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Datasheet RT8152A PDF ( 特性, スペック, ピン接続図 )

部品番号 RT8152A
部品説明 Single-Phase PWM Controller
メーカ RichTek
ロゴ RichTek ロゴ 
プレビュー
Total 24 pages
		
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RT8152A Datasheet, RT8152A PDF,ピン配置, 機能
RT8152A/B
Single-Phase PWM Controller for CPU / GPU Core Power
Supply
General Description
The RT8152A/B is a single phase PWM controller with
integrated MOSFET drivers. Moreover, it is compliant with
Intel IMVP6.5 Voltage Regulator Specification to fulfill its
mobile CPU core and Render core voltage regulator
requirements.
The RT8152A/B adopts G-NAVP (Green-Native AVP),
which is a Richtek's proprietary topology derived from finite
DC gain compensator constant on-time mode, making it
an easy-setting PWM controller meeting all Intel AVP
(Active Voltage Positioning) mobile CPU/Render
requirements. The output voltage of the RT8152A/B is set
by 7-bit VID code. The built-in high accuracy DAC converts
the VID code ranging from 0V to 1.5V with 12.5mV per
step. The system accuracy of the controller can reach
1.5%. The part supports VID on-the-fly and mode change
on-the-fly functions that are fully compliant with IMVP6.5
specification. It operates in single phase and diode
emulation modes. It can reach up to 90% efficiency in
different modes according to different loading conditions.
The droop load-line can be easily programmed by setting
the DC gain of the error amplifier. With proper
compensation, the load transient can achieve optimized
AVP performance. This chip controls soft-start and output
transition slew rate via a capacitor. It supports both DCR
and sense-resistor current sensing.
The RT8152A/B provides power good and thermal throttling
output signals for IMVP6.5 Render core specification, and
additional clock enabling for CPU core specification. It
also features complete fault protection functions including
over voltage, under voltage, negative voltage, over current
and thermal shutdown. The RT8152A/B is available in
WQFN-32L 5x5 small foot print package.
Applications
z IMVP6.5 CPU / Render Core Voltage Regulator
z AVP Step-Down Converter
z Notebook / Desktop Computer / Servers
Features
z Single Phase PWM Controller with Integrated MOS
Driver.
z Low-Gain Compensator with CCRCOT Topology
(Constant Current Ripple Constant On Time)
z 7-bit DAC
z 0.8% DAC Accuracy
z 1.5% or 11.5mV System Accuracy
z Fixed VBOOT (For CPU Core Only)
z Differential Remote Voltage Sensing
z G-NAVP Topology (Green-Native AVP)
z Programmable Output Transition Slew Rate Control
z System Thermal Compensated AVP
z Ringing Free Mode at Light Load Condition
z Fast Transient Response
z IMVP6.5 Compatible Power Management States
z Power Good
z Clock Enable Output (For CPU Core Only)
z Thermal Throttling
z Current Monitor Output
z Switching Frequency Up to 1MHz
z OVP, UVP, OCP, OTP, UVLO, NVP
z 32-Lead WQFN Package
z RoHS Compliant and Halogen Free
Ordering Information
RT8152
Package Type
QW : WQFN-32L 5x5 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
BOOT Output Voltage
A : 1.1V
B : 1.2V
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
DS8152A/B-04 April 2011
www.richtek.com
1

1 Page



RT8152A pdf, ピン配列
RT8152A/B
5V
PWRGD
VRTT
VCC
VCCP
3.3V
R14
NTC2
R1
C1
RT8152A/B
7 VCC
TON 17 R2
VIN
5V to 25V
R3
C3
C5
C2
VID0
VID1
VID2
VID3
VID4
VID5
VID6
DPRSLPVR
VRON
19 PVDD
31 VID0
30 VID1
29 VID2
28 VID3
27 VID4
26 VID5
25 VID6
3 DPRSLPVR
4 VRON
6 CLKEN
5 PGOOD
32 VRTT
R9 R11
1 NTC
R15 R16
2 OCSET
R17
BOOT 24
UGATE 23
PHASE 22
LGATE 20
PGND 21
ISEN 16
ISEN_N 15
CMSET 11
VSEN 12
FB 13
COMP 14
RGND 9
SOFT 8
R4 C4
Q1
R5
R8 Q2
L1
R6 D1 R7 C7
C6
VOUT
COUT
R13 C9
C12 C13
R18 R19 R20 R21
NTC1
C10 R22
GPU VCC_SNS
VOUT
GPU VCC_SNS
CM 10
18, 33 (Exposed Pad)
GND
CM
R12 C11
GPU VCC_SNS
Figure 2. Render Core Voltage Regulator
Functional Pin Description
Pin No.
Pin Name
Pin Function
1 NTC
Thermal Detection Input for VRTT Circuit. Connect this pin with a resistor divider
from VCC using NTC on the top to set the thermal management threshold level.
Over Current Protection Setting. Connect a resistor voltage divider from VCC to
2
OCSET
ground, the joint of the resistor divider is connected to OCSET pin, with a voltage
VOCSET, to set the over current threshold ILIM.
3 DPRSLPVR Deeper Sleep Mode Signal.
4
VRON
Voltage Regulator Enabler.
5
PGOOD
Power Good Indicator.
Inverted Clock Enable. Pull high by a resistor for CPU core application. This
6
CLKEN
open-drain pin is an output indicating the start of the PLL locking of the clock chip.
Connect to GND for Render application.
7 VCC
Chip Power.
Soft-Start. This pin provides soft-start function and slew rate controller. The
capacitance of the slew rate control capacitor is restricted to be larger than 10nF.
8 SOFT The feedback voltage of the converter follows the ramping voltage on the SOFT
pin during soft-start and other voltage transitions according to different mode of
operation and VID change.
Return Ground. This pin is the negative node of the differential remote voltage
9
RGND
sensing.
To be continued
DS8152A/B-04 April 2011
www.richtek.com
3


3Pages


RT8152A 電子部品, 半導体
RT8152A/B
VID6 VID5 VID4 VID3 VID2 VID1 VID0 Output
1 0 0 0 0 1 0 0.6750V
1 0 0 0 0 1 1 0.6625V
1 0 0 0 1 0 0 0.6500V
1 0 0 0 1 0 1 0.6375V
1 0 0 0 1 1 0 0.6250V
1 0 0 0 1 1 1 0.6125V
1 0 0 1 0 0 0 0.6000V
1 0 0 1 0 0 1 0.5875V
1 0 0 1 0 1 0 0.5750V
1 0 0 1 0 1 1 0.5625V
1 0 0 1 1 0 0 0.5500V
1 0 0 1 1 0 1 0.5375V
1 0 0 1 1 1 0 0.5250V
1 0 0 1 1 1 1 0.5125V
1 0 1 0 0 0 0 0.5000V
1 0 1 0 0 0 1 0.4875V
1 0 1 0 0 1 0 0.4750V
1 0 1 0 0 1 1 0.4625V
1 0 1 0 1 0 0 0.4500V
1 0 1 0 1 0 1 0.4375V
1 0 1 0 1 1 0 0.4250V
1 0 1 0 1 1 1 0.4125V
1 0 1 1 0 0 0 0.4000V
1 0 1 1 0 0 1 0.3875V
1 0 1 1 0 1 0 0.3750V
1 0 1 1 0 1 1 0.3625V
1 0 1 1 1 0 0 0.3500V
1 0 1 1 1 0 1 0.3375V
1 0 1 1 1 1 0 0.3250V
1 0 1 1 1 1 1 0.3125V
1 1 0 0 0 0 0 0.3000V
VID6 VID5 VID4 VID3 VID2 VID1 VID0 Output
1 1 0 0 0 0 1 0.2875V
1 1 0 0 0 1 0 0.2750V
1 1 0 0 0 1 1 0.2625V
1 1 0 0 1 0 0 0.2500V
1 1 0 0 1 0 1 0.2375V
1 1 0 0 1 1 0 0.2250V
1 1 0 0 1 1 1 0.2125V
1 1 0 1 0 0 0 0.2000V
1 1 0 1 0 0 1 0.1875V
1 1 0 1 0 1 0 0.1750V
1 1 0 1 0 1 1 0.1625V
1 1 0 1 1 0 0 0.1500V
1 1 0 1 1 0 1 0.1375V
1 1 0 1 1 1 0 0.1250V
1 1 0 1 1 1 1 0.1125V
1 1 1 0 0 0 0 0.1000V
1 1 1 0 0 0 1 0.0875V
1 1 1 0 0 1 0 0.0750V
1 1 1 0 0 1 1 0.0625V
1 1 1 0 1 0 0 0.0500V
1 1 1 0 1 0 1 0.0375V
1 1 1 0 1 1 0 0.0250V
1 1 1 0 1 1 1 0.0125V
1 1 1 1 0 0 0 0.0000V
1 1 1 1 0 0 1 0.0000V
1 1 1 1 0 1 0 0.0000V
1 1 1 1 0 1 1 0.0000V
1 1 1 1 1 0 0 0.0000V
1 1 1 1 1 0 1 0.0000V
1 1 1 1 1 1 0 0.0000V
1 1 1 1 1 1 1 0.0000V
www.richtek.com
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