Rohm BD7693FJ-EVK-002 Bedienungsanleitung

Flyback Type High Power Factor

AC/DC Converter

Isolated 35 V 1.2 A

(BD7693FJ Evaluation Board)

Notice

www.rohm.com HVB01E

＜

High Voltage Safety Precautions

＞

◇

Read all safety precautions before use

Please note that this document covers only the BD7693FJ evaluation board

(BD7693FJ-EVK-002) 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.

1/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

Figure 1. BD7693FJ-EVK-002

AC/DC Converter

Flyback Type High Power Factor

AC/DC Converter

Isolated 35 V 1.2 A

BD7693FJ Evaluation Board

BD7693FJ-EVK-002

General Description

This evaluation board can output a voltage of 35 V isolated from an input of 90 Vac to 264 Vac, and the maximum output current is 1.2 A.

The one-converter flyback type achieves a high power factor (PF > 0.9).

The control IC uses BD7693FJ,which use the critical mode.

Switching loss and noise are reduced by zero current detection.

A circuit that lowers total harmonic distortion (THD) us used to support IEC610003-2 Class C and Class D.

2/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 2. Temperature derating curve

Performance Specification

Not guarantee the characteristics is representative value.

Unless otherwise specified V

= 230 Vac , I

OUT

= 1.2 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

33.25 35.0 36.75 V

Output Current Range

(Note1

OUT

0.06 - 1.2 A

Maximum Output Power

(Note1

OUT

0.0 - 42 W

Total Harmonic Distortion (THD)

THD 7.5 10 %

Power Factor (PF) PF 0.90 0.93 - -

Efficiency η 88.0 91.5 - %

Output Ripple Voltage

(Note 2)

RIPPLE

- 1.0 1.75 Vpp

Operating Temperature Range T

Opr

-10 +25 +60 °C

(Note 1) Adjust the load application time so that the component surface temperature does not exceed 105 °C.

(Note 2) Not include spikes noise.

Derating

3/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 3. Diagram of How to Connect

Operation Procedure

1. Necessary Equipment

(1) AC power supply (90 Vac to 264 Vac, 100 W or more)

(2) Load equipment (2 A at maximum value)

(3) DC voltmeter

(4) Power meter

2. Connect to Each Equipment

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

(2) Electronic load setting under 1.2 A, Load switch is OFF.

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

(4) AC power supply switch is ON.

(5) Check that output voltage is 35 V.

(6) Electronic load switch is ON.

CN1-2 AC (L)

CN1-2 AC (N)

Ｖ

4/16

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 4. BD7693FJ-EVK-002 Schematics

Application Circuit

This evaluation board is a one-converter flyback type high power factor ACDC converter.

Operates in critical mode.

The output (35 V) voltage is monitored by a feedback circuit and fed back to the EO pin of BD7693FJ through a opto-coupler.

At startup, the voltage from the emitter pin of Q2 to the VCC pin is supplied through the startup circuit, and the voltage at the VCC pin

rises.

When the VCC pin voltage exceeds the UVLO release voltage of 13.0 V (Typ), the BD7693FJ will start operating.

The voltage divided by the resistors R6 and R7 from the VCC voltage is applied to the VS pin.

When the VS pin voltage exceeds the VS short protection voltage VSHORT 0.30 V (Typ), BD7693FJ starts switching.

When the output voltage rises, the VCC voltage is raised from the auxiliary winding of the transformer via R8 and D3 to turn off the

starting transistor Q2.

The demo board schematic is shown in the figure below, and the list of parts is shown on page 13.

5/16

APR.2022

User’s Guide

BD7693FJ-EVK-002

BD7693FJ 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 10.0 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. BD7693FJ 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 5. Block Diagram

6/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 8. Output Voltage vs Input Voltage Figure 9. Efficiency vs Input Voltage

Figure 6. Output Voltage vs Output Current Figure 7. Efficiency vs Output Current

Measurement Data

1. Load Regulation

2. Line Regulation

7/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 10. PF vs Input Voltage

Figure 11. THD vs Input Voltage

Measurement Data – continued

3. PF (Power Factor)

4. Total Harmonic Distortion of input current

8/16

No. 64UG141E Rev.001

APR.2022

User’s Guide

BD7693FJ-EVK-002

Figure 12. Harmonic current V

= 100 Vac, I

OUT

= 1.2 A

Figure 13. Harmonic current V

= 230 Vac, I

OUT

= 1.2 A

Figure 14. Harmonic current V

= 100 Vac, I

OUT

= 1.2 A Figure 15. Harmonic current V

= 230 Vac, I

OUT

= 1.2 A

Measurement Data – continued

5. Harmonic current

Andere Rohm Hauptplatine Handbücher

Rohm

Rohm BM3G007MUV-EVK-003 Bedienungsanleitung

Rohm

Rohm BD7411G-EVK-001 Bedienungsanleitung

Rohm

Rohm BM1Z002FJ Bedienungsanleitung

Rohm

Rohm P04SCT4018KE-EVK-001 Bedienungsanleitung

Rohm

Rohm BD93E11GWL EVK Bedienungsanleitung

Rohm

Rohm BD9G101G Montage- und Bedienungsanleitung

Rohm

Rohm RAGU V1.0 Bedienungsanleitung

Rohm

Rohm BU94603 Bedienungsanleitung

Rohm

Rohm BD7682FJ-LB-EVK-302 Bedienungsanleitung

Rohm

Rohm BM1422AGMV-EVK-001 Bedienungsanleitung

Rohm

Rohm BM92A14MWV-EVK-001 Bedienungsanleitung

Rohm

Rohm TO-263-7L Bedienungsanleitung

Rohm

Rohm KX134-1211-EVK-001 Bedienungsanleitung

Rohm

Rohm BM92A56MWV-EVK-001 Bedienungsanleitung

Rohm

Rohm BD7682FJ-EVK-301 Bedienungsanleitung

Rohm

Rohm BM92A56MWV-EVK-001 Kurzanleitung

Rohm

Rohm BM1Z002FJ Bedienungsanleitung

Rohm

Rohm BM92A56MWV-EVK-001 Bedienungsanleitung

Rohm

Rohm BD7F205EFJ-C Bedienungsanleitung

Rohm

Rohm BD96801-SPA7-EVK-301 Bedienungsanleitung

Rohm

Rohm RKX-A3-EVK-001 Bedienungsanleitung

Rohm

Rohm Lapis MK715 1 Evaluation Kit Mini Plus... Bedienungsanleitung

Rohm

Rohm Switching Regulator Series Bedienungsanleitung

Rohm

Rohm BM2P016T-EVK-002 Bedienungsanleitung

Beliebte Hauptplatine Handbücher anderer Marken

DFI

DFI SD170 Bedienungsanleitung

ASROCK

ASROCK ROMED8-2T Bedienungsanleitung

Asus

Asus P2L97A Bedienungsanleitung

Winmate

Winmate IC70 Bedienungsanleitung

Asus

Asus MES-B Bedienungsanleitung

Grantech

Grantech SYS8F377VGGA-3OMN Bedienungsanleitung

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR Bedienungsanleitung

Gigabyte

Gigabyte GA-9IVDT Bedienungsanleitung

Texas Instruments

Texas Instruments ADS8372EVM Bedienungsanleitung

Commell

Commell MS-C73 Bedienungsanleitung

IBT Technologies

IBT Technologies MB860 Bedienungsanleitung

Nvidia

Nvidia TEGRA DG-04927-001_V01 Bedienungsanleitung

Biostar

Biostar M7VIT Bravo Bedienungs- und Montageanleitung

Intel

Intel D33217CK Bedienungsanleitung

Asus

Asus F1A55-M LX PLUS R2.0 Bedienungsanleitung

EPC

EPC EPC9147C Bedienungsanleitung

Asus

Asus EX-B760M-V5 D4 Bedienungsanleitung

EPOX

EPOX MU-8KHA0010 Bedienungsanleitung