RT9241B Datasheet PDF - RichTek Technology
Part Number | RT9241B | |
Description | (RT9241A/B) 2-Phase DC/DC Controller | |
Manufacturers | RichTek Technology | |
Logo | ||
There is a preview and RT9241B download ( pdf file ) link at the bottom of this page. Total 18 Pages |
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RT9241A/B
Two-Phase DC/DC Controller for CPU Core Power Supply
General Description
The RT9241A/B is a two-phase buck DC/DC
controller integrated with all control functions for high
performance processor VRM. The RT9241A/B
drives 2 buck switching stages operating in 180
degree phase shift. The two-phase architecture
provides high output current while maintaining low
power dissipation on power devices and low stress
on input and output capacitors. The high equivalent
operating frequency also reduces the component
dimension and the output voltage ripple in load
transient.
RT9241A/B regulates both easily set voltage and
current loops. Precise current sharing for power stage
is achieved by differential input current sense and
processing circuit. The settings of current sense,
droop tuning and over current protection are
independent to compensation circuit of voltage loop.
The feature greatly facilitates the flexibility of CPU
power supply design and tuning.
The RT9241A/B uses a 5-bit DAC of 1.1V to 1.85V
(25mV/step) output with load current droop
compensation to meet the strict VRM transient
requirement. The IC monitors the VCORE voltage for
PGOOD and over voltage protection. Soft start, over
current protection and programmable under voltage
lockout are also provided to assure the safety of
microprocessor and power system.
Ordering Information
RT9241A/B
Package type
S : SOP-20
Operating temperature range
C: Commercial standard
Operating frequency version
A : 200KHz
B : 100KHz
Features
Two-Phase Power Conversion
VRM 9.0 DAC Output with Active Droop
Compensation for Fast Load Transient
Precise Channel Current Sharing with
Differential Sense Input
Hiccup Mode Over Current Protection
Programmable Under Voltage Lockout and Soft
Start
High Ripple Frequency, (Channel Frequency
Times Channel Number)
100KHz Version (RT9241B) for Lower Switching
Loss
Applications
Power Supply for Server and Workstation
Power Supply for High Current Microprocessor
Pin Configurations
Part Number
Pin Configurations
RT9241A/B CS
(Plastic SOP-20) VID4 1
VID3 2
VID2 3
VID1 4
VID0 5
COMP 6
FB 7
ADJ 8
DVD 9
SS 10
TOP VIEW
20 VDD
19 PGOOD
18 ISP1
17 PWM1
16 PWM2
15 ISP2
14 VSEN
13 GND
12 ISN1
11 ISN2
DS9241AB-01 October 2002
www.richtek.com
1
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www.DataSheet4U.com
Typical Application Circuit
RT9241A/B
DS9241AB-01 October 2002
www.richtek.com
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for RT9241B electronic component. |
Information | Total 18 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ RT9241B.PDF Datasheet ] |
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Featured Datasheets
Part Number | Description | MFRS |
RT9241 | The function is Two-Phase DC/DC Controller for CPU Core Power Supply. ETC | |
RT9241A | The function is (RT9241A/B) 2-Phase DC/DC Controller. RichTek Technology | |
RT9241B | The function is (RT9241A/B) 2-Phase DC/DC Controller. RichTek Technology | |
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