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BM1P068FJ の電気的特性と機能

BM1P068FJのメーカーはROHM Semiconductorです、この部品の機能は「PWM Control IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 BM1P068FJ
部品説明 PWM Control IC
メーカ ROHM Semiconductor
ロゴ ROHM Semiconductor ロゴ 




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BM1P068FJ Datasheet, BM1P068FJ PDF,ピン配置, 機能
Datasheet
AC/DC Drivers
PWM Control IC
BM1P068FJ
General
The PWM control IC for AC/DC “BM1P068FJ”
provides an optimum system for all products that
include an electrical outlet.
A built-in start circuit that withstands 650 V helps to
keep power consumption low. Both isolated and
non-isolated versions are supported, making for
simpler design of various types of low-power
converters. Switching MOSFET and current detection
resistors are external devices, thus achieving a higher
degree of freedom in power supply design. The
switching frequency is set as fixed. Since current mode
control is used, a current limit is imposed in each cycle,
and excellent performance is demonstrated in
bandwidth and transient response. With a light load,
frequency is reduced and higher efficiency is realized.
A frequency hopping function is also built in,
contributing to low EMI.
Also on chip are soft start and burst functions, a
per-cycle overcurrent limiter, VCC overvoltage
protection, overload protection, and other protection
functions.
Basic Specifications
Operating power supply voltage range: VCC 8.9 V to 26.0 V
VH: to 600 V
Operating current:
Normal: 0.60 mA (Typ.)
Burst mode: 0.35 mA (Typ.)
Oscillation frequency:
BM1P068FJ: 65 kHz (Typ.)
Operating temperature range:
-40°C to +85°C
Application circuit
Features
PWM frequency: 65 kHz, 100 kHz
PWM current mode method
Frequency hopping function
Burst operation during light load / Frequency
reduction function
650 V start circuit
VCC pin undervoltage protection
VCC pin overvoltage protection
CS pin open protection
CS pin Leading-Edge-Blanking function
Per-cycle overcurrent limiter function
Overcurrent limiter with AC voltage compensation
function
Soft start function
Secondary overcurrent protection circuit
Package
SOP-J8
4.90 mm × 6.00 mm × 1.65 mm pitch 1.27 mm
(Typ.)
(Typ.) (Typ.)
(Typ.)
Applications
AC adapters, TVs, and household appliances
(vacuum cleaners, humidifiers, air cleaners, air
conditioners, IH cooking heaters, rice cookers, etc.)
Line-up
Figure 1Application Circuit
Frequency VCCOVP VCC recharge
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BM1P108FJ
65kHz
65kHz
65kHz
65kHz
65kHz
65kHz
65kHz
65kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
Auto-restart
Latch
×
×
×
×
×
×
×
×
X-cap
discharge
×
×
×
×
×
×
×
×
×
×
×
×
Brown-out
×
×
×
×
×
×
×
×
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
This product is not designed for protection against radioactive rays
1/18
TSZ02201-0F2F0A200190-1-2
24.Oct.2013.Rev.001

1 Page





BM1P068FJ pdf, ピン配列
BM1P068FJ
Datasheet
Electrical characteristics of control IC block (Unless otherwise noted, Ta = 25°C, VCC = 15 V)
Parameter
Symbol
Min.
Rating
Typ.
Max.
Unit
Conditions
[PWM type DC/DC driver block]
Oscillation frequency 1a
Oscillation frequency 2
Frequency hopping range
Hopping fluctuation frequency
Minimum pulse width
Soft start time 1
Soft start time 2
Soft start time 3
Soft start time 4
Maximum duty
FB pin pull-up resistance
FB / CS gain
FB burst voltage 1
FB burst voltage 2
FBOLP voltage 1a
FBOLP voltage 1b
FBOLP detection timer
FSW1a
FSW2
FDEL1
FCH
Tmin
TSS1
TSS2
TSS3
TSS4
Dmax
RFB
Gain
VBST1
VBST2
VFOLP1A
VFOLP1B
TFOLP
60
-
-
75
-
0.30
0.60
1.20
2.40
68.0
22
-
0.300
0.350
2.60
-
44
65
25
4.0
125
400
0.50
1.00
2.00
4.00
75.0
30
4.00
0.400
0.450
2.80
VFOLP2A
-0.2
64
70
-
-
175
-
0.70
1.40
2.80
5.60
82.0
38
-
0.500
0.550
3.00
-
84
kHz
FB = 2.00 V average
frequency
kHz
FB = 0.40 V average
frequency
kHz
FB = 2.00 V average
frequency
Hz
ns
ms
ms
ms
ms
%
k
V/V
V FB drop
V FB rise
V
When overload is detected
(FB rise)
V
When overload is detected
(FB drop)
ms
[Overcurrent detection block]
Overcurrent detection voltage
Overcurrent detection voltage
SS1
Overcurrent detection voltage
SS2
Overcurrent detection voltage
SS3
Overcurrent detection voltage
SS4
Leading edge blanking time
Overcurrent detection AC
compensation factor
VCS
VCS_SS1
VCS_SS2
VCS_SS3
VCS_SS4
TLEB
KCS
0.380
-
-
-
-
-
12
0.400
0.100
0.150
0.200
0.300
250
20
0.420
-
-
-
-
-
28
V
V
V
V
V
ns
mV/us
Ton = 0 us
0 [ms] ~ Tss1 [ms]
TSS1 [ms] ~ TSS2 [ms]
TSS2 [ms] ~ TSS3[ms]
TSS3 [ms] ~ TSS4 [ms]
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
3/26
TSZ02201-0F2F0A200190-1-2
24.Oct.2013.Rev.001


3Pages


BM1P068FJ 電子部品, 半導体
BM1P068FJ
Datasheet
Description of application operations in blocks
(1) Start circuit (VH pin: 8 pin)
This IC has a built-in start circuit (withstands 650 V). This enables both low standby mode power and high-speed
startup.
This start circuit operates only at startup. The current flow when operating is shown in Figure 5.
After startup, the power consumed is only for the idling current ISTART3 (typ = 10 uA).
ex) When Vac = 100 V, power consumption is from start circuit only
PVH = 100 V*2*10 uA = 1.41 mW
ex) When Vac = 240 V, power consumption is from start circuit only
PVH = 240 V*2*10 uA = 3.38 mW
Startup time is determined based on the inflow current for the VH pin and the capacitance for the VCC pin.
Startup time reference values are shown in Figure 6. For example, when Cvcc = 10 uF, startup takes about 0.07 seconds.
When the VCC pin has been shorted by GND, the ISTART1 current in Figure 5 flows.
When the VH pin has been shorted by GND, a large current flows to GND from the VH line. To prevent this, insert resistor
RVH (5 k~ 60 k) to limit the current between the VH line and the VH pin of the IC.
When the VH pin is shorted, the power of VH2/RVH is applied to the resistor. Therefore, select a resistor size that is able
to tolerate this amount of power.
If one resistor is not enough for the allowable power, connect two or more resistors in series.
Figure 4. Block Diagram of Start Circuit
Figure 5. Start Current vs VCC Voltage
(* Start current flows from the VH pin.)
The operating waveform at startup is as follows.
1.0 
0.9 
0.8 
0.7 
0.6 
0.5 
0.4 
0.3 
0.2 
0.1 
0.0 
0
5 10 15 20 25 30 35 40 45 50
Cvcc  [uF]
Figure 6. Startup Time (Reference Value)
(CVCC is capacitance for the VCC pin.)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
6/26
TSZ02201-0F2F0A200190-1-2
24.Oct.2013.Rev.001

6 Page



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部品番号部品説明メーカ
BM1P068FJ

PWM Control IC

ROHM Semiconductor
ROHM Semiconductor


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