Rohm BD7F205EFJ-C Скачать руководство пользователя страница 12 | Manualshive

Страница: 12 / 26

background image

12/25

© 2022 ROHM Co., Ltd.

65UG028E Rev.001

2022.7

User's Guide

BD7F105EFJ-EVK-001

Figure 32. BD7F205EFJ-EVK-001 Schematic

Circuit diagrams

(Condition) V

IN

= 8 V to 32 V, V

OUT

= 16.5 V, 0.2 A

Bill of Materials

*Parts are subject to change without notice.

«
...
10
11
12
13
14
...
»

Содержание BD7F205EFJ-C

Страница 1: ...puts an isolated 6 2 V 16 5 V and 6 2 V voltage from an input of 8 V to 32 V and can output a maximum output power 6 W BD7F205EFJ C is an isolated flyback converter that does not require a photocouple...

Страница 2: ...Min Typ Max Units Conditions Input voltage range VIN 8 12 32 V Output voltage 1 VOUT1 5 5 6 2 6 9 V IOUT1 0 1 A Output voltage 2 VOUT2 14 8 16 5 18 2 V IOUT2 0 1 A Output voltage 3 VOUT3 5 5 6 2 6 9 V...

Страница 3: ...t the positive terminal of the power supply to the VIN terminal and the negative terminal to the GND terminal with a pair of wires 4 Connect the positive terminal of the load to VOUT terminal and the...

Страница 4: ...toring the flyback voltage due to the voltage at the output provides primary side feedback control that eliminates the need for photocouplers and auxiliary windings Operation starts when the VIN pin v...

Страница 5: ...O Overcurrent protection OCP Overheat protection TSD REF pin open protection REFOPEN Short circuit protection SCP Battery short circuit protection BSP Critical Characteristics Input voltage range VIN...

Страница 6: ...nt1 IOUT2 30mA IOUT3 50mA Figure 7 Output Voltage3 vs Output Current1 IOUT2 30mA IOUT3 50mA Figure 8 Efficiency vs Output Current1 IOUT2 30mA IOUT3 50mA Measurement data 1 Load regulation 5 2 5 6 6 0...

Страница 7: ...A Figure 12 Efficiency vs Output Current1 IOUT2 100mA IOUT3 300mA Measured data continued 5 2 5 6 6 0 6 4 6 8 7 2 7 6 0 0 1 0 2 0 3 VOUT1 V IOUT1 A VIN 8V VIN 12V VIN 18V VIN 32V 15 0 15 5 16 0 16 5 1...

Страница 8: ...3 vs Input Voltage IOUT1 100mA IOUT2 100mA IOUT3 300mA Figure 16 Frequency vs Input Voltage IOUT1 100mA IOUT2 100mA IOUT3 300mA Measured data continued 2 Line regulation 5 2 5 6 6 0 6 4 6 8 7 2 7 6 0...

Страница 9: ...ponse waveform 5 Output ripple voltage waveform VSW 20V div VOUT1 10V div VSW 20V div VOUT1 10V div VOUT2 10V div VOUT3 10V div VOUT2 10V div VOUT3 10V div VSW 20V div VSW 20V div VOUT1 1Vac div VOUT2...

Страница 10: ...Short Waveform ZOOM Vin 15 V Measured data continued 6 Startup stop waveform 7 Output short waveform VSW 20V div VSW 20V div VOUT1 10V div VSW 20V div VOUT1 10V div VIN 5V div VIN 5V div VIN 10V div...

Страница 11: ...of IC is calculated using the above table Loss of IC is divided into 1 Turn on loss 2 conduction loss 3 Turn off loss and 4 ICC Calculate the loss according to Table1 from the actual current waveform...

Страница 12: ...td 65UG028E Rev 001 2022 7 User s Guide BD7F105EFJ EVK 001 Figure 32 BD7F205EFJ EVK 001 Schematic Circuit diagrams Condition VIN 8 V to 32 V VOUT 16 5 V 0 2 A Bill of Materials Parts are subject to ch...

Страница 13: ...7 User s Guide BD7F105EFJ EVK 001 Transformer specifications Manufacturer Sumida Electric Co Ltd https job mynavi jp conts n sp 23 54430_23sumida Product name CEFD2010 00399 T381R External Dimensions...

Страница 14: ...14 25 2022 ROHM Co Ltd 65UG028E Rev 001 2022 7 User s Guide BD7F105EFJ EVK 001 Transformer Specifications continued Winding wire and linear linear type ELECTRICAL CHARACTERISTICS...

Страница 15: ...the middle of the operating range Initially set DTYP 40 This time set the Duty to 35 In this case the following formula is used 1 0 35 1 0 35 12 6 2 0 6 0 92 Therefore we will proceed with designing w...

Страница 16: ...herefore the surge voltage must be less than 15 7 V VSURGE is caused by the leaking magnetic fluxes of the transformers If VSURGE is large the transformer structure needs to be reviewed and the snubbe...

Страница 17: ...be satisfied change k to redesign With higher k values in discontinuous mode The operating load area becomes wider When k 1 discontinuous mode operation is performed in all areas This IC is continuous...

Страница 18: ...age VSW at turn off is calculated by the following equation SW pin voltage VIN pin voltage No of primary transformer turns Secondary transformer turns Output voltage Forward voltage of the output diod...

Страница 19: ...circuit of the IC Therefore the output voltage and the REF pin voltage are calculated by the following equations As can be seen from this equation the output voltage VOUT can be set by the transforme...

Страница 20: ...other hand when output capacitor is large start up time is long When SCP detection mask time tMASKSCP in start up is passed if REF voltage is lower than VSCP power supply cannot output Therefore COUT...

Страница 21: ...n for this is that the MAXIMUM is in the OFF time tOFF_MAX when the IC is under light load This is because switching is always performed at the minimum frequency determined by the minimum ON time tON_...

Страница 22: ...wing equation 2 Clamp setting voltage of snubber 2 Forward voltage of the Schottky diode Zener voltage of the zener diode At turn off if the clamp setting voltage is lower than the flyback voltage A c...

Страница 23: ...ormer peak current VOUT changes can be caused by VF variations in the secondary diodes or by leaking magnetic fluxes in the transformer An example of the output voltage compensation function is shown...

Страница 24: ...s proportional to IOUT so you can compensate for the above The compensation amount can be adjusted by the resistance value of the L_COMP pin Since ISW is a triangle wave current always use a capacitor...

Страница 25: ...25 25 2022 ROHM Co Ltd 65UG028E Rev 001 2022 7 User s Guide BD7F105EFJ EVK 001 Revision history Date Plate Content of change 1st Aug 2022 001 New...

Страница 26: ...ch technical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified...

Отзывы:

Нет отзывов

Похожие инструкции для BD7F205EFJ-C

Бренд: IBASE Technology Страницы: 58

Бренд: Micrel Страницы: 14

Бренд: ASROCK Страницы: 2

Бренд: Freescale Semiconductor Страницы: 28

Бренд: Silicon Laboratories Страницы: 16

BaseTravel 401 S

Бренд: Torqeedo Страницы: 32

tKINO-AL-E1-R10

Бренд: IEI Technology Страницы: 12

Бренд: ZMDI Страницы: 25

Outboard Motor BF5A

Бренд: Honda Страницы: 84

Бренд: AOpen Страницы: 8

Бренд: TYAN Страницы: 47

Бренд: NXP Semiconductors Страницы: 35

Бренд: Hanasis Страницы: 31

Бренд: Gigabyte Страницы: 96

Бренд: Microchip Technology Страницы: 2

Бренд: DFI Страницы: 115

Бренд: Bartels Mikrotechnik Страницы: 9

Бренд: Gigabyte Страницы: 96

Бренды по названию

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Популярные бренды

Загрузить еще бренды