PTH03060W TI | Alldatasheet

Document overview

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Technical content

Features

  • 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
  • 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

The PTH03060W non-isolated power module is small in size but big on per- formance and flexibility. Its high output current, compact footprint, and industry- leading 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 cur- rent 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™ 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 over- current 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. Auto-Track™ Sequencing Pin Configuration Pin Function

1 GND

3 Inhibit *

7 GND

8 Track

9 Margin Down *

10 Margin Up *

  • Denotes negative logic: Open = Normal operation Ground = Function active NOMINAL SIZE = 1 in x 0.62 in (25,4 mm x 15,75 mm) Margin Up Margin Down VIN L O A D C IN 330 µF (Required) + C OUT 330 µF (Optional) Inhibit GND GND VOUT Vo Sense Track R SET 1 %, 0.1 W (Required) PTH03060W (Top View) 10 9 8 543 PTH03060W —3.3 V Input 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module 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

For technical support and further information visit http://power.ti.com Pin Descriptions Vin: The positive input voltage power node to the mod- ule, 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 low- level 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 regula- tor is significantly reduced. If the Inhibit pin is left open-circuit, the module will produce an output when- ever 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 adjust- ment consult the related application note. Rset = 10 kΩ 0.8 V – 2.49 kΩ Vout – 0.8 V 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 pow- ered from the same input bus. If unused, this input should be connected to V in. 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 de creased by 5% from the nominal. The input requires an open-collector (open-drain) interface. It is not TTL compatible. A l ower 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 out- put 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 uncon- nected. For further information, consult the related application note.

Ordering Information

Code Description Pkg Ref. (2) AH Horiz. T/H (EUW) AS SMD, Standard (3) (EUY) Output Voltage (PTH03060/G72xx) Code V oltage W 0.8 V – 2.5 V (Adjust) 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. 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module PTH03060W —3.3 V Input SL TS215B – MAY 2003 – REVISED DECEMBER 2003

For technical support and further information visit http://power.ti.com Environmental & Absolute Maximum Ratings (Voltages are with respect to GND) Characteristics Symbols Conditions Min Typ Max Units Track Input Voltage V track –0.3 — V in + 0.3 V Operating Temperature Range T a Over Vin Range –40 (i) — 85°C Solder Reflow Temperature T reflow Surface temperature of module body or pins 235 (ii) °C Storage Temperature T s — –40 — 125°C Mechanical Shock Per Mil-STD-883D, Method 2002.3 —50 0 —G ’ s1 msec, ½ Sine, mounted Mechanical Vibration Mil-STD-883D, Method 2007.2 —2 0— G ’ s20-2000 Hz Weight — — 3.7 — grams Flammability — 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 s tated maximum. PTH03060W —3.3 V Input 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module SL TS215B – MAY 2003 – REVISED DECEMBER 2003 Specifications (Unless otherwise stated, T a =25 °C, Vin =3.3 V, Vo =2 V, Cin =330 µF, Cout =0 µF, and Io =Iomax) PTH03060W Characteristics Symbols Conditions Min Typ Max Units Output Current I o 0.8 V ≤ Vo ≤ 2.5 V, 60 °C, 200 LFM airflow 0 — 10 (1) A25 °C, natural convection 0 — 10 (1) Input Voltage Range V in Over Io range 2.95 (2) — 3.65V Set-Point Voltage Tolerance V o tol — — ±2 (3) %Vo Temperature Variation ∆Regtemp –40 °C <Ta < +85 °C — ±0.5 — %V o Line Regulation ∆Regline Over Vin range — ±10 — mV Load Regulation ∆Regload Over Io range — ±12 — mV Total Output Variation ∆Regtot Includes set-point, line, load, ——± 3 (3) %Vo–40 °C ≤ Ta ≤ +85 °C Efficiency η Io =7 A R SET = 2.21 kΩ Vo = 2.5 V — 93 — RSET = 4.12 kΩ Vo = 2.0 V — 92 — RSET = 5.49 kΩ Vo = 1.8 V — 91 — %RSET = 8.87 kΩ Vo = 1.5 V — 89 — RSET = 17.4 kΩ Vo = 1.2 V — 87 — RSET = 36.5 kΩ Vo = 1.0 V — 85— Vo Ripple (pk-pk) V r 20 MHz bandwidth — 25— mVpp Over-Current Threshold I o trip Reset, followed by auto-recovery — 20 — A Transient Response 1 A/µs load step, 50 to 100 % I omax, Cout =330 µF ttr Recovery Time — 70 — µSec ∆Vtr Vo over/undershoot — 100 — mV Margin Up/Down Adjust ∆Vo margin — ± 5— % Margin Input Current (pins 9 /10) I IL margin Pin to GND — – 8 (4) —µ A Track Input Current (pin 8) I IL track Pin to GND — — –130 (5) µA Track Slew Rate Capability dV track/dt C out ≤ Cout(max) — — 1 V/ms Under-Voltage Lockout UVLO V in increasing — 2.452.8 VVin decreasing 2.2 2.40 — Inhibit Control (pin3) R eferenced to GND Input High Voltage V IH Vin –0.5— Open (5) V Input Low Voltage VIL –0.2 — 0.6 Input Low Current IIL inhibit Pin to GND — –130 — µA Input Standby Current I in inh Inhibit (pin 3) to GND, Track (pin 8) open — 10 — mA Switching Frequency ƒ s Over Vin and Io ranges 275 300 325kHz External Input Capacitance C in 330 (6) ——µ F External Output Capacitance C out Capacitance value non-ceramic 0 330 (7) 5,500 (8) µFceramic 0 — 300 Equiv. series resistance (non-ceramic) 4 (9) ——m Ω Reliability MTBF Per Bellcore TR-332 5.7 — — 10 6 Hrs50 % stress, Ta =40 °C, ground benign Notes: (1) See SOA curves or consult factory for appropriate derating. (2) The minimum input voltage is equal to 2.95 V or Vout + 0.5 V, whichever is greater. (3) The set-point voltage tolerance is affected by the tolerance and stability of R SET. The stated limit is unconditionally met if R SET has a tolerance of 1 % with 100 ppm/°C or better temperature stability. (4) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc. (5) This control pin has an internal pull-up to the input voltage Vin. If it is left open-circuit the module will operate when i nput power is applied. A small low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note. (6) A 330 µF input capacitor is required for proper operation. The capacitor must be rated for a minimum of 500 mA rms of ripple current. (7) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the transient response. (8) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance. (9) This is the typcial ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 m Ω as the minimum when using max-ESR values to calculate.

For technical support and further information visit http://power.ti.com Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to modules soldered directly to a 4-layer PCB with 1 oz. copper. Typical Characteristics Characteristic Data; Vin =3.3 V (See Note A) Efficiency vs Load Current Power Dissipation vs Load Current Output Ripple vs Load Current Safe Operating Area; Vin =3.3 V (See Note B) Output Voltage =2.5 V Output Voltage =1.0 V 10-A, 3.3-V Input Non-Isolated Step-Down Switching Power Module PTH03060W —3.3 V Input SL TS215B – MAY 2003 – REVISED DECEMBER 2003 100 02468 1 0 Iout - Amps Efficiency - % 2.5 V 2.0 V 1.8 V 1.5 V 1.2 V 1.0 V VOUT 02468 1 0 Iout - Amps Ripple - mV 2.5 V 2.0 V 1.8 V 1.5 V 1.2 V 1.0 V VOUT 02468 1 0 Iout - Amps Pd - Watts 02468 1 0 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 100LFM Nat Conv Airflow 02468 1 0 Iout (A ) Ambient Temperature (°C) 400LFM 200LFM 100LFM Nat Conv Airflow

For technical support and further information visit http://power.ti.com PTH03060W & PTH05060W Capacitor Recommendations for the PTH03060 & PTH05060 Series of Power Modules Input Capacitor The recommended input capacitor(s) is determined by the 330 µF minimum capacitance and 500 mArms mini- mum ripple current rating. Ripple current, less than 150 m Ω equivalent series resis- tance (ESR), and temperature are the major considerations when selecting input capacitors. Unlike polymer tantalum, regular tantalum capacitors have a recommended mini- mum voltage rating of 2 × (maximum DC voltage + AC ripple). This is standard practice to ensure reliability. For improved ripple reduction on the input bus, ceramic capacitors [1] may used to compliment electrolytic types to achieve the mini mum required capacitance. Output Capacitors (Optional) For applications with load transients (sudden changes in load current), regulator response will benefit from an external output capacitance. The recommended output capacitance of 330 µF will allow the module to meet its transient response specification (see product data sheet). For most applications, a high quality computer-grade aluminum electrolytic capacitor is adequate. These capaci- tors provide decoupling over the frequency range, 2 kHz to 150 kHz, and are suitable for ambient temperatures above 0 °C. For operation below 0 °C tantalum, ceramic or Os-Con type capacitors are recommended. When using one or more non-ceramic capacitors, the calculated equiva- lent ESR should be no lower than 4 m Ω (7 mΩ using the manufacturer’s maximum ESR for a single capacitor). A list of preferred low-ESR type capacitors are identified in Table 2-1. Ceramic Capacitors Above 150 kHz the performance of aluminum electrolytic capacitors is less effective. Multilayer ceramic capacitors have very low ESR and a resonant frequency higher than the bandwidth of the regulator. They can be used to reduce the reflected ripple current at the input as well as improve the transient response of the output. W hen used on the output their combined ESR is not critical as long as the total value of ceramic capacitance does not exceed 300 µF. Also, to prevent the formation of local resonances, do not place more than five identical ceramic capacitors in par- allel with values of 10 µF or greater. Tantalum Capacitors Tantalum type capacitors can be used at both the input and output, and are recommended for applications where the ambient operating temperature can be less than 0 °C. The AVX TPS, Sprague 593D/594/595 and Kemet T495/ T510 capacitor series are suggested over many other tantalum types due to their higher rated surge, power dissipation, and ripple curr ent capability. As a caution many general purpose tantalum capacitors have consid- erably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are also less reliable as they have lower power dissipation and surge current ratings. Tantalum capacitors that do not have a stated ESR or surge current rating are not recommended for power applications. When specifying Os-Con and polymer tantalum capacitors for the output, the minimum ESR limit will be encoun- tered well before the maximum capacitance value is reached. Capacitor Table Table 2-1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The recommended number of capacitors required at both the input and output buses is identified for each capacitor type. This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical parameters necessary to insure both optimum regulator performance and long capacitor life. Designing for Very Fast Load Transients The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1 A/µs. The typical voltage deviation for this load transient is given in the data sheet specification table using the optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter’s regu- lation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with any DC/DC converter once the speed of the transient exceeds its bandwidth capability. If the target application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the capacitors selected. If the transient performance requirements exceed that specified in the data sheet, or the total amo unt of load capacitance is above 3,000 µF, the selection of output capacitors becomes more important. For further guidance consult the separate application note, “ Selecting Output Capacitors for PTH Products in High-Performance Applica- tions.”

For technical support and further information visit http://power.ti.com PTH03060W & PTH05060W Table 2-1: Input/Output Capacitors epyT,rodneVroticapaC )elytS(seireS scitsiretcarahCroticapaCy titnauQ gnikroW egatloV )Fµ(eulaVR SE.xaM zHk001ta elppiR.xaM C°58tatnerruC )smrI( eziSlacisyhP )mm( tupnI suB tuptuO suB rebmuNtraProdneV munimulA,cinosanaP )laidaR(CF )DMS(KF CF( DMS) V01 V52 V61 033 074 033 711.0 Ω 080.0 Ω 051.0 Ω Am555 Am058 Am076 8× 01 01 × 2.01 01 × 2.01 133A1CFUEE P174E1KFVEE P133C1CFVEE detinUn oc-imehC )DMS(munimulA-yloP,AXP )laidaR(munimulA-yloP,SP )laidaR(noc-sO,XF )laidaR(munimulA,ZXL V01 V3.6 V01 V61 033 093 093 033 420.0 Ω 210.0 Ω 810.0 Ω 021.0 Ω Am0773 Am0774 Am0173 Am555 01 × 7.7 8× 5.11 8× 5.01 8× 5.21 PT08JM133CV01AXP 11HM093SP6 M093XF01 LL21X8M133BV61ZXL munimulA,nocihciN )DMS(GW )llaidaR(DH )laidaR(MP V52 V61 V61 033 033 033 051.0 Ω 270.0 Ω 021.0 Ω Am076 Am067 Am526 01 × 01 8× 5.11 01 × 5.21 SG1RNM133E1GWU RPM133A1DHU 6HPM133C1MPU :munimulA-yloP,cinosanaP )DMS(AW )DMS(ES/S V01 V3.6 033 081 220.0 Ω 500.0 Ω Am0054 Am0004 01 × 2.01 3.7 × 3.4 × 2.4 P133A1AWFEE R181J0ESFEE oynaS )laidaR(noc-sO,PS (,PVSD MS) )DMS(pacsoP,EPT V01 V01 V3.6 074 033 033 510.0 Ω 710.0 Ω 520.0 Ω Am0054 Am0593 Am0042 01 × 5.01 8× 21 3.7 × 3.4 M074PS01 M033PVS01 LM033EPT6 (SPTmulatnaT,XVAS M D ) V01 V01 033 033 540.0 Ω 060.0 Ω Am3271 Am6281 L3.7 × W7.5 × H1.4 5400R010M733ESPT 0600R010M733VSPT mulatnaT-yloP,temeK )DMS(,025T )DMS(.035T V01 V01 033 033 040.0 Ω 510.0 Ω Am0081 Am0083> W3.4 × L3.7 × H0.4 SA010M733X025T SA010M733X035T eugarpS-yahsiV )DMS(mulatnaT,D595 )DMS(mulatnaT,D495 )laidaR(munimulA-yloPAS49 V01 V01 V3.6 033 033 033 001.0 Ω 540.0 Ω 520.0 Ω Am0401 Am0632 Am0053 L2.7 × W6 × H1.4 01 × 5.01 T2D0100X733D595 T2R6100X733D495 PBF3R60X733AS49 )DMS(R5XcimareC,temeKV 61 V3.6 200.0 Ω —e sac0121 mm5223 CAP4M601C0121C CAP9K674C0121C cimareC,ataruMR 5X) DMS(V 3.6 V3.6 V61 V61 001 200.0 Ω —e sac0121 mm5223 ]1[ 1 ]1[ 1 ]1[ 1 ]1[ M701J06RE23MRG M674J06RE23MRG K622C16RE23MRG K601C16RD23MRG cimareC,KDTR 5X) DMS(V 3.6 V3.6 V61 V61 001 200.0 Ω —e sac0121 mm5223 1 ]1[ 1 ]1[ 1 ]1[ 1 ]1[ TM701J0R5X5223C TM674J0R5X5223C TM622C1R5X5223C TM601C1R5X5223C [1] A ceramic capacitor may be used to compliment electrolytic types at the input to further reduce high-frequency ripple curren t.

For technical support and further information visit http://power.ti.com Adjusting the Output Voltage of the PTH03060W & PTH05060W Wide-Output Adjust Power Modules The Vo Adjust control (pin 4) sets the output voltage of the PTH03060W and PTH05060W products to a value higher than 0.8 V. The adjustment range of the PT03060W (3.3-V input) is from 0.8 V to 2.5 V 1, and the PTH05060W (5-V input) from 0.8 V to 3.6 V. For an output voltage other than 0.8 V a single external resistor, R set, must be connected directly between the Vo Adjust and GND pins 2. Table 1-1 gives the preferred value of the external resistor for a number of standard voltages, along with the actual output voltage that this resistance value provides. For other output voltages the value of the required resistor can either be calculated using the following formula, or simply selected from the range of values given in Table 1-2. Figure 1-1 shows the placement of the required resistor. Rset = 10 kΩ · 0.8 V – 2.49 kΩVout – 0.8 V Figure 1-1; Vo Adjust Resistor Placement Notes: 1. Modules that operate from a 3.3-V input bus should not be adjusted higher than 2.5 V. 2. Use a 0.1 W resistor. The tolerance should be 1 %, with temperature stability of 100 ppm/°C (or better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 4 and 7 using dedicated PCB traces. 3. Never connect capacitors from V o Adjust to either GND or Vout. Any capacitance added to the Vo Adjust pin will affect the stability of the regulator.

0.800 Open

0.825318 k Ω 0.850 158 k Ω 0.875104 k Ω 0.900 77.5 k Ω 0.92561.5 k Ω 0.950 50.8 k Ω 0.97543.2 k Ω 1.000 37.5 k Ω 1.02533.1 k Ω 1.050 29.5 k Ω 1.07526.6 k Ω 1.100 24.2 k Ω 1.12522.1 k Ω 1.150 20.4 k Ω 1.17518.8 k Ω 1.200 17.5 k Ω 1.22516.3 k Ω 1.250 15.3 k Ω 1.27514.4 k Ω 1.300 13.5 k Ω 1.32512.7 k Ω 1.350 12.1 k Ω 1.37511.4 k Ω 1.400 10.8 k Ω 1.42510.3 k Ω 1.450 9.82 k Ω 1.4759.36 k Ω 1.50 8.94 k Ω 1.55 8.18 k Ω 1.60 7.51 k Ω 1.656.92 k Ω 1.70 6.4 k Ω 1.755 .93 k Ω 1.80 5.51 k Ω 1.855 .13 k Ω 1.90 4.78 k Ω 1.954.47 k Ω Vout (Standard) R set (Pref’d Value) V out (Actual) 3.3 V 1 698 Ω 3.309V 2.5 V 2.21 k Ω 2.502 V 2 V 4.12 k Ω 2.010 V 1.8 V 5.49 k Ω 1.803 V 1.5 V 8.87 k Ω 1.504 V 1.2 V 17.4 k Ω 1.202 V 1 V 36.5 k Ω 1.005 V 0.8 V Open 0.8 V Table 1-1; Preferred Values of R set for Standard Output Voltages PTH03060W & PTH05060W Table 1-2; Output Voltage Set-Point Resistor Values Va Req’dR set Va Req’dR set 2.00 4.18 k Ω 2.053.91 k Ω 2.10 3.66 k Ω 2.153.44 k Ω 2.20 3.22 k Ω 2.253.03 k Ω 2.30 2.84 k Ω 2.352.67 k Ω 2.40 2.51 k Ω 2.452.36 k Ω 2.50 2.22 k Ω 2.55 2.08 k Ω 2.60 1.95 k Ω 2.651.83 k Ω 2.70 1.72 k Ω 2.751.61 k Ω 2.80 1.51 k Ω 2.851.41 k Ω 2.90 1.32 k Ω 2.951.23 k Ω 3.00 1.15 k Ω 3.051.07 k Ω 3.10 988 Ω 3.15914 Ω 3.20 843 Ω 3.25775 Ω 3.30 710 Ω 3.35647 Ω 3.40 587 Ω 3.455 29 Ω 3.50 473 Ω 3.55 419 Ω 3.60 367 Ω VIN C IN 330 µF (Required) + C OUT 330 µF (Optional) GND VOUT Vo Sense R SET 0.1 W 1 % PTH05060W

For technical support and further information visit http://power.ti.com PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Features of the PTH Family of Non-Isolated Wide Output Adjust Power Modules Point-of-Load Alliance The PTH family of non-isolated, wide-output adjust power modules from T exas Instruments are optimized for applications that require a flexible, high performance module that is small in size. These products are part of the “Point-of-Load Alliance” (POLA), which ensures compatible footprint, interoperability and true second sourcing for customer design flexibility. The POLA is a collaboration between T exas Instruments, Artesyn T ech- nologies, and Astec Power to offer customers advanced non-isolated modules that provide the same functionality and form factor. Pr oduct series covered by the alliance includes the PTHxx050W (6 A), PTHxx060W (10 A), PTHxx010W (15/12 A), PTHxx020W (22/18 A), and the PTHxx030W (30/26 A). From the basic, “Just Plug it In” functionality of the 6-A modules, to the 30-A rated feature-rich PTHxx030W, these products were designed to be very flexible, yet simple to use. The features vary with each product. T able 3-1 provides a quick reference to the available features by product and input bus voltage. Table 3-1; Operating Features by Series and Input Bus Voltage For simple point-of-use applications, the PTHxx050W provides operating features such as an on/off inhibit, output voltage trim, pre-bias startup (3.3/5-V input only), and over-current protection. The PTHxx060W (10 A), and PTHxx010W (15/12 A) include an output voltage sense, and margin up/down controls. Then the higher output current, PTHxx020W and PTHxx030W products incorporate over-temperature shutdown protection. All of the products referenced in T able 3-1 include Auto- T rack™. This is a feature unique to the PTH family, and was specifically designed to simplify the task of se- quencing the supply voltage in a power system. These and other features are described in the following sections. Soft-Start Power Up The Auto-T rack feature allows the power-up of multiple PTH modules to be directly controlled from the Track pin. However in a stand-alone configuration, or when the Auto-T rack feature is not being used, the Track pin should be directly connected to the input voltage, V in (see Figure 3-1). Figure 3–1 5 V C IN 1,000 µF C OUT 330 µF GND GND 3.3 V R SET, 698Ω

0.1 W, 1 %

When the Track pin is connected to the input voltage the Auto-T rack function is permanently disengaged. This allows the module to power up entirely under the control of its internal soft-start circuitry. When power up is under soft-start control, the output voltage rises to the set-point at a quicker and more linear rate. Figure 3–2 Vin (1 V/Div) Vout (1 V/Div) Iin (5 A/Div) HORIZ SCALE: 5 ms/Div Series Input Bus I OUT

12 V 6 A  

Adjust (Trim) Thermal Shutdown Pre-Bias Startup Margin Up/Down Auto-Track™ PTHxx030 On/Off Inhibit PTHxx010 PTHxx020 PTHxx060 PTHxx050

For technical support and further information visit http://power.ti.com PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Figure 3–6; Simultaneous Power Up with Auto-Track Control PTH05010W Track VIN VO GNDInhibit PTH05020W Track VIN VO GNDInhibit

7 C OUT

Vo2 =1.8 V Vo1 =3.3 V +5 V 0 V On/Off Control 1 = Power Down 0 = Power Up BSS138 0.1 µF 100 k R 2 698 R 3 5k49 Figure 3–5; Sequenced Power Up & Power Down Using Auto-Track Figure 3–7; Simultaneous Power Down with Auto-Track Control Vo1 (1 V/Div) Vo2 (1 V/Div) On/Off Input (5 V/Div) HORIZ SCALE: 10 ms/Div Vo1 (1 V/Div) Vo2 (1 V/Div) On/Off Input (5 V/Div) HORIZ SCALE: 10 ms/Div

For technical support and further information visit http://power.ti.com PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Margin Up/Down Controls The PTHxx060W, PTHxx010W, PTHxx020W, and PTHxx030W products incorporate Margin Up and Margin Down control inputs. These controls allow the output voltage to be momentarily adjusted 1, either up or down, by a nominal 5 %. This provides a convenient method for dynamically testing the operation of the load circuit over its supply margin or range. It can also be used to verify the function of supply voltage supervisors. The ±5 % change is applied to the adjusted output voltage, as set by the external resistor, R set at the Vo Adjust pin. The 5 % adjustment is made by pulling the appropriate margin control input directly to the GND terminal 2. A low-leakage open-drain device, such as an n-channel MOSFET or p-channel JFET is recommended for this purpose 3. Adjustments of less than 5 % can also be accom- modated by adding series resistors to the control inputs. The value of the resistor can be selected from T able 3-2, or calculated using the following formula. Up/Down Adjust Resistance Calculation T o reduce the margin adjustment to something less than 5 %, series resistors are required (See R D and R U in Figure 3-8). For the same amount of adjustment, the resistor value calculated for R U and R D will be the same. The formulas is as follows. RU or RD = 499 – 99.8 k Ω ∆% Where ∆ % = The desired amount of margin adjust in percent. Notes: 1.The Margin Up* and Margin Dn* controls were not intended to be activated simultaneously. If they are their affects on the output voltage may not completely cancel, resulting in the possibility of a slightly higher error in the output voltage set point. 2.The ground reference should be a direct connection to the module GND at pin 7 (pin 1 for the PTHxx050). This will produce a more accurate adjustment at the load circuit terminals. The transistors Q 1 and Q2 should be located close to the regulator. 3.The Margin Up and Margin Dn control inputs are not compatible with devices that source voltage. This includes TTL logic. These are analog inputs and should only be controlled with a true open-drain device (preferably a discrete MOSFET transistor). The device selected should have low off-state leakage current. Each input sources 8 µA when grounded, and has an open-circuit voltage of 0.8 V . Figure 3–8; Margin Up/Down Application Schematic Table 3-2; Margin Up/Down Resistor Values % Adjust R U / RD 5 0.0 k Ω 4 24.9 k Ω 3 66.5 k Ω 2 150.0 k Ω 1 397.0 k Ω C out +C in VIN GND MargDn L O A D Q 2 +VOUT Q 1 MargUp +Vo R D R U PTH05010W (Top View ) 10 9 8 543 GND R SET

For technical support and further information visit http://power.ti.com PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Pre-Bias Startup Capability Only selected products in the PTH family incorporate this capability. Consult T able 3-1 to identify which products are compliant. A pre-bias startup condition occurs as a result of an external voltage being present at the output of a power module prior to its output becoming active. This often occurs in com- plex digital systems when current from another power source is backfed through a dual-supply logic component, such as an FPGA or ASIC. Another path might be via clamp diodes as part of a dual-supply power-up sequencing arrangement. A prebias can cause problems with power modules that incorporate synchronous rectifiers. This is because under most operating conditions, these types of modules can sink as well as source output current. The PTH family of power modules incorporate synchro- nous rectifiers, but will not sink current during startup or whenever the Inhibit pin is held low. However, to ensure satisfactory operation of this function, certain conditions must be maintained.

2 Figure 3-9 shows an application

demonstrating the pre-bias startup capability. The start- up waveforms are shown in Figure 3-10. Note that the output current from the PTH03010W (I o) shows negli- gible current until its output voltage rises above that backfed through diodes D 1 and D2. Note: The pre-bias start-up feature is not compatible with Auto-Track. When the module is un der Auto-Track control, it will sink current if the output voltage is below that of a back-feeding source. To ensure a pre- bias hold-off one of two approaches must be followed when input power is applied to the module. The Auto-Track function must either be disabled 3, or the module’s output held off (for at least 50 ms) using the Inhibit pin. Either approach ensures that the Track pin volt- age is above the set-point voltage at start up. Notes 1.Startup includes the short delay (approx. 10 ms) prior to the output voltage rising, followed by the rise of the output voltage un der the module’s internal soft-start control. Startup is complete when the output voltage has risen to either the set-point voltage or the voltage at the Track pin, whichever is lowest. 2.T o ensure that the regulator does not sink current when power is first applied (even with a ground signal applied to the Inhibit control pin), the input voltage must always be greater than the output voltage throughout the power-up and power-down sequence. 3.The Auto-T rack function can be disabled at power up by immediately applying a voltage to the module’s Track pin that is greater than its set-point voltage. This can be easily accomplished by connecting the Track pin to V in. Vo = 2.5 V VIN = 3.3 V R 2 2k21 ASIC VCORE VCCIO Io PTH03010W Track V IN V O GNDInhibit Vadj Sense C IN 330 µF + C OUT 330 µF Figure 3–9; Application Circuit Demonstrating Pre-Bias Startup Vin (1 V/Div) Vo (1 V/Div) Io (5 A/Div) HORIZ SCALE: 5 ms/Div Figure 3–10; Pre-Bias Startup Waveforms

For technical support and further information visit http://power.ti.com PTH Series of Wide-Output Adjust Power Modules (3.3/5-V Input) Remote Sense The PTHxx060W, PTHxx010W, PTHxx020W, and PTHxx030W products incorporate an output voltage sense pin, V o Sense. The Vo Sense pin should be connected to Vout at the load circuit (see data sheet standard appli- cation). A remote sense improves the load regulation performance of the module by allowing it to compensate for any ‘IR’ voltage drop between itself and the load. An IR drop is caused by the high output current flowing through the small amount of pin and trace resistance. Use of the remote sense is optional. If not used, the V o Sense pin can be left open-circuit. An internal low- value resistor (15- Ω or less) is connected between the Vo Sense and Vout. This ensures the output voltage remains in regulation. With the sense pin connected, the difference between the voltage measured directly between the Vout and GND pins, and that measured from Vo Sense to GND, is the amount of IR drop being compensated by the regulator. This should be limited to a maximum of 0.3 V . Note: The remote sense feature is not designed to compensate for the forward drop of non-linear or frequency dependent components that may be placed in series with the converter output. Examples include OR-ing diodes, filter inductors, ferrite beads, and fuses. When these components are enclosed by the remote sense connection they are effectively placed inside the regulation control loop, which can adversely affect the stability of the regulator.

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PTH03060WAD ACTIVE DIP MOD ULE EUW 10 36 TBD Call TI Call TI PTH03060WAH ACTIVE DIP MOD ULE EUW 10 36 TBD Call TI Level-1-235C-UNLIM PTH03060WAS ACTIVE DIP MOD ULE EUY 10 36 TBD Call TI Level-1-235C-UNLIM PTH03060WAST ACTIVE DIP MOD ULE EUY 10 250 TBD Call TI Level-1-235C-UNLIM PTH03060WAZ ACTIVE DIP MOD ULE EUY 10 36 Pb-Free (RoHS) Call TI Level-3-260C-168 HR PTH03060WAZT ACTIVE DIP MOD ULE EUY 10 250 Pb-Free (RoHS) Call TI Level-3-260C-168 HR (1)The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br):TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. PACKAGE OPTION ADDENDUM www.ti.com 25-Oct-2005 Addendum-Page 1

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