FAN6292 [ONSEMI]

Compact Secondary-Side Synchronous Rectifier Control;
FAN6292
型号: FAN6292
厂家: ONSEMI    ONSEMI
描述:

Compact Secondary-Side Synchronous Rectifier Control

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FAN6292BMX/FAN6292MX  
Compact Secondary-Side  
Synchronous Rectifier Control  
with USB Type-C Control  
FAN6292BMX/FAN6292MX are highly integrated, secondary-side  
power adaptor controllers compatible with Type-C control. Internally  
adopted synchronous rectifier control helps for less BOM counts as well  
as easy design.  
www.onsemi.com  
1
FAN6292BMX/FAN6292MX are also a source only USB Type-C  
controllers which are optimized for mobile chargers and power adapters.  
It supports standard 3 A VBUS current level. N-Channel MOSFET is  
compatible as a load switch, and helps to reduce BOM cost.  
8
TSSOP-8  
FAN6292BMX/FAN6292MX incorporate adaptive output under-voltage  
protection to improve system reliability.  
MARKING DIAGRAM  
Features  
Type-C Control for Standard 3 A VBUS Current  
N-Channel MOSFET Control as a Type-C Load Switch  
Internal Synchronous Rectifier Control Circuit  
ZXYTT  
6292  
TM  
Protections for Safe Operation; Output Under-Voltage-Protection  
Typical Applications  
1st Line:  
Battery Chargers for Smart Phones, Feature Phones, and Tablet PCs  
F: Corporate Logo  
Z: Assembly Plant Code  
X: Year Code  
AC-DC Adapters for Portable Devices that Require CV/CC Control  
Y: Week Code  
TT: Die Run Code  
2nd Line:  
3rd Line:  
6292 : IC Part Name for  
FAN6292MX  
6292B: IC Part Name for  
FAN6292BMX  
T: Package Type (M=SOIC)  
M: Manufacture Flow Code  
PIN CONNECTIONS  
CC2  
1
2
3
4
8
7
6
5
CC1  
BLD  
/ AUX  
GND  
LPC  
LGATE  
VIN  
GATE  
(TOP View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the  
package dimensions section on page 13 of this data sheet.  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number:  
FAN6292BMX/FAN6292MX  
February 2017- Rev. 1.0  
FAN6292MX/FAN6292BMX  
USB Type-C  
Load  
Switch  
GND  
GND  
RX1+  
RX1-  
VBUS  
SBU2  
D-  
L
Transformer  
VBUS  
TX1+  
TX1-  
VBUS  
CC1  
D+  
RSNU CSNU  
TH  
COUT  
CBUS  
Lm  
SR  
MOSFET  
BD  
VBUS  
CC1  
VBUS  
CIN1 CIN2  
AC IN  
DSNU  
RHV  
D-  
D+  
Fuse  
Q2  
SBU1  
VBUS  
RX2-  
RX2+  
GND  
CC2  
VBUS  
TX2-  
TX2+  
GND  
RGATE  
Q1  
CC2  
VBUS  
VBUS  
5
6
8
1
3
4
7
2
GATE  
LGATE  
RF  
RCS  
LPC  
CC1  
CC2  
VIN  
FAN6292  
BMX  
3
GATE  
CS  
1
RVSH  
DVDD  
CC1  
CC2  
GND  
2
2
FUNC  
GND  
VDD  
VS  
4
5
BLD/  
AUX  
CVDD  
RVSL  
CVS  
FAN105B  
Figure 1 FAN6292BMX Typical Application Schematic  
USB Type-C  
Load  
Switch  
GND  
TX1+  
TX1-  
VBUS  
CC1  
D+  
GND  
L
Transformer  
RX1+  
RX1-  
VBUS  
SBU2  
D-  
RSNU CSNU  
TH  
COUT  
CBUS  
SR  
MOSFET  
Lm  
BD  
VBUS  
CC1  
VBUS  
CIN1 CIN2  
AC IN  
DSNU  
RHV  
D-  
D+  
Fuse  
SBU1  
VBUS  
RX2-  
RX2+  
GND  
CC2  
VBUS  
TX2-  
TX2+  
GND  
RGATE  
Q1  
CC2  
VBUS  
VBUS  
5
6
8
1
3
4
7
2
GATE  
LGATE  
1
HV  
Gate  
4
3
RF  
RCS  
LPC  
CC1  
CC2  
VIN  
FAN6292  
MX  
2
9
NC  
FB  
CS  
RVSH  
DVDD  
CC1  
CC2  
GND  
VDD  
VS  
5
6
7
BLD/  
AUX  
10 GND  
CVDD  
RVSL  
CVS  
8
IMIN  
FMAX  
FAN602  
Figure 2 FAN6292MX Typical Application Schematic  
www.onsemi.com  
2
FAN6292BMX/FAN6292MX  
VIN  
LGATE  
BLD / AUX  
Internal Bias (VDD)  
CC1  
CC2  
Type-C  
Detection  
Undershoot  
Detection  
VIN-ON / VIN-OFF  
VLPC-EN  
Calculate  
VLPC-EN  
Green Mode  
GATE  
Driver  
S
R
Q
PWM  
Block  
LPC  
VLPC-TH  
VCT  
RESET  
Line  
Detection  
Function  
Enable  
iCHR  
CT  
iDISCHR  
VIN  
RatioLPC  
(1µA/V)  
RatioRES  
(0.445µA/V)  
GND  
GATE  
Figure 3 FAN6292BMX/FAN6292MX Function Block Diagram  
www.onsemi.com  
3
FAN6292BMX/FAN6292MX  
PIN FUNCTION DESCRIPTION  
Pin No.  
Pin Name  
Description  
Configuration Channel 2. This pin is used to detect connections of Type-C  
cables and connectors. It is tied to the USB Type-C CC2.  
1
CC2  
Bleeder and AUX function. Discharging path of output capacitor when UFP  
detachment is acknowledged. In addition, information is delivered to primary to  
enhance output performance.  
BLD  
/ AUX  
2
3
4
LGATE  
VIN  
Load Switch Gate. This pin is tied to the gate of the load switch  
Input Voltage. This pin is tied to the output of the adaptor to monitor its output  
voltage and supply internal bias. IC operating current, and MOSFET gate drive current  
are supplied through this pin.  
5
6
7
8
GATE  
LPC  
Gate Drive Output. Totem-pole output to drive the external SR MOSFET.  
SR MOSFET Drain Voltage Detection. This pin is used to detect the voltage  
on the secondary winding during the on time period of the primary MOSFET.  
GND  
CC1  
Ground.  
Configuration Channel 1. This pin is used to detect connections of Type-C  
cables and connectors. It is tied to the USB Type-C CC1.  
www.onsemi.com  
4
FAN6292BMX/FAN6292MX  
MAXIMUM RATINGS (Note 1,2,3)  
Rating  
Symbol  
Value  
Unit  
VIN Pin Input Voltage  
VIN  
VBLD/AUX  
VLGATE  
VCC1  
VCC2  
VLPC  
VGATE  
PD  
20  
20  
V
V
BLD/AUX Pin Input Voltage  
LGATE Pin Input Voltage  
20  
V
CC1 Pin Input Voltage  
-0.3 to 6.0  
-0.3 to 6.0  
-0.3 to 6.5  
-0.3 to 6.0  
850  
V
CC2 Pin Input Voltage  
V
LPC pin input voltage  
V
GATE pin input voltage  
V
mW  
Power Dissipation (TA=25C)  
Operating Junction Temperature  
Storage Temperature Range  
Lead Temperature, (Soldering,10 Seconds)  
Human Body Model, ANSI/ESDA/JEDEC JS-001-2012 (Note 4)  
Charged Device Model, JESD22-C101 (Note 4)  
TJ  
-40 to 150  
-40 to 150  
260  
C  
C  
C  
kV  
kV  
TSTG  
TL  
ESDHBM  
ESDCDM  
4
1.75  
1. Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device  
functionality should not be assumed, damage may occur and reliability may be affected.  
2. All voltage values, except differential voltages, are given with respect to the GND pin.  
3. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.  
4. Meets JEDEC standards JS-001-2012 and JESD 22-C101.  
THERMAL CHARACTERISTICS (Note 5)  
Rating  
Symbol  
Value  
Unit  
Thermal Characteristics,  
RθJA  
RψJT  
153  
22  
Thermal Resistance, Junction-to-Air  
Thermal Reference, Junction-to-Top  
°C/W  
5. TA=25°C unless otherwise specified.  
RECOMMENDED OPERATING RANGES (Note 6)  
Rating  
Symbol  
Min  
0
Max  
6
Unit  
V
VIN Pin Input Voltage  
BLD/AUX Pin Input Voltage  
LGATE Pin Input Voltage  
CC1 Pin Input Voltage  
CC2 Pin Input Voltage  
LPC pin input voltage  
GATE pin input voltage  
VIN  
VBLD/AUX  
VLGATE  
VCC1  
0
6
V
0
10  
5.8  
5.8  
5
V
0
V
0
V
VCC2  
0
V
VLPC  
0
5.5  
V
VGATE  
6. Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses  
beyond the Recommended Operating Ranges limits may affect device reliability.  
www.onsemi.com  
5
 
 
 
 
 
 
FAN6292BMX/FAN6292MX  
ELECTRICAL CHARACTERISTICS  
VIN=5 V, LPC=1.5 V, LPC width=2 µs at TJ= -40~125 C, FLPC=100 kHz, unless otherwise specified.  
Parameter  
Test Conditions  
Symbol  
Min  
Typ  
Max  
Unit  
VIN Section  
Continuous Operating Voltage(7)  
Operating Supply Current  
VIN-OP  
6
V
VIN=5 V  
VIN=5 V, with SR gate  
Green Mode Operating Supply Current F = 400Hz  
CC1/CC2 open circuit  
IIN-OP-5V  
8
mA  
IIN-OP-Green  
0.5  
0.9  
1.3  
mA  
Internal Bias Section  
Turn-On Threshold Voltage  
VIN increases  
VIN decreases  
VIN-ON  
3.0  
3.2  
3.4  
V
V
Turn-Off Threshold Voltage  
VIN-OFF  
2.75  
2.85  
2.95  
Green Mode Section (FAN6292BMX)  
Non-switching time, when  
LPC falling  
tGreen-EN-  
Debounce  
Green Mode Enable Debounce Time  
54  
54  
64  
1
74  
74  
µs  
Number of switching to enter green  
mode  
When switching period > TGreen-EN-  
Debounce  
NGreen-EN-  
Debounce  
Cycle  
Enable after enter green mode,  
Non-switching time, when LPC  
falling  
tGreen-DIS-  
Debounce  
Green Mode Disable Debounce Time  
64  
µs  
Green Mode Section (FAN6292MX)  
Non-switching time, when when  
LPC falling  
tGreen-EN-  
Debounce  
Green Mode Enable Debounce Time  
0.4  
0.2  
0.5  
0.3  
0.6  
0.4  
ms  
ms  
Enable after enter green mode,  
Non-switching time, when LPC  
falling  
tGreen-DIS-  
Debounce  
Green Mode Disable Debounce Time  
Number of consecutive switching to  
leave green mode  
Independently enable with TGreen-DIS- NGreen-DIS-  
256  
Cycles  
Debounce, when LPC falling  
Debounce  
Bleeder Section  
BLD Pin Sink Current through when  
bleeding (7)  
VBLD=5 V  
IBLD -Sink  
tBLD-MAX  
90  
mA  
ms  
Maximum Discharging Time when  
bleeding  
275  
320  
4.8  
365  
4.9  
AUX Section ( FAN6292BMX )  
Output undershoot detection threshold  
voltage  
4.7  
V
VIN-AUX  
TAUX-  
(7)  
μs  
μs  
Internal debounce time to enable IAUX  
RC filter type  
5
Debounce  
TAUX-ON  
BLD/AUX pin pull-down time  
44  
64  
84  
15  
BLD/AUX pin pull down current with  
VAUX=5V  
VBLD=5 V, RBLD=0 Ω  
3.3  
mA  
IAUX  
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6
FAN6292BMX/FAN6292MX  
ELECTRICAL CHARACTERISTICS  
VIN=5 V, LPC=1.5 V, LPC width=2 µs at TJ= -40~125 C, FLPC=100 kHz, unless otherwise specified.  
Parameter  
Test Conditions  
Symbol  
Min  
Typ  
Max  
Unit  
Type-C Section  
Source current on CC1 pin  
Source current on CC2 pin  
Input impedance on CC1 pin  
Input impedance on CC2 pin  
VIN=5 V, VCC2=0 V  
IP-CC1  
IP-CC2  
ZOPEN-CC1  
ZOPEN-CC2  
304  
304  
126  
126  
330  
330  
356  
356  
µA  
µA  
kΩ  
kΩ  
VIN=5 V, VCC1=0 V  
Ra impedance detection threshold on  
CC1 pin  
VIN=5 V, VCC2=0 V, Decreasing VCC1  
VIN=5 V, VCC1=0 V, Decreasing VCC2  
VIN=5 V, VCC2=0 V, Increasing VCC1  
VIN=5 V, VCC1=0 V, Increasing VCC2  
VIN=5 V, VCC2=0 V, Increasing VCC1  
VRA-CC1  
VRA-CC2  
VRD-CC1  
VRD-CC2  
0.75  
0.75  
2.45  
2.45  
100  
10  
0.80  
0.80  
2.60  
2.60  
150  
15  
0.85  
0.85  
2.75  
2.75  
200  
20  
V
V
Ra impedance detection threshold on  
CC2 pin  
Rd impedance detection threshold on  
CC1 pin  
V
Rd impedance detection threshold on  
CC2 pin  
V
tCC-Attach-  
debounce  
UFP attachment debounce time  
UFP detachment debounce time  
ms  
ms  
tCC-Detach-  
debounce  
VIN=5 V, VCC2=0 V, Decreasing VCC1  
VIN=5 V, VCC2=0 V, Increasing VCC1  
After tCC-attach-debounce until VBUS=5 V(7)  
After detaching UFP until VBUS=0 V(7)  
tVBUS-ON  
275  
650  
10  
ms  
ms  
V
VIN=5 V, VCC2=0 V, Decreasing VCC1 tVBUS-OFF  
Gate high voltage  
VIN=5 V  
VNGATE  
8
Output Driver Section  
Output Voltage Low  
Output Voltage High  
VIN=5 V, IGATE=100 mA  
VIN=5 V  
VOL  
VOH  
0.16  
0.25  
35  
V
V
4.5  
VIN=5 V, CL=3300 pF,  
GATE=1 V ~ 4 V  
Rising Time(7)  
Falling Time(7)  
tR  
20  
9
ns  
ns  
ns  
ns  
µs  
VIN=5 V, CL=3300 pF,  
GATE=4 V~ 1 V  
tF  
Propagation Delay to OUT High (LPC  
trigger)  
VIN=5 V, GATE=1 V  
VIN=5 V, GATE=4 V  
tPD-HIGH-LPC  
tPD-LOW-LPC  
tINHIBIT  
44  
30  
1.4  
80  
Propagation Delay to OUT Low (LPC  
trigger)(7)  
Gate inhibit Time(7)  
Gate start-up disable time  
Gate start-up disable time  
For FAN602 (FAN6292MX)  
tSR-startup-dis  
tSR-startup-dis  
60  
2
ms  
ms  
For FAN105B (FAN6292BMX)  
1.5  
2.5  
www.onsemi.com  
7
FAN6292BMX/FAN6292MX  
ELECTRICAL CHARACTERISTICS  
VIN=5 V, LPC=1.5 V, LPC width=2 µs at TJ= -40~125 C, FLPC=100 kHz, unless otherwise specified.  
Parameter  
Test Conditions  
Symbol  
Min  
Typ  
Max  
Unit  
Internal RES section  
Internal RES ratio  
VIN=5 V, Turn-ratio=15~17  
KRES  
0.196 0.200 0.204  
V/V  
%
VIN Dropping Protection Ratio with Two LPC width=5 µs  
Cycle  
KVIN-DROP  
70  
90  
VIN=5 V to 3.5 V  
Debounce time for disable SR when VIN  
dropping protection  
tSR_OFF  
3.5  
1
5.5  
2
7.5  
3
ms  
µs  
Debounce time for noise immunity on  
VIN(7)  
tVIN-Debounce  
LPC Section  
Linear Operation Range of LPC Pin  
VIN -OFF < VIN ≤ 5V  
VLPC  
0.4  
VIN -1  
V
nA  
V
Voltage(7)  
LPC Sink Current  
VLPC=1V  
ILPC-SINK  
100  
SR Enabled Threshold Voltage @High  
Line  
VLPC-HIGH-H 1.418 1.500 1.583  
VLPC-TH-H 1.205 1.313 1.424  
Threshold Voltage on LPC Rising Edge  
@High Line(7)  
VLPC-HIGH-H *0.875 = VLPC-TH-H  
V
V
SR Enabled Threshold Voltage @ Low  
Line  
VLPC-HIGH-L-5V = VLPC-TH-L-5V / 0.875 VLPC-HIGH-L-5V 0.703 0.743 0.783  
Spec.=0.4+0.05*VIN  
Threshold Voltage on LPC Rising Edge  
@ Low Line(7)  
VLPC-TH-L-5V  
0.63  
0.650  
0.67  
V
VIN = 5V  
Falling Edge Threshold Voltage to trigger  
SR (7)  
VLPC-TH-TRIG  
VIN = 5V, Spec.=(0.8+0.03*VIN)*2 VLINE-H-5V  
70  
1.90  
1.80  
mV  
V
Low to High Line Threshold Voltage on  
LPC pin  
1.81  
1.72  
1.99  
1.88  
High to Low Line Threshold Voltage on VIN = 5V,  
LPC pin  
VLINE-L-5V  
V
Spec.=(0.75+0.03*VIN)*2  
Line Change Threshold Hysteresis  
Higher Clamp Voltage  
VLINE-HYS-5V = VLINE-H-5V - VLINE-L-5V  
VLINE-HYS-5V  
VLPC-CLAMP-H  
0.1  
6.2  
V
V
5.4  
7.0  
VIN = 5V  
LPC Threshold Voltage to Disable SR  
Gate Switching  
VLPC-DIS  
VIN - 0.6  
V
LPC=3V↑  
Enable VLPC-DIS  
Disable VLPC-DIS  
Increasing VIN  
Decreasing VIN  
VEN-LPC-DIS  
VDIS-LPC-DIS  
4.25  
4.1  
4.4  
4.2  
4.45  
4.3  
V
V
Counts for  
Line Change Debounce from Low Line to  
High Line(7)  
tLPC-LH-debounce  
7
cycles  
µs  
LPC falling < VLPC-TH-L-5V  
Line Change Debounce from High Line  
to Low Line(7)  
tLPC-HL-debounce  
15  
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8
FAN6292BMX/FAN6292MX  
ELECTRICAL CHARACTERISTICS  
VIN=5 V, LPC=1.5 V, LPC width=2 µs at TJ= -40~125 C, FLPC=100 kHz, unless otherwise specified  
Parameter  
Internal Timing Section  
LPC Transfer Ratio to ILPC  
Test Conditions  
Symbol  
Min  
Typ  
Max  
Unit  
(7)  
(7)  
RatioLPC  
RatioRES  
1
A/V  
A/V  
VRES Transfer Ratio to IRES  
0.445  
VIN=5V, FLPC=50 kHz,  
KRES=0.20  
Ratio between VLPC & VRES  
RatioLPC-RES 3.15  
3.37  
180  
3.59  
280  
Minimum LPC Time to Enable the SR  
Gate @ High Line  
VLPC=3V  
tLPC-EN-H  
tLPC-EN-L  
80  
ns  
ns  
Minimum LPC Time to Enable the SR  
Gate @ Low Line  
VLPC=1.5V  
500  
600  
2.2  
700  
2.5  
Minimum Gate Width  
Max SR On Time(7)  
FAN6292BMX  
tMIN  
1.9  
20  
µs  
µs  
tON-MAX  
ton-SR(n+1)- ton-SR(n) < tgate-limit  
tgate-limit  
350  
500  
650  
ns  
Maximum Gate Limit On-time)(7)  
Forced internal CT reset time(7)  
Reverse Current Mode Section  
tgate-limit-max  
tCT-RESET  
5
µs  
ns  
10  
Reverse current mode entry debounce  
time  
Treverse-  
debounce  
VIN=5 V, VLPC=0 V  
VIN=5 V, VLPC=0 V  
VIN=5 V, VLPC=0 V  
VIN=5 V, VLPC=0 V  
VIN=5 V, VLPC=0 V  
350  
500  
650  
1.7  
10  
ms  
mA  
μA  
μA  
uA  
Operating current during reverse  
current mode  
IOP.reverse  
IP-CC1.reverse  
IP-CC2.reverse  
IBLD.reverse  
Source current on CC1 pin during  
reverse current mode(7)  
Source current on CC2 pin during  
reverse current mode(7)  
10  
AUX pin current during reverse current  
mode(7)  
10  
7. Guaranteed by Design.  
8. Guaranteed at -5° ~ 85°C.  
www.onsemi.com  
9
FAN6292BMX/FAN6292MX  
T
Y
P
I
C
A
L
C
H
A
R
A
C
T
E
R
I
S
T
I
C
S
F i g u r e  
( V  
4
T u r n - O n T h r e s h o l d V o l t a g e  
) v s . T e m p e r a t u r e  
O N  
F i g u r e 5 T u r n - O f f T h r e s h o l d V o l t a g e  
( V v s . T e m p e r a t u r e  
I
N
-
)
N - O F F  
I
Figure 6 Minimum LPC Time to Enable the SR  
Gate @ Low -Line (t L P C - E N - L ) vs. Temperatur e  
F i g u r e 7 V I N U n d e r - V o l t a g e - P r o t e c t i o n  
E n a b l e ( V v s . T e m p e r a t u r e  
)
I N - A U X  
F i g u r e 9 R a t i o b e t w e e n V L P C & V R E S  
( R a t i o v s . T e m p e r a t u r e  
Figure 8 Minimum LPC Time to Enable the SR  
Gate @ High-Line (tL P C - E N - H ) vs. Temperature  
)
P C - R E S  
L
www.onsemi.com  
10  
FAN6292BMX/FAN6292MX  
T
Y
P
I
C
A
L
C
H
A
R
A
C
T
E
R
I
S
T
I
C
S
F i g u r e 1 0 S o u r c e C u r r e n t o n C C 1 P i n  
( I v s . T e m p e r a t u r e  
F i g u r e 1 1 S o u r c e C u r r e n t o n C C 2 P i n  
( I v s . T e m p e r a t u r e  
)
C 1  
P
-
C
)
- C C 2  
P
Figure 12 Operating Current during Reverse Current  
M o d e ( I v s . T e m p e r a t u r e  
F i g u r e 1 3 G a t e H i g h V o l t a g e  
( V v s . T e m p e r a t u r e  
)
O P . r e v e r s e  
)
G A T E  
N
www.onsemi.com  
11  
FAN6292BMX/FAN6292MX  
APPLICATIONS INFORMATION  
N-channel MOSFET for Load Switch  
VO _ MAX  
(1)  
FAN6292BMX/FAN6292MX implement Type-C block  
to enable or disable an external load switch. Internally  
adapted charge pump lets it control N-channel MOSFET  
as a load switch. It helps system be more cost  
competitive compared to P-channel MOSFET as a load  
switch. Since the minimum pumped voltage is VBUS+3 V,  
it is recommended to use N-channel MOSFET  
IBLDRType  
RBLD RInternal  
VIN-UVP Protection(for FAN6292BMX)  
Since pure primary side controller detects and regulates  
output voltage only when switching, it is not easy  
maintaining output voltage when load suddenly increases  
from light load where switching frequency is slow to  
heavy load.Therefore, as Figure 15, FAN6292BMX  
automatically detects output voltage. When output  
undershoot is acknowledged via VIN pin, BLD/AUX pin  
pull-down current via S2 switch to inform undershoot  
status to primary controller via a photo-coupler. Since  
the pull-down current is limited through S2, the current  
will not affect to the amount of output current.  
supporting lower gate threshold levels.  
Detail of Load Switch Control  
FAN6292BMX/FAN6292MX support output current  
higher than 1.5 A. In order to meet Type-C specification,  
330 μA is applied on CC1 pin and CC2 pin. When Rd  
(5.1 k) is attached on either CC1 or CC2, load switch is  
turned-on after 150 ms debounce time. As soon as load  
switch is enabled, BC1.2 counter is enabled. To  
acknowledge detachment, it needs 15 ms (typ.) debounce  
time. When load switch is turned-off, bleeder is also  
enabled at the same time.  
Load Switch  
VBUS  
NP  
NS  
Co1  
LGATE  
Co2  
RLPC1  
SR  
Gate  
Opto-  
coupler  
LPC  
RLPC2  
Green Mode Operation (for FAN6292BMX)  
RBLD  
(100Ω)  
In order to reduce power consumption at light-load  
conditions with FAN105B system, FAN6292BMX in  
green mode will disable LPC internal detection block but  
SR contiously works at mini on time for FAN105B  
which is a pure primary side controller to normally  
regulate output voltage. When VLPC is smaller than VLPC-  
HIGH-L-5V and maintains duration longer than tGreen-EN-  
Debounce, FAN6292MX enters green mode where current  
can be reduced to 0.9 mA (typ.). It leaves green mode  
when VLPC is larger than VLPC-HIGH-L-5V and maintains  
AUX  
CFUNC  
FAN105B  
FAN6292  
BLD / AUX  
VIN  
CC1  
CC2  
S1  
TypeC  
deteachment  
detection  
VIN-AUX  
S2  
duration shorter than tGreen-DIS-Debounce  
.
Figure 14 BLD/AUX Function Diagram  
Green Mode Operation(for FAN6292MX)  
In order to reduce power consumption at light-load  
conditions with FAN602 system, FAN6292MX enters  
the green mode where some internal blocks are disabled  
such as Synchronous Rectifier control block. Therefore,  
the operating current can be largely reduced. It enters  
Green Mode when VLPC is smaller than VLPC-HIGH-L-5V  
and maintains duration longer than tGreen-EN-Debounce. It  
leaves green mode when VLPC is larger than VLPC-HIGH-L-  
Load  
Heavy load  
t
t
Pri-PWM  
VIN  
5V and maintains duration shorter than tGreen-DIS-Debounce  
.
VIN-AUX  
Bleeder Function  
When the portable device is detached, BUS voltage  
t
t
S2  
tAUX-Debounce  
tAUX-ON  
should be discharged to zero within a short time to meet  
TypeC specification. FAN6292BMX/ FAN6292MX  
support bleeding function by turning on S1 for TBLD-max  
as shown in Figure 14. The amount of bleeding current  
through BLD/AUX pin can be controlled by the external  
resistor RBLD shown in (1).  
Figure 15 VIN-UVP Protection  
www.onsemi.com  
12  
 
 
 
FAN6292BMX/FAN6292MX  
ORDERING INFORMATION  
Operating  
Temperature Range  
Part Number  
Package  
Packing Method  
8-Lead, Small Outline Package (SOIC), JEDEC  
MS-012, .150-Inch Narrow Body  
FAN6292BMX  
FAN6292MX  
Tape & Reel  
Tape & Reel  
-40C to +125C  
8-Lead, Small Outline Package (SOIC), JEDEC  
MS-012, .150-Inch Narrow Body  
-40C to +125C  
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging  
Specifications Brochure, BRD8011/D  
www.onsemi.com  
13  
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