BM1051F Datasheet PDF - Rohm

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BM1051F
Rohm

Part Number BM1051F
Description Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC
Page 30 Pages


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Datasheet
Quasi-Resonant Control DC/DC
converter and Power Factor Correction
converter IC for AC/DC Converter
BM1051F
General Description
BM1051F is compounded LSI of Power Factor Correction
converter (PFC) for harmonic solution and DC/DC converter
(DC/DC). Because DC/DC operates on Quasi-resonant
method, DC/DC contributes to Low EMI.
BM1051F built in a HV starter circuit that tolerates 650V.
Because of putting the current sense resistors externally
both the PFC part and the DC/DC part, IC enables power
supply design free.
In the PFC part, IC adopts peak current control operation.
Suitable application is proposed by a various protection
circuit, such as the multiplier with a revision circuit on the AC
voltage falls, the load regulation revision circuit, and the
maximum power feed-forward circuit, etc.
The Quasi-resonant system of a DC/DC part contributes to
low EMI because PFC operates by soft switching.
A burst mode is built in, so the power is reduced at light load.
Various protection functions, such as a soft start function, a
burst function, an over-current limiting for every cycle,
overvoltage protection, and over current protection, are built
in. The pin for communicated control with a controller and the
external stop pin are prepared; it proposes the system that
can be adapted for various applications.
Basic specifications
Operating Power Supply Voltage Range:
VCC8.0 to 24.0V
Operating Current:
QR ON (PFC OFF)1.20mA(pulse on)
QR ON (PFC OFF)1.00mA(pulse off)
QR ON (PFC ON)1.80mA(pulse on)
Oscillation Frequency QR part :120kHz(FB=2.0V typ)
Operating Temperature: -40to +85
Typical Application Circuit(s)
+
AC
85-265Vac
-
FUSE
Filter
Diode
Bridge
P_OUT
P_CS
P_VS
VCC
QR_ZT
BD9212F
4Ch LEDドライバ
FET内蔵
DCDC 無し
DCD C
BD92XX
DC/DC
音声
QR_ZT QR_FB QR_CS
BM1051
VCC QR_CS
マイコン
P_VS
P_CS
P_OUT
QR_FB
Features
Quasi-resonant circuit + PFC circuit
Built-in HV Starter circuit
Low consumption current (typ.10uA) when starter
circuit is OFF.
Quasi resonant circuit
Max operating frequency(120kHz)
Frequency reduction function
Over-current limiting variable function
Pulse-by-pulse over-current protection circuit
Built-in Soft start
Voltage protection function (brown out) during low
input
ZT pin Over Voltage Protection
Output overload protection (auto recovery /latch
switching enabled)
250nsec Leading-Edge Blanking
Power Factor Correction circuit
Peak current control (65kHz)
Per-cycle over current protection circuit
Maximum power revision
the multiplier with a revision circuit when the AC
voltage falls
the load change measure circuit
Selectable protection method by LATCH/AUTOR
terminal.
LATCH/AUTOR=H : Latch
LATCH/AUTOR=L : Auto recovery
External stop function (COMP pin)
AC input voltage stop detected function (ACDET)
Built-in PFC stop terminal (PFCON/OFF)
Package(s)
SOP24 15.0mm×5.40mm ×1.80mm pitch1.27mm
(Typ.) (Typ.) (TYP.) TYP.
Applications
TV, AC adapters, printers, LED lighting
Figure 1. Application circuit
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed for protection against radioactive rays
1/47
TSZ02201-0F1F0A200020-1-2
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BM1051F
Datasheet
Absolute Maximum Ratings (Ta = 25)
Parameter
Maximum applied voltage 1
Maximum applied voltage 2
Symbol
Vmax1
Vmax2
Maximum applied voltage 3
Vmax3
Maximum applied voltage 4
output peak current 1
output peak current 2
QR_ZT pin current 1
QR_ZT pin current 2
Allowable dissipation
Operating temperature range
Maximum junction temperature
Storage temperature range
Vmax4
IOH
IOL
ISZT1
ISZT2
Pd
Topr
Tjmax
Tstr
Rating
650
30
5.5
15
-0.5
1.0
-2.0
3.0
687.6 (Note1)
-40 +85
150
-55 +150
Unit Conditions
V VH_IN
V VCC, QR_SEL
P_BO, P_VSEO, P_VS, P_BOPK
V
P_CS,PFCON/OFF,COMP,
ACDET, ACTIMER,QR_CS, QR_ZT,
QR_FB,LATCH/AUTOR, VREF
V GCLAMP, P_OUT, QR_OUT
A QR_OUT, P_OUT
A QR_OUT, P_OUT
mA
mA
mW
oC
oC
oC
(Note1) When mounted (on 70 mm × 70 mm, 1.6 mm thick, glass epoxy on single-layer substrate).
Reduce to 5.5 mW/C when Ta = 25C or above.
Operating Conditions (Ta = 25)
Parameter
Power supply voltage range 1
Power supply voltage range 2
Power supply voltage range 3
Symbol
VCC
VH_IN
P_BO
Rating
8.024.0
80600
0.01.8
Unit Conditions
V VCC
V VH_IN
V P_BO
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
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BM1051F
Datasheet
Electrical Characteristics (Unless otherwise noted, Ta=25, VH_IN=320Vdc, VCC=12V)
Parameter
Symbol
Specifications
Minimum Standard Maximum
Unit
Circuit current
Conditions
Circuit current (ON) 1
Circuit current (ON) 2
Circuit current (ON) 3
Start circuit Block
Start current 1
Start current 2
OFF Current
VH voltage switched
start current
VREF Block
VREF output voltage
VREF output capacitor
GCLAMP voltage 1
GCLAMP voltage 2
VREF UVLO 1
VREF UVLO 2
VREF UVLO hysteresis
VCC UVLO voltage 1
VCC UVLO voltage 2
VCC UVLO hysteresis
VCC OVP voltage 1
VCC OVP voltage 2
VCC OVP hysteresis
Brown out detection voltage 1
Brown out detection voltage 2
Brown out hysteresis
Brown out detection
delay time 1
Brown out detection
delay time 2
Brown out detection
delay time 3
ION1
0.700
1.200
1.700
ION2
0.700
1.000
1.300
ION3
0.800
1.800
2.800
ISTART1
ISTART2
ISTART3
VSC
0.100
1.000
-
0.400
0.500
3.000
10
0.800
1.000
5.000
16
1.400
VREF1
CREF
GCL1
GCL2
VRUVLO1
VRUVLO2
VRUVLO3
VUVLO1
VUVLO2
VUVLO3
VOVP1
VOVP2
VOVP3
VBO1
VBO2
VBO3
TBO1
TBO2
TBO3
3.500
0.68
11.0
11.0
77.5
3.100V
4.000
1.00
12.5
12.5
87.5
(3.500V)
4.500
2.20
14.0
14.0
97.5
(3.900V)
52.5
(2.100V)
-
12.50
6.00
-
24.0
20.0
-
0.350
-
-
21.8
62.5
(2.500V)
25
1.000V
13.50
7.00
6.50
27.0
23.0
4.0
0.400
0.200
0.200
32.0
72.5
(2.900V)
-
14.50
8.00
-
30.0
26.0
-
0.450
-
-
42.2
87.0
128.0
169.0
170 250 330
VCC=12.0V
mA
(QR=ON, PFC=OFF)
QR_FB=1.0V
(during pulse operation)
VCC=12.0V
(QR =ON, PFC=OFF)
mA QR_FB=VREF
(during pulse operation
when OFF)
VCC=12.0V
mA
(QR =ON, PFC=ON)
QR_FB=1.0V
(during pulse operation)
mA VCC= 0V
mA VCC=10V
Input current from VH_IN
uA terminal after releasing
UVLO
V
V
uF
V VCC=15V
V VCC=22V
When VREF rise
% The ratio of VREF pin
voltage.
When VREF drop
% The ratio of VREF pin
voltage.
% V V VRUVLO3= RUVLO1- RUVLO2
V VCC rise
V VCC drop
V V V VUVLO3= UVLO1- UVLO2
V VCC rise
V VCC drop
V V V - VOVP3= OVP1
OVP2
V P_BO rise
V P_BO drop
V VBO3 = VBO1VBO2
ms
Times until ACDET logic
change ( ACTIMER=L)
ms
Times until ACDET logic
change ( ACTIMER=H)
ms
Times until PFC and QR
stop
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
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TSZ02201-0F1F0A200020-1-2
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BM1051F
Electrical Characteristics (Unless otherwise noted ,Ta=25,VH_IN=320Vdc,VCC=12V)
Parameter
Symbol
Specifications
Minimum Standard Maximum
Unit
ACDET pin characteristics
ACDET pin ON resister
RACDET
ACTIMER pin characteristics
50
100 200
ACTIMER pin input L level
ACTIMER pin input H level
ACTIMER pin
pull-down resistor
VACTIMEL
VACTIMEH
RACTIMEH
-
1.2
165
- 0.3 V
- -V
330 500 k
PFCON/OFF pin characteristics
PFCON/OFF pin input L level
PFCON/OFF pin input H level
PFCON/OFF pin
pull-down resistor
VPON/OFFL
VPON/OFFH
RPON/OFFH
-
1.2
50
- 0.3 V
- -V
100 150 k
PFCON/OFF pin timer time
TPFCON/OFF
LATCH/AUTOR pin characteristics
0.50
1.50 3.00 ms
LATCH/AUTOR pin
input L level
LATCH/AUTOR pin
input H level
VMODEL
VMODEH
-
1.2
- 0.3 V
- -V
LATCH/AUTOR pin
pull-down resistor
RMODEH
50
100 150 k
[COMP pin characteristics]
COMP pin detection voltage
COMP pin pull-up resistor
External Thermistor resistor
Latch release voltage
VCC pin voltage
VCOMP
RCOMP
RT
VLATCHOFF
0.370
19.4
3.32
-
0.500
25.9
3.70
VUVLO2 -0.5
0.630
32.3
4.08
-
V
k
k
V
Latch mask time
TCOMP
70
150 240 us
Datasheet
Conditions
PFC = ON
PFC = OFF
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/47
TSZ02201-0F1F0A200020-1-2
10.Apr.2015 Rev.002



BM1051F datasheet pdf
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BM1051F pdf
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BM1051F Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC BM1051F
Rohm
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