PTH03060WAST

PTH03060W —3.3 V Input 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module SLTS215B – MAY 2003 – REVISED DECEMBER 2003 Features NOMINAL SIZE = • Up to 10-A Output Current • 3.3-V Input Voltage • Wide-Output Voltage Adjust (0.8 V to 2.5 V) • Efficiencies up to 96 % • 114 W/in³ Power Density • On/Off Inhibit • Output Voltage Sense • Pre-Bias Startup • Margin Up/Down Controls • Under-Voltage Lockout 1 in x 0.62 in (25,4 mm x 15,75 mm) • Auto-Track™ Sequencing • Output Over-Current Protection (Non-Latching, Auto-Reset) • Operating Temp: –40 to +85 °C • DSP Compatible Output Voltages • Safety Agency Approvals: UL 1950, CSA 22.2 950, EN60950 VDE (Pending) • Point-of-Load Alliance (POLA) Compatible Description Pin Configuration Sequencing. Auto-Track simplifies the task of supply voltage sequencing in a power system by enabling modules to track each other, or any external voltage, during power up and power down. Other operating features include an on/off inhibit, margin up/down controls, and the ability to start up into an existing output voltage or prebias. To ensure tight load regulation, an output voltage sense is also provided. A non-latching overcurrent trip serves as load fault protection. Target applications include complex multi-voltage, multi-processor systems that incorporate the industry’s high-speed DSPs, micro-processors and bus drivers. The PTH03060W non-isolated power module is small in size but big on performance and flexibility. Its high output current, compact footprint, and industryleading features offers system designers a versatile module for powering complex multi-processor digital systems. This product employs double-sided surface mount construction and provides high-performance step-down power conversion for up to 10 A of output current from a 3.3-V input bus voltage. The output voltage is adjustable and can be set to any value over the range, 0.8 V to 2.5 V, using a single resistor. This series includes Auto-Track™ Pin 1 2 3 4 5 6 7 8 9 10 Function GND Vin Inhibit * Vo Adjust Vo Sense Vout GND Track Margin Down * Margin Up * * Denotes negative logic: Open = Normal operation Ground = Function active ™ Track Auto- n c i n g e Sequ Standard Application Rset = Required to set the output voltage to a value higher than 0.8 V. (See spec. table for values) Cin = Required 330 µF capacitor Cout = Optional 330 µF capacitor Track Margin Down Margin Up 10 9 8 7 1 PTH03060W (Top View) VIN 3 5 CIN 330 µF (Required) RSET 1 %, 0.1 W (Required) + + For technical support and further information visit http://power.ti.com 4 Vo Sense Inhibit GND VOUT 6 2 COUT 330 µF (Optional) GND L O A D PTH03060W —3.3 V Input 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module SLTS215B – MAY 2003 – REVISED DECEMBER 2003 Ordering Information Output Voltage (PTH03060Hxx) Package Options (PTH03060xHH) (1) Code W Code AH AS Voltage 0.8 V – 2.5 V (Adjust) Description Horiz. T/H SMD, Standard (3) Pkg Ref. (2) (EUW) (EUY) Notes: (1) Add “T” to end of part number for tape and reel on SMD packages only. (2) Reference the applicable package reference drawing for the dimensions and PC board layout (3) “Standard” option specifies 63/37, Sn/Pb pin solder material. Pin Descriptions Vin: The positive input voltage power node to the module, which is referenced to common GND. Vout: The regulated positive power output with respect to the GND node. GND: This is the common ground connection for the Vin and Vout power connections. It is also the 0 VDC reference for the control inputs. Inhibit: The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a lowlevel ground signal to this input disables the module’s output and turns off the output voltage. When the Inhibit control is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the module will produce an output whenever a valid input source is applied. Vo Adjust: A 0.1 W 1 % resistor must be directly connected between this pin and pin 7 (GND) to set the output voltage to a value higher than 0.8 V. The temperature stability of the resistor should be 100 ppm/°C (or better). The set point range for the output voltage is from 0.8 V to 3.6 V. The resistor value required for a given output voltage may be calculated from the following formula. If left open circuit, the output voltage will default to its lowest value. For further information on output voltage adjustment consult the related application note. Rset = 10 kΩ 0.8 V Vout – 0.8 V – 2.49 kΩ The specification table gives the preferred resistor values for a number of standard output voltages. Vo Sense: The sense input allows the regulation circuit to compensate for voltage drop between the module and the load. For optimal voltage accuracy Vo Sense should be connected to Vout. It can also be left disconnected. Track: This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage from 0 V up to the nominal set-point voltage. Within this range the output will follow the voltage at the Track pin on a volt-for-volt basis. When the control voltage is raised above this range, the module regulates at its set-point voltage. The feature allows the output voltage to rise simultaneously with other modules powered from the same input bus. If unused, this input should be connected to Vin. Note: Due to the under-voltage lockout feature, the output of the module cannot follow its own input voltage during power up. For more information, consult the related application note. Margin Down: When this input is asserted to GND, the output voltage is decreased by 5% from the nominal. The input requires an open-collector (open-drain) interface. It is not TTL compatible. A lower percent change can be accomodated with a series resistor. If unused, this input may be left unconnected. For further information, consult the related application note. 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. If unused, this input may be left unconnected. For further information, consult the related application note. For technical support and further information visit http://power.ti.com PTH03060W —3.3 V Input 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module SLTS215B – MAY 2003 – REVISED DECEMBER 2003 Environmental & Absolute Maximum Ratings Characteristics Symbols Track Input Voltage Operating Temperature Range Solder Reflow Temperature Storage Temperature Mechanical Shock Vtrack Ta Treflow Ts Mechanical Vibration Weight Flammability — — (Voltages are with respect to GND) Conditions Over Vin Range Surface temperature of module body or pins — Per Mil-STD-883D, Method 2002.3 1 msec, ½ Sine, mounted Mil-STD-883D, Method 2007.2 20-2000 Hz Min Typ –0.3 –40 (i) — — Max Units Vin + 0.3 85 235 (ii) 125 V °C °C °C –40 — — 500 — — 20 — G’s — 3.7 — grams G’s Meets UL 94V-O Notes: (i) For operation below 0 °C the external capacitors must bave stable characteristics. use either a low ESR tantalum, Os-Con, or ceramic capacitor. (ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum. Specifications (Unless otherwise stated, T a =25 °C, Vin =3.3 V, Vo =2 V, Cin =330 µF, C out =0 µF, and I o =Io max) Characteristics Symbols Conditions Output Current Io 0.8 V ≤ Vo ≤ 2.5 V, Input Voltage Range Set-Point Voltage Tolerance Temperature Variation Line Regulation Load Regulation Total Output Variation Vin Vo tol ∆Regtemp ∆Regline ∆Regload ∆Regtot Over Io range Efficiency η Vo Ripple (pk-pk) Over-Current Threshold Transient Response Vr Io trip Margin Up/Down Adjust Margin Input Current (pins 9 /10) Track Input Current (pin 8) Track Slew Rate Capability Under-Voltage Lockout ttr ∆Vtr ∆Vo margin IIL margin IIL track dVtrack/dt UVLO Inhibit Control (pin3) Input High Voltage Input Low Voltage Input Low Current VIH VIL IIL inhibit Input Standby Current Switching Frequency External Input Capacitance External Output Capacitance Iin inh ƒs Cin Cout Reliability MTBF Min 60 °C, 200 LFM airflow 25 °C, natural convection –40 °C