http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




  ON Semiconductor Electronic Components Datasheet  

ADP3207 Datasheet

7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller

No Preview Available !

ADP3207 pdf
7-Bit Programmable Multiphase Mobile
CPU Synchronous Buck Controller
ADP3207
FEATURES
1-, 2-, or 3-phase operation at up to 750 kHz per phase
±8 mV worst-case differential sensing error over
temperature
Interleaved PWM outputs for driving external high power
MOSFET drivers
Automatic power-saving modes maximize efficiency during
light load and deeper sleep operation
Soft transient control reduces inrush current and audio noise
Active current balancing between output phases
Independent current limit and load line setting inputs for
additional design flexibility
Built-in power-good masking supports VID on-the-fly
7-bit digitally programmable 0.3 V to 1.5 V output
Overload and short-circuit protection with programmable
latch-off delay
Built-in clock enable output delays CPU clock until CPU
supply voltage stabilizes
APPLICATIONS
Notebook power supplies for next generation Intel®
processors
GENERAL DESCRIPTION
The ADP32071 is a high efficiency, multiphase, synchronous,
buck-switching regulator controller optimized for converting
notebook battery voltage into the core supply voltage required
by high performance Intel processors. The part uses an internal
7-bit DAC to read voltage identification (VID) code directly
from the processor that sets the output voltage. The phase
relationship of the output signals can be programmed to
provide 1-, 2-, or 3-phase operation, allowing for the
construction of up to three interleaved buck-switching stages.
The ADP3207 uses a multimode architecture to drive the logic-
level PWM outputs at a programmable switching frequency that
can be optimized depending on the output current requirement.
The part switches between multiphase and single-phase operation
to maximize its effectiveness under all load conditions. In addition,
the ADP3207 includes a programmable slope function to adjust
the output voltage as a function of the load current. As a result,
it is always best positioned for a system transient.
1 Patent 6,683,441.
FUNCTIONAL BLOCK DIAGRAM
EN 1
GND 20
TTSENSE 30
VRTT 29
VCC VRPM RRPM RT RAMPADJ
31 12
UVLO
SHUTDOWN
AND BIAS
THERMAL
THROTTLING
CONTROL
13 14
15
OSCILLATOR
CURRENT
BALANCING
CIRCUIT
ADP3207
+
CMP
SET EN
RESET
1/2/3 – PHASE
DRIVER
+
CMP
LOGIC
RESET
26 PWM1
25 PWM2
1.7V
CSREF
+
CMP
RESET
CROWBAR
24 PWM3
DAC + 200mV
CSREF
DAC – 300mV
PGDELAY 3
+
PWRGD 2
DELAY
CURRENT LIMIT
23 SW1
22 SW2
21 SW3
19 CSCOMP
ILIMIT 11
CURRENT
LIMIT
CIRCUIT
18 CSSUM
17 CSREF
CLKEN 4
SOFT
START
COMP 7
6 FB
+ 16 LLSET
33 DPRSTP
SOFT START/
BOOT/
DEEPER
SLEEP
CONTROL
32 PSI
10 DPRSLP
9 STSET
28 DCM
PRECISION
REFERENCE
VID
DAC
27 OD
8 SS
5 34 35 36 37 38 39 40
Figure 1.
The chip also provides accurate and reliable short-circuit
protection, adjustable current limiting, and a delayed power-
good output that accommodates on-the-fly output voltage
changes requested by the CPU.
The ADP3207 is specified over the extended commercial
temperature range of 0°C to 100°C and is available in a 40-lead
LFCSP package.
©2008 SCILLC. All rights reserved.
February 2008 – Rev. 1
Publication Order Number:
ADP3207/D


  ON Semiconductor Electronic Components Datasheet  

ADP3207 Datasheet

7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller

No Preview Available !

ADP3207 pdf
ADP3207
TABLE OF CONTENTS
Features...............................................................................................1
Applications .......................................................................................1
General Description..........................................................................1
Functional Block Diagram...............................................................1
Revision History................................................................................2
Specifications .....................................................................................3
Test Circuits .......................................................................................6
Absolute Maximum Ratings ............................................................7
ESD Caution ..................................................................................7
Pin Configuration and Function Descriptions .............................8
Typical Performance Characteristics............................................10
Theory of Operation.......................................................................11
Number of Phases .......................................................................11
Operation Modes ........................................................................11
Switch Frequency Setting...........................................................12
Output Voltage Differential Sensing ........................................12
Output Current Sensing .............................................................12
Active Impedance Control Mode .............................................13
Current Control Mode and Thermal Balance.........................13
Voltage Control Mode ................................................................13
Power-Good Monitoring ...........................................................13
Power-Up Sequence and Soft Start ...........................................14
Soft Transient...............................................................................14
Current-Limit, Short-Circuit, and Latch-Off Protection ......15
Changing VID on-the-Fly .........................................................15
REVISION HISTORY
02/08—Rev 1: Conversion to ON Semiconductor
1/06—Revision 0: Initial Version
Output Crowbar..........................................................................15
Reverse Voltage Protection........................................................16
Output Enable and UVLO.........................................................16
Thermal Throttling Control......................................................16
Application Information ................................................................19
Setting the Clock Frequency for PWM Mode ........................19
Soft-Start and Current-Limit Latch-Off Delay Times ...........19
PWRGD Delay Timer ................................................................19
Inductor Selection.......................................................................19
COUT Selection..............................................................................21
Power MOSFETs .........................................................................22
Ramp Resistor Selection ............................................................23
Setting the Switching Frequency for RPM Mode Operation of
Phase 1..........................................................................................23
Current-Limit Setpoint ..............................................................24
Feedback Loop Compensation Design ....................................24
CIN Selection and Input Current DI/DT Reduction.................25
Soft Transient Setting .................................................................25
Selecting Thermal Monitor Components................................25
Tuning Procedure for ADP3207 ...............................................25
Layout and Component Placement..........................................27
Outline Dimensions........................................................................29
Ordering Guide ...........................................................................29
Rev. 1 | Page 2 of 29 | www.onsemi.com


Part Number ADP3207
Description 7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller
Maker ON Semiconductor
Total Page 29 Pages
PDF Download
ADP3207 pdf
Download PDF File
ADP3207 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 ADP320 High PSRR Voltage Regulator Analog Devices
Analog Devices
ADP320 pdf
2 ADP3203 2-Phase IMVP-II & IMVP-III Core Controller for Mobile CPUs Analog Devices
Analog Devices
ADP3203 pdf
3 ADP3204 3-Phase IMVP-II and IMVP-III Core Controller for Mobile CPUs Analog Devices
Analog Devices
ADP3204 pdf
4 ADP3205 Multiphase IMVP-IV Core Controller Analog Devices
Analog Devices
ADP3205 pdf
5 ADP3206 2-/3-/4-Phase Synchronous Buck Controller Analog Devices
Analog Devices
ADP3206 pdf
6 ADP3207 7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller ANALOG DEVICES
ANALOG DEVICES
ADP3207 pdf
7 ADP3207 7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller ON Semiconductor
ON Semiconductor
ADP3207 pdf
8 ADP3207C CPU Synchronous Buck Controller ON Semiconductor
ON Semiconductor
ADP3207C pdf
9 ADP3207D 7-Bit Programmable Multi-Phase Mobile CPU Synchronous Buck Controller ON Semiconductor
ON Semiconductor
ADP3207D pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components