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Data Sheet June 29, 2009
KNW013-020 (Sixteenth-Brick) Power Modules: 36 -75Vdc Input; 3.3Vdc to 5.0Vdc Output; 13A to 20A Output Current
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z versions) Compliant to RoHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) Delivers up to 20A output current 5V(13A), 3.3V(20A) High efficiency - 91% at 3.3V full load Small size and low profile: 33.0 mm x 22.9 mm x 10.2 mm (1.30 in x 0.9 in x 0.40 in) Industry standard DOSA footprint -20% to +10% output voltage adjustment trim Remote on/off Remote sense No reverse current during output shutdown Over temperature protection (latching) Output overcurrent/overvoltage protection (latching) Wide operating temperature range (-40C to 85C) 2250 Vdc Isolation tested in compliance with IEEE 802.3 PoE standards Meets the voltage isolation requirements for ETSI 300-132-2 and complies with and is licensed for Basic Insulation rating per EN60950-1 UL*Recognized to UL60950-1, CAN/CSA C22.2 No.60950-1, and EN60950-1(VDE 0805-1) Licensed CE mark meets 2006/95/EC directive ISO** 9001 and ISO 14001 certified manufacturing facilities
Applications
Distributed power architectures Wireless networks Access and optical networking equipment including Power over Ethernet (PoE) Enterprise networks Latest generation IC's (DSP, FPGA, ASIC) and Microprocessor powered applications
Options
Negative Remote On/Off logic Surface Mount (Tape and Reel, -SR Suffix) Over current/Over temperature/Over voltage protections (auto-restart) Shorter lead trim
Description
The KNW (Sixteenth-brick) series power modules are isolated dc-dc converters that operate over a wide input voltage range of 36 to 75Vdc and provide a single precisely regulated output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency, typical efficiency of 91% for 3.3V/20A. These open frame modules are available either in surface-mount (-SR) or in through-hole (TH) form.
IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated. Document No: DS08-009 ver. 1.01 * UL is a registered trademark of Underwriters Laboratories, Inc. PDF name: knw013-020_ds.pdf CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. This product is intended for integration into end-use equipment. All of the required procedures of end-use equipment should be followed. ** ISO is a registered trademark of the International Organization of Standards
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Parameter Operating Input Voltage Continuous Transient (100 ms) Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature I/O Isolation voltage (100% Factory Hi-Pot tested) All All All All All VIN VIN,trans TA Tstg -0.3 -0.3 -40 -55 80 100 85 125 2250 Vdc Vdc C C Vdc Device Symbol Min Max Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Operating Input Voltage Maximum Input Current (VIN= VIN, min to VIN, max, IO=IO, max) Input No Load Current (VIN = VIN, nom, IO = 0, module enabled) Input Stand-by Current (VIN = VIN, nom, module disabled) Inrush Transient Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1H source impedance; VIN, min to VIN, max, IO= IOmax ; See Test configuration section) Input Ripple Rejection (120Hz) EMC, EN55022 Device All All All All All All Symbol VIN IIN,max IIN,No load IIN,stand-by It 30
2
Min 36
Typ 48 1.7 45 6
Max 75 2.4
Unit Vdc Adc
mA 8 0.1 mA
2
As mAp-p
All
60 See EMC Considerations section
dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architectures. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a time-delay fuse with a maximum rating of 5 A (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer's data sheet for further information.
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Electrical Specifications (continued)
Parameter Output Voltage Set-point (VIN=VIN, min, IO=IO, max, TA=25C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Output Regulation Line (VIN=VIN, min to VIN, max) Load (IO=IO, min to IO, max) Temperature (Tref=TA, min to TA, max) Output Ripple and Noise on nominal output (VIN=VIN, nom ,IO= IO, max , TA=TA, min to TA, max) RMS (5Hz to 20MHz bandwidth) Peak-to-Peak (5Hz to 20MHz bandwidth) External Capacitance Rated Output Current Output Current Limit Inception (Hiccup Mode ) (VO= 90% of VO, set) Output Short-Circuit Current (VO250mV) ( Hiccup Mode ) Efficiency VIN= VIN, nom; TA=25C; IO=IO, max ; VO= VO,set Switching Frequency Dynamic Load Response (dIO/dt=0.1A/s; VIN = VIN, nom; TA=25C) Load Change from IO= 50% to 75% or 25% to 50% of IO,max; Peak Deviation Settling Time (VO<10% peak deviation) (dIO/dt=1.0A/s; VIN = VIN, nom; TA=25C) Load Change from IO= 50% to 75% or 25% to 50% of IO,max; Peak Deviation Settling Time (VO<10% peak deviation) All All Vpk ts 4 200 % VO, set s All 5.0V 3.3V 5.0V 3.3V All All 5.0V 3.3V All CO, max CO, max IO, Rated IO, Rated IO, lim IO, s/c fsw 0 0 115 120 20 91.0 91.0 400 0 25 75 30 100 10,000 20,000 13 20 130 mVrms mVpk-pk F F Adc Adc %IO, Rated %IOmax Arms % % kHz All All All 0.1 0.1 1.0 % VO, set % VO, set % VO, set All VO -3.0 +3.0 % VO, set Device 5.0V 3.3V Symbol VO, set VO, set Min 4.93 3.25 Typ 5.0 3.3 Max 5.07 3.35 Unit Vdc Vdc
All
VO, adj
-20.0
+10.0
% VO, set
All All
Vpk ts

5 200

% VO, set s
Isolation Specifications
Parameter Isolation Capacitance Isolation Resistance I/O Isolation Voltage Device All All All Symbol Ciso Riso All Min 10 Typ 1000 Max 2250 Unit pF M Vdc
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
General Specifications
Parameter Calculated Reliability Based upon Telcordia SR332 Issue 2: Method I, Case 3, (IO=80%IO, max, TA=40C, Airflow = 200 lfm), 90% confidence Device 5.0V 5.0V 3.3V 3.3V Powered Random Vibration (VIN=VIN, min, IO=IO, max, TA=25C, 0 to 5000Hz, 10Grms) Weight All All Symbol MTBF FIT MTBF FIT Min Typ 4,114,000 243.1 4,589,027 217.9 90 15.6 (0.55) Max Unit Hours 10 /Hours Hours 10 /Hours Minutes g (oz.)
9 9
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information.
Parameter Remote On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, signal referenced to VIN- terminal) Negative Logic: device code suffix "1" Logic Low = module On, Logic High = module Off Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On Logic Low - Remote On/Off Current Logic Low - On/Off Voltage Logic High Voltage - (Typ = Open Collector) Logic High maximum allowable leakage current Turn-On Delay and Rise Times (IO=IO, max , VIN=VIN, nom, TA = 25 C) Case 1: On/Off input is set to Logic Low (Module ON) and then input power is applied (delay from instant at which VIN = VIN, min until VO=10% of VO,set) Case 2: Input power is applied for at least 1 second and then the On/Off input is set from OFF to ON (Tdelay = from instant at which VIN=VIN, min until VO = 10% of VO, set) Output voltage Rise time (time for Vo to rise from 10% of VO,set to 90% of VO, set) Output voltage overshoot - Startup IO= IO, max; VIN=VIN, min to VIN, max, TA = 25 C Remote Sense Range Output Overvoltage Protection Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold Hysterisis All All All Vuv/on Vuv/off Vhyst 32.5 30.0 2 34.0 31.0 35.8 33.0 Vdc Vdc Vdc All 5.0V 3.3V VO, limit VO, limit 6.1 4.0
o o
Device
Symbol
Min
Typ
Max
Unit
All All All All
Ion/off Von/off Von/off Ion/off
-0.7

1.0 1.2 5 10
mA V V A
All
Tdelay
13
20
msec
All 5.0 3.3
Tdelay Trise Trise

30 20 6
35 25 10 3 +10 7.0 4.6
msec msec msec % VO, set % VO, set Vdc Vdc
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Characteristic Curves
The following figures provide typical characteristics for the KNW013A0A (5V, 13A) at 25oC. The figures are identical for either positive or negative remote On/Off logic.
95
14 12
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
10 8 6 4 2 0 20 30
NC 0.5 m/s 100 LFM 1.0 m/s 200 LFM 2.0 m/s 400 LFM
85 80 75 70 0 3 6 Vin=48V Vin=36V
Vin=75V
9
12
15
40
50
60
70
O
80
90
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Derating Output Current versus Local Ambient Temperature and Airflow.
OUTPUT VOLTAGE On/Off VOLTAGE VOn/off (V) (2V/div) VO (V) (2V/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (10ms/div)
Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Figure 5. Typical Start-up Using Remote On/Off, negative logic version shown (VIN = VIN,NOM, Io = Io,max).
INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) (20V/div) VO (V) (2V/div)
Io (A) (10A/div)
VO (V) (200mV/div)
TIME, t (200 s /div)
TIME, t (5ms/div)
Figure 3. Transient Response to Dynamic Load Change, 0.1A/S, from 75% to 50% to 75% of full load.
Figure 6. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Characteristic Curves
The following figures provide typical characteristics for the KNW020A0F (3.3V, 20A) at 25 OC. The figures are identical for either positive or negative remote On/Off logic.
95
20
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
15
NC
85 80 75 70 0 5 10 15 Vin=36V Vin=48
Vin=75V
10 5 0 20 30 40
0.5 m/s 100 LFM 1.0 m/s 200 LFM 2.0 m/s 400 LFM
20
50
60
70
O
80
90
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 7. Converter Efficiency versus Output Current.
Figure 10. Derating Output Current versus Local Ambient Temperature and Airflow.
OUTPUT VOLTAGE On/Off VOLTAGE VOn/off (V) (2V/div) VO (V) (1V/div)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (5ms/div)
Figure 8. Typical output ripple and noise (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE VO (V) (100mV/div)
Figure 11. Typical Start-up Using Remote On/Off, negative logic version shown (VIN = VIN,NOM, Io = Io,max).
INPUT VOLTAGE OUTPUT VOLTAGE TIME, t (200 s /div)
Io (A) (5A/div)
VO (V) (1V/div)
VIN (V) (20V/div)
TIME, t (5ms/div)
Figure 9. Transient Response to Dynamic Load Change, 0.1A/S, from 75% to 50% to 75% of full load.
Figure 12. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io = Io,max).
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Test Configurations
TO OSCILLOSCOPE LTEST Vin+ 12H CURRENT PROBE
Design Considerations
Input Filtering
The power module should be connected to a low ac-impedance source. Highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 13, a 33F electrolytic capacitor (ESR<0.7 at 100kHz), mounted close to the power module helps ensure the stability of the unit. Consult the factory for further application guidelines.
BATTERY
CS
220F
33F
E.S.R.<0.1 @ 20C 100kHz Vin-
Safety Considerations
NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 12H. Capacitor CS offsets possible battery impedance. Measure current as shown above.
Figure 13. Input Reflected Ripple Current Test Setup.
COPPER STRIP VO (+) SCOPE V O (-) 0.1uF RESISTIVE LOAD
10uF GROUND PLANE
NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance.
Figure 14. Output Ripple and Noise Test Setup.
Rdistribution
Rcontact Vin+ Vout+
Rcontact
Rdistribution
For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e UL60950-1, CSA C22.2 No.60950-1, and VDE0805-1(IEC60950-1). If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75Vdc), for the module's output to be considered as meeting the requirements for safety extra-low voltage (SELV), all of the following must be true: The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. One VIN pin and one VOUT pin are to be grounded, or both the input and output pins are to be kept floating. The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not appear at the module's output. Note: Do not ground either of the input pins of the module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. All flammable materials used in the manufacturing of these modules are rated 94V-0, or tested to the UL60950 A.2 for reduced thickness. For input voltages exceeding -60 Vdc but less than or equal to -75 Vdc, these converters have been evaluated to the applicable requirements of BASIC INSULATION between secondary DC MAINS DISTRIBUTION input (classified as TNV-2 in Europe) and unearthed SELV outputs. The input to these units is to be provided with a maximum 5 A time-delay fuse in the ungrounded lead.
VIN
VO
RLOAD
Rdistribution
Rcontact VinVout-
Rcontact
Rdistribution
NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance.
Figure 15. Output Voltage and Efficiency Test Setup.
VO. IO Efficiency = VIN. IIN x 100 %
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power = Vo,set x Io,max).
SENSE(+) SENSE(-) VI(+) SUPPL Y II VI(-) VO(+) VO(-) CONT ACT AND DISTRIBUTION LOSSE
Feature Description
Remote On/Off
Two remote on/off options are available. Positive logic turns the module on during a logic high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote On/Off, device code suffix "1", turns the module off during a logic high and on during a logic low.
Vin+
IO
LOAD
CONT ACT RESIST ANCE
Vout+
Ion/off ON/OFF
Figure 17. Circuit Configuration for remote sense.
TRIM
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will only begin to operate once the input voltage is raised above the undervoltage lockout turn-on threshold, VUV/ON. Once operating, the module will continue to operate until the input voltage is taken below the undervoltage turn-off threshold, VUV/OFF.
Von/off
Vin-
Vout-
Figure 16. Remote On/Off Implementation. To turn the power module on and off, the user must supply a switch (open collector or equivalent) to control the voltage (Von/off) between the ON/OFF terminal and the VIN(-) terminal (see Figure 16). Logic low is 0V Von/off 1.2V. The maximum Ion/off during a logic low is 1mA; the switch should be maintaining a logic low level while sinking this current. During a logic high, the typical maximum Von/off generated by the module is 15V, and the maximum allowable leakage current at Von/off = 5V is 1A. If not using the remote on/off feature: For positive logic, leave the ON/OFF pin open. For negative logic, short the ON/OFF pin to VIN(-).
Overtemperature Protection
To provide protection under certain fault conditions, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the thermal reference point o Tref (Figure 19), exceeds 128-133 C (typical) depending on TA and airflow, but the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module can be restarted by cycling the dc input power for at least one second or by toggling the remote on/off signal for at least one second. If the auto-restart option (4) is ordered, the module will automatically restart upon cool-down to a safe temperature.
Output Overvoltage Protection
The output over voltage protection scheme of the modules has an independent over voltage loop to prevent single point of failure. This protection feature latches in the event of over voltage across the output. Cycling the on/off pin or input voltage resets the latching protection feature. If the auto-restart option (4) is ordered, the module will automatically restart upon an internally programmed time elapsing.
Remote Sense
Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (See Figure 17). The voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table:
[VO(+) - VO(-)] - [SENSE(+) - SENSE(-)] 10% VO,set
Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should LINEAGE POWER
Overcurrent Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. If the unit is not configured with auto-restart, then it will latch off following the over current condition. The module can be restarted by cycling the dc input power for at least one second, or by toggling the remote on/off signal for at least one second. If the unit is configured with the 8
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
5.11 x Vo , set x (100 + %) 511 Rtrim - up = - - 10 .22 1.225 x % %
Where
V - V o , set % = desired V o , set x 100
Feature Descriptions (continued)
auto-restart option (4), it will remain in the hiccup mode as long as the overcurrent condition exists; it operates normally, once the output current is brought back into its specified range. The average output current during hiccup is 10% IO, max.
Output Voltage Programming
Trimming allows the output voltage set point to be increased or decreased. This is accomplished by connecting an external resistor between the TRIM pin and either the VO(+) pin or the VO(-) pin.
VIN(+) VO(+) Rtrim-up ON/OFF VOTRIM Rtrim-down VIN(-) VO(-) LOAD
For example, to trim-up the output voltage of 5.0V module (KNW013A0A/A1) by 5% to 5.25V, Rtrim-up is calculated is as follows:
% = 5
5 . 11 x 5 . 0 x (100 + 5 ) 511 - - 10 . 22 R trim - up = 1 . 225 x 5 5
Rtrim -up = 325 .6
The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage protection value shown in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power = Vo,set x Io,max).
Figure 18. Circuit Configuration to Trim Output Voltage. Connecting an external resistor (Rtrim-down) between the TRIM pin and the Vo(-) (or Sense(-)) pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be 1.0%. The following equation determines the required external resistor value to obtain a percentage output voltage change of %
511 R trim - down = - 10 . 22 %
Where % = V o , set - V desired V o , set
x 100
Thermal Considerations
The power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The thermal reference points, Trefx, used in the specifications are shown in Figure 19. For reliable operation, the temperature of both Tref points should o not exceed 125 C.
For example, to trim-down the output voltage of 3.3V module (KNW020A0F/F1) by 8% to 3.036V, Rtrim-down is calculated as follows:
% = 8
511 Rtrim - down = - 10.22 8
R trim - down = 53 . 6
Connecting an external resistor (Rtrim-up) between the TRIM pin and the VO(+) (or Sense (+)) pin increases the output voltage set point. The following equations determine the required external resistor value to obtain a percentage output voltage change of %:
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Thermal Considerations (continued)
Figure 21. KNW020A0F Quasi Peak Conducted Emissions with EN 55022 Class A limits, Figure 20 filter (VIN = VIN,NOM, Io = 0.80 Io,max).
Layout Considerations
Avoid placing copper areas on the outer layer of the application PCB directly underneath the power module in the keep out areas shown in the Recommended Pad Layout figures. Also avoid placing via interconnects underneath the power module in these keep out areas.
Figure 19. Trefx Temperature Measurement Location. Please refer to the Application Note "Thermal Characterization Process For Open-Frame BoardMounted Power Modules" for a detailed discussion of thermal aspects including maximum device temperatures.
EMC Considerations
The KNW series module shall also meet limits of EN55022 Class B with a recommended single stage filter, shown in Figure 20. Please contact your Lineage Power Sales Representative for further information.
Figure 20. Single stage filter used for test results.
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than o o 235 C. Typically, the eutectic solder melts at 183 C, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures.
Surface Mount Information
Pick and Place
The KNW013-020 modules use an open frame construction and are designed for a fully automated assembly process. The pick and place locations on the module are the larger magnetic core or the transistor package as shown in Figure 22. The modules are fitted with a label which meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow o temperatures of up to 300 C. The label also carries product information such as product code, serial number and the location of manufacture.
300
P eak Temp 235oC
250
REFLOW TEMP (C)
200
Heat zo ne max 4oCs -1
Co o ling zo ne 1 oCs -1 -4
150
100
So ak zo ne 30-240s P reheat zo ne max 4oCs -1
Tlim above 205oC
50
0
REFLOW TIME (S)
Figure 22. Pick and Place Locations.
Figure 23. Reflow Profile for Tin/Lead (Sn/Pb) process
240 235
Nozzle Recommendations
The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The recommended nozzle diameter for reliable operation is 5mm. Oblong or oval nozzles up to 11 x 5 mm may also be used within the space available.
MAX TEMP SOLDER (C)
230 225 220 215 210 205 200 0 10 20 30 40 50 60
Tin Lead Soldering
The KNW013-020 power modules (both non-Z and -Z codes) can be soldered either in a conventional Tin/Lead (Sn/Pb) process. The non-Z version of the KNW013-020 modules are RoHS compliant with the lead exception. Lead based solder paste is used in the soldering process during the manufacturing of these modules. These modules can only be soldered in conventional Tin/lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability.
Figure 24. Time Limit Curve Above 205oC for Tin/Lead (Sn/Pb) process
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Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Surface Mount Information (continued)
Lead Free Soldering
The -Z version of the KNW013-020 modules are lead-free (Pb-free) and RoHS compliant, and are both forward and backward compatible in a Pb-free and a SnPb soldering process. The non-Z version of the KNW006/010 modules are RoHS compliant with the lead exception. Lead based solder paste is used in the soldering process during the manufacturing of these modules. These modules can only be soldered in conventional Tin/lead (Sn/Pb) process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability.
Reflow Temp (C)
300 Per J-STD-020 Rev. C Peak Temp 260C 250 Cooling Zone
200 * Min. Time Above 235C 15 Seconds 150 Heating Zone 1C/Second *Time Above 217C 60 Seconds
100
50
0
Reflow Time (Seconds)
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure 25.
Figure 25. Recommended linear reflow profile using Sn/Ag/Cu solder.
Through-Hole Lead-Free Soldering Information
The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, and, for Pb-free solder, the recommended pot temperature is 270C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power representative for more details.
MSL Rating
The KNW013-020 modules have a MSL rating of 1.
Storage and Handling
The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of 30C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40 C, < 90% relative humidity.
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Lineage Power Board Mounted Power Modules: Soldering and Cleaning Application Note (AN04-001). LINEAGE POWER 12
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Mechanical Outline for Surface Mount Module
Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top View
Side View
Bottom View
PIN 1 2 3 4 5 6 7 8 FUNCTION VIN(+) On/Off VIN(-) Vo(-) Sense(-) Trim Sense(+) Vo(+)
LINEAGE POWER
13
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Mechanical Outline for Through-Hole Module
Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top View
Side View
Bottom View
PIN 1 2 3 4 5 6 7 8 FUNCTION VIN(+) On/Off VIN(-) Vo(-) Sense(-) Trim Sense(+) Vo(+)
LINEAGE POWER
14
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Recommended Pad Layout
Dimensions are in and millimeters [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.]
SMT Recommended Pad Layout (Component Side View)
TH Recommended Pad Layout (Component Side View)
LINEAGE POWER 15
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Packaging Details
The Sixteenth-brick SMT versions are supplied in tape & reel as standard. Details of tape dimensions are shown below. Modules are shipped in quantities of 140 modules per reel. Tape Dimensions Dimensions are in millimeters.
LINEAGE POWER
16
Data Sheet June 29, 2009
KNW013-020 Series Power Modules: 36 - 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 1. Device Code
Product Codes KNW013A0A41-SRZ KNW013A0A41Z KNW020A0F41-SRZ KNW020A0F41Z Input Voltage 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) Output Voltage 5.0V 5.0V 3.3V 3.3V Output Current 13A 13A 20A 20A On/Off Logic Negative Negative Negative Negative Connector Type Surface mount Through hole Surface mount Through hole Comcode CC109141438 CC109141446 CC109139267 CC109139275
Table 2. Device Coding Scheme and Options
Characteristic Form Factor Family Designator Input Voltage Output Current Output Voltage Pin Length Action following Protective Shutdown Options On/Off logic Customer Specific Mechanical Features RoHS Character and Position K N W 020A0 F 6 8 4 1 W = Wide Input Voltage Range, 36V -75V 020A0 = 020.0 Amps Rated Output Current F = 3.3 Vout Nominal Omit = No Pin Trim 6 = Pin Length: 3.68 mm 0.25mm , (0.145 in. 0.010 in.) 8 = Pin Length: 2.79 mm 0.25mm , (0.110 in. 0.010 in.) Omit = Latching Mode 4 = Auto-restart following shutdown (Overcurrent/Overvoltage) Omit = Positive Logic 1 = Negative Logic XY S R XY = Customer Specific Modified Code, Omit for Standard Code Omit = Standard open Frame Module SR = Surface mount connections (Tape and Reel) Omit = RoHS 5/6, Lead Based Solder Used Z Z = RoHS 6/6 Compliant, Lead free Definition K = Sixteenth Brick
Ratings
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Asia-Pacific Headquarters Tel: +65 6416 4283
World Wide Headquarters Lineage Power Corporation 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 (Outside U.S.A.: +1-972-284-2626) www.lineagepower.com e-mail: techsupport1@lineagepower.com
Europe, Middle-East and Africa Headquarters Tel: +49 898 780 672 80
India Headquarters Tel: +91 80 28411633
Lineage Power reserves the right to m ake changes to t he product(s) or inf ormation contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. (c) 2008 Lineage Pow er C orporation, (Mesquite, Texas) All I nternational Rights Res erved.
Document No: DS08-009 ver. 1.01 PDF name: knw013-020_ds.pdf

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