TDK-Lambda PFE300SA Series, PFE500SA Series Instruction Manual

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TDK-Lambda

PFE300SA･500SA Series INSTRUCTION MANUAL

PFE300SA･500SA Series

Instruction Manual

BEFORE USING THE POWER SUPPLY UNIT

Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions and warnings before using this product. Incorrect usage could lead to an electrical shock, damage to the unit or a fire hazard.

DANGER

Never use this product in locations where flammable gas or ignitable substances are present. There are risks of igniting these substances and exploding by an arcing.

WARNING

· Do not touch this product or its internal components while circuit is live, or shortly after shut down. high voltage or high temperature present and you may receive an electric shock or burn.

· While this product is operating, keep your hands and face away from it as you may be injured by an unexpected situation.

· Do not make unauthorized changes to this product, otherwise you may receive an electric shock and void your warranty.

· Do not drop or insert anything into the product. It might lead to a failure, fire and electric shock.

· Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound etc.

It might lead fire and electric shock, In such cases, please contact us. Do not attempt repair by yourself, as it is dangerous for the user.

· Do not operate these products in the presence of condensation. It might lead to fire and electric shock.

CAUTION

· This power supply is designed and manufactured for use within an end product such that it is accessible to SERVICE ENGINEERS only.

· Confirm connections to input/output terminals and signal terminals are correct as indicated in the instruction manual before switching on.

· Input voltage, Output current, Output power, ambient temperature, base-plate temperature and ambient humidity should be kept within specifications, otherwise the product will be damaged.

· Do not operate and store this product in an environment where condensation might occur. In such case, waterproof treatment is necessary.

· The equipment has been evaluated for use in a Pollution Degree 2 environment.

· Do not use this product in environment with a strong electromagnetic field, corrosive gas or conductive substances.

· For application which requires very high reliability (Nuclear related equipment, medical equipment, traffic control

equipment, etc.), It is necessary to provide a fail-safe mechanism in the end equipment.

· Do not inject abnormal voltages into the output terminal or signal terminal of this product. The injection of reverse voltage or over voltage exceeding nominal output voltage into the output terminal or signal terminal might cause damage to internal components.

· Never operate the product under overcurrent or short circuit conditions. Insulation failure, or other damages may occur.

· The output voltage of this power supply unit is considered to be a hazardous energy level (The voltage is 2V or more and the

electric power is 240VA or more). It must not be made accessible to users. Protection must be provided for Service Engineers against indirect contact with the output terminals and/or to prevent tools being dropped across them. While working on this product, the AC input power must be switched off and the input, output, +BC, -BC and R terminal voltage should be safe level.

· The application circuits and their parameters are for reference only. Be sure to verify effectiveness of these circuits and their parameters before finalizing the circuit design.

· Use a Fast-Blow external fuse to each module to ensure safe operation and compliance with the safety standards to which it is approved. The recommended input fuse rating within the instructions is as follows: 15A, 250V fast acting fuse. The breaking capacity and voltage rating of this fuse may be subject to the end use application.

C265-04-11D

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PFE300SA INSTRUCTION MANUAL

500SA Series

CAUTION

· The outputs less than 28V model has possibility that hazardous voltage may occur in output terminal depending on failure mode. The output of these products must be protected in the end use equipment to maintain SELV.

· 48V output model are considered non-SELV. End equipment manufacturers must provide protection against inadvertent contact by a service engineer.

· This information in this document is subject to change without prior notice. Please refer to the latest version of the data sheet, etc., for the most up-to date specifications of the product.

· No part of this document may be copied or reproduced in any form without prior written consent TDK-Lambda.

Note : CE MARKING

CE Marking, when applied to a product covered by this handbook, indicates compliance with the low voltage directive.

C265-04-11D

1. Model name identification method

PFE 500 SA – 12 /□

Option(*1)

Rated Output Voltage

Simple function

Output Power type

Series Name

2. Terminal Explanation

①

②

- Base-plate can be connected to FG through M3 mounting tapped holes.

- Consider contact resistance when connecting AC(L), AC(N), R, +BC, –BC, +V, –V.

- Note that +BC and –BC terminal are primary voltage with high voltage (390VDC).

Do not connect load from these terminals.

Name plate

④③

⑤

⑥

⑦ ⑧ ⑨ ⑩ ⑪

(*1) /Blank：Standard

/T ：Mounting standφ3.3

① AC(N) ② AC(L) ③

④ ＋BC ⑤ －BC ⑥ －V ⑦ ＋V ⑧ －S ⑨ ＋S ⑩ TRIM ⑪ ENA

① : Input terminal neutral line ② : Input terminal live line ③ : External inrush current limiting ④ resister terminal ⑤ : ＋Boosted voltage terminal ⑥ : －Boosted voltage terminal ⑦ : －Output voltage ⑧ : ＋Output voltage ⑨ : －Remote sensing terminal ⑩ : ＋Remote sensing terminal ⑪ : Output voltage trimming terminal ⑫ : Power on signal terminal

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PFE300SA INSTRUCTION MANUAL

(Non-threaded through hole)

500SA Series

3. Block Diagram

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PFE300SA INSTRUCTION MANUAL

500SA Series

Rectifier

detector

Input voltage

Input current

Switching Frequency

PFHC Circuit (fixed) : 100kHz DC/DC Converter Circuit (fixed) 12, 28V : 230kHz (primary), 460kHz (secondary)

DC/DC Converter Circuit (fixed) 12, 48V : 180kHz (primary), 360kHz (secondary)

4. Sequence Time Chart

Filter

Inrush current

limiting circuit

OVP

detector

Control circuit

voltage

detector

Boosted

Switching circuit

OCP

OTP

Control circuit

Rectifier

Output filter

Input Line

OVP

Cut-off

Acitivate

Input Line

OCP

Note : This product has no remote ON/OFF function.

V* voltage level: Refer to Application Notes “6-8.Power ON Signal (ENA Terminal)” section.

OCP

Release

Activate

Cut-off

Input Line

OTP

Circuit

Cut-off

Activate

Input Line

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PFE300SA INSTRUCTION MANUAL

5. Terminal connecting method

In order to use the PFE300SA,500SA Series, this module must be connected with external components according to Fig.5-1. Pay attention to the each wiring. If it is connected to wrong terminal, the power supply will be damaged. PFE300SA,500SA Series employs conduction cooling method. Use heat sink and fan to dissipate heat. For selection of heat sink and heat sink dissipation method, refer to the Power Module Application Note.

C13

C12

L= 50mm

C11

C15 C16

C14

L1 L2

AC(L)

PFE300SA PFE500SA

AC(N)

BASE-PLATE

TFR1

-V

-S

TRIM

ENA

+BCR

-BC

Input Filter

(For VCCI-classA)

Fig.5-1 Basic connection

C10

･

500SA Series

＋

Load

－

F1 : External Input Fuse

PFE300SA,500SA Series has no internal fuse. Use external fuse to acquire each Safety Standard and to further improve safety. PFE300SA,500SA Series acquired safety standard certification using 15A, 250V,Fast-Blow external fuse. Further, Fast-Blow type fuse must be used per one module. Also, in-rush surge current flows during line throw-in. Be sure to check I2t rating of external switch and external fuse.

Recommended External Fuse：15A , 250V

Note) Select fuse based on rated voltage, rated current and surge current capability.

(1) Voltage Ratings

100VAC line : AC125V 200VAC line : AC250V

(2) Current Ratings

Rated current is determined by the maximum input current based on operating conditions and can be

calculated by the following formula.

For Efficiency and Power Factor values, refer to separate document “PFE300SA Series Evaluation Data” or “PFE500SA Series Evaluation Data”.

C1, C4, C5 : 1uF (Film Capacitor)

Ripple current flows through this capacitor. When selecting capacitor, be sure to check the allowable maximum ripple current rating of this capacitor. Verify the actual ripple current flowing through this capacitor by doing actual measurement. Connect C5 as close as possible towards the input terminals AC(N) and AC(L) of this power module.

Recommended Voltage Rating : 250VAC

L1, L2 : 6mH

Add common mode choke coil as EMI/EMS countermeasure. When using multiple modules, connect coil to each module.

Note) Depending on the input filter used, noise might increase or power module might malfunction due to

C2, C3 : 4700pF(Ceramic Capacitor)

(max)Iin

Iin (max) : Maximum Input Current Pout : Maximum Output Power Vin : Minimum Input Voltage η : Efficiency PF : Power Factor

filter resonance.

Pout

(Arms)　

PFηVin

´´

(Formula 5-1)

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PFE300SA INSTRUCTION MANUAL

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500SA Series

R1 : 470kΩ

Connect bleeder resistor across AC(L) and AC(N) terminals.

C6, C7 : 1000pF(Ceramic Capacitor)

Add ceramic capacitor as EMI/EMS countermeasure. Be sure to consider leakage current of your equipment when adding this capacitor. High withstand voltage are applied across these capacitor during withstand voltage test depending on the application. Select capacitors with high withstand voltage rating. Connect C6 as close as possible to AC(N) terminal, C7 as close as possible to AC(L) terminal.

C8, C9 : 1uF(Film Capacitor)

Ripple current flows through this capacitor. When selecting capacitor, be sure to check the allowable maximum ripple current rating of this capacitor. Verify the actual ripple current flowing through this capacitor by doing actual measurement. Connect C8 as close as possible to R terminal and -BC terminal, C9 as close as possible to +BC terminal and -BC terminal.

Recommended Voltage Rating : 450VDC

Note) Select Capacitor with more than 3A (rms) rating.

C10 : Electrolytic Capacitor

PFE300SA : 470uF x 1 PFE500SA : 390uF x 2 parallel

Refer to “Selection Method of External Bulk Capacitor for Boost Voltage” below. Allowable external capacitance at nominal capacitance value is shown below.

Recommended Voltage Rating : 450VDC Recommended Total Capacitance : 390uF‐1200uF

Note) 1. Do not connect capacitors with more than the above capacitance value as this would result into

power module damage.

2. When using module below -20℃ ambient temperature, AC ripple of boost voltage, output ripple

voltage might be affected by ESR characteristics of the bulk capacitors. Therefore, be sure to verify characteristics by actual evaluation.

C11, C12 : 0.033uF

Connect ceramic or film capacitor as EMI/EMS countermeasure and to reduce spike noise. High withstand voltage is applied across this capacitor during withstand voltage test depending on the application. Connect C11 as close as possible to +V terminal, C12 as close as possible to -V terminal.

C13 : 1000pF(Ceramic Capacitor)

Add ceramic capacitor as EMI/EMS countermeasure. High withstand voltage are applied across this capacitor during withstand voltage test depending on the application. Select capacitors with high withstand voltage rating. Connect C13 as close as possible to -BC terminal.

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PFE300SA INSTRUCTION MANUAL

500SA Series

C14: Refer to Table 5-1

To reduce output ripple noise voltage, connect electrolytic capacitors across +V and –V. Connect C14 as close as possible to the +V and -V output terminals of this power module.

Table 5-1 C14 : Recommended output external capacitance

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PFE300SA INSTRUCTION MANUAL

500SA Series

C15: 2.2uF(Ceramic Capacitor)

Connect chip ceramic capacitor at 50mm from the output terminals +V and -V of the power module to reduce output spike noise. Also, note that output spike voltage may vary depending on the wiring pattern of the printed circuit board.

C16 : Refer to Table 5-2

Connect C16 at 50mm from the output terminals +V and -V of the power module to stabilize operation. Note that the output ripple and line turn off characteristics of the power module might be affected by the ESR and ESL of the electrolytic capacitor. Also, note that output ripple voltage may vary depending on the wiring pattern of the printed circuit board. Sudden change in output voltage due to sudden load change or sudden input voltage change can be reduced by increasing external output capacitance value.

Table 5-2 C16 : Recommended output external capacitance

Note) 1. Use low-impedance electrolytic capacitors with excellent temperature characteristics.

(Nihon Chemi-con LXY Series or equivalent) (Nichicon PM Series or equivalent)

2. For module operation at ambient temperature -20℃ or less, output ripple voltage might be

affected by ESR characteristics of the electrolytic capacitors. Increase the capacitance values shown in Table 5-1 and 5-2 according to the table below.

Table 5-3 C14,C16 : Recommended output external capacitance(Ambient Temperature ≦ -20℃)

3. Take note of the maximum allowable ripple current of the electrolytic capacitor used. Especially,

for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not be exceeded.

For connection other than recommended capacitance, be sure to verify characteristics by actual evaluation.

100VAC

200VAC

●Selection Method of External Bulk Capacitor for Boost Voltage

Boost voltage bulk capacitor is determined by boost voltage ripple voltage, ripple current and hold-up time. Select capacitor value such that boost voltage ripple voltage does not exceed 15Vp-p.

Note) When ambient temperature is -20℃ or less, ripple voltage of boost voltage might increase due to

ESR characteristics. Therefore, verify above characteristics by actual evaluation.

For output hold-up time, refer to separate document “PFE300SA Series Evaluation Data” or “PFE500SA Series Evaluation Data" and use appropriate capacitor up to 1200uF maximum. It is recommended that verification should be done through actual evaluation. For allowable ripple current value, refer to Fig. 5-2 and select a capacitor with higher ripple current rating.

2000

1600

1200

800

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PFE300SA INSTRUCTION MANUAL

500SA Series

400

Ripple Current (mA rms)

0 100 200 30 0 400 500

Output P ower (W)

Fig. 5-2 Allowable ripple current value

The recommended boost voltage bulk capacitance value range is 390uF-1200uF. When using with reduced the bulk capacitance value, it is necessary to reduce output power as shown in Fig. 5-3.

Fig. 5-3 shows recommended value at 25℃ Base-plate Temperature. Temperature variance might have some effect on the characteristics. Therefore, verify characteristics by performing actual evaluation. Refer to “Fig. 7-1 Base-plate Measuring Point”. Note that reducing the bulk capacitance affects output hold-up time, dynamic line response and dynamic load response characteristics. It is recommended that verification should be done through actual evaluation.

500

400

300

200

Output Power (W)

100

390

300 600 900 1200

Bulk Cap. (uF)

Tbp:25℃

Fig. 5-3 Output Power v.s. Boost Voltage Bulk Capacitance

TFR1 : 10Ω - 100Ω

By connecting thermal fuse resistor across R and +BC terminals as shown in Fig. 5-1, in-rush current during line throw-in can be suppressed. Failures due to in-rush current such as melting of external fuse, welding of relay or switch connecting joints or shutdown of No-Fuse Breakers (NFB) can occur. Therefore, be sure to connect this external thermal fuse resistor of 10Ω or more. The allowable resistance value is limited by the external bulk capacitance value of shown in fig.5-4. Note that power supply will not operate if this external resistor is. not connected.

●Selection Method of External Resistor (1) Calculating Resistance Value for TFR1

Resistance can be calculated by the formula below.

Vin

R Ω　= (Formula 5-2)

Irush

)(

R : Resistance Value for External TFR1 Vin : Input Voltage converted to DC value = Input Voltage (rms) x 2

Irush : Input surge current value

(2) Required Surge Current Rating

Sufficient surge current withstand capability is required for external TFR1. Required Surge Current Rating can be selected by I2t. (Current squared multiplied by time)

VinCo

I2t : Current-squared multiplied by time Co : Boost Voltage Bulk Capacitance

Vin : Input Voltage converted to DC value = Input Voltage (rms) x 2 R : Resistance Value for External TFR1

(3)TFR1 limitation TFR1 is limited as shown in drawing below.

Graph below shows resistor value at 25℃ Base-plate Temperature. Input Surge current might vary due to temperature. Therefore, verify characteristics by performing actual evaluation.

)sA(

(Formula 5-3)

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PFE300SA INSTRUCTION MANUAL

500SA Series

100

TFR[Ω]

390

300 600 900 1200

Bulk Cap[uF]

Tbp:25℃

Fig.5-4 TFR1 v.s. Boost Voltage Bulk Capacitance

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PFE300SA INSTRUCTION MANUAL

500SA Series

6. Explanation of Functions and Precautions

6-1. Input Voltage

Input voltage range is single phase 85-265VAC(47-63Hz). Take care not to apply input voltage which is out specified range nor should a DC input voltage be applied as this would result into power supply damage. For cases where conformance to various safeties required, described as 100-240VAC (50-60Hz)

6-2. Output Voltage Range

Output voltage can be adjusted within the range below by connecting fixed and variable resistors. However, take care not to exceed the output voltage range shown below because OVP function will activate.

Output Voltage Adjustment Range :+/-20% of the typical voltage rating

When increasing output voltage, reduce output current so as not to exceed maximum output power. Even if the output voltage is adjusted using external circuit shown in Fig. 6-1, remote sensing can be done. For details on Remote Sensing function, refer to “6-7. Remote Sensing”.

●Output Voltage Adjustment using Fixed and Variable Resistors External resistor (R2) and variable resistor (VR) values, as well as, circuit connection is shown below. For this case, remote programming of the output voltage can be done through the remote programming resistor VR. Be sure to connect the remote programming resistor between +S and +V terminals.

Table 6-1 External Resistor and Variable Resistor Value (For +/-20% Output Adjustment)

External Resistor (R2) : Tolerance +/-5% or less Variable Resistor (VR) : Total Tolerance +/-20% or less End Resistance 1% or less

Fig.6-1 External Resistor Connection Example

6-3. Inrush Current

Input surge current changes with the thermal fuse resistor (TFR1) value and external boost voltage bulk capacitance value (C10). It is recommended that verification should be done through actual evaluation.

The inrush current value indicated in the specification is measured under 25℃ using basic connection. Inrush current increases after recovery from short interruptions. Please be careful in the selection of an input switch, an external fuse, etc.

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PFE300SA INSTRUCTION MANUAL

500SA Series

6-4. Over Voltage Protection (OVP)

This module is equipped with OVP function. OVP function operates within 125%-145% of nominal output voltage. When OVP triggers, the output will be shut down. When the OVP function activates, first cut off input line and verify that boost voltage has dropped down to 7V or less. Then, recover output by recycling input line. OVP value is fixed and cannot be set externally. Pay attention not to apply higher voltage externally to the output terminal to avoid power supply damage.

6-5. Over Current Protection (OCP)

This module is equipped with OCP function. OCP function operates when the output current exceeds 105% of maximum DC output current of specification. Output will automatically recover when short circuit or overload condition is removed. OCP value is fixed and cannot be adjusted externally. Note that continuous short circuit or overload condition might result in power supply damage.

6-6. Over Temperature Protection (OTP)

This module is equipped with OTP function. This function will activate and shutdown the output when ambient temperature or internal temperature abnormally rises. OTP activates at following base-plate temperature.

PFE300SA-12,28,48 : 105℃ - 130℃ PFE500SA-12 : 90℃ - 115℃ PFE500SA-28,48 : 105℃ - 130℃

When OTP function operates, output can be recovered by cooling down the baseplate sufficiently and letting the boost voltage drop down to 7V or less before recycling the input line.

6-7. Remote Sensing (+S, -S Terminals)

This module has remote sensing terminals to compensate for voltage line drop from the output terminals to the output load. When remote sensing is not required, (local sensing) short +S to +V and -S to -V terminals respectively. Note that line drop (voltage drop due to wiring ) compensation voltage range must be such that the output voltage is within the output voltage adjustment range and that the voltage between -V and -S must be within 2V. Consider power loss due to line drop and use power supply within the maximum allowable output power. Before using, do adequate prior evaluation such that module does not receive any effect of noise by using a parallel pattern, etc. for remote sensing line

Fig.6-2 Remote Sensing is used Fig.6-3 Remote Sensing is not used

(Local Sensing)

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PFE300SA INSTRUCTION MANUAL

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6-8. Power ON Signal (ENA Terminal)

This signal is located at the secondary side (output side) and is an open drain output.

Maximum sink current : 10mA Maximum applied voltage : 75V.

Return line for ENA terminal is the -V terminal. When output voltage goes over a specified voltage level at start up, Power ON signal is “Low level”. Output voltage threshold level is as follows.

Table 6-2 Output voltage in case an ENA signal changes

500SA Series

6-9. Maximum Ripple and Noise

This value is measured according to the description below in accordance with JEITA RC-9131B. In the basic connection shown in Fig. 5-1, additional connection shown in Fig. 6-4 is done for measurement. Capacitor (Ceramic Capacitor : 2.2µF and Electrolytic Capacitor : Refer to Table 5-2) must be connected within 50mm from the output terminals. Then, connect coaxial cable with JEITA attachment across the ceramic capacitor electrodes. Use 100MHz bandwidth oscilloscope or equivalent. Also, note that output ripple voltage and output spike noise may vary depending on the wiring pattern of the printed circuit board. In general, output ripple voltage and output spike noise can be reduced by increasing external capacitor value.

Fig.6-4 Output Ripple Voltage (including Spike Noise)

Measurement Method

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PFE300SA INSTRUCTION MANUAL

6-10. Series Operation

Series operation is possible for PFE300SA,500SA Series. Connections shown in Fig. 6-5 and Fig. 6-6 are possible. Also, Maximum allowable modules in series is 3 pieces.

C14 C16

-V

-S

-V

-S

C16'C14'

Load

-V

-S

-V

-S

C16C14

C16'C14'

Load

Fig.6-5 Series Operation Fig.6-6 +/-Output Series Applications

(High Output Voltage Applications)

6-11. Isolation Resistance

Isolation resistance between Output – Base-plate is more than 100MΩat 500VDC. For safety operation, voltage setting of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test.

Output – Base-plate : 100MΩ or more at 500VDC

Isolation Resistance tester

･

500SA Series

BASE-PLATE

AC(N)

AC(L)

PFE300SA PFE500SA

( Top View )

TRIM

R +BC -BC

Fig.6-7 Isolation Resistance Test Method

-V

-S

ENA

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PFE300SA INSTRUCTION MANUAL

500SA Series

6-12. Withstand Voltage Test

This series is designed to withstand 2.5kVAC between input and base-plate, 3.0kVAC between input and output and

1.5kVDC between output and base-plate each for 1 minute. When testing withstand voltage, set current limit of withstand voltage test equipment at 20mA.

Be sure to apply DC voltage between output - base-plate. Avoid applying AC voltage during this test because this will damage the power supply. The applied voltage must be gradually increased from zero to testing value and then gradually decreased for shut down. When timer is used, the power supply may be damaged by high impulse voltage at timer switch on and off. Connect each terminals according to the circuit diagram shown below.

2.5kVAC 1 minute (20mA) 3kVAC 1 minute (20mA)

Fig.6-8 Fig.6-9

Input to Base-plate Withstand Voltage Test Method Input to Output Withstand Voltage Test Method

1.5kVDC 1 minute

Fig.6-10

Output to Base-plate Withstand Voltage Test Method

Withstand Voltage

Testing with External Application

The above Withstand Voltage Testing specification applies only to power module as stand-alone unit. Please take note of the following points when Withstand Voltage Testing is performed with attached external application. For connections shown in Fig. 5-1, when injecting 3kVAC between Input – Output, Voltage Divider Ratio between Input – Base-plate and Output – Base-plate will be affected by capacitance value ratio connected between the Input – Base-plate and Output – Base-plate. When selecting external capacitor at the Input – Base-plate and Output – Base-plate, take care of the capacitance value and voltage rating.

Capacitor of Input – Base-plate : (C2,C3,C6,C7,C13) Capacitor of Output – Base-plate : (C11,C12)

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PFE300SA INSTRUCTION MANUAL

500SA Series

7. Mounting Method

7-1. Mounting Method

These products can be used in any orientation but be sure to consider enough airflow to avoid heat accumulation around the power supply. Consider surrounding components layout and set the PCB mounting direction such that air can flow through the heat sink by forced or convection cooling. Refer to the power module application note "Power module mounting method" for mounting method on PWB. This product can operate at actual mounting condition when base-plate temperature and ambient temperature are maintained at or below the following temperature.

PFE300SA-12,28,48 : 100℃ PFE500SA-12 : 85℃ PFE500SA-28,48 : 100℃

Temperature at worst case operating condition at the measuring point shown in Fig. 7-1 and Fig. 7-2. For Thermal Design details, refer to Application Notes “Thermal Design” section.

Fig.7-1 Base-plate Temperature Measuring Point Fig.7-2 Ambient Temperature Measuring Point

7-2. Output Derating

Operating temperature range is limited according to Fig. 7-3.

100

)

％

(

Load (

負荷電流

-40 -20 0 20 40 60 80 100

ベースプレート温度および周囲温度 (℃

PFE500 SA-12

PFE300 SA-12, 2 8, 4 8

PFE500 SA-28 , 48

Baseplate and Ambient temperature (℃)

)

Fig.7-3 Derating Curve

To further improve the reliability, it is recommended to use this power supply with base-plate and ambient temperature derating.

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PFE300SA INSTRUCTION MANUAL

500SA Series

7-3. Notes on Designing PWB for Power Module Mounting

In order to satisfy withstand voltage specification, it is recommended to keep following distances for each pattern wiring and mounting components distance of primary circuit (Input), secondary circuit (Output) and FG (Baseplate).

Between primary circuit and FG ・・・・・ 5.0mm or more

Between secondary circuit and FG ・・・・ 2.0mm or more

To ensure conformance to various safety standards, creepage distance and clearance between the primary and the secondary of the PWB for power module mounting shall be considered. From the power module cover outline and terminals, keep creepage distance and clearance between the primary and the secondary. In order to acquire safety standards for this power module, creepage distance and clearance between the primary and the secondary is designed to be 7.5 mm. The pattern wiring prohibited area of the PWB is shown in Fig. 7-4, and power module cover outline is shown in Fig. 7-5. Creepage distance and clearance between the primary and the secondary of the PWB for power module mounting varies depending on power module mounting condition, contact our customer support for details.

・・・ Pattern wiring prohibited area of the secondary circuit ・・・ Pattern wiring prohibited area of the primary circuit ・・・ Pattern wiring prohibited area of the primary and the secondary circuit

Fig.7-4 Pattern wiring prohibited area of PWB for power module mounting

(When the distance on the primary and the secondary is 7.5 mm)

Fig.7-5 Dimensions of the power supply cover

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PFE300SA INSTRUCTION MANUAL

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7-4. Recommended Soldering Condition

Recommended soldering temperature is as follows. Soldering Dip ：260℃, within 10 seconds Preheat ：130℃, within 60 seconds

7-5. Recommended washing Condition.

After soldering, following washing condition is recommended. For other washing conditions, consult our Customer Support Group. (1) Recommended washing solution

・IPA（Isopropyl Alcohol） (2) Washing method In order to avoid penetration inside the power module, washing should be done with brush.

Then, dry up thoroughly after washing.

8. Before Concluding Power Module Damage

Verify following items before concluding power module damage.

(1) No output voltage

- Is specified input voltage applied?

- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?

- Is there no abnormality with the output load?

- Is the actual baseplate temperature within the specified operating temperature of this module?

(2) Output voltage is high

- Are the remote sensing terminals (+S, -S) correctly connected?

- Is the measurement done at the sensing points?

- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?

(3) Output voltage is low

- Is specified input voltage applied?

- Are the remote sensing terminals (+S, -S) correctly connected?

- Is the measurement done at the sensing points?

- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?

- Is there no abnormality with the output load?

(4) Load regulation or line regulation is large

- Is specified input voltage applied?

- Are the input or output terminals firmly connected?

- Is the measurement done at the sensing points?

- Are the input and output wires too thin?

(5) Large output ripple

- Is the measurement done according to methods described in the Instruction Manual or is it an equivalent

method?

500SA Series

TDK-Lambda

PFE300SA INSTRUCTION MANUAL

9. Warranty Period

Warranty period is 5 years. For damages occurring at normal operation within this warranty period, repair is free of charge.

Following cases are not covered by warranty (1) Improper usage like dropping products, applying shock and defects from operation exceeding specification of the unit. (2) Defects resulting from natural disaster (fire, flood etc.) (3) Unauthorized modifications or repair by the buyers’ defects not cause by our company.

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500SA Series

TDK-Lambda PFE300SA Series, PFE500SA Series Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual