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CS5308 数据表(PDF) 1 Page - ON Semiconductor

部件名 CS5308
功能描述  Two?뭁hase PWM Controller with Integrated Gate Drivers for VRM 8.5
Download  31 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

CS5308 数据表(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 6
1
Publication Order Number:
CS5308/D
CS5308
Two−Phase PWM Controller
with Integrated Gate
Drivers for VRM 8.5
The CS5308 is a second−generation, two−phase step down
controller that incorporates all control functions required to power
next generation processors. Proprietary multi−phase architecture
guarantees balanced load current distribution and reduces overall
solution cost in high current applications. Enhanced V2™ control
architecture provides the fastest possible transient response, excellent
overall regulation, and ease of use. The CS5308 is a second generation
PWM controller because it optimizes transient response by combining
traditional Enhanced V2 with an internal PWM ramp and
fast−feedback directly from VCORE to the internal PWM comparator.
These enhancements provide greater design flexibility, facilitate use
and reduce output voltage jitter.
The multi−phase architecture reduces input and output filter ripple,
allowing for a significant reduction in filter size and inductor values
with a corresponding increase in the output inductor current slew rate.
This approach allows a considerable reduction in input and output
capacitor requirements, as well as reducing overall solution size and
cost.
The CS5308 includes VTT monitoring and timing, VTT Power
Good (VTTPGD), Power Good (PWRGD), and internal MOSFET gate
drivers to provide a “fully integrated solution” to simplify design,
minimize circuit board area, and reduce overall system cost.
Features
Enhanced V2 Control Method
Internal PWM Ramp
Fast−Feedback Directly from VCORE
5−Bit DAC with 1% Tolerance
Adjustable Output Voltage Positioning
200 kHz to 800 kHz Operation Set by Resistor
Current Sensed through Sense Resistors or Output Inductors
Adjustable Hiccup Mode Current Limit
Overvoltage Protection through Synchronous MOSFETs
Individual Current Limits for Each Phase
On−Board Current Share Amplifiers
3.3 V, 1.0 mA Reference Output
VTT Monitoring and VTT Power Good (VTTPGD)
VCORE Power Good
On/Off Control (through COMP Pin)
Improved Noise Immunity
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
CS5308GDW28
SO−28L
27 Units/Rail
CS5308GDWR28
SO−28L 1000 Tape & Reel
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
SO−28L
DW SUFFIX
CASE 751F
MARKING
DIAGRAM
1
CS5308
AWLYYWW
28
1
28
PIN CONNECTIONS
1
28
VCCL12
VID1
PGND
VID0
GATE(L)1
VID25
GATE(H)1
ILIM
VCCH1
REF
VCCL
VDRP
LGND
VFB
ROSC
COMP
GATE(L)2
VID2
GATE(H)2
VID3
VTTPGD
CSREF
VCCH2
PWRGD
VTTCT
CS1
VTT
CS2


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