Richtek RT8166BZQW Schematic [ru]

®

RT8166B

Dual Single-Phase PWM Controller for CPU and GPU Core Power Supply

General Description

The RT8166B 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 RT8166B 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 RT8166B 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 RT8166B supports both DCR and sense resistor current sensing. The RT8166B 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 RT8166B is available in a WQFN-40L 5x5 small footprint package.

Marking Information

RT8166BZQW : Product Number

RT8166B YMDNN : Date Code

ZQW

YMDNN

Features

Dual Single-Phase PWM Controller for CPU Core and GPU Core Power

IMVP7 Compatible Power Management States

Serial VID Interface

G-NAVPTM Topology

AVP for CPU VR Only

0.5% DAC Accuracy

0.8% System Accuracy

Differential Remote Voltage Sensing

Built-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

Power Good Indicator : VR_READY/VRA_READY for CPU/GPU Core Power

Thermal Throttling Indicator : VRHOT

Diode Emulation Mode at Light Load Condition

Fast Line/Load Transient Response

Switching Frequency up to 1MHz per Phase

OVP, UVP, NVP, OTP, UVLO, OCP

Small 40-Lead WQFN Package

RoHS Compliant and Halogen Free

Applications

IMVP7 Intel CPU/GPU Core Power Supply

Laptop Computers

AVP Step-Down Converter

Copyright ©2013 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

DS8166B-03 November 2013	www.richtek.com
	1

RT8166B
Ordering Information	Pin Configurations
RT8166B				(TOP VIEW)
Package Type		UGATE1	PHASE1 LGATE1	PVCC	LGATEA PHASEA	UGATEA	BOOTA EN	TONSETA
QW : WQFN-40L 5x5 (W-Type)
Lead Plating System
Z : ECO (Ecological Element with		40	39 38	37	36 35	34	33 32 31
Halogen Free and Pb free)
	BOOT1	1						30	ISENAP
Note :	TONSET	2						29	ISENAN
	ISEN1P	3						28	COMPA
Richtek products are :
	ISEN1N	4						27	FBA
 RoHS compliant and compatible with the current require-	COMP	5			GND			26	RGNDA
	FB	6						25	VCLK
ments of IPC/JEDEC J-STD-020.
	RGND	7						24	VDIO
 Suitable for use in SnPb or Pb-free soldering processes.	GFXPS2	8					41	23	ALERT
	VCC	9						22	VRA_READY
	SETINIA 10							21	VR_READY
		11 12 13		14	15 16	17	18 19 20
		SETINI	TMPMAX ICCMAX	ICCMAXA	TSEN OCSET	TSENA	OCSETA IBIAS	VRHOT
				WQFN-40L 5x5

Copyright ©2013 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

www.richtek.com	DS8166B-03 November 2013
2

RT8166B

Typical Application Circuit

					R1				V
					2.2					CC	9
5V
										C1
										1µF
V
CCP	R6	R7		R8	R9		R10			R11
VCLK	130	130		150	10k		10k			75	25
											24
VDIO
											23
ALERT
											22
VRA_READY
											21
VR_READY
											20
VRHOT
V
CC
		R17		R18		R19				R20
		27k		8.7k		10k				10k
OCSETA											18
											16
OCSET
											10
SETINIA
											11
SETINI
		R24		R25		R26				R27
		10k		10k		NC				NC
V
CC
		R29		R30		R31				R32
		51k		150k		100k				NC
TMPMAX											12
											13
ICCMAX
											14
ICCMAXA
											8
GFXPS2
		R37		R38		R39				R40
		33k		5.1k		1.6k				10k
V
CC						NTC
R46	NTC
				R47				TA
12k	10k		T1			10k
				12k
						ß = 3380
	ß = 3380
	R71			R72
	750			750							17
											15
	R52			R53							19
	1k						R54
				1k
							53.6k
	Chip Enable										32

RT8166B

R2

R3

VCC

TONSET

2

130k

5.1

V

IN

C2

5V to 25V

0.1µF

C3

40

R4

0

Q1

UGATE1

10µF

DCR = 7.6m

R5

0

C4

V

BOOT1

1

L1

CORE

0.1µF

Optional

1µH

39

VCLK

PHASE1

C5

C26

VDIO

38

R12

0

Q2

R13

330µF

ALERT

LGATE1

R14

C6

330µF

/9m

/9m

0.068µF

VRA_READY

37

C7

3.9k

VR_READY

PVCC

5V

C8

NTC

VRHOT

R15

1

1µF

R16

4.7k

4.7k

3

2.4k

ß

= 3500

ISEN1P

4

ISEN1N

Optional

Optional

C9 Optional

FB

6

OCSETA

C10

C11

CORE V

SENSE

OCSET

CC

SETINIA

5

R21

R22

R23

SETINI

COMP

VCORE

71k

10k

100

7

RGND

CORE VSS SENSE

R28

R33

R34

100

TONSETA

31

130k

5.1

V

IN

C12

5V to 25V

0.1µF

UGATEA

34

R35

0

Q3

C14

10µF

TMPMAX

33

R36

0

C13

DCR

= 14.6m

ICCMAX

BOOTA

VGFX

0.1µF

ICCMAXA

L2

35

Optional

2µH

GFXPS2

PHASEA

C16

C17

C27

R43

R42

330µF

330µF

R41

0

Q4

0.1µF

LGATEA

36

11k

/15m

/15m

C15

NTC

R45

R44

A

1k

1k

ISENAP

30

1.2k

ß

= 3650

ISENAN

29

C18

Optional

Optional

Optional

FBA

27

C19

C20

GFX V

SENSE

TSENA

CC

28

R48

R49

R50

TSEN

COMPA

V

IBIAS

26

42k

10k

100

GFX

RGNDA

GFX V

SS

SENSE

41

(Exposed Pad)

R51

GND

100

EN

Copyright ©2013 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

DS8166B-03 November 2013	www.richtek.com
	3

RT8166B

Table 1. IMVP7/VR12 Compliant VID Table

VID7	VID6	VID5	VID4	VID3		VID2	VID1	VID0	H1	H0	VDAC Voltage
0	0	0	0	0		0	0	0	0	0	0.000
0	0	0	0	0		0	0	1	0	1	0.250
0	0	0	0	0		0	1	0	0	2	0.255
0	0	0	0	0		0	1	1	0	3	0.260
0	0	0	0	0		1	0	0	0	4	0.265
0	0	0	0	0		1	0	1	0	5	0.270
0	0	0	0	0		1	1	0	0	6	0.275
						1
0	0	0	0	0			1	1	0	7	0.280
0	0	0	0	1		0	0	0	0	8	0.285
0	0	0	0	1		0	0	1	0	9	0.290
0	0	0	0	1		0	1	0	0	A	0.295
0	0	0	0	1		0	1	1	0	B	0.300
0	0	0	0	1		1	0	0	0	C	0.305
0	0	0	0	1		1	0	1	0	D	0.310
0	0	0	0	1		1	1	0	0	E	0.315
0	0	0	0	1		1	1	1	0	F	0.320
0	0	0	1	0		0	0	0	1	0	0.325
0	0	0	1	0		0	0	1	1	1	0.330
0	0	0	1	0		0	1	0	1	2	0.335
0	0	0	1	0		0	1	1	1	3	0.340
0	0	0	1	0		1	0	0	1	4	0.345
0	0	0	1	0		1	0	1	1	5	0.350
0	0	0	1	0		1	1	0	1	6	0.355
0	0	0	1	0		1	1	1	1	7	0.360
0	0	0	1	1		0	0	0	1	8	0.365
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
Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

www.richtek.com	DS8166B-03 November 2013
4

											RT8166B
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	0	1	0	1			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
Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

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	5

RT8166B

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	1	1	0	1		0	0	1	6	9	0.770
Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

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											RT8166B
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
0	1	1	1	0		1	0	0	7	4		0.825
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
0	1	1	1	1		1	0	0	7	C		0.865
0	1	1	1	1		1	0	1	7	D		0.870
0	1	1	1	1		1	1	0	7	E		0.875
0	1	1	1	1		1	1	1	7	F		0.880
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
1	0	0	0	1		1	0	1	8	D		0.950
Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

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	7

RT8166B

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
Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

www.richtek.com	DS8166B-03 November 2013
8

											RT8166B
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		1.300
1	1	0	1	0		1	0	0	D	4		1.305
1	1	0	1	0		1	0	1	D	5		1.310
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RT8166B

VID7	VID6	VID5	VID4	VID3		VID2	VID1	VID0	H1	H0	DAC Voltage
1	1	0	1	0		1	1	0	D	6	1.315
1	1	0	1	0		1	1	1	D	7	1.320
1	1	0	1	1		0	0	0	D	8	1.325
1	1	0	1	1		0	0	1	D	9	1.330
1	1	0	1	1		0	1	0	D	A	1.335
1	1	0	1	1		0	1	1	D	B	1.340
1	1	0	1	1		1	0	0	D	C	1.345
1	1	0	1	1		1	0	1	D	D	1.350
1	1	0	1	1		1	1	0	D	E	1.355
1	1	0	1	1		1	1	1	D	F	1.360
1	1	1	0	0		0	0	0	E	0	1.365
1	1	1	0	0		0	0	1	E	1	1.370
1	1	1	0	0		0	1	0	E	2	1.375
1	1	1	0	0		0	1	1	E	3	1.380
1	1	1	0	0		1	0	0	E	4	1.385
1	1	1	0	0		1	0	1	E	5	1.390
1	1	1	0	0		1	1	0	E	6	1.395
1	1	1	0	0		1	1	1	E	7	1.400
1	1	1	0	1		0	0	0	E	8	1.405
1	1	1	0	1		0	0	1	E	9	1.410
1	1	1	0	1		0	1	0	E	A	1.415
1	1	1	0	1		0	1	1	E	B	1.420
1	1	1	0	1		1	0	0	E	C	1.425
1	1	1	0	1		1	0	1	E	D	1.430
1	1	1	0	1		1	1	0	E	E	1.435
1	1	1	0	1		1	1	1	E	F	1.440
1	1	1	1	0		0	0	0	F	0	1.445
1	1	1	1	0		0	0	1	F	1	1.450
1	1	1	1	0		0	1	0	F	2	1.455
1	1	1	1	0		0	1	1	F	3	1.460
1	1	1	1	0		1	0	0	F	4	1.465
1	1	1	1	0		1	0	1	F	5	1.470
1	1	1	1	0		1	1	0	F	6	1.475
1	1	1	1	0		1	1	1	F	7	1.480
1	1	1	1	1		0	0	0	F	8	1.485
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										RT8166B
VID7	VID6	VID5	VID4	VID3	VID2	VID1	VID0	H1	H0		DAC Voltage
1	1	1	1	1	0	0	1	F	9		1.490
1	1	1	1	1	0	1	0	F	A		1.495
1	1	1	1	1	0	1	1	F	B		1.500
1	1	1	1	1	1	0	0	F	C		1.505
1	1	1	1	1	1	0	1	F	D		1.510
1	1	1	1	1	1	1	0	F	E		1.515
1	1	1	1	1	1	1	1	F	F		1.520

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	11

RT8166B

Functional Pin Description

	Pin No.			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.
	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.
	3	ISEN1P					Positive Current Sense Input Pin of CPU VR.
	4	ISEN1N					Negative Current Sense Input Pin of CPU VR.
	5	COMP					CPU VR Compensation Pin. This pin is the output of the error amplifier.
	6	FB					CPU VR Feedback Pin. This pin is the inverting input node of the error amplifier.
	7	RGND					Return Ground for CPU VR. This pin is the inverting input node for differential
							remote voltage sensing.
	8	GFXPS2					Set Pin for GPU VR Operation Mode. Logic-high on this pin will force the GPU VR
							to enter DCM.
	9	VCC					Controller Power Supply Pin. Connect this pin to GND via a ceramic capacitor
							larger than 1 F.
	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.
							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
							over current threshold, ILIMIT, for CPU VR.
	17	TSENA					Thermal Monitor Sense Input for GPU VR.
							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
							over current threshold, ILIMIT, for GPU VR.
	19	IBIAS					Internal Bias Current Setting. Connect a 53.6k resistor from this pin to GND to
							set the internal bias current.
	20						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						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.
	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.
	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.
	Copyright ©2013 Richtek Technology Corporation. All rights reserved.							is a registered trademark of Richtek Technology Corporation.

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