SWITCHING REGULATOR. VT1165M Datasheet

VT1165M REGULATOR. Datasheet pdf. Equivalent

VT1165M Datasheet
Recommendation VT1165M Datasheet
Part VT1165M
Description MULTIPHASE SWITCHING REGULATOR
Feature VT1165M; SENSEVOLTE- RRDAoCNOotNFRIeDpEroNdTIuAcLe SENSE+ Idesbus & Clock Vendor PN:VT1165MFQX PRELIMINARY .
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Datasheet
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Volterra Semiconductor VT1165M
Vendor PN:VT1165MFQX
PRELIMINARY
VT1165M CHIPSET
REVISION - December 8, 2005
PROGRAMMABLE OUTPUT, MULTIPHASE SWITCHING
REGULATOR WITH SMBus
Smart Current Input
Slave™ Rating Voltage
VT1105S* 25A per
VT1125S Phase
10.8V to
VT1115S 30A per 13.2V
VT1135S Phase
Output
Voltage
0.800V
to
1.850V
or
0.450V
to
2.0375V
VID
VRMs 9,
10.X, and
Opteron™ or
Serial VID
(SVID) Mode
GENERAL DESCRIPTION
The VT1165M chipset, Volterra’s fourth-generation chipset,
is a complete, integrated, scalable architecture for the high-
est density multi-phase synchronous buck regulators. This
ultra high density solution minimizes external components
and offers enhanced regulator performance, comprehensive
control and reporting features, ease of design and the smallest
footprint available for demanding multi-phase synchronous
buck converters. The chipset is targeted for applications
such as servers and networking systems.
The VT1165M system architecture consists of a master con-
troller (VT1165M), multiple Smart Slave™ integrated output
devices, input capacitors, output capacitors and output induc-
tors. The actual number of Smart Slaves™ can be set by the
designer and application requirements. The desired slave
and load operating conditions are controlled and monitored
via an interconnecting digital bus as shown in Figure 1.
With this chipset, Volterra implements enhancements to
the digital SMBus interface for monitoring and controlling
of the voltage regulator. Regulator parameters can be set and
monitored via the two-way SMBus for control, protection and
shutdown of the regulator. The SMBus can provide a reading
of faults such as VX short-circuit or slave over-temperature,
so that the regulator can be controlled and protected dur-
ing all operating conditions. The SMBus can also provide
temperature readings of individual slaves.
A key benefit of the VT1165M is that it provides excellent
scalability. This flexibility allows the designer to trade-off cost
and performance for a given application using one VT1165M
controller and different slave configurations with no redesign
or re-layout. The number of phases can be determined by
the designer and easily populated or de-populated to meet
different load and performance targets.
KEY FEATURES
Smallest Footprint: Typical Solution Occupies Less
than 1600mm2 in a 150A VRM Application
Lowest Profile: 5mm Maximum Height
Highest Accuracy Current Sharing
Differential Voltage Sense at Point of Load
1A/ns Step Load Transient Response
Scalable Output Current: Up to 8 Slaves
Slave Temperature Reporting
Compatible with Coupled Inductors
Programmable Switching Frequency: 500kHz-
1.5MHz
6-Bit VID Input, with 12.5mV Steps and Setpoint
Trim for Programmable VOUT
– Intel® VRM 9: 1.100V-1.850V
– Intel® VRM 10.X: 0.8375V-1.6000V
– AMD® Opteron™: 0.800V-1.550V
– Serial VID (SVID) Mode: 0.450V-2.0375V
Dynamic VID
Programmable VID via SMBUS
Programmable Setpoint and Droop
Programmable OVP, OVLO and UVLO
Cycle-by-Cycle Current Limiting
Power Good Flag, Fault Flag and Output Enable
SYSTEMS
Servers and Workstations
Enterprise Storage
Broadband Communication & Networking
Small Form Factor Desktops
APPLICATIONS
Voltage Regulator Modules (VRMs) and On-Board
Regulators (VR Down)
Microprocessors (µP): 32 and 64 Bit I/A and RISC
Architectures
Memory
Graphics Processors
Network, Chipset ICs
BASIC APPLICATION CIRCUIT
3.3V
SMBus
VT1165M
Master
Digital
Control Bus
3.3V 12V
VT11x5S VX1
Slave 1
LOUT1
3.3V 12V
VT11x5S VX2
Slave 2
LOUT2
COUT
VOUT
*NOTE: The VT1165M, VT1115S, VT1125S & VT1135S have
a status of PRELIMINARY. The VT1105S has a
status of NEW PRODUCT. See the back page of
this datasheet for details on these statuses.
Volterra Semiconductor Corp. Proprietary. Do Not Copy. Do Not Distribute.
3.3V 12V
VT11x5S VXN
Slave N
LOUTN
Figure 1. VT1165M System Architecture
1



Volterra Semiconductor VT1165M
VT1165M CHIPSET PRELIMINARY
PROPRIETARY AND CONFIDENTIAL
PROGRAMMABLE OUTPUT, MULTIPHASE SWITCHING REGULATOR WITH SMBus
ORDERING INFORMATION
Part Number
IC Package Style
VT1165MQ
VT1165MQX
Master
QFN-40
VT1105SCR
VT1105SCX
25A Smart
Slave™
CSP-52
VT1115SCR
VT1115SCX
30A Smart
Slave™
CSP-53
VT1125SCR
VT1125SCX
25A Smart
Slave™
CSP-69
VT1135SCR
VT1135SCX
30A Smart
Slave™
CSP-41
Lead-Free Options (RoHS Compliant)
VT1165MFQ
VT1165MFQX
Master
QFN-40
VT1105SFCR
VT1105SFCX
25A Smart
Slave™
CSP-52
VT1115SFCR
VT1115SFCX
30A Smart
Slave™
CSP-53
VT1125SFCR
VT1125SFCX
25A Smart
Slave™
CSP-69
VT1135SFCR
VT1135SFCX
30A Smart
Slave™
CSP-41
Drawing Number
ES AP-0906
ES AP-0588
ES AP-1088
ES AP-0760
ES AP-0804
ES AP-0906
ES AP-0588
ES AP-1088
ES AP-0760
ES AP-0804
Shipment Method
Trays
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
Trays
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
250u Tape & Reel
2.5ku Tape & Reel
Package Marking
VT1165M
VT1105S
VT1115S
VT1125S
VT1135S
VT1165MF
VT1105SF
VT1115SF
VT1125SF
VT1135SF
ABSOLUTE MAXIMUM RATINGS (SEE NOTE 1)
THERMAL RATINGS
Supply Voltage (12V)........................................-0.3V to 16V
Supply & Input Pin Voltages (3.3V) ................... -0.3V to 4V
VT1165M SC and SD Pin Voltages ................... -0.3V to 7V
Junction Temperature (TJ)......................................... 150°C
Storage Temperature Range .........................-65° to 150°C
Peak Reflow Temperature Eutectic ........................... 245°C
Peak Reflow Temperature Lead-Free ....................... 260°C
OPERATING RATINGS
ΘJC Max (QFN-40) ............................................... 14.8°C/W
ΘJC Max (CSP-41)..................................................0.6°C/W
ΘJC Max (CSP-52) .................................................0.5°C/W
ΘJC Max (CSP-53) .................................................0.5°C/W
ΘJC Max (CSP-69) .................................................0.3°C/W
ΘJA2 Typ (CSP-41)................................................... 21°C/W
ΘJA2 Typ (CSP-52) ..................................................19°C/W
ΘJA2 Typ (CSP-53) ..................................................19°C/W
ΘJA2 Typ (CSP-69) .................................................. 17°C/W
Input 3.3V Voltages (Master &Slave) ...............................................................................................................2.97V to 3.63V
Slave 12V Supply ............................................................................................................................................. 10.8V to 13.2V
Junction Temperature (TJ) Master & Slave............................................................................................................ 0° to 125°C
Frequency (Fsw) ........................................................................................................................................500kHz to 1.5MHz
Design Guideline for Maximum Slave DC Output Current (VT1105S, VT1125S) ............................................................. 25A
Design Guideline for Maximum Slave DC Output Current (VT1115S, VT1135S) ............................................................. 30A
Electrical DC Current Limit Per Slave Assuming No Thermal Limitations (VT1105S, VT1125S) ...................................... 30A
Electrical DC Current Limit Per Slave Assuming No Thermal Limitations (VT1115S, VT1135S) ...................................... 36A
Peak Instantaneous Slave Current (VT1105S, VT1125S) ..................................................................................................... 56A
Peak Instantaneous Slave Current (VT1115S, VT1135S) ............................................................................................................. 63A
NOTE 1: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
NOTE 2: Data taken with Volterra's evaluation kit.
2 Volterra Semiconductor Corp. Proprietary. Do Not Copy. Do Not Distribute.
REVISED - 12/08/05



Volterra Semiconductor VT1165M
PROPRIETARY AND CONFIDENTIAL
PRELIMINARY VT1165M CHIPSET
PROGRAMMABLE OUTPUT, MULTIPHASE SWITCHING REGULATOR WITH SMBus
ELECTRICAL CHARACTERISTICS
VDD-M = VDD-S = VCC-S = 3.3V ±10%, VDD-H = 10.8V to 13.2V unless otherwise specified. The symbol denotes speci-
fications which apply over the following operating junction temperature ranges (TJ-SLAVE = 0 to 125°C and TJ-MASTER
= 0 to 100°C), otherwise specifications are for TJ = 25°C. The # denotes parameters that are programmable.
Symbol
Parameter
Conditions
Min Typ Max Units
Supply Voltages, VDD and VCC
VDD-M
Supply Voltage Range (Master)
2.97 3.3 3.63 V
VDD-S,
VCC-S
Supply Voltage Range (Slave 3.3V)
2.97 3.3 3.63 V
VDDH
IDD-M
Supply Voltage Range (Slave 12V)
Supply Current (Master)
PWM
Shutdown, OE = 0
10.8 12.0 13.2
13
10
V
mA
mA
IDD-S,
ICC-S
Supply Current (Slave 3.3V)
VT1105S PWM
Shutdown
VT1115S PWM
45 mA
20 mA
25 mA
Shutdown
20 mA
VT1125S PWM
55 mA
Shutdown
20 mA
VT1135S PWM
25 mA
Shutdown
20 mA
IDDH
Quiescent Supply Current
VT1105S
(Slave 12V)
VT1115S
1 mA
2 mA
VT1125S
1 mA
VT1135S
2 mA
Output Voltage and DC Accuracy
VOUT
Output Voltage Range
ERRORMASTER-REF DC Setpoint Accuracy (including
voltage reference and master
amplifier)
VRM 9 VID Code
VRM 10.X VID Code
OpteronTM VID Code
Full VID Range:
The Greater of
1.100
0.8375
0.800
-6
or
-0.8
1.850
1.6000
1.550
+9
or
0.8
V
V
V
mV
%
Regulation and System Specifications (Specified by design, tested using circuits in Figures 5 & 6)
VOUT
Line Regulation
VDDH-S12V = 12V ±10%
5 mV
Output Ripple
10 mV
SROUT
Output Slew Rate
1000
A/µs
TTURN-ON
Turn-On Response Time. Time to
VOUT > 95% of Final Value.
From VDD-M > UVLO
(8 slaves, IMAX = 28A,
800kHz, 300µF/slave,
4.6
5.4 ms
CNOM = 6.8nF). Includes
configuration time.
From OE Positive Edge
0 100 200 µs
(8 slaves, IMAX = 28A,
800kHz, 300µF/slave,
CNOM = 6.8nF)
VOVERSHOOT
Turn-On Overshoot
Built in Soft Start
0%
VUNDERSHOOT
Turn-Off Undershoot
30Load
0 mV
CMRRSENSE
Common-Mode Rejection Ratio of
Differential Sense
40 dB
ISENSE
SENSE Pin Currents
SENSE+ Sinking,
SENSE- Sourcing
60 100 µA
REVISED - 12/08/05
Volterra Semiconductor Corp. Proprietary. Do Not Copy. Do Not Distribute. 3







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