ISL6530 Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination
dual DC-DC converters optimized for high-performance
DDRAM memory applications. It is designed to drive low
cost N-channel MOSFETs in synchronous-rectified buck
topology to efficiently generate 2.5V VDDQ for powering
DDRAM memory, VREF for DDRAM differential signalling,
and VTT for signal termination. The ISL6530 integrates all of
the control, output adjustment, monitoring and protection
functions into a single package.
The VDDQ output of the converter is maintained at 2.5V
through an integrated precision voltage reference. The VREF
output is precisely regulated to 1/2 the memory power
supply, with a maximum tolerance of 1% over temperature
and line voltage variations. VTT accurately tracks VREF.
During V2_SD sleep mode, the VTT output is maintained by
a low power window regulator.
The ISL6530 provides simple, single feedback loop, voltagemode
control with fast transient response. It includes two
phase-locked 300kHz triangle-wave oscillators which are
displaced 90o to minimize interference between the two
PWM regulators. The regulators feature error amplifiers with
a 15MHz gain-bandwidth product and 6V/s slew rate which
enables high converter bandwidth for fast transient
performance. The resulting PWM duty ratio ranges from 0%
to 100%.
The ISL6530 protects against over-current conditions by
inhibiting PWM operation. The ISL6530 monitors the current
in the VDDQ regulator by using the rDS(ON) of the upper
MOSFET which eliminates the need for a current sensing
resistor.
|
ISL6530 、 ISL6530CB* 、 ISL6530CBZ* 、 ISL6530CR* 、 ISL6530CRZ* 、 ISL6530EVAL1 、 2 、 ISL6530EVAL2 、 ISL6530CB 、 ISL6530CBZ 、 ISL6530CR 、 ISL6530CRZ |
|
|
Evaluation Board 、 Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller |
|
|
[ VDDQ, VTT, and VREF regulation for DDRAM memory systems ][ Main Memory in AMD® Athlon™ and K8™, Pentium® III, Pentium IV, Transmeta, PowerPC™, AlphaPC™, and UltraSparc® based computer systems ][ Video memory in graphics systems PART NUMBER ][ High-power tracking DC-DC regulators ] |
|
|
Datasheet |
|
|
ESD 、 IPC/JEDEC J STD-020 、 ISO9001 、 Pb-free 、 RoHS |
|
Please see the document for details |
|
|
|
|
|
|
|
|
24 Lead SOIC;32 Lead 5x5 QFN |
|
|
English Chinese Chinese and English Japanese |
|
|
Nov 15, 2004 |
|
|
Rev 2.00 |
|
|
FN9052 |
|
|
1.6 MB |
- +1 Like
- Add to Favorites
Recommend
- Renesas DSP Solution on Renesas Lab on the Cloud, Input Analog Signals Directly From A Signal Generator To The Rx231 Microcontroller Evaluation Board
- Renesas‘ Semiconductor Manufacturing Factory (Naka Factory) Fire: Production Capacity Has Recovered to 88%
- Renesas Announces 10 New Winning Combinations Integrating Celeno and Renesas Products
- Renesas ＆ Altran to Deploy First Social Distancing Wristwatch Using Ultra-Wideband Chipset with Low Rate Pulse
- Renesas and FAW Establish Joint Laboratory to Accelerate Development of Next-Generation Smart Vehicles
- Renesas Semiconductor Manufacturing Factory (Naka Factory)‘ Production Level Has Returned to 100%
- Renesas and Sequans Expand Their 5G Collaboration including Broadband IoT Module for 5G NR FR1/FR2
- Renesas and Cyberon Partner to Deliver Integrated Voice User Interface Solutions for Renesas RA MCUs Supporting Over 40 Global Languages
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
