MPDTH12040WA*Application 1 DC-DC Converter Application Manual MPDTH12040W** 50A, 12V Input Non-Isolated Wide-Output Adjust Power Module Features Start Up Into Output Pre-bias 50-A Output Current Margin Up/Down Controls 8-V to 14V Input Voltage o Operating Temp: -40 to +85 C Wide-Output Voltage Adjust Multi-Phase, Switch-Mode Topology (0.8 V to 5.5 V) Programmable Under-voltage Lockout Efficiencies up to 96 % (UVLO) On/Off Inhibit Safety Agency Approvals Differential Output Sense UL/cUL 60950, EN60950, VDE Output Over-current Protection (Non-latching, Auto-Reset) Over-temperature Protection TM Auto-Track Sequencing NOMINAL SIZE = 52mm x 26.7 mm Description Pin Configuration A differential remote output voltage sense ensures Pin Function The MPDTH12040W is a high-performance tight load regulation, and an output over-current 1 GND 50-A rated, non-isolated, power module, which and over-temperature shutdown protect against 2 Vin uses the latest multiphase switched-mode most load faults. The programmable 3 GND topology. under-voltage lockout allows the turn-on and 4 Vin This provides a small, ready-to-use module, that turn-off voltage thresholds to be customized. 5 GND can power the most densely populated The MPDTH12040W incorporates Auto-Track. 6 Vin multiprocessor systems. The Auto-Track feature of the MPDTH family 7 Inhibit Operating from an input voltage range of 8 V to allows the outputs of multiple modules to track a 8 UVLO Prog 14 V, the MPDTH12040W requires a single common voltage during power up and power down 9 Vout resistor to set the output voltage to any value transitions. This simplifies power up and power 10 GND over the range, 0.8 V to 5.5 V. The wide input down supply-voltage sequencing in a power 11 +Sense voltage range makes the MPDTH12040W supply system. 12 Vout particularly suitable for advanced computing and The modules use double-sided surface mount 13 GND server applications that utilize a loosely construction to provide a low profile and compact 14 -Sense regulated 12-V intermediate distribution bus. footprint. 15 Vout The modules incorporate a comprehensive list of Package options include both through-hole and 16 GND features. surface mount configurations. 17 Vo Adjust They include on/off inhibit and margin up/down 18 Track controls. 19 Margin Up 20 Margin Down Standard Application MPDTH12040W A. RSET = Required to set the output voltage higher than the minimum value (see the electrical characteristics for values.) B. CI = Required 560F electrolytic capacitor. 1000F recommended. C. CO = Required 660F (or 680F) electrolytic capacitor. Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2008.1.21 1 MPDTH12040WA*Application 2 Ordering Information Output Voltage (MPDTH12040xx) Package Options (MPDTH12040x) Code Voltage Code Description W 0.8V-5.5V(Adjustable) AH Horiz. T/H AS SMD(*1) Notes (1) Pb free (Sn-Ag-Cu) pin solder material. Pin Description GND: The common ground connection for the VI and VO +Sense: The sense inputs allow the regulation circuit to power connections. It is also the 0 Vdc reference for the compensate for voltage drop between the module and the control inputs. load. For optimal voltage accuracy, +Sense should be connected to VO. If it is left open, a low-value internal Vin: The positive input voltage power node to the resistor ensures that the output remains in regulation. module,which is referenced to common GND. -Sense: For optimal voltage accuracy, Sense should be Vout: The regulated positive power output with respect connected to the ground return at the load. If it is left open, to the GND node. a low-value internal resistor ensures that the output remains in regulation. (1) Inhibit : The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a UVLO Prog: Connecting a resistor from this pin to signal low level ground signal to this input disables the modules ground allows the on threshold of the input under-voltage output and turns off the output voltage. When the Inhibit lockout (UVLO) to be adjusted higher than the default value. control is active, the input current drawn by the regulator The hysteresis can also be independently reduced by is significantly reduced. If the Inhibit pin is left connecting a second resistor from this pin to Vin. For further open-circuit, the module produces an output whenever a information, see the Application Information section. valid input source is applied. Track: This is an analog control input that allows the output Vo Adjust: A 1%, 0.05-W resistor must be connected voltage to follow another voltage during power up and between this pin and GND to set the output voltage power down sequences. The pin is active from 0 V, up to higher than the minimum value. The set-point range for the nominal set-point voltage. Within this range, the module the output voltage is from 0.8 V to 5.5 V. The resistor output follows the voltage at the Track pin on a volt-for-volt required for a given output voltage may be calculated basis. When the control voltage is raised above this range, from the following formula. If left open circuit, the module the module regulates at its nominal output voltage. If output defaults to its lowest output voltage value. For unused, this input should be connected to Vin for a faster further information on the adjustment and/or trimming of power up. For further information, see the Application the output voltage, see the related Application Information section. Information section. (1) Margin Down : When this input is asserted to GND, the output voltage is decreased by 5% from the nominal. The 0.8V Rset = 10 k -1.696 k input requires an open-collector (open-drain) interface. It is Vout-0.8 not TTL compatible. A lower percent change can be The specification table gives the preferred resistor values accommodated with a series resistor. For further for a number of standard output voltages. information, see the Application Information section. (1) Margin Up : When this input is asserted to GND, the output voltage is increased by 5%. The input requires an open collector (open-drain) interface. It is not TTL compatible. The percent change can be reduced with a series resistor. For further information, see the Application Information section. (1) Denotes negative logic: Open = Normal operation / Ground = Function active Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2008.1.21