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參數(shù)資料
| 型號： | RT9228 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER |
| 中文描述： | 先進的PWM和雙重線性電源控制器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 164K |
| 代理商： | RT9228 |
RT9228
DS9228-03 July 2001
www.richtek.com
1
Advanced PWM and Dual Linear Power Controller
General Description
The RT9228 is a 3-in-one power controller optimized
for high-performance microprocessor and computer
applications. The IC integrates a synchronous buck
PWM controller, a linear regulator, and a linear
controller as well as monitoring and protection
functions into a 24-pin SOP package. The PWM
controller regulates the microprocessor core voltage.
The linear regulator provides power for the clock
driver circuit and the linear controller regulates power
for the GTL bus.
The RT9228 features an Intel-compatible, TTL 5-bit
programmable DAC that adjusts the core voltage
from 2.1V to 3.5V in 0.1V increments and from 1.3V
to 2.05V in 0.05V steps. The 5-bit DAC has a typical
±
1% tolerance. The linear regulator uses an internal
drive device to provide 2.5V
±
2.5% output voltage.
The linear controller drives an external N-channel
MOSFET or a low cost NPN bipolar transistor to
provide 1.5V
±
2.5%.
The RT9228 monitors all the output voltages. A
Power-good signal is issued when the core voltage is
within
±
10% of the DAC setting and the other levels
are above their under-voltage levels. Additional build-
in over-voltage protection for the core output uses
the lower MOSFET to prevent output voltage above
115% of the DAC setting. The PWM over-current
function monitors the output current using the voltage
drop across the upper MOSFET’s R
DS(ON)
, which
eliminates the need for a current sensing resistor.
Ordering Information
RT9228
Features
z
3-in-one Regulated Voltages for Microprocessor
Core, Clock, and GTL
z
Compatible with HIP6018B
Power-good Output Voltage Monitor
Switching section
z
5-bit DAC Programmable from 1.3V to 3.5V
z
±
1% DAC Accuracy
z
Fast Transient Response
z
Full 0% to 100% Duty Cycle Driver
z
Fixed 200kHz Switching Frequency
z
Adaptive Non-overlapping Gate Driver
z
Over-current Monitor Uses MOSFET R
DS(ON)
z
Over-voltage Protection Uses Lower MOSFET
Linear Section
z
User-adjustable Linear Regulator Output Voltage
z
MOSFET or NPN Driving Capability
z
Ultra Fast Response Speed
z
Under-voltage Protection
z
Internal Thermal Shutdown
Applications
z
Full Motherboard Power Regulation for Computer
z
Low-voltage Distribution Power Supplies
Pin Configurations
Part Number
Pin Configurations
RT9228CS
(Plastic SOP-24)
TOP VIEW
Operating temperature range
C: Commercial standard
Package type
S : SOP-24
1
2
3
4
5
6
7
8
9
10
VID4
VID3
VID2
VID1
VID0
PGOOD
FAULT
SS
NC
FB2
UGATE1
PHASE1
LGATE1
PGND
OCSET1
VSEN1
FB1
NC
FB3
GATE3
GND
VOT2
VCC
VIN2
11
12
13
14
15
16
17
18
19
20
21
22
23
24
相關PDF資料 |
PDF描述 |
|---|---|
| RT9228CS | ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER |
| RT9232-CS | PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V/2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER AND REFERENCE OUTPUT |
| RT9232-MS | PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V/2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER AND REFERENCE OUTPUT |
| RT9232 | PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V/2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER AND REFERENCE OUTPUT |
| RT9237 | MULTI-PHASE DC/DC CONTROLLER FOR CPU CORE POWER SUPPLY |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RT9228_07 | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9228CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER |
| RT9228GS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9228PS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9229 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Advaced Dual PWM and Dual Linear Power Controller |
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