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PDF ( 数据手册 , 数据表 ) BM1P062FJ

零件编号 BM1P062FJ
描述 DC/DC converter IC
制造商 ROHM Semiconductor
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BM1P062FJ 数据手册, 描述, 功能
Datasheet
AC/DC Drivers
PWM Control type
DC/DC converter IC
BM1P061FJ / BM1P062FJ / BM1P101FJ / BM1P102FJ
General
The PWM type DC/DC converter (BM1Pxxx) for
AC/DC provide an optimum system for all products
that include an electrical outlet.
BM1Pxxx supports both isolated and non-isolated
devices, enabling simpler design of various types of
low-power electrical converters.
BM1Pxxx built in a HV starter circuit that tolerates
650V, it contributes to low-power consumption.
With switching MOSFET and current detection
resistors as external devices, a higher degree of
design freedom is achieved. Since current mode
control is utilized, current is restricted in each cycle
and excellent performance is demonstrated in
bandwidth and transient response.
At light load, the switching frequency is reduced and
high efficiency is achieved.
A frequency hopping function is also on chip, which
contributes to low EMI.
BM1Pxxx has rich protection.
Basic specifications
„ Operating Power Supply Voltage Range:
VCC 8.9V to 26.0V
VH
to 600V
„ Operating Current: Normal Mode0.60mA (Typ.)
Burst Mode0.35mA(Typ.)
„ Oscillation Frequency: BM1P06xFJ65kHz(Typ.)
BM1P10xFJ100kHz(Typ.)
„ Operating Temperature:
- 40deg. to +85deg.
Features
„ PWM frequency : 65kHz, 100kHz
„ PWM current mode method
„ Frequency Hopping function
„ Burst operation / Frequency reduction function
when load is light
„ Built-in 650V start circuit
„ VCC pin under voltage protection
„ VCC pin over voltage protection
„ CS pin Open protection
„ CS pin Leading-Edge-Blanking function
„ Per-cycle over current protection circuit
„ Current protection with AC voltage compensation
„ Soft start
„ Secondary Over current protection circuit
Package
SOP-J8
4.90mm×3.90mm ×1.65mm
(Typ.) (Typ.) (TYP.)
Pitch 1.27mm
TYP.
Applications
AC adapters and household appliances (vacuum
cleaners, humidifiers, air cleaners, air conditioners, IH
cooking heaters, rice cookers, etc.)
Application circuit
Line-Up
BM1P101FJ
BM1P102FJ
BM1P061FJ
BM1P062FJ
Frequency
100kHz
100kHz
65kHz
65kHz
VCCOVP
Auto Restart
Latch
Auto Restart
Latch
Figure 1Application circuit
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
This product is not designed protection against radioactive rays
1/18
TSZ02201-0F2F0A200090-1-2
22.NOV.2012.Rev.003







BM1P062FJ pdf, 数据表
BM1P061FJ / BM1P062FJ / BM1P101FJ / BM1P102FJ
Datasheet
(3) VCC pin protection function
BM1Pxxx built in VCCUVLO (Under Voltage Lock Out), VCC OVP (Over Voltage Protection) and VCC charge function that
operates in case of dropping the VCC voltage.
This function monitors VCC pin and prevent VCC pin from destroying switching MOSFET at abnormal voltage.
VCC charge function stabilizes the secondary output voltage to be charged from the high voltage line by start circuit when
dropping the VCC voltage.
(3-1) VCC UVLO VCC OVP function
VCCUVLO is auto recovery comparator. BM1Pxx1 series have auto recovery type VCCOVP that has voltage hysteresis.
BM1Pxx2 series has latch type VCCOVP.
Refer to the operation figure-8.
VCCOVP operates detection in case of continuing VCC pin voltage > VOVP1 typ=27.5V.
This function built in mask time TLATCHtyp=100us.By this function, this IC masks pin generated surge etc. (please refer to
section (7))
Vovp
VCCuvlo1
VCCCHG2
VCCCHG1
VCCuvlo2
Vlatch
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
AB
ON
ON
ON ON ON
OFF OFF
OFF
OFF
ON
OFF
L : Normal
H : Latch
TLATCH
CD
EF GH
I JK
A
OFF
OFF
ON
Figure 8. VCC UVLO / OVP Timing Chart
A:The VH pin voltage input, the VCC pin voltage starts rising.
B:VCC>Vuvlo1, the DC/DC operation starts
C:VCC > VOVP1 , the VCCOVP function is detected.
D:VCC > VOVP1 continues TLATCH(typ =100us), switching is stopped by the VCCOVP function (LATCH MODE) .
E:VCC< VCHG1, the VCC charge function operates and the VCC voltage is rise.
F:VCC > VCHG2, the VCC charge function is stopped.
G:Same as E.
H:Same as F.
I: The VH pin is OPEN. The VCC Voltage is fall.
J: VCC<Vuvlo2, the DC/DC operation stops
K: VCC<VLATCH,, the LATCH function is reset.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
8/18
TSZ02201-0F2F0A200090-1-2
22.NOV.2012.Rev.003







BM1P062FJ equivalent, schematic
BM1P061FJ / BM1P062FJ / BM1P101FJ / BM1P102FJ
Datasheet
Thermal loss
The thermal design should set operation for the following conditions.
(Since the temperature shown below is the guaranteed temperature, be sure to take a margin into account.)
1. The ambient temperature Ta must be 85 or less.
2. The IC’s loss must be within the allowable dissipation Pd.
The thermal abatement characteristics are as follows.
(PCB: 70 mm × 70 mm × 1.6 mm, mounted on glass epoxy substrate)
1000
900
800
700
600
500
400
300
200
100
0
0
25 50 75 100 125 150
Ta[]
Figure 20. Thermal Abatement Characteristics
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
16/18
TSZ02201-0F2F0A200090-1-2
22.NOV.2012.Rev.003










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