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Datasheet BM67290FV-C PDF ( 特性, スペック, ピン接続図 )

部品番号 BM67290FV-C
部品説明 High Voltage Detection IC
メーカ Rohm
ロゴ Rohm ロゴ 
プレビュー
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BM67290FV-C Datasheet, BM67290FV-C PDF,ピン配置, 機能
For Electric Cars & Hybrid Cars
Isolation Voltage 2,500Vrms
High Voltage Detection IC
BM67290FV-C
General Description
This is a voltage detector IC for DC-DC converter.
Aside from being capable of converting input voltage to
duty, it has built in protection functions against low
voltage, overvoltage and active overvoltage.
Features
Built-in input PWM modulation circuit
Built-in low voltage lock out circuit
Built-in input under voltage protection function
Built-in input overvoltage protection function
Built-in magnetic isolator
Built-in active overvoltage protection function
Built-in reference voltage output
Key Specifications
Isolation Voltage:
2,500Vrms (Max)
Power Source Voltage Range (high voltage side):
8.0V to 24V
Power Source Voltage Range (low voltage side):
3.0V to 5.5V
Reference Voltage :
5V±1.5%
Oscillation Frequency Variability:
10kHz to 250kHz (Typ)
Package
W(Typ) x D(Typ) x H(Max)
Application
DC-DC converter
Typical Application Circuit
SSOP-B20W
6.50mm x 8.10mm x 2.01mm
VBIAS
VDD1 VDD2
REF NC
VH OUT
RFOV NC
RFLV SD1
VDTY SD2
VACT NC
RT NC
GND1 GND2
GND1 GND2
VBIAS
Controller
Figure 1. Example of a Typical Application Circuit of DC-DC Converter
Product structure: Silicon integrated circuit This product has no designed protection against radioactive rays
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/30
TSZ02201-0727ABZ00010-1-2
10.Nov.2014 Rev.001

1 Page



BM67290FV-C pdf, ピン配列
BM67290FV-C
Block Diagram
VDD1
REF
VACT
VH
RFOV
RFLV
VDTY
RT
GND1
Internal circuit
VDD
UVLO COMP
VDD
7.7V/7.4V
REF
REG12V
REGlogic
Internal circuit
(UVLO)
4.2V/4.0V
REF/
4.0V
VACT
COMP
REF
UVLO COMP
(PRT1)
Transformer 1
(PWM) Transformer
driving
circuit
VHOV
COMP
RFOV/
0.985 x RFOV
VHLV
COMP
(PRT2)
PWM
Circuit/
Output
mode
switching
(SD)
Transformer
driving
circuit
Transformer 2
0.8 x RFLV/
RFLV
VDD2
Reset
VDD2
Transformer
receiving
circuit
DRV
OUT
Transformer
receiving
circuit
GND2
VDD2
SD1
DRV
GND2
SD2
GND1
GND2
GND2
GND2
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
3/30
TSZ02201-0727ABZ00010-1-2
10.Nov.2014 Rev.001


3Pages


BM67290FV-C 電子部品, 半導体
BM67290FV-C
(3) Timing when VDD1 is turned OFF before VDD2
When VDD1 reaches VthLVDD1, REF and CT immediately stop. Outputs become SD1=H, SD2=L and OUT=L.
VDD2
0V
VthVDD1H
VthVDD1L
VDD1
0V
VthREFH
VthREFL
REF
0V
VthOV, VACT
VthOV×VOVZ
VHVACT
VthHPWL
( CT )
VH
VDTY
VthLV
VthLV×VLVH
VthLPWL
0V
H
( CLK )
L
VDD2
OUT
0V
H
( PRT1 )
L
H
( PRT2 )
L
VDD2
SD1
0V
Hi-Z
SD2
0V
Figure 5. VDD1 Stop to VDD2 Stop Timing Chart
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
6/30
TSZ02201-0727ABZ00010-1-2
10.Nov.2014 Rev.001

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