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부품번호 | BM1P105FJ 기능 |
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기능 | PWM Control IC | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 30 페이지수
Datasheet
AC/DC Drivers
PWM Control IC
BM1P105FJ
● General
The PWM control IC for AC/DC “BM1P105FJ”
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:
BM1P105FJ: 100 kHz (Typ.)
Operating temperature range:
-40°C to +85°C
● Application circuit
● Features
PWM frequency: 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
Frequency VCCOVP VCC recharge
BM1P061FJ
BM1P062FJ
BM1P063FJ
BM1P064FJ
BM1P065FJ
BM1P066FJ
BM1P067FJ
BM1P068FJ
BM1P101FJ
BM1P102FJ
BM1P103FJ
BM1P104FJ
BM1P105FJ
BM1P106FJ
BM1P107FJ
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
〇
〇
〇
〇
×
×
×
×
〇
〇
〇
〇
×
×
×
×
X-cap
discharge
〇
〇
×
×
×
×
×
×
〇
〇
×
×
×
×
×
×
Brown-out
〇
〇
×
×
〇
〇
×
×
〇
〇
×
×
〇
〇
×
×
Figure 1.Application Circuit
○ Product structure:Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
1/27
TSZ02201-0F2F0A200170-1-2
2.Oct.2013.Rev.001
BM1P105FJ
● Pin Descriptions
Table1. I/O Pin Functions
No. Pin Name
1 ACMONI
2 FB
3 CS
4 GND
5 OUT
6 VCC
7 N.C.
8 VH
I/O Function
I Comparator input pin
I Feedback signal input pin
I Primary current sense pin
I/O GND pin
O External MOS drive pin
I/O Power supply input pin
- Non Connection
I Start circuit pin
● I/O Equivalent Circuit Diagram
Datasheet
ESD Diode
VCC
-
○
○
○
○
-
-
-
GND
○
○
○
-
○
○
-
○
Figure 2. I/O Equivalent Circuit Diagram
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/27
TSZ02201-0F2F0A200170-1-2
2.Oct.2013.Rev.001
4페이지 BM1P105FJ
The operating waveform at startup is shown in Figure 7.
VH
Voltage
Datasheet
ISTART2
VH input
current
ISTART1
ISTART3
VUVLO1
VCC(5pin) VSC
Switing
Set voltage
Secondary
output
A
B
CD
Figure 7. Operating Waveform at Startup
A: VH voltage is applied when plugged into the outlet. At that time, charging starts from the VH pin via the start circuit to
the VCC pin.
At that time, VCC < VSC (typ = 0.8 V), so the VH input current is limited to ISTART1 by the VCC pin short protection
function.
B: Since VCC voltage > VSC (typ = 0.8 V), VCC short protection is cancelled and current flow is from the VH input current.
C: Since VCC voltage > VUVLO1 (typ = 13.5 V), the start circuit is stopped and the VH input current flow is only ISTART3
(typ = 10 uA).
When switching starts, secondary output begins to increase, but since secondary output is low, the VCC pin voltage is
reduced. The drop rate of VCC is determined by the consumption current between the VCC pin capacitor and the IC
and by the load current connected to the VCC pin. (V/t = Cvcc/Icc)
D: Since secondary output has risen to a constant voltage, voltage is applied from the auxiliary winding to the VCC pin,
and VCC voltage is stabilized.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
7/27
TSZ02201-0F2F0A200170-1-2
2.Oct.2013.Rev.001
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부품번호 | 상세설명 및 기능 | 제조사 |
BM1P105FJ | PWM Control IC | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |