TDK-Lambda PH-A280 Series Instruction Manual - Tdk-Lambda

Summary of PH-A280 Series

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    C263-04-11a tdk-lambda ph-a280 series instruction manual ph-a280 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...

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    1 c263-04-11a tdk-lambda ph-a280 series instruction manual note : ce marking ce marking when applied to a product covered by this handbook indicates compliance with the low voltage directive (2006/95/ec) in that it complies with en60950-1..

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    1 1 tdk-lambda ph-a280 series instruction manual 1. Block diagram 2. Sequence time chart.

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    2 2 tdk-lambda ph-a280 series instruction manual 3. Model name identification method ph 150 a 280 – 12 output voltage input voltage series name output power type series name 4. Terminal explanation ① -vin ② cnt ③ +vin ④ -v ⑤ -s ⑥ trm ⑦ +s ⑧ +v ・ base-plate can be connected to fg (frame ground) by m3...

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    3 3 tdk-lambda ph-a280 series instruction manual 5. Terminal connecting method in order to use the ph-a280 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. Ph...

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    4 4 tdk-lambda ph-a280 series instruction manual f1 : input fuse this ph-a280 series has no built-in fuse. Use external fuse to acquire various safety standards and to improve safety. Moreover, use fast-blow type for every power supply. Furthermore, fuse must be connected to the +vin side if –vin si...

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    5 5 tdk-lambda ph-a280 series instruction manual c2: for stable operation of the power supply, add ceramic capacitor of 470 pf or more with high voltage rating between -vin terminal and baseplate as close as possible to the terminals. However, if the external fg capacitor between output terminal and...

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    6 6 tdk-lambda ph-a280 series instruction manual ●reverse input connection reverse input polarity would cause power supply damage. For cases where reverse connections are possible, connect a protective diode and fuse. Use protective diode with higher voltage rating than the input voltage, and with h...

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    7 7 tdk-lambda ph-a280 series instruction manual 6. Explanation of functions and precautions 6-1. Input voltage range input voltage range for ph-a280 series is indicated below. Input voltage range : 200 - 425vdc ripple voltage (vrpl) which results from rectification and filtering of commercial ac li...

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    8 8 tdk-lambda ph-a280 series instruction manual ●output voltage adjustment by external resistor or variable resistor (1)in case of adjusting output voltage lower (1-1) maximum output current allowable maximum output current = rated maximum output current of specification. (1-2) external resister co...

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    9 9 tdk-lambda ph-a280 series instruction manual (2) in case of adjusting output voltage higher(in case of connect to between trm and -s) (2-1) maximum output current allowable maximum output current = maximum output power ÷ adjusting output voltage. (becomes less than maximum output current of spec...

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    10 10 tdk-lambda ph-a280 series instruction manual (3) to adjust output voltage for whole range. ( in case of connect to between trm and +s and between +v and +s ) (3-1) maximum output current in case of adjusting output voltage lower allowable maximum output current = rated maximum output current o...

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    11 11 tdk-lambda ph-a280 series instruction manual 6-3. Maximum output ripple and noise measured value according to the specified methods based on jeita-9141 (clause 7.12 and clause 7.13) which is described in the following . Connect according to fig. 6-7 and measure. Connect capacitors (c3 : cerami...

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    12 12 tdk-lambda ph-a280 series instruction manual 6-8. Over voltage protection (ovp) this power module has built-in ovp function. Ovp set point is relative to the rated output voltage value. When output voltage exceed ovp set point, output voltage shut down. Ovp setting value is fixed and therefore...

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    13 13 tdk-lambda ph-a280 series instruction manual 6-11. On/off control (cnt terminal) without turning the input supply on and off, the output can be enabled and disabled using this function. This function also can be used for output sequence of plural power supply. On/off control circuit is on the ...

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    14 14 tdk-lambda ph-a280 series instruction manual 6-12. Redundant operation redundant operation is possible for loads that are within the maximum one power supply. When one module is shut-down by the power failure etc., another one can continue to provide power. Fig.6-13 redundant operation connect...

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    15 15 tdk-lambda ph-a280 series instruction manual 6-15. Operating ambient temperature there is no restriction on mounting direction but there should be enough consideration for airflow so that heat does not accumulate around the power supply vicinity. Determine external components configuration and...

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    16 16 tdk-lambda ph-a280 series instruction manual 6-20. Withstand voltage this power module is designed to have a withstand voltage of 3kvac between input and output, 2.5kvac between input and base-plate and 500vac between output and base-plate for 1 minute. When conducting withstand voltage test d...

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    17 17 tdk-lambda ph-a280 series instruction manual withstand voltage testing with external application the above withstand voltage testing specification applies only to power supply as stand–alone unit. Please take note of the following points when withstand voltage testing is performed with attache...

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    18 18 tdk-lambda ph-a280 series instruction manual 7. Mounting method 7-1. Mounting method by the following instruction shown in fig. 7-1, mount power supply onto printed circuit board. 3 screw spring washer plain washer heatsink silicone grease 3threaded mounting hole power supply printed circuit b...

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    19 19 tdk-lambda ph-a280 series instruction manual (4) recommended material of pcb recommended materials of the printed circuit board is double sided glass epoxy with through holes. (thickness t:1.6mm , copper 35μm) (5) input / output pattern width large current flows through input and output patter...

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    20 20 tdk-lambda ph-a280 series instruction manual 8. Before concluding power module damage verify following items before concluding power supply damage. (1) no output voltage ・ is specified input voltage applied? ・ are the on/off control terminal (cnt), remote sensing terminal (+s, –s), output volt...

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    21 21 tdk-lambda ph-a280 series instruction manual 10. Option heatsink *1: at convection cooling 10-1.For ph-a280 (1) haq-10t (convection cooling) thermal resistance: 7.5℃/w (forced air cooling) 3- 3.5 t he rm al r es is ta nc e be tw ee n h ea ts in k an d am bi en t [℃ /w ] average air velocity [m...