SMM605 SUMMIT Microelectronics, Inc:, SMM605 Datasheet

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SMM605

Manufacturer Part Number
SMM605
Description
Six-channel Supply Voltage Marginer And Active Dc Output Controller
Manufacturer
SUMMIT Microelectronics, Inc:
Datasheet
Figure 1 – Applications Schematic using the SMM605 Controller to actively control and margin the output
levels of up to six DC/DC Converters.
Six-Channel Supply Voltage Marginer and Active DC Output Controller (ADOC
SIMPLIFIED APPLICATIONS DRAWING
FEATURES & APPLICATIONS
• Extremely accurate (0.2%, typ.) Active DC Output
• Six-channel control of DC/DC converters
• ADOC Automatically adjusts supply output
• Capable of margining supplies with trim inputs
• Wide Margin/ADOC range from 0.35V to VDD
• Uses either an internal or external VREF
• Operates from any intermediate bus supply
• Programmable START and READY pins
• General Purpose 4k EEPROM with Write Protect
• I
• 48-lead TQFP package
Applications
• Monitor/Control Distributed and POL Supplies
• Multi-voltage Processors, DSPs, ASICs used in
© SUMMIT Microelectronics, Inc. 2003
voltage level under all DC load conditions
Telecom, CompactPCI or server systems
using either positive or negative trim pin control
configuration and monitoring status.
from 6V to 14V and from 2.7V to 5.5V
2
Control
C 2-wire serial bus for programming
3.3VIN (+2.7V to +5.5V Range)
12VIN (+6V to +14V Range)
POWER GOOD
REFERENCE
External or
Internal
Note: This is an applications example only. Some pins, components and values are not shown.
BUS
I
2
C
SDA
SCL
A2
VDD_CAP
VREF_CNTL
SMM605
• 757 N. Mary Avenue • Sunnyvale CA 94085 •
TRIM_CAP
TRIM_CAP
http://www.summitmicro.com
TRIM
TRIM
CAP
CAP
VM
VM
2064 1.2 09/20/06
A
A
A
A
B
B
B
B
2 of 6 DC-DC
Converters shown
INTRODUCTION
The SMM605 actively controls the output voltage level
of up to six DC/DC converters that use a ‘Trim’ or
‘VADJ/FB’ pin to adjust the output. An Active DC
Output Control (ADOC
operation to maintain extremely accurate settings of
supply voltages and, during system test, to control
margining of the supplies using the industry standard
I
±0.1% external reference is ±0.2%, and ±0.5% using
the internal reference. The device can margin supplies
with either positive or negative trim pin control within a
range of 0.35V to VDD. The SMM605 supply can range
from 2.7V to 5.5V or 6V to 14V to accommodate any
intermediate bus supply.
are programmed into nonvolatile memory. The I
is used to enable margin high, margin low, ADOC or
normal operation. When margining, the SMM605 will
check the voltage output of the converter and make
adjustments to the trim pin via a feedback loop to bring
the voltage to the margin setting. A margining status
register is set to indicate that the system is ready for
test.
2
C 2-wire data bus commands. Total accuracy with a
The voltage settings (margin high/low and nominal)
HEALTHY
TRIM
TRIM
VIN
VIN
Converter B
Converter A
DC/DC
DC/DC
Converter C, E
Converter D, F
Vout
DC/DC
Vout
DC/DC
Preliminary Information
TM
) feature is used during normal
Phone 408 523-1000 • FAX 408 523-1266
2.5VIN
1.2VIN
12V
3.3V
RESET
READY
ASIC
µP/
TM
SMM605
)
1
(See Last Page)
2
C bus
1

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SMM605 Summary of contents

Page 1

... VREF_CNTL REFERENCE POWER GOOD Figure 1 – Applications Schematic using the SMM605 Controller to actively control and margin the output levels six DC/DC Converters. Note: This is an applications example only. Some pins, components and values are not shown. © SUMMIT Microelectronics, Inc. 2003 ...

Page 2

... Figure 2 – Example Power Supply Margining using the SMM605. The waveform on the left is margin low to high from 1.6V to 2.0V and the waveform on the right is margin high to nominal from 2.0V to 1.8V. The ADOC function guarantees the output level to be within ±0.2% maximum with a ±0.1% external reference. The bottom waveform is the READY signal indicating margin is complete ...

Page 3

... INTERNAL FUNCTIONAL BLOCK DIAGRAM Level VREF_CNTL Vout Shift START READY CONTROL A2 LOGIC SDA SCL EE Memory Figure 3 –SMM605 Internal Functional Block Diagram. Summit Microelectronics, Inc 12VIN VDD 3.6V or Power 5.5V Supply Regulator Arbitrator V+ Output V- 1:6 MUX Control Input Voltage Sensing and Signal Conditioning FILT_CAP 2064 1.2 09/20/06 ...

Page 4

... External capacitor input used to filter the internal supply rail. 12V power supply input internally regulated to 3.6 or 5.5V. Input range 14V using the 3.6V internal regulator setting and 10V to 14V using the 5.5V internal regulator setting. 2.7V to 5.5V Power supply of the part. Ground of the part. 2064 1.2 09/20/06 SMM605 Preliminary Information Pin Description 4 ...

Page 5

... I C clock line. The address pin is biased either to VDD_CAP or GND. communicating with the SMM605 over the 2-wire bus A2 provides a mechanism for assigning a unique bus address. Programmable active high/low input. The START input is used solely for enabling Active Control and/or margining. Programmable active high/low open drain output signals indicating when all programmed power supplies have reached their preprogrammed setpoints ...

Page 6

... All TRIM pins floating, VDD floating TRIM Sourcing Maximum Current TRIM Sinking Maximum Current Depends on Trim range of DC-DC Converter Internally regulated to 3.6V Internally regulated to 5.5V No voltage on 12VIN VDD = 2.7V 2 VDD = 5.0V VDD = 2.7V 2 VDD = 5.0V 2064 1.2 09/20/06 SMM605 Preliminary Information ° +85 ° (Commercial) ............– +70 1 ............................ 6.0V to 14. C/W Min Typ Max 2.7 5.5 ...

Page 7

... Total PUPx I = SINK ≤ 3.5V 6mA, V SENSE External V =1.25V, REF ±0.1%, Total PUPx I = SINK > 3.5V 6mA, V SENSE Internal V =1.25V REF VDD_CAP Rising 4 VDD_CAP Falling VDD = 2.7V to 5.5V, Internal Reg = 3.6V or 5.5V 2064 1.2 09/20/06 SMM605 Preliminary Information Min Typ. Max Unit 0.7 x VDD_CAP 0.7 x VDD_CAP 0.3 x VDD_CAP 0.3 x VDD_CAP 0 1 1.0 +0.35 VDD_CAP ...

Page 8

... Update period for Active DC Control of channels A – 10% change in voltage with 0.1% ripple Slow Margin, ±10% change in voltage with 0.1% ripple, TRIM_CAP=1µF ± 5% Fast Margin, ±10% change in voltage with 0.1% ripple, TRIM_CAP=1µF 2064 1.2 09/20/06 SMM605 Preliminary Information Min Typ Max Unit 1.7 ms 100 ms 850 ...

Page 9

... SCL low to valid 0.2 SDA (cycle n) SCL low (cycle n+1) 0.2 to SDA change Note 5 Note 5 250 0 Noise suppression HIGH LOW HD:DAT SU:DAT HD:SDA t DH 2064 1.2 09/20/06 SMM605 Preliminary Information 100kHz 400kHz Typ Max Min Typ Max 100 0 400 1.3 0.6 1.3 0.6 0.6 0.6 3.5 0.2 0.9 0.2 1000 1000 300 300 ...

Page 10

... APPLICATIONS INFORMATION DEVICE OPERATION POWER SUPPLY The SMM605 can be powered by either 14V input through the 12VIN pin 2.7V to 5.5V input through the VDD pin (Figure 3). The 12VIN pin feeds an internal programmable regulator that internally generates either 5.5V or 3.6V. The internal regulator must be set to 3.6V if using an 8V supply. A voltage ...

Page 11

... Ch 3 (500mV/Div) = 1.8V DC-DC converter output (Purple trace (500mV/Div) = 1.5V DC-DC converter output (Green trace) Summit Microelectronics, Inc WRITE PROTECTION Write protection for the SMM605 is located in a volatile register where the power-on state is defaulted to write protect. There are separate write protect modes for the configuration registers and memory. In order to remove write protection, the code 55 the write protection register ...

Page 12

... Rsrv10 J1 Figure 7 – SMM605 Applications schematic. The accuracy of the external (U4) or internal reference sets the accuracy of the ADOC function. Total accuracy with a ±0.1% external reference is ±0.2% and ±0.5% with the internal reference. The 12V supply can go as low the internal regulator is set to 3.6V. ...

Page 13

... Rsrv10 SMX3200 I2C Programming Connector 10 pin Header R1 and R2 need only be placed once on the I2C bus Figure 8 – SMM605 Applications schematic for an adjustable switching regulator (Full regulator circuit not shown). Summit Microelectronics, Inc C3 0.1uF C1 should be as close to the SMM105 as possible C1 1uF ...

Page 14

... APPLICATIONS INFORMATION (CONTINUED) Summit Microelectronics, Inc Figure 9 – SMM605 Applications schematic. 2064 1.2 09/20/06 SMM605 Preliminary Information 14 ...

Page 15

... SDA 2 1 SCL 2 C serial bus connections to program the SMM605. The SMM605 has a 2064 1.2 09/20/06 SMM605 Preliminary Information 2 C serial bus format so that it can be directly An example of the connection This will ensure proper device Pin 10, Reserved Pin 9, 5V Pin 8, Reserved ...

Page 16

... READ The address pointer for the configuration registers, memory, command and status registers must be set before data can be read from the SMM605. This is accomplished by issuing a dummy write command, which is simply a write command that is not followed by a Stop condition. The dummy write command sets the address from which data is read ...

Page 17

... Command and Status Registers, Two Configuration Registers 2-k Bits of General-Purpose Memory 2-k Bits of General-Purpose Memory Configuration Registers Table 1 - Address bytes used by the SMM605. 2064 1.2 09/20/06 SMM605 Preliminary Information or 1011 BIN BIN for the first 2k-bits and 01 for the second BIN BIN . ...

Page 18

... C K Data ( Data (16 SMM605 ...

Page 19

... K K Write BIN Bus Address Data ( Read BIN SMM605 ...

Page 20

... Bus Address Data ( SMM605 ...

Page 21

... Bus Address Data ( SMM605 ...

Page 22

... R0E 04 R0F 01 RC1 The default device ordering number is SMM605FC-186, is programmed as described above and tested over the commercial temperature range. Application Note 40 contains a complete description of the Windows GUI and the default settings of each of the 48 individual Configuration Registers. Summit Microelectronics, Inc Register Contents ...

Page 23

... BSC 0.276 (7.00) Pin 1 Indicator A Summit Microelectronics, Inc 48 PIN TQ FP PACKAGE (A) BSC (B) (B) (A) Ref Jedec M S-026 0.037 - 0.041 0.95 - 1.05 0.047 MAX. (1.2) B 2064 1.2 09/20/06 SMM605 Preliminary Information Inches (Millimeters) 0.02 BSC (0.5) 0.007 - 0.011 (0.17 - 0.27) DETAIL "A" 0.039 (1.00 Min Max 0.002 - 0.006 (0.05-0.15) 0.018 - 0.030 (0.45 - 0.75) DETAIL " ...

Page 24

... Temp Range Specific requirements are contained in the C=Commercial suffix such as Commercial or Industrial Temp Blank=Industrial Range, Hex code, Hex code revision, etc. NOTICE Please check the Summit Microelectronics Inc. web site at PROGRAMMABLE POWER FOR A DIGITAL WORLD™ 2064 1.2 09/20/06 SMM605 Preliminary Information Environmental Attribute 24 ...

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