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Datasheet RT8113 PDF ( 特性, スペック, ピン接続図 )

部品番号 RT8113
部品説明 Single Phase VR11.1 PWM Controller
メーカ Richtek
ロゴ Richtek ロゴ 
プレビュー
Total 21 pages
		
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RT8113 Datasheet, RT8113 PDF,ピン配置, 機能
RT8113
Single Phase VR11.1 PWM Controller with 7-bit VID
General Description
The RT8113 is a single-phase PWM buck controller with
one integrated MOSFET driver for advanced
microprocessor applications such as Atom VCORE or
Ibexpeak Graphic Power. This controller maintains the same
features as the multi-phase product family. However, it
reduces the output to one phase for lower current systems.
Features of this controller include adjustable operation
frequency, power good indication, external error amplifer
compensation, over voltage protection, over current
protection, droop enable/disable capability, externally
adjustable offset voltage, load transient enhancement
(quick response), and enable/shutdown pin to achieve
optimal power management solution for various
applications. The RT8113 comes in a WQFN-24L 4x4
package.
Ordering Information
RT8113
Package Type
QW : WQFN-24L 4x4 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
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.
Marking Information
DZ=YM
DNN
DZ= : Product Code
YMDNN : Date Code
Features
Single-Phase Power Conversion
One Embedded MOSFET Driver with Internal
Bootstrap Diode
VID Table for Intel VR11.1
Continuous Differential Inductor DCR Current Sense
Droop Enable/Disable Capability
Adjustable Soft-Start
Adjustable Frequency Typically at 200kHz
Power Good Indication
Adjustable Over Current Protection
Over Voltage Protection
Over Temperature Protection
Small 24-Lead WQFN Package
RoHS Compliant and Halogen Free
Applications
Atom VCORE Power
Ibexpeak Graphic Power
Low Voltage, High Current DC/DC Converter
Pin Configurations
(TOP VIEW)
24 23 22 21 20 19
VID1 1
18 PGOOD
OCSET 2
17 BOOT
FBRTN 3
SS 4
GND
16 UGATE
15 PHASE
COMP 5
25 14 VCC12
FB 6
13 LGATE
7 8 9 10 11 12
WQFN-24L 4x4
DS8113-02 April 2011
www.richtek.com
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1 Page



RT8113 pdf, ピン配列
RT8113
Functional Pin Description
Pin No.
Pin Name
Pin Function
2
OCSET
Over Current Protection Threshold Set Pin.
3
FBRTN
Return Ground. This pin is Negative Node of the differential Remote Voltage
sending.
4 SS
Soft-Start Ramp Slope Set Pin. Connect this pin to FBRTN by a Capacitor to
Adjust soft-start slew rate.
5
COMP
Compensation Pin. Output of Error Amplifier and Input of PWM comparator.
6 FB
Inverting Input of Error Amplifier.
7 ADJ
Droop Set Pin. Connect a resistor from this pin to GND sets the load line slope.
8 OFS
Voltage Offset Pin. This pin sets No-Load Output Voltage Offset. Connect a
resistor from this Pin to VCC5 or GND to bidirection set the output voltage
no-load offset.
Switching Frequency Set Pin. Connect this pin to GND via a resistor to adjust
9
RT/EN
switching frequency and operate with droop function.
Connect this pin to VCC5 via a resistor to adjust switching frequency and operate
without droop function.
10 VCC5
Internal 5V Regulator Output.
11 ISP
Non-Invertering Input of Current Sense Amplifier.
12 ISN
Invertering Input of Current Sense Amplifier.
13
LGATE
Lower Gate Driver. This pin drives the gate of low side MOSFETs.
14
VCC12
12V Power Supply Input Pin.
15
PHASE
Switch Node of High side Driver. Connect this pin to high-side MOSFETs sources
together with the low side MOSFETs drains and inductor.
16
UGATE
Upper Gate Driver. This pin drives the gate of the high-side MOSFETs.
Bootstrap Power Pin. This pin powers the high-side MOSFETs drivers. Connect
17 BOOT this pin to the junction of the bootstrap capacitor with the cathode of the bootstrap
diode.
18
PGOOD
Power Good Indicator.
19 to 24,1 VID7 to VID1 DAC Voltage Identification Inputs.
25
(Exposed Pad)
GND
Ground Pin. The exposed pad must be soldered to a large PCB and connected to
AGND for maximum power dissipation.
DS8113-02 April 2011
www.richtek.com
3


3Pages


RT8113 電子部品, 半導体
RT8113
VID7
1
1
1
1
1
1
1
1
1
1
1
VID6
0
0
0
0
0
0
0
0
0
0
1
VID5
1
1
1
1
1
1
1
1
1
1
1
Table 1. Output Voltage Program
Pin Name
VID4
VID3
VID2
VID1
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1111
Nominal Output Voltage
DACOUT
0.61250V
0.60000V
0.58750V
0.57500V
0.56250V
0.55000V
0.53750V
0.52500V
0.51250V
0.50000V
OFF
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DS8113-02 April 2011

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