Datasheet
AC/DC Drivers
Power Factor Correction and
Quasi-Resonant DC/DC converter IC
BM1C102F
General Description
The compounded LSI of the Power Factor Correction (PFC)
converter and Quasi-Resonant (QR) controller type DC/DC
converter IC provides an optimum system for all products that
include an electrical outlet. BM1C102F has a built in High
Voltage starter circuit that tolerates 650V and X-Cap discharge
function, and contributes to low power consumption and high
speed start.
The PFC part operates by Boundary Conduction Mode
(BCM). It reduces the switching loss and the switching noise.
Because of zero current detection (ZCD) by a resistance, this
solution achieves no auxiliary winding and reduces external
parts and the bias current.
The DC/DC part operates by Quasi-Resonant Mode. This
method enables soft switching and helps to keep the EMI low.
With putting MOSFET for switching and current detection
resistors as external devices, a higher freedom design is
possible.
This IC has double over voltage protection for the PFC output
terminal. IC makes the standby power consumption low by
the PFC ON/OFF control function. The IC includes various
protect functions such as VCC over voltage protection,
external latch protection, brown out protection, soft start
function, per-cycle current limiter and over load protection.
PFC ON/OFF setting
QR low power when load is light (Burst operation) and
frequency decrease function
QR maximum frequency control (120kHz)
QR_CS pin open protection and OCP function
QR Soft Start function
QR secondary side protection circuit of over-current
QR_ZT pin 2 step timeout function and OVP function
Applications
AC adapters, TV, Lighting, Household appliances (Vacuum
cleaners, Air cleaners, Air conditioners, IH cooking
heaters, Rice cookers, etc.).
Key Specifications
Operating Power Supply
Voltage Range:
Operating Current:
VCC
8.9V to 26.0V
80V to 500V
1.2mA (Typ)
VH_IN
Normal
Burst
PFC
0.6mA (Typ)
Max frequency:
External setting
120kHz (Typ)
-40°C to 105°C
QR
The range of temperature:
Package W(Typ) x D(Typ) x H(Max)
Features
SOP18
11.20mm × 7.80mm × 2.01mm pitch 1.27mm
PFC+QR Combo IC
Built-in 650V tolerance start circuit
VCC pin: under and over voltage protection
Brown out function
External latch terminal function
PFC boundary conduction mode (voltage control)
PFC Zero Cross Detection
PFC variable max frequency
PFC Dynamic & Static OVP function
SOP18
Typical Application Circuit
FUSE
Diode
Bridge
Filter
AC
P_VS
VCC
QR_ZT
SBD
P_IS
QR_OUT
QR_OUT
P_IS
13
QR_CS
12
P_VS
11
QR_CS
10
P_OVP
18
VH_IN
17
(N.C.)
16
15
14
P_TIMER QR_OUT P_OUT
QR_CS
P_IS
P_VS
QR_FB
BM1C102F
BM1C10xF
P_EO
6
COMP
5
BR
7
P_RT P_OFFSET
VCC
1
GND
2
QR_FB QR_ZT
3
4
8
9
μ-
com
BR
VCC
QR_FB
QR_ZT
BR
Figure 1. Application circuit
○Product structure:Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays
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TSZ02201-0F1F0A200170-1-2
22.Mar.2017 Rev.002
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