TB6818FG
Toshiba BiCD Integrated Circuit Silicon Monolithic
TB6818FG
Power Factor Correction Control for CCM
Features
•
•
•
•
•
•
•
•
Operating voltage range : 8.4 V (MIN) to 26V (MAX)
Starting voltage / current : 10.0 V (typ.) / 30
μA
(MAX)
Pulse output mute function (Starting)
Avoiding PFC transformer noise
Maximum drive current : 1.0 A (typ.)
Consumption current : 250
μA
(typ.) (Standby mode)
AC instantaneously-stop detection
Built-in protection circuits
・
DC input OVP (OVP-1)
・
PFC output OVP (OVP-2)
・
UVLO
・
Feedback loop open detection (FOD)
・
TSD
Weight : 0.16 g (typ.)
SSOP16-P-225-1.00A
Note: Carefully handle this IC by using an earth band, a conductive sheet, or an ionizer to reduce ESD. Pay attention to
temperature and humidity to protect the IC from ESD.
Note: Do not insert devices in the wrong orientation to prevent from destroying the IC.
© 2014 TOSHIBA Corporation
1
2014-10-01
TB6818FG
Block Diagram
AC input
R
VSENSE
R
ISENSE
VCC
PFC OUT
+
VSENSE
IN
Vcc
SS
16
OPP&SOFT START
15
S-GND
14
13
ISENSE
IN
ISENSE
12 OUT
Ｖ½½½ （５Ｖ）
7
VCC
10
PULSE
OUT
9
8
P-GND
11
OCL
+
GND
+
-
2
STB
BIAS
+
UVLO
TSD
OVP-１
Vref
MULT
VFB
5
-
+
FB IN
1.25V
6
+
-
0.25V
-
+
0.625V
-
+
1.33V
1.31V
To inner circuit
-
E-Amp.
PWM CONT
+
-
FOD
SS
-
+
S
R
Q
Q
N
Slope
compensation
current
SOFT START
S
Q
Q
N
R
OVP-２
COMP.
1
DELAY
3
OSC
4
FREQ
SET(R)
FREQ
SET(C)
Fig. 1 Block Diagram
Pin Assignment and Descriptions
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin name
DELAY
STB
FREQ.
SET (R)
FREQ.
SET(C)
VFB
FB IN
Vref
P-GND
PULSE
OUT
VCC
OCL
ISENSE
OUT
ISENSE
IN
S-GND
VSENSE
IN
OPP &
SOFT
START
Descriptions
Pin for setting time of instantaneous-stop detection. Connect the capacitor to the GND.
Pin for controlling ON and OFF for the IC.
1.5 V (MAX) or less: Operation mode;
3.5 V (MIN) or more: Standby mode
Remarks
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
Pin for setting oscillation frequency. Connect the resistance to the GND.
Pin for setting oscillation frequency. Connect the capacitor to the GND.
Outputting error amplifier.
Feed back pin of output voltage (inputting error amplifier).
Pin for outputting reference voltage of internal IC. Connect the capacitor to the GND. Voltage of 5.0
V (typ.) is outputted for this pin. Take care not to supply the current to the exterior from this pin.
GND pin of PULSE OUT drive circuit.
Output pin for switching pulse to the FET gate.
Supply voltage input pin for IC operation. Operation voltage range: 8.4 V (MIN) to 26 V (MAX).
Pin for detecting over-current which flows to FET gate.
Output pin of amplifier for detecting current waveform.
Input pin of amplifier for detecting current waveform.
GND pin of signal control circuit.
Pin for detecting full-wave rectification voltage waveform of AC.
Pin for setting soft start time in IC startup. Assign the resistance and the capacitor in parallel and
connect them to the GND.
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2014-10-01
TB6818FG
Application Circuit
PFC OUT
R
VSENSE
Ｖ½½
R
ISENSE
１６
１５
１４
S-GND
１３
ISENSE
IN
FREQ.
SET(C)
１２
ISENSE
OUT
VFB
１１
OCL
１０
VCC
９
+
PULSE
OUT
P-GND
OPP &
VSENSE
SOFT START
IN
DELAY
STB
FREQ.
SET(R)
FB IN
Vref
１
２
３
R
OSC
C
OSC
４
５
６
７
８
AC 85 V-264 V
GND
Fig. 2 Application Circuit (External Vcc supply)
Start up resistance
R
VSENSE
R
ISENSE
+
１６
１５
１４
S-GND
１３
ISENSE
IN
FREQ.
SET(C)
１２
ISENSE
OUT
VFB
１１
OCL
１０
VCC
９
+
PULSE
OUT
P-GND
OPP &
VSENSE
SOFT START
IN
DELAY
STB
FREQ.
SET(R)
FB IN
Vref
１
２
R
OSC
３
C
OSC
４
５
６
７
８
AC 85 V-264 V
GND
Fig. 3 Application Circuit (Self Vcc supply)
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2014-10-01
+
+
PFC OUT
TB6818FG
Absolute maximum rating (Ta = 25°C)
Item
Power supply voltage
Maximum excitation voltage of each pin
Minimum excitation voltage of each pin
Power drop 1 (*1)
Operating temperature (*2)
Junction temperature
Storage temperature
Symbol
Vccmax
Vinmax
Vinmin
PDmax
Topr
Tj
Tstg
Rating
28.0
(*3)
GND - 0.3
1190
-25
to 85
150
- 55 to 150
Unit
V
V
V
mW
°C
°C
°C
(*1) When Ta is 25°C or more, it decreases at the rate of 9.52 mW per 1°C rise in temperature.
(*2) Within this range, the IC operates without any problems.
(
*3
)
Maximum excitation voltage of each pin
No.
1
2
3
4
5
6
7
8
Pin name
DELAY
STB
FREQ. SET (R)
FREQ. SET (C)
VFB
FB IN
Vref
GND
Rating
5.0
Vcc-0.3
(*4)
(*4)
5.0
5.0
(*4)
―
Unit
No.
9
10
11
Pin name
PULSE OUT
VCC
OCL
ISENSE OUT
ISENSE IN
SENSE
VSENSE
GND
IN
Rating
(*4)
28.0
5.0
5.0
5.0
0.3
5.0
5.0
Unit
V
12
13
14
15
16
V
OPP & SOFT START
(*4) Do not apply voltage externally.
Power consumption [mW]
1190
619
0
25
Fig. 4
85
150
Ta
[
°C
]
Relationship between temperature drop and power consumption
4
2014-10-01
TB6818FG
Operating Conditions (Ta = 25°C)
Item
Power supply voltage (Note 3)
Pin No.
No. 10 pin
Min.
8.4
Typ.
-
Max.
26.0
Unit
V
(Note 3) The power supply voltage range to operate the IC stably.
10.0V (typ.) or more should be applied to start the IC.
Electrical Characteristics
1) DC Characteristics
(
Unless otherwise specified, Vcc = 15 V and Ta = 25°C
)
Item
Pin No.
Symbol
Min.
Consumption
I Load Off
No. 10 pin
3.3
current 1
Condition: Pin 10 (PULSE OUT) is open.
Vstb = 1.0 V Rosc = 12 kΩ Cosc = 470 pF fosc = 75 kHz
Typ.
5.0
Max.
7.2
Unit
mA
Consumption
I On
No. 10 pin
80
100
120
current 2
Condition: Resistance load (150
Ω)
is connected between pin 10 (PULSE OUT).
Vstb = 4.0 V
→
1.0 V
Rosc = 12 kΩ
Cosc = 470 pF
fosc = 75 kHz
Consumption
No. 10 pin
I STB
20
50
100
current 3
Condition: Resistance load (150
Ω)
is connected between pin 10 (PULSE OUT).
Vstb = 1.0 V
→
4.0 V (Standby mode)
Rosc = 12 kΩ Cosc = 470 pF
fosc : Oscillation stop mode
mA
μA
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2014-10-01
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