.125 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
B |
|
1 |
1.130 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
To be continued |
|
|
|
|
|
|
|
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|
|
|
|
www.richtek.com |
|
|
|
|
|
|
|
DS8168B-00 |
November 2011 |
8
|
|
|
|
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|
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|
|
RT8168B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VID7 |
|
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
H0 |
|
DAC Voltage |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
B |
2 |
|
1.135 |
1 |
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
B |
3 |
|
1.140 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
0 |
1 |
0 |
0 |
B |
4 |
|
1.145 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
0 |
1 |
0 |
1 |
B |
5 |
|
1.150 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
0 |
1 |
1 |
0 |
B |
6 |
|
1.155 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
0 |
1 |
1 |
1 |
B |
7 |
|
1.160 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
0 |
0 |
0 |
B |
8 |
|
1.165 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
0 |
0 |
1 |
B |
9 |
|
1.170 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
0 |
1 |
0 |
B |
A |
|
1.175 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
0 |
1 |
1 |
B |
B |
|
1.180 |
1 |
|
0 |
1 |
1 |
1 |
1 |
0 |
0 |
B |
C |
|
1.185 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
1 |
0 |
1 |
B |
D |
|
1.190 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
1 |
1 |
0 |
B |
E |
|
1.195 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
0 |
1 |
1 |
1 |
1 |
1 |
1 |
B |
F |
|
1.200 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
0 |
0 |
0 |
C |
0 |
|
1.205 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
0 |
0 |
1 |
C |
1 |
|
1.210 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
0 |
1 |
0 |
C |
2 |
|
1.215 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
0 |
1 |
1 |
C |
3 |
|
1.220 |
1 |
|
1 |
0 |
0 |
0 |
1 |
0 |
0 |
C |
4 |
|
1.225 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
1 |
0 |
1 |
C |
5 |
|
1.230 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
0 |
1 |
1 |
0 |
C |
6 |
|
1.235 |
1 |
|
1 |
0 |
0 |
0 |
1 |
1 |
1 |
C |
7 |
|
1.240 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
1 |
0 |
0 |
0 |
C |
8 |
|
1.245 |
1 |
|
1 |
0 |
0 |
1 |
0 |
0 |
1 |
C |
9 |
|
1.250 |
1 |
|
1 |
0 |
0 |
1 |
0 |
1 |
0 |
C |
A |
|
1.255 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
1 |
0 |
1 |
1 |
C |
B |
|
1.260 |
1 |
|
1 |
0 |
0 |
1 |
1 |
0 |
0 |
C |
C |
|
1.265 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
1 |
1 |
0 |
1 |
C |
D |
|
1.270 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
0 |
1 |
1 |
1 |
0 |
C |
E |
|
1.275 |
1 |
|
1 |
0 |
0 |
1 |
1 |
1 |
1 |
C |
F |
|
1.280 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
1 |
0 |
0 |
0 |
0 |
D |
0 |
|
1.285 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
1 |
0 |
0 |
0 |
1 |
D |
1 |
|
1.290 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
1 |
0 |
0 |
1 |
0 |
D |
2 |
|
1.295 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
1 |
0 |
1 |
0 |
0 |
1 |
1 |
D |
3 |
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1.300 |
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1 |
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1 |
0 |
1 |
0 |
1 |
0 |
0 |
D |
4 |
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1.305 |
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1 |
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1 |
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D |
5 |
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1.310 |
1 |
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0 |
1 |
0 |
0 |
1 |
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To be continued |
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DS8168B-00 |
November 2011 |
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www.richtek.com |
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9 |
RT8168B
VID7 |
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
|
H0 |
DAC Voltage |
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1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
D |
|
6 |
1.315 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
D |
|
7 |
1.320 |
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1 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
D |
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8 |
1.325 |
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1 |
1 |
0 |
1 |
1 |
0 |
0 |
1 |
D |
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9 |
1.330 |
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1 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
D |
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A |
1.335 |
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1 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
D |
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B |
1.340 |
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1 |
1 |
0 |
1 |
1 |
1 |
0 |
0 |
D |
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C |
1.345 |
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1 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
D |
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D |
1.350 |
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1 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
D |
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E |
1.355 |
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1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
D |
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F |
1.360 |
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1 |
1 |
0 |
0 |
0 |
0 |
0 |
E |
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0 |
1.365 |
1 |
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1 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
E |
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1 |
1.370 |
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1 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
E |
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2 |
1.375 |
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1 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
E |
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3 |
1.380 |
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1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
E |
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4 |
1.385 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
E |
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5 |
1.390 |
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1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
E |
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6 |
1.395 |
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1 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
E |
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7 |
1.400 |
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1 |
1 |
0 |
1 |
0 |
0 |
0 |
E |
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8 |
1.405 |
1 |
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1 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
E |
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9 |
1.410 |
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1 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
E |
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A |
1.415 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
E |
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B |
1.420 |
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1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
E |
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C |
1.425 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
E |
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D |
1.430 |
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1 |
1 |
0 |
1 |
1 |
1 |
0 |
E |
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E |
1.435 |
1 |
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1 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
E |
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F |
1.440 |
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1 |
1 |
1 |
0 |
0 |
0 |
0 |
F |
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0 |
1.445 |
1 |
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1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
F |
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1 |
1.450 |
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1 |
1 |
1 |
0 |
0 |
1 |
0 |
F |
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2 |
1.455 |
1 |
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1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
F |
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3 |
1.460 |
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1 |
1 |
1 |
0 |
1 |
0 |
0 |
F |
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4 |
1.465 |
1 |
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1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
F |
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5 |
1.470 |
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1 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
F |
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6 |
1.475 |
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1 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
F |
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7 |
1.480 |
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1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
F |
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8 |
1.485 |
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To be continued |
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www.richtek.com |
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DS8168B-00 |
November 2011 |
10
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RT8168B |
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VID7 |
VID6 |
VID5 |
VID4 |
VID3 |
VID2 |
VID1 |
VID0 |
H1 |
H0 |
|
DAC Voltage |
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1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
F |
9 |
|
1.490 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
F |
A |
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1.495 |
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1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
F |
B |
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1.500 |
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1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
F |
C |
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1.505 |
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1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
F |
D |
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1.510 |
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1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
F |
E |
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1.515 |
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1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
F |
F |
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1.520 |
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|
DS8168B-00 November 2011 |
www.richtek.com |
|
11 |
RT8168B
Functional Pin Description
Pin No. |
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Pin Name |
Pin Function |
|||
1 |
BOOT1 |
CPU VR Bootstrap Power Pin. This pin powers the high side MOSFET drivers. |
|||||
Connect this pin to the PHASE1 pin with a bootstrap capacitor. |
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2 |
TONSET |
Single-Phase CPU VR On-Time Setting Pin. Connect this pin to VIN with a |
|||||
resistor to set ripple size in PWM mode. |
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3 |
ISEN1P |
Positive Current Sense Input Pin of CPU VR. |
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4 |
ISEN1N |
Negative Current Sense Input Pin of CPU VR. |
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5 |
COMP |
CPU VR Compensation Pin. This pin is the output of the error amplifier. |
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6 |
FB |
CPU VR Feedback Pin. This pin is the inverting input node of the error amplifier. |
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7 |
RGND |
Return Ground for CPU VR. This pin is the inverting input node for differential |
|||||
remote voltage sensing. |
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8 |
GFXPS2 |
Set Pin for GPU VR Operation Mode. Logic-high on this pin will force the GPU VR |
|||||
to enter DCM. |
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9 |
VCC |
Controller Power Supply Pin. Connect this pin to GND via a ceramic capacitor |
|||||
larger than 1μF. |
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||
10 |
SETINIA |
ADC Input for Single-Phase GPU VR VBOOT Voltage Setting. |
|||||
11 |
SETINI |
ADC Input for Single-Phase CPU VR VBOOT Voltage Setting. |
|||||
12 |
TMPMAX |
ADC Input for Single-Phase CPU VR Maximum Temperature Setting. |
|||||
13 |
ICCMAX |
ADC Input for Single-Phase CPU VR Maximum Current Setting. |
|||||
14 |
ICCMAXA |
ADC Input for Single-Phase GPU VR Maximum Current Setting. |
|||||
15 |
TSEN |
Thermal Monitor Sense Input Pin for CPU VR. |
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Set Pin for Single-Phase CPU VR Over Current Protection Threshold. |
|
16 |
OCSET |
Connect a resistive voltage divider from VCC to ground, and connect the joint of |
|||||
the voltage divider to the OCSET pin. The voltage, VOCSET, at this pin sets the |
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over current threshold, ILIMIT, for CPU VR. |
|
17 |
TSENA |
Thermal Monitor Sense Input for GPU VR. |
|||||
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|
|
Set Pin for Single-Phase GPU VR Over Current Protection Threshold. |
|
18 |
OCSETA |
Connect a resistive voltage divider from VCC to ground, and connect the joint of |
|||||
the voltage divider to the OCSETA pin. The voltage, VOCSETA, at this pin sets the |
|||||||
|
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||
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over current threshold, ILIMIT, for GPU VR. |
|
19 |
IBIAS |
Internal Bias Current Setting. Connect a 53.6kΩ resistor from this pin to GND to |
|||||
set the internal bias current. |
|||||||
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||
20 |
|
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|
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Thermal Monitor Output Pin (active low). |
|
VRHOT |
|||||||
21 |
VR_READY |
CPU VR Voltage Ready Indicator. This pin has an open drain output. |
|||||
22 |
VRA_READY |
GPU VR Voltage Ready Indicator. This pin has an open drain output. |
|||||
23 |
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|
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Alert Line of SVID Interface (active low). This pin has an open drain output. |
|||
ALERT |
|||||||
24 |
VDIO |
Data Transmission Line of SVID Interface. |
|||||
25 |
VCLK |
Clock Signal Line of SVID Interface. |
|||||
26 |
RGNDA |
Return Ground for Single-Phase GPU VR. |
|||||
This pin is the inverting input node for differential remote voltage sensing. |
|||||||
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||
27 |
FBA |
GPU VR Feedback Pin. This pin is the inverting input node of the error amplifier. |
|||||
28 |
COMPA |
Single-Phase GPU VR Compensation Pin. This pin is the output of the error |
|||||
amplifier. |
|||||||
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||
29 |
ISENAN |
Negative Current Sense Input Pin of Single-Phase GPU VR. |
|||||
30 |
ISENAP |
Positive Current Sense Input Pin of Single-Phase GPU VR. |
|||||
31 |
TONSETA |
Single-Phase GPU VR On-Time Setting Pin. Connect this pin to VIN with a |
|||||
resistor to set ripple size in PWM mode. |
|||||||
|
|
|
|
|
|
|
To be continued |
|
|
www.richtek.com |
DS8168B-00 November 2011 |
12