SMM151 SUMMIT Microelectronics, Inc:, SMM151 Datasheet
SMM151
Related parts for SMM151
SMM151 Summary of contents
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... WP (GPIO0) (GPIO1) (GPIO2) (GPIO3) Figure 1 – Application with the SMM151/152 used to Monitor and Margin a DC/DC Converter. Notes: R must be Kelvin sensed for maximum current sensing accuracy.This is an applications example only. Some components and values are S not shown. © SUMMIT Microelectronics, Inc. 2007 • 757 N. Mary Avenue • Sunnyvale CA 94085 • Phone 408 523-1000 • FAX 408 523-1266 ...
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... GENERAL DESCRIPTION The SMM151 and SMM152 are capable of margining the DC output voltage of LDOs or DC/DC converters that use a trim/adjust pin. The programmable over a standard 2-wire I interface and is used to set the margin low/high DC output voltages. The devices are also capable of monitoring the differential output voltage and the input current of DC/DC converters, thereby providing real-time power information to the system ...
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... MUP MDN 50kΩ SCL SDA WP GPIO0 Control GPIO1 GPIO2 GPIO3 SMM152 Figure 2 – SMM151 and SMM152 Controller Internal Block Diagram. Summit Microelectronics, Inc VREF READY FAULT# VREF Output VREF = 1.25V Control Up/Dn Digital Margin Control Target Comparator Logic ...
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... Power supply of the part. External capacitor input used to filter the internal VDD supply rail. Ground of the part. The SMM151/2 ground pin should be connected to the ground of the device under control star point ground. PCB layout should take into consideration ground drops. ...
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... GND. The bottom side metal plate (Pad 29) should be connected on the PCB to GND for optimized noise performance. Pin SCL VDD TRIM 2 20 (GPIO0) COMP1 3 19 SMM150 A1 CS READY CS CAPC 6 16 GND VM 2131 3.0 1/20/2010 5 SMM151/152 ...
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... I TRIM Depends on Converter Trim range VDD = 2.7V VDD = 5.0V VDD = 2.7V VDD = 5.0V ISINK = 1mA ≤300kΩ VDD = 2.7V, R pullup ≤300kΩ VDD = 5.0V, R pullup ≤300kΩ VDD = 2.7V, R pulldown ≤300kΩ VDD = 5.0V, R pulldown 2131 3.0 1/20/2010 6 SMM151/152 (Commercial) ..................... 0°C to +70° Min. Typ. Max 2.7 3.3 5.5 -0.3 VDD -0.3 +0.5 4 1.5 -1.5 GND 2.5 0.3 VDD ...
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... VM-) = 0.5V – VDD, Note 5 CM Minimum CS+ - CS- voltage Maximum CS+ - CS- voltage ≥ 50mV, Note 2 CS ADC CS < 50mV, Note 2 ADC V (CS+, CS-) = 5.0V, Note (CS+, CS-) = 12V, Note 5 CM IN(COMP1/2) 2131 3.0 1/20/2010 7 SMM151/152 Min. Typ. Max Unit μA -3.0 +3.0 0 VDD kΩ 1.24 1.25 1.26 V 0.495 ...
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... Programmable Margin Delay Times t MARGIN Summit Microelectronics, Inc Notes Min. Update period for ADC conversion and DAC update T = (X)(1.8ms) MARG_UPDATE where: X=step number of possible 256 steps and 1 step=10mV See Figure 4 2131 3.0 1/20/2010 8 SMM151/152 Typ. Max Unit 1.8 ms 1.8 ms μs 70 100 130 ...
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... SCL low to valid SDA (cycle n) SCL low (cycle n+1) to SDA change Note 5 Note 5 Noise suppression t t HIGH t LOW HD:DAT SU:DAT HD:STA Figure 3. Basic I C Serial Interface Timing 2131 3.0 1/20/2010 9 SMM151/152 Min Typ Max Units 0 100 KHz μs 4.7 4.0 μs μs 4.7 4.7 μs μs 4.0 4.7 μs 0.2 3.5 μs 0.2 μ ...
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... The converter is held at the margin voltage until the SMM151 receives an I MUP/MDN pin is de-asserted. When not margining, the TRIM pin on the SMM151/152 high impedance state. The voltage on the TRIM pin is buffered and applied to the ADC at the beginning of a margin cycle to ensure the converter is margined from its nominal setpoint ...
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... POWER OK? YES INPUT VTRIM TO ADC DUMP ADC INTO DAC DAC DRIVES BRICK (TRIM OUTPUT LO-Z) INPUT VOUT TO ADC ADC EQUAL TARGET? NO YES 1. HOLD DAC 2. CLEAR STATUS REGISTER 3. WAIT FOR NEXT COMMAND Figure 5 - SMM151/152 Margin Flow Chart 2131 3.0 1/20/2010 11 SMM151/152 INCREMENT/ DECREMENT DAC ...
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... The parts can be programmed to trigger the FAULT# pin when either COMPx comparator has exceeded the setting. The READY and FAULT# outputs of the SMM151/152 are active as long as the triggering limit remains in a fault condition. The READY pin is a programmable active high/low open drain output indicates that VM its’ ...
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... Off to Hi/Low/Nominal or from Nominal to Hi/Low or Hi/Low to Nominal but not from Hi/Low/Nominal to Off. WRITE PROTECTION Write protection for the SMM151/152 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 write protection register ...
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... OV of 1.7V on COMP1 and 1.3V on COMP2, the voltage divider resistors are: For OV 1.37k 3.83k, 1%, For UV 1.02k 25.5k, 1%. The Programming Supply jumper can be used to supply the SMM151 VDD voltage from the SMX3202 programmer when the device is programmed with board power off and the controlled supply unloaded. ...
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... TRIM input of the converter. From the manufacturer’s data sheet obtain the value of the internal voltage reference and equivalent TRIM input series resistance. TRIM R TRIM SMM151/152 TRIM Pin Figure 7 - Simplified TRIM circuit of an isolated DC-DC converter connects to SMM151/152 TRIM output For this example R is found: TRIM ( ) ⎡ ⎤ ...
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... APPLICATIONS INFORMATION (CONTINUED TRIM SMM151/152 TRIM Pin R2 Figure 8 - Simplified TRIM circuit of a non-isolated DC-DC converter connects to SMM151/152 TRIM output Summit Microelectronics, Inc VOUT To FB node (VREF) 2131 3.0 1/20/2010 16 SMM151/152 ...
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... C1 0.1μ SDA 2 1 SCL 2 C serial bus connections to program the SMM151/152. The SMM151/152 have 2131 3.0 1/20/2010 17 SMM151/152 2 C serial bus format so that it can be directly Pin 10, Reserved Pin 9, 5V Pin 8, Reserved Pin 7, 10V Pin 6, MR# Pin 5, Reserved Pin 4, SDA ...
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... A1 and A0 respectively) or may be left open (Z) to allow for a total of 21 distinct device addresses. accessed in the address byte of the serial data stream must match the setting on the SMM151 address pins. Summit Microelectronics, Inc WRITE Writing to the memory or configuration registers is illustrated in Figures 10, 11, 12, 14, 15 and 17 ...
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... Table 2 – Example device addresses allowed by the SMM151. Summit Microelectronics, Inc COMMAND AND STATUS REGISTERS Writes and reads of the command and status registers are shown in Figures 17 and 18. GRAPHICAL USER INTERFACE (GUI) Device configuration utilizing the Windows based SMM151/152 graphical user interface (GUI) is strongly recommended ...
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... Figure 12 – Configuration Register Page Write 2131 3.0 1/20/2010 20 SMM151/152 Data = 55 HEX Unlocks 5 Unlocks HEX HEX General Purpose Configuration EE ...
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... 2131 3.0 1/20/2010 21 SMM151/152 Bus Address ...
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... Figure 18 - Command and Status Register Read 2131 3.0 1/20/2010 22 SMM151/152 Bus Address ...
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... PACKAGE OUTLINES Summit Microelectronics, Inc 28-Pad QFN 2131 3.0 1/20/2010 23 SMM151/152 ...
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... N Part Number Suffix Temp Range Customer specific requirements are contained in the suffix such as Hex code, Hex code revision, C=Commercial etc. (Default CSIRs: SMM151=786, Blank=Industrial SMM152=957) NOTICE Please check the Summit Microelectronics Inc. web site at PROGRAMMABLE POWER FOR A GREEN PLANET™ 2131 3.0 1/20/2010 ...