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BYD Microelectronics

BF1510 Datasheet Preview

BF1510 Datasheet

Offline AC/DC Switcher IC

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BF1510
BYD Microelectronics Co., Ltd.
Offline AC/DC Switcher IC
General Description
BF1510 is a highly integrated summing mode PWM control IC
optimized for high performance, low standby power and cost
effective offline flyback converter applications in sub 30W
range.
The PWM switch frequency is created by a VCO (voltage
control oscillator) which consisted in BF1510. Simultaneously,
the frequency is externally programmable and trimmed to tight
range. In a typical condition (RI=100K), the switch frequency
is 65 KHz.
At no load or light load condition, the IC operates in extended
“burst mode” to minimize switching loss, lower standby power
and higher conversion efficiency is thus achieved.
BF1510 offers complete protection coverage with auto
self-recovery including cycle-by-cycle current limiting, over
load protection and SENSE pin short protection, etc. The gate
driver is clamped to maximum about 12V to protect the power
MOSFET.
Features
z Summing-mode PWM
z Extended burst mode control to improve efficiency
and standby power
z Programmable PWM switch frequency
z Built-in soft start
z Low start-up current and low operating current
z UVLO(under voltage lockout)
z Single fault protection
z LEB(leading edge blanking)
z Audio noise free operation
z Small SOT23-6 package
Applications
z Power adaptor
z Battery charger
z Open frame switching power supply
Typical Application
Datasheet
TS-POM-PD-0036 Rev.A/0
Page 1 of 10




BYD Microelectronics

BF1510 Datasheet Preview

BF1510 Datasheet

Offline AC/DC Switcher IC

No Preview Available !

BYD Microelectronics Co., Ltd.
Block Diagram
BF1510
Package Type
Pin Description
Pin Num
1
2
3
4
5
6
Pin Name
RI
GND
SENSE
NC
GATE
VDD
Description
Internal Oscillator frequency set pin. A resistor connected
between RI and GND sets the PWM frequency.
Ground
Current sense input pin, connected to MOSFET current sensing
resistor node.
Not connected
Gate drive output for the external power MOSFET switch
Power supply
Datasheet
TS-POM-PD-0036 Rev.A/0
Page 2 of 10


Part Number BF1510
Description Offline AC/DC Switcher IC
Maker BYD Microelectronics
Total Page 10 Pages
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