SMM465 SUMMIT Microelectronics, Inc:, SMM465 Datasheet
SMM465
Related parts for SMM465
SMM465 Summary of contents
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... VREF_ADC REFERENCE Figure 1 – Applications Schematic using the SMM465 Controller to actively control the output levels four DC/DC Converters while also providing power on/off, cascade sequencing and output margining. Note: This is an applications example only. Some pins, components and values are not shown. ...
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... Figure 2 – Example Power Supply Sequencing and System Start-up Initialization using the SMM465. Any order of supply sequencing can be applied using the SMM465. Power supply ordering, trimming and Active DC control allows supply cascade sequencing, automatic level adjustment, margin testing and reset control. ...
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... CAP CAP D TRIM A TRIM_CAP A Active DC Control (ADOC TM TRIM D TRIM_CAP D VREF_CNTL FILT_CAP Figure 3 – SMM465 Internal Functional Block Diagram. Summit Microelectronics, Inc VDD_CAP 3.6V or Power Supply 5.5V Arbitrator Regulator UVLO Control Temperature Sensor Memory, Limit and Status ) Registers 2085 1.1 05/27/04 SMM465 Preliminary Information PWR_ON/OFF ...
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... I C Clock line The address pin is biased either to VDD_CAP or GND. communicating with the SMM465 over the 2-wire bus A2 provides a mechanism for assigning a unique bus address. Programmable active high/low input. When asserted the RST output will be go active. When de-asserted the RST output will go inactive immediately ...
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... External sample and hold capacitor input used to set the voltage on the X TRIM pins, TRIM_CAP through TRIM_CAP A Power supply of the part 12V power supply input internally regulated to either 3.6V or 5.5V External capacitor input used to filter the internal supply Leave open, do not connect. 2085 1.1 05/27/04 SMM465 Preliminary Information inputs X through inputs to the 10-bit ADC, CAP X D ...
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... PACKAGE AND PIN CONFIGURATION PWR_ON/OFF HEALTHY Summit Microelectronics, Inc 48 LEAD TQFP SDA 1 SCL FAULT 7 8 RST 9 AIN1 10 AIN2 11 GND 12 2085 1.1 05/27/04 SMM465 Preliminary Information 36 VMB 35 TRIM_CAPC 34 TRIMC 33 PUPC 32 CAPC 31 VMC 30 TRIM_CAPD 29 TRIMD 28 PUPD 27 CAPD 26 VMD ...
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... All TRIM pins floating, VDD floating TRIM Sourcing Maximum Current TRIM Sinking Maximum Current Depends on Trim range of DC-DC Converter VDD = 2.7V VDD = 5.0V VDD = 2.7V VDD = 5.0V Internally regulated to 3.6V Internally regulated to 5.5V Internally regulated to 3.6V Internally regulated to 5.5V 2085 1.1 05/27/04 SMM465 Preliminary Information ° +85 ° (Commercial) ............– + C/W Min Typ Max 2.7 5.5 10 ...
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... SINK ≥ V 3.5V SENSE Internal V =1.25V, Total REF PUPx I < 3ma SINK VDD_CAP voltage at which the PUP, RST, HEALTHY and FAULT outputs are valid VDD_CAP Rising VDD_CAP Falling 2085 1.1 05/27/04 SMM465 Preliminary Information Min Typ Max Unit 0 0 1.0 mA +0.3 V VDD_CAP ...
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... Note 1 - The formula for the total ADC inaccuracy is: [((ADC read voltage) +/- INL)*(range of gain error)]+range of offset error Summit Microelectronics, Inc Notes Minimum resolution for which no missing codes are guaranteed Conversion rate = 500Hz Note 1 Note 1 Note 1 2085 1.1 05/27/04 SMM465 Preliminary Information Min Typ Max Unit 10 Bits 10 Bits ...
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... STT Time for ADC conversion of all 11 channels Update period for Active DC Control of channels A – F Slow Margin, + 10% change in voltage with 0.1% ripple TRIM_CAP=1µF Fast Margin, + 10% change in voltage with 0.1% ripple TRIM_CAP=1µF 2085 1.1 05/27/04 SMM465 Preliminary Information Min Typ Max Unit -15 t +15 % DPON -15 t +15 % ...
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... Note 1/ Note 1/ 250 0 Noise suppression Configuration Registers Memory Array HIGH LOW HD:DAT SU:DAT HD:SDA Figure 4 - Basic I C Serial Interface Timing 2085 1.1 05/27/04 SMM465 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 ...
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... TIMING DIAGRAMS (CONTINUED) PUP t DPONA PUP PUP PUP Figure 5 - The SMM465 cascade sequencing the supplies on and then monitoring for fault conditions. PUP PUP PUP t C DPOFFC VM C PUP t D DPO FFD VM D Figure 6 - The SMM465 cascade sequencing the supplies off. ...
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... APPLICATIONS INFORMATION DEVICE OPERATION POWER SUPPLY The SMM465 can be powered by either a 12V input through the 12VIN pin 3.3V or 5.0V input through the VDD pin. The 12VIN pin feeds an internal programmable regulator that internally generates either 5.5V or 3.6V. A voltage arbitration circuit allows the device to be powered by the highest voltage from either the regulator output or the VDD input ...
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... Power-on sequencing while the pins are PWR_ON/OFF pin is in its inactive state. X pins. The voltage The SMM465 can be programmed to wait until either X or both VDD and 12VIN inputs are within their respective voltage threshold limits before Power-on sequencing is allowed to begin. This ensures that the converters have their full supply voltage before they are enabled ...
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... TEMPERATURE SENSOR ACCURACY The internal temperature sensor accuracy is ±5 -40 to +90 of the SMM465 die and the ambient temperature. If VDD is at 5V, the die temperature specific applications measure the Vdd or 12VIN supply current and calculate the power dissipated and ...
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... X position are below the programmed OFF thresholds. At this point, the SMM465 will decrement to the next sequence position and begin to timeout the Power-off delay times for the associated channels. This process continues until all of channels in the sequence have turned off and are below their OFF thresholds ...
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... SMM465 Supplies SMM465 Hold-Up Time +12VIN VDD_CAP Figure 9 - Power Brown-Out with Resulting Loss of SMM465 Supply Voltages Summit Microelectronics, Inc followed by a ‘Power-On’ command and ending with a ‘Clear’ command. If the PWR_ON/OFF pin is in the asserted state, the SMM465 will initiate a power-on sequence once all input conditions are met ...
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... Once power has recovered above 2.6V the SMM465 will restart In assuming the PWR_ON/OFF pin is in the asserted state SMM465 can be used with the PWR_ON/OFF pin either toggled by a logic level, controlled by a software restarting Power-on command or tied either high or low as described in the data sheet ...
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... APPLICATIONS INFORMATION (CONTINUED) Figure 11 – SMM465 Distributed power applications schematic. The accuracy of the external reference (U10) sets the accuracy of the ADOC function. Total accuracy with a ±0.1% external reference is ±0.2%. Summit Microelectronics, Inc 2085 1.1 05/27/04 SMM465 Preliminary Information 19 ...
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... International Rectifier iP1202 Demo board . Figure 12 – The SMM465 can be used to sequence and control discrete DC switching regulators. The ADOC function sets the output voltage of the IR iP1202 Regulator through the FBX feedback pins. Accuracy is improved even under full load, essentially acting as a “SENSE” pin. The sequence function is applied through the iP1202 SSX soft start pins. Figure 13 – ...
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... SDA 2 1 SCL 2 C serial bus connections to program the SMM465. Note that the MR pin 2085 1.1 05/27/04 Preliminary Information 2 C serial bus format so that it can be directly An example of the connection This will ensure proper device Top view of straight 0.1" x 0.1 closed-side connector. SMX3200 interface cable connector. ...
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... The address pointer for the configuration registers, memory, command and status registers and ADC allowing used registers must be set before data can be read from the SMM465. This is accomplished by a issuing a dummy write command, which is simply a write command that or 1011 as BIN BIN is not followed by a Stop condition ...
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... Two Configuration Registers, ADC Conversion Readout 2-k Bits of General-Purpose Memory 2-k Bits of General-Purpose Memory Configuration Registers Table 1 - Address bytes used by the SMM465. 2085 1.1 05/27/04 SMM465 Preliminary Information . Writes and reads of the BIN 2 C bus using the ADC When the has completed, ...
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... C K Data ( Data (16 SMM465 ...
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... Write BIN Bus Address Data ( Read BIN SMM465 ...
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... Bus Address Data ( SMM465 ...
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... Bus Address 10-Bit ADC Data SMM465 ...
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... R99 RC1 The default device ordering number is SMM465FC-249 programmed with the register contents as shown above and tested over the commercial temperature range with a VREF setting of 1.25V. Other standard external VREF voltage settings that can be specified and tested are values of: 1.024, 1.225, 1.250, 2.048, 2.500, 3.000 or 3.300. ...
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... Summit Microelectronics, Inc 48 PIN TQFP PACKAGE (A) BSC (B) (B) (A) Ref Jedec M S-026 0.037 - 0.041 0.95 - 1.05 0.047 (1.2) B 2085 1.1 05/27/04 Preliminary Information Inches (Millim eters) 0.02 (0.5) 0.007 - 0.011 (0.17 - 0.27) DETAIL "A" MAX. 0.002 - 0.006 (0.05-0.15) DETAIL "B" SMM465 BSC 0.039 Ref (1.00 Min Max 0.018 - 0.030 (0.45 - 0.75) 29 ...
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... Hex code, Hex code revision, etc. The calibrated VREF voltage Temp Range settings are standard values of: 1.024, 1.225, 1.250, 2.048, C=Commercial 2.500, 3.000 or 3.300 Blank=Industrial NOTICE Please check the Summit Microelectronics Inc. web site at PROGRAMMABLE ANALOG FOR A DIGITAL WORLD™ 2085 1.1 05/27/04 SMM465 Preliminary Information 30 ...