Rohm BD7695FJ User manual

Power Factor Correction

Boundary Current Mode Method

BD7695FJ Reference Board

Notice

www.rohm.com HVB01E

＜

High Voltage Safety Precautions

＞

◇

Read all safety precautions before use

Please note that this document covers only the BD7695FJ evaluation board

(BD7695FJ-EVK-001) and its functions. For additional information, please refer to the

datasheet.

To ensure safe operation, please carefully read all precautions before

handling the evaluation board

Depending on the configuration of the board and voltages used,

Potentially lethal voltages may be generated.

Therefore, please make sure to read and observe all safety precautions described in

the red box below.

Before Use

[1] Verify that the parts/components are not damaged or missing (i.e. due to the drops).

[2] Check that there are no conductive foreign objects on the board.

[3] Be careful when performing soldering on the module and/or evaluation board to ensure that solder

splash does not occur.

[4] Check that there is no condensation or water droplets on the circuit board.

During Use

[5] Be careful to not allow conductive objects to come into contact with the board.

[6] Brief accidental contact or even bringing your hand close to the board may result in

discharge and lead to severe injury or death.

Therefore, DO NOT touch the board with your bare hands or bring them too close to the board.

In addition, as mentioned above please exercise extreme caution when using conductive tools such as

tweezers and screwdrivers.

[7] If used under conditions beyond its rated voltage, it may cause defects such as short-circuit or,

depending on the circumstances, explosion or other permanent damages.

[8] Be sure to wear insulated gloves when handling is required during operation.

After Use

[9] The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the

charges even after the connected power circuits are cut, please discharge the electricity after using

it, and please deal with it after confirming such electric discharge.

[10] Protect against electric shocks by wearing insulated gloves when handling.

This evaluation board is intended for use only in research and development facilities and

should by handled only by qualified personnel familiar with all safety and operating

procedures.

We recommend carrying out operation in a safe environment that includes the use of high

voltage signage at all entrances, safety interlocks, and protective glasses.

1/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

PFC (power Factor Correction) IC

PFC BCM (Boundary Current Mode) Method

Output 200 W 400 V

BD7695FJ Reference Board

BD7695FJ-EVK-001

The BD7695FJ-EVK-001 reference board outputs 400 V voltage from the input of 90 Vac to 264 Vac. The output current supplies up

to 0.5 A. The BD7695FJ which is BCM method PFC controller IC is used.

The BD7695FJ supplies the system which is suitable for all of products that requires PFC.

BCM is used for PFC part, and Zero Current Detection reduces both switching loss and noise.

THD is less than 8 %.

Electronics Characteristics

Not guarantee the characteristics, is representative value.

Unless otherwise noted; V

= 230 Vac, I

OUT

= 0.5 A, Ta = 25 °C

Parameter Min Typ Max Units Conditions

Input Voltage Range V

90 230 264 Vac

Input Frequency f

LINE

47 50/60 63 Hz

Output Voltage V

OUT

376 395 415 V

Maximam Output Power P

OUT

- - 200 W I

OUT

= 0.5 A

Output Current Range

(Note 1)

OUT

0.0 - 0.5 A

Total Harmonic Distortion(THD) THD 4.8 8 %

PF(Power Factor) PF 0.93 0.99 - - AC230 V I

OUT

= 0.5 A

Efficiency η 92 97.4. - %

Output Ripple Voltage

(Note 2)

- 10.8 20 Vpp AC90 V I

OUT

= 0.5 A

Hold Time T

HOLD

20 ms V

OUT

min 280 V

Operating Temperature Range T

-10 +25 +65 °C

(Note 1) Cool the component surface temperature with FAN, etc., if necessary, and the load application time so that the temperature does not exceed 105

℃

(Note 2) Not include spike noise

2/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

Operation Procedure

1. Operation Equipment

1. AC power supply 90 to 264 Vac, over 200 W

2. Electronic load capacity 0.5 A which supports input voltage 500 V

3. Multi meter

4. Power meter

2. Connect Method

1. AC power supply presetting range 90 to 264 Vac, Output switch is OFF.

2. Electronic load setting under 0.5 A, Load switch is OFF.

3. The reference board connects to measuring equipments and power supplies as in Figure. 1.

4. AC power supply switch is ON.

5. Check that output voltage is 400 V.

6. Electronic load switch is ON.

7. Operate with enough caution against electric shock because of non-isolated output voltage 400 V.

Figure 1. Connection Circuit

3/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

Derating

Maximum output power Po of the reference board is 200 W. The derating curve is shown in Figure. 2.

If ambient temperature is over 40 °C, Consider the load current time and air-cool with FAN so that the component

surface temperature does not exceed 105 ℃.

Figure 2. Temperature derating curve

4/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

Schematics

= 90 to 264 Vac, V

OUT

= 400 V

Figure 3. BD7695FJ-EVK-001 Schematics

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No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

Bill of Materials

Materials may be changed without notifying.

Item Specifications Parts name Manufacture

C1 220 nF, 310 Vac 890334025027CS WURTH ELECTRONIK

C2,C3,C4 470 nF, 310 Vac 890334025039CS WURTH ELECTRONIK

C5 220 µF, 450 V LGN2W221MELA40 NICHICON

C6,C7,C9,C10,C12,C19

- NON MOUNTED

C8 1 μ,25V TMK107B7105KA-T Taiyou yuden

C11 220 pF, 2k V 885342209008_ WURTH ELECTRONIK

C13,C14 2200 pF, 300 V DE1E3RA222MJ4BP01F MURATA

C15 0.1 µF, 630 Vdc 890324023023CS WURTH ELECTRONIK

C16 0.01 µF, 50 V 885012206089 WURTH ELECTRONIK

C18 22 µF, 50 V 860080672001 WURTH ELECTRONIK

CN1 3pin B03P-NV(LF)(SN) JST

CN2 3pin 691137910003 WURTH ELECTRONIK

D1 FRD, 10 A, 600 V RFNL10TJ6S ROHM

D3 3 A, 1k V 1N5408G ROHM

D4,D6 FRD, 0.5 A, 200 V RF05VAM2S ROHM

DA1 600 V, 10 A GBU10J-U1 WILLAS Corp

F1 310 Vac, 3.15 A 36913150000

FL1 35 mH / 3.5 A 7748040435 WURTH ELECTRONIK

FL2 20 mH/ 3 A 744825320 WURTH ELECTRONIK

HEAT1,HEAT3 11.5 K/W 30PBE30-30B MARUSAN ELECTRONICS

HEAT2 22.9 k/W IC-1625-STL SANKYO THRMOTECH

IC1 BD7695FJ ROHM

L1 230 µH 7.4A PFC3819QM-231K07D-50 TDK

L2 90 µH 7447013 WURTH ELECTRONIK

LF3 60 µH LF1246Y ALPHA TRANS

Q1 600 V, 24 A R6024KNX ROHM

R1,R5,R6 750 kΩ KTR18EZPF7503 ROHM

R2 680 kΩ KTR18EZPF6803 ROHM

R3 9.1 kΩ MCR03EZPFX9101 ROHM

R7,R8 10 kΩ MCR03EZPJ103 ROHM

R9,R12 220 Ω ESR18EZPJ221 ROHM

R10 100 Ω ESR18EZPJ101 ROHM

R11 10 Ω ESR18EZPJ100 ROHM

R13 15 kΩ ESR18EZPJ153 ROHM

R15,R16 220 mΩ LTR50EZPZFLR220 ROHM

R17 10　Ω/2 W PCF2C100K KOA

R20,R21,R22 130 kΩ ESR18EZPJ134 ROHM

R23,R24 270 kΩ ESR18EZPJ274 ROHM

R25 47 kΩ ESR18EZPJ473 ROHM

SCREW1,SCREW2,SCREW3

P-4 3MC 3x8 YAWATANEJI

TH1 2 Ω, 4 A 2D2-13LD SEMITEC

ZNR1,R4,R14,R18 - NON MOUNTED

PCB PCB0237B

6/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

PCB

Size: 200 mm x 112 mm

Figure 4. Top Silkscreen (Top view)

Figure 5. Bottom Layout (Top view)

7/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

BD7695FJ Overview

Feature

 Boundary Conduction Mode PFC

 Low THD Circuit Incorparation

 VCC Under Voltage Lock Out Function

 ZCD by Auxiliary Winding

 Static OVP by The VS Pin

 Error Amplifier Input Short Protection

 Stable MOSFET Gate Driving

 Soft Start Function

Key Specification

 Operating Power Supply Voltage Range 12.0 V to 38.0 V

 Circuit Current 0.58 mA ( Typ.)

 Operating Temperature Range -40 °C to +105 °C

Package W(Typ) x D(Typ) x H(Max)

SOP-J8 4.90 mm x 6.00 mm x 1.65 mm

Pitch 1.27 mm

Table 1. BD7695FJ PIN description

Pin No. Pin Name I/O Function ESD Diode

VCC

GND

1 VS I Feedback input pin - ○

2 EO O Error amp output pin - ○

3 MULT I Multiplier input pin - ○

4 CS I Over current protection pin - ○

5 ZCD I Zero current detection pin - ○

6 GND - GND pin ○ -

7 OUT O External MOSFET driver pin - ○

8 VCC I Power supply pin - ○

Figure 6. Block Diagram

8/14

No. 65UG030E Rev.001

Oct.2022

User’s Guide

BD7695FJ-EVK-001

Performance Data

Load Regulation

Figure 7. Load Regulation (V

oUT

vs P

OUT

) Figure 8. Line Regulation (V

OUT

vs V

)

Figure 9. Tatal Harmonic Distortion (THD vs V

) Figure 10. Power Factor (PF vs V

)

380.00

385.00

390.00

395.00

400.00

405.00

410.00

415.00

420.00

80 180 280

VOUT (V)

VIN(V

)

VOUT vs VIN

Po=200W

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

18.00

20.00

80 180 280

THD (%)

VIN(V

)

THD vs VIN

100W

150W

200W

0.5

0.55

0.6

0.65

0.7

0.75

0.8

0.85

0.9

0.95

80 180 280

)

PF vs V

200Ｗ

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