PTQB425080N2AD

PTQB425080 TI | Alldatasheet

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a remote On/Off control with optional logic polarity, and an undervoltage lockout (UVLO). Protection (OCP) and over-temperature protection (OTP). To compliment T2-POL products, optional a SmartSync compatible clock drive and a AutoTrack power-up sequencing manager The module is fully integrated for stand-alone operation, and require no additional components. STANDARD APPLICATION Please be aware that an important notice concerning availability, standard warranty, and use in critical

applications

sheet. PRODUCTION DATA information is current as of publication date. Copyright 2006 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

www.ti.com ABSOLUTE MAXIMUM RATING PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION For the most current package and ordering information, see the Package Option Addendum at the end of this datasheet, or see the TI website at www.ti.com. PART NUMBERING SCHEME Input Output Output Voltage Enable Electrical Options Pin Style Voltage Current PTQB 080 N A D V 25A 080 V N Negative Standard D Through-hole, Pb-free P Positive SmartSync Clock Drive and AutoTrack Enable UNIT T A Operating Temperature Over V I Range C to C (1) Range V Continuous voltage V Maximum Input Voltage MAX Peak voltage for 100 ms duration 100 V P V I V Maximum Output Power 200 W MAX T S Storage Temperature C to 125 C Per Mil-STD-883, Method 2002.3 ms, AD Suffix 250 G Mechanical Shock Sine, mounted Per Mil-STD-883, Method 2007.2 20-2000 Hz, AD Suffix G Mechanical Vibrarion PCB mounted Weight grams Flammability Meets UL 94V-O (1) See SOA curves or consult factory for appropriate derating. Submit Documentation Feedback

www.ti.com ELECTRICAL CHARACTERISTICS PTQB425080 PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 (Unless otherwise stated, T A =25 V I V O C O µ and I O I O max PARAMETER TEST CONDITIONS MIN TYP MAX UNIT I O Output Current Over V I range A V I Input Voltage Range Over I O range V V O tol Output Voltage Tolerance Over V I and I O range 5.4 10.5 V V I V 0.17 V/V Reg line Line Regulation V I V O 9.5 V Reg load Load Regulation Over I O range mV/A η Efficiency I O I O max 93% V R V O Ripple (pk-pk) MHz bandwidth 100 mV pp I TRIP Overcurrent Threshold Shutdown, followed by auto-recovery A OTP Over Temperature Temperature Measurement at thermal sensor. Hysteresis 125 C Protection C nominal. f s Switching Frequency Over V I range 275 kHz V OFF V I decreasing, I O A 32.5 UVLO Undervoltage Lockout V V HYS Hysteresis 1.5 On/Off Input: Negative Enable V IH Input High Voltage 2.4 Open (1) Referenced to V I V V IL Input Low Voltage 0.2 0.8 I IL Input Low Current 0.3 mA On/Off Input: Positive Enable V IH Input High Voltage 4.5 Open (1) Referenced to V I V V IL Input Low Voltage 0.2 0.8 I IL Input Low Current 0.5 mA I ISB Standby Input Current Output disabled (pin status set to Off) mA C I External Input Capacitance Between I and V I 100 µ F C O External Output Between O and V O 3000 µ F Capacitance Isolation Voltage Input-to-output and input-to-case 1500 Vdc Isolation Capacitance Input-to-output 500 pF Isolation Resistance Input-to-output M Ω Signal Amplitude V pk-pk SmartSync Clock Drive TTL Output signal for f ss (pin synchronizing POL modules Signal Frequency 275 kHz (1) The Remote On/Off input has an internal pull-up and may be controlled with an open collector (drain) interface. An open circuit correlates to a logic high. Consult the application notes for interface considerations. Submit Documentation Feedback

www.ti.com Track SmartSync On/Off +VI −VI +VO −VO On /Off +VI −VI +VO −VO PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 TERMINAL FUNCTIONS TERMINAL

DESCRIPTION

NO. The positive input for the module with respect to I When powering the module from a negative input voltage, I (1) this input is connected to the input source ground. The negative input supply for the module, and the 0-V reference for the enable input. When powering the module V I (1) from a positive source, this input is connected to the input source return. This input controls the On/Off status of the output voltage. It is either driven low V I potential), or left open-circuit. Remote On/Off For units identified with the N (negative logic) option, applying a logic low to this pin will enable the output. And for units identified with the P (positive logic) option, the output will be disabled. This is the positive power output with respect to V O It is isolated from the input power pins and produces a valid O output voltage approximately ms before the voltage at the Track terminal is allowed to rise. This provides the required standby power source to any downstream nonisolated modules in power-up sequencing applications. This is the output power return for both the O output voltage. This terminal should be connected to the common V O of the load circuit. This terminal may be used in power-up sequencing modules, powered from the converter O output. The converter Track control has an internal, Enable open-collector transistor, which holds the voltage close to V O potential for approximately ms after the O (Optional) output is in regulation. Following this delay, the Track voltage rises simultaneously with the output voltages of all other modules controlled by Auto-Track. See Application Information for more details. SmartSync This terminal sources a 275kHz clock signal that can be used to synchronize the switching frequency of multiple Clock Drive downstream point-of-load power modules. Frequency synchronization eliminates beat frequencies and reduces (Optional) the external filtering requirement. See Application Information for more details. (1) These functions indicate signals electrically common with the input. PTQB425080x3 PTQB425080x2 Submit Documentation Feedback

www.ti.com TYPICAL CHARACTERISTICS PTQB425080 0 5 10 15 20 VI 36 V 48 V 75 V 100 IO − Output Current − A η − Efficiency − % VI = 36 VVI = 75 V VI VI = 48 V VI 36 V 48 V 75 V 5 10 15 20 25 IO − Output Current − A PD − Power Dissipation − W VI = 36 V VI = 75 V VI = 48 V VI 5 10 15 20 25 LFM 200 400 600 100 Natural Convection IO − Output Current − A TA − Ambient Temperature − °C

200 LFM

100 LFM

600 LFM

IO − Output Current − A VO − Output Voltage − V VI = 36 V VI = 75 V VI = 48 V VI = 60 V VI IO 0 A 12 A 25 A 42 66 72 7848 54 60 VI − Input Voltage − V VO − Output Voltage − V IO = 0 A IO = 25 A IO = 12 A PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 All data listed in the graphs below have been developed from actual products tested at This data is considered typical data for the DC-DC Converter. SOA curves represent operating conditions at which internal components are at or below manufacturer's maximum rated operating temperature. For Figure Safe Operating Area, V I EFFICIENCY POWER DISSIPATION AMBIENT TEMPERATURE vs vs vs LOAD CURRENT LOAD CURRENT LOAD CURRENT Figure Figure Figure LINE REGULATION LOAD REGULATION Figure Figure Submit Documentation Feedback

www.ti.com APPLICATION INFORMATION Operating faults, these converters incorporate output overcurrent protection. Applying a load to the output that exceeds the converter's overcurrent threshold (see applicable specification) will cause the output voltage to momentarily fold back, and then shut down. Following shutdown the module will periodically attempt to automatically recover by initiating a soft-start power-up. This is often described as a hiccup mode of operation, whereby the module continues in the cycle of successive shutdown and power up until the load fault is removed. Once the fault is removed, the converter automatically recovers and returns to normal operation. Overtemperature protection is provided by an internal temperature sensor, which closely monitors the temperature of the converter s printed circuit board (PCB). If the sensor exceeds a temperature of approximately 125 the converter will shut down. The converter will then automatically restart when the sensed temperature drops back to approximately When operated outside its recommended thermal derating envelope (see data sheet SOA curves), the converter will typcially cycle on and off at intervals from a few seconds to one or two minutes. This is to ensure that the internal components are not permanently damaged from excessive thermal stress. The Undervoltage lockout (UVLO) is designed to prevent the operation of the converter until the input voltage is at the minimum input voltage. This prevents high start-up current during normal power-up of the converter, and minimizes the current drain from the input source during low input voltage conditions. The UVLO circuitry also overrides the operation of the Remote On/Off control. The converter incorporates electrical isolation between the input terminals (primary) and the output terminals (secondary). All converters are production tested to a withstand voltage of 1500 VDC. This specification complies with UL60950 and EN60950 and the requirements for operational isolation. This allows the converter to be configured for either a positive or negative input voltage source. The data sheet Pin Descriptions section provides guidance as to the correct reference that must be used for the external control signals. The converter is not internally fused. For safety and overall system protection, the maximum input current to the converter must be limited. Active or passive current limiting can be used. Passive current limiting can be a fast acting fuse. A 125-V fuse, rated no more than is recommended. Active current limiting can be implemented with a current limited Hot-Swap controller. Airflow may be necessary to ensure that the module can supply the desired load current in environments with elevated ambient temperatures. The required airflow rate may be determined from the Safe Operating Area (SOA) thermal derating chart (see typical characteristics). Submit Documentation Feedback

www.ti.com Using the Remote On/Off Function on the PTQB425080 Series of DC/DC Converters Negative Output Enable Option) Positive Output Enable Option) PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 For control, the PTQB425080 series of DC/DC converters incorporate a Remote On/Off control (pin 2). This feature can be used to switch the module off without removing the applied input source voltage. When placed in the Off state, the standby current drawn from the input source is typically reduced to mA. Models using the negative enable option, the Remote On/Off (pin control must be driven to a logic low voltage for the converter to produce an output. This is accomplished by either permanently connecting pin to V I (pin 3), or driving it low with an external control signal. Table shows the input requirements of pin for those modules with the NEN option. Table On/Off Control Requirements for Negative Enable PARAMETER MIN TYP MAX V IH Disable 2.4 V V V IL Enable 0.2 V 0.8 V V o/c Open-Circuit V V I I Pin at V I 0.75 mA For those models with the positive enable option, leaving pin open circuit, (or driving it to an equivalent logic high voltage), will enable the converter output. This allows the module to produce an output voltage whenever a valid input source voltage is applied to I with respect to V I If a logic-low signal is then applied to pin the converter output is disabled. Table gives the input requirements of pin for modules with the PEN option. Table On/Off Control Requirements for Positive Enable PARAMETER MIN TYP MAX V IH Enable 4.5 V V V IL Disable 0.2 V 0.8 V V o/c Open-Circuit V V I I Pin at V I 0.5 mA Notes: The Remote On/Off control uses V I (pin as its ground reference. All voltages are with respect to V I An open-collector device (preferably a discrete transistor) is recommended. A pull-up resistor is not required. If one is added the pull-up voltage should not exceed Caution: Do not use a pull-resistor to I (pin 1). The remote On/Off control has a maximum input voltage of Exceeding this voltage will overstress, and possibly damage, the converter The Remote On/Off pin may be controlled with devices that have a totem-pole output. This is provided the output high level voltage OH meets the module's minimum V IH specified in Table If a TTL gate is used, a pull-up resistor may be required to the logic supply voltage. The converter incorporates an undervoltage lockout (UVLO). The UVLO keeps the converter off until the input voltage is close to the minimum specified operating voltage. This is regardless of the state of the Remote On/Off control. Consult the product specification for the UVLO input voltage thresholds. Submit Documentation Feedback

www.ti.com

2 Remote On/Off

1 = Disable PTQB425080P −VI −VI UDG−06085 t − Time − 4 ms/div VO (2 V/div) Q 1 VGS (2 V/div) Simultaneous Power-Up Sequencing Using AutoTrack Control (Optional Feature) PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 Figure Recommended Control for Remote On/Off Input Turn-On: With a valid input source voltage applied, the converter produces a regulated output voltage within ms of the output being enabled. Figure shows the output response of the PTQB425080P following the removal of the logic-low signal from the Remote On/Off (pin 2); see Figure This corresponds to the drop in V GS in Figure Although the rise-time of the output voltage is short <10 ms), the indicated delay time will vary depending upon the input voltage and the module s internal timing. The waveforms were measured with VDC input voltage, and a 10-A resistive load. Figure Power Up The PTQB425080 bus converter will provide the input power and coordinate the power-up sequencing to two or more non-isolated, Auto-Track compliant power modules. Figure shows the PTQB425080 converter (U1) configured to provide both the input source and the power-up sequence timing to two wide-nput non-isolated modules. The example shows a simplified block diagram of two PTH08T220W modules (U2 and U3), each rated for up to A of output current. In this case, the number of downstream modules, and their respective output voltage and load current rating, is only limited by the amount of current available at the O output (25 A maximum). In this example, they are set to 3.3 V (R2 1.21 k Ω and 1.8 V (R3 4.78 k Ω respectively. Figure shows the power-up waveforms from when the Track control of all three modules are simply connected together. The PTQB425080 converter (U1) provides the required intermediate voltage from the O bus output to power the downstream modules, while holding the common Track control at ground potential. After allowing times for and to initialize, removes the ground from the Track control, allowing this voltage to rise. The outputs from the two nonisolated modules then rise simultaneously to their respective set-point voltages. Submit Documentation Feedback

www.ti.com PTQB425080N On/Off PTH08T220W Inhibit 3,4 GND Track 2 5 PTH08T220W Inhibit 3,4 GND Track 2 5 UDG−06088 C I 100 µF +VI −VI VPOL 1 (3.3 V) VPOL 2 (1.8 V) VO Bus (8 V) 100 µF 470 µF 470 µF R3 4.78 kΩ 1.21 kΩ 470 µF 470 µF +VI −VI −VO +VO VO Adj VO Adj VI VI VO VO Track VO Bus (U1) (5 V/div) VO Track (1 V/div) VPOL 1 (U2) (1 V/div) VPOL 2 (U3) (1 V/div) t − Time − 40 ms/div Delay Time PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 Figure Power-Up Sequencing Using AutoTrack Control Figure AutoTrack Control Waveform Submit Documentation Feedback

www.ti.com Synchronizing Multiple POL Modules using SmartSync Clock Drive PTQB425080N On/Off PTH08T220W Inhibit 3,4 GND SmartSync 2 5 PTH08T220W Inhibit 3,4 GND SmartSync 2 5 Inverter C I 100 µF +VI −VI VPOL 1 (3.3 V) VPOL 2 (1.2 V) UDG−06087 VO Bus (8 V) 100 µF 470 µF 470 µF R3 12.1 kΩ 1.21 kΩ 470 µF 470 µF VO Adj VO Adj fCLK = 275 kHz +VI −VI SmartSync −VO +VO PTQB425080 SLTS269A DECEMBER 2006 REVISED JANUARY 2007 The PTQB425080 provides a 275 kHz SmartSync clock signal that may be used to synchronize multiple downstream non-isolated modules to a common frequency. Figure shows a simplified block diagram of the PTQB425080 clock signal driving the SmartSync input of two PTH08T220W modules. Synchronizing modules powered from the same bus, eliminates beat frequencies reflected back to the input supply, and also reduces EMI filtering requirements. These are the benefits of Smart Sync. Power modules can also be synchronized out of phase to minimize source current loading and minimize input capacitance requirements. Figure also shows module synchronized 180 out of phase with module using an inverter circuit. Figure 10. Synchronizing Modules Powered from the Same Bus Submit Documentation Feedback

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PTQB425080N2AD ACTIVE DIP MOD ULE EBY 5 9 Pb-Free (RoHS) Call TI N / A for Pkg Type PTQB425080N3AD ACTIVE DIP MOD ULE EBY 7 9 Pb-Free (RoHS) Call TI N / A for Pkg Type PTQB425080P2AD ACTIVE DIP MOD ULE EBY 5 9 Pb-Free (RoHS) Call TI N / A for Pkg Type PTQB425080P3AD ACTIVE DIP MOD ULE EBY 7 9 Pb-Free (RoHS) Call TI N / A for Pkg Type (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), Pb-Free (RoHS Exempt), 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. Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. 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 15-Jan-2007 Addendum-Page 1

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