bd9240fv ROHM Co. Ltd., bd9240fv Datasheet - Page 3

• Manufacturer Part Number: bd9240fv
• Description: Dc-ac Inverter Control Ic
• Manufacturer: ROHM Co. Ltd.

〇Package Dimensions
〇Block Diagram
○Pin Description
（ （FAIL BLOCK : FAIL pin） ）
FAIL High voltage
FAIL Low voltage
（ （TIMER LATCH BLOCK : CP pin） ）
CP timer latch detect voltage
CP timer latch charge current
（ （COMP BLOCK） ）
COMP over voltage detect voltage
Hysteresis width （COMP）
（ （ PHASE SHIFT BLOCK） ）
PH voltage H 1
PH voltage H 2
PH voltage L
(This product is not designed to be radiation-resistant.)
PIN No.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
PIN NAME
PGND
NA2
NB2
UVLO
CLKIN
SRT
RT
GND
BCT
BRT
VREF
DUTY1
DUTY2
STB
Power Ground for FET drivers
NMOS FET driver (Channel 2 side)
NMOS FET driver (Channel 2 side)
Input of Under Voltage Lock Out
CT Synchronous signal input
External resistor between SRT and RT for adjustment
frequency of kick-off
External resistor between RT and GND for adjustment
frequency of saw tooth wave
Ground
External capacitor between BCT and GND for adjusting
the BURST triangle oscillator
External resistor between BRT and GND for adjustment
frequency of Burst dimming
Reference voltage input pin for Error amplifier
Control Burst-dimming by PWM signal or DC (Channel 1)
Control Burst-dimming by PWM signal or DC (Channel 2)
Stand-by switch
BD9240FV
SSOP-B28 (unit:mm)
FUNCTION
VFAIL_H
VFAIL_L
⊿Vcomp
VCOMP
VphH1
VphH2
VphL
VCP
ICP
GND
STB
FB2
VS2
FB1
VS1
IS2
SS
IS1
BLOCK
STB
DEVICE NAME
VREF
BLOCK
ADIM
SYSTEM ON/OFF
Lot No.
VCCx0.85
0.138
－0.3
2.95
-0.3
1.91
0.85
3.88
BLOCK
BLOCK
F/B1
F/B2
VS1, VS2
IS1, IS2
2
COMP
REV. A
CLKIN
BLOCK
BLOCK
OSC
BLOCK
PWM2
PWM1
RT
PROTECT
BLOCK
CP
PH
SRT
PIN No.
BRT
BLOCK
BOSC
BCT DUTY1
FAIL
15
16
17
18
19
20
21
22
23
24
25
26
27
28
LOGIC
BLOCK
0.185
VCC
2.00
1.05
4.00
3.1
-
DUTY2
BD9240F
-
-
-
BLOCK
OUTPUT1
OUTPUT2
UVLO
UVLO
BLOCK
BLOCK
SOP28 (unit:mm)
VCC
VCC
VCC
PIN NAME
CP
FAIL
PH
VS2
IS2
FB2
VS1
IS1
FB1
SS
COMP
VCC
NB1
NA1
PGND
NA1
NB1
NA2
NB2
VCCx0.5
0.232
3.25
2.09
1.25
4.12
0.5
VCC
0.8
External capacitor between CP and GND for timer latch
Error Indication output pin Normal : H, Error : L
Selector pin for phase shift
Error amplifier input 1 (Channel 2)
Error amplifier input 2 (Channel 2)
Error amplifier output (Channel 2)
Error amplifier input 1 (Channel 1)
Error amplifier input 2 (Channel 1)
Error amplifier output (Channel 1)
External capacitor between SS and GND for Soft Start
Control and detect the time of Soft Start
Input of over voltage detector
Power supply input with UVLO Protection
NMOS FET driver (Channel 1 side)
NMOS FET driver (Channel 1 side)
Lot No.
V
V
uA
V
V
V
V
V
V
VSS > 2.4V
PHASESHIFT MODE1
PHASESHIFT MODE2
PHASESHIFT MODE3
FUNCTION
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