IR1169STRPBF [INFINEON]

ADVANCED SMARTRECTIFIER CONTROL IC; 高级智能整流控制IC
IR1169STRPBF
型号: IR1169STRPBF
厂家: Infineon    Infineon
描述:

ADVANCED SMARTRECTIFIER CONTROL IC
高级智能整流控制IC

文件: 总27页 (文件大小:355K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
IR1169S  
ADVANCED SMARTRECTIFIERTM CONTROL IC  
Product Summary  
Features  
Secondary side high speed SR controller  
Flyback, Forward, Half-  
Topology  
Bridge  
Flyback, Forward and Half-bridge topologies  
CCM operation with SYNC function  
200V proprietary IC technology  
Max 500KHz switching frequency  
Anti-bounce logic and UVLO protection  
4A peak turn off drive current  
Micropower start-up & low quiescent current  
10.7V gate drive clamp  
50ns turn-off propagation delay  
Vcc range from 11V to 20V  
VD  
200V  
VOUT  
10.7V  
Io+ & I o- (typical)  
+1A & -4A  
Turn on Propagation  
Delay  
70ns (typical)  
50ns (typical)  
Turn off Propagation  
Delay  
Enable function synchronized with MOSFET VDS  
transition  
Cycle by Cycle MOT Check Circuit prevents multiple  
false trigger GATE pulses  
Package Options  
Lead-free  
Compatible with 0.3W Standby, Energy Star, CECP,  
etc.  
Typical Applications  
8-Lead SOIC  
Telecom SMPS, ATX SMPS, Server SMPS, AC-DC  
adapters  
Ordering Information  
Standard Pack  
Base Part Number  
Package Type  
Complete Part Number  
Form  
Quantity  
Tube/Bulk  
95  
IR1169SPBF  
SOIC8N  
IR1169S  
Tape and Reel  
2500  
IR1169STRPBF  
1
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Typical Connection Diagram  
L
Vin  
VOUT  
RCC  
CVCC  
vcc  
Rg  
QFWL  
VCC  
1
SYNC  
2
GATE  
8
GND  
7
Cin  
MOT  
3
VS  
6
Cout  
EN  
4
VD  
5
IR1169  
Rmot  
Rtn  
Primary  
Controller  
2
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Table of Contents  
Ordering Information  
Page  
1
Description  
4
Absolute Maximum Ratings  
Electrical Characteristics  
Functional Block Diagram  
Input/Output Pin Equivalent Circuit Diagram  
Lead Definitions  
5
6
8
9
10  
10  
11  
12  
24  
25  
26  
27  
Lead Assignments  
Detailed Pin Description  
Application Information and Additional Details  
Package Details  
Tape and Reel Details  
Part Marking Information  
Qualification Information  
3
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Description  
IR1169 is a smart secondary-side driver IC designed to drive N-Channel power MOSFETs used as synchronous  
rectifiers in isolated Flyback, Forward or Half-bridge converters. The IC can control one or more paralleled N-  
MOSFETs to emulate the behavior of Schottky diode rectifiers. IR1169 works in both DCM and CCM operation  
modes. The SYNC pin should be used in CCM mode to directly turn-off the MOSFET by a signal from secondary  
or primary controller. The IC is designed to use simple capacitor coupling interface to communicate with primary  
controller. In addition to the SYNC control, the drain to source voltage is sensed differentially to determine the  
polarity of the current and turn the power switch on and off in proximity of the zero current transition. Ruggedness  
and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression which  
allow reliable operation in all operating modes.  
4
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Absolute Maximum Ratings  
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage  
parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal  
resistance and power dissipation ratings are measured under board mounted and still air conditions.  
Parameters  
Supply Voltage  
Enable Voltage  
Cont. SYNC Voltage  
Pulse SYNC Voltage  
SYNC Current  
Cont. Drain Sense Voltage  
Pulse Drain Sense Voltage  
Source Sense Voltage  
Gate Voltage  
Symbol  
VCC  
VEN  
VSYNC  
VSYNC  
ISYNC  
VD  
VD  
VS  
VGATE  
TJ  
TS  
Min.  
-0.3  
-0.3  
-0.3  
-0.7  
-10  
-1  
-5  
-3  
-0.3  
-40  
-55  
Max.  
20  
20  
20  
20  
Units  
V
V
V
V
mA  
V
V
V
V
Remarks  
10  
200  
200  
20  
20  
VCC=20V, Gate off  
Operating Junction Temperature  
Storage Temperature  
Thermal Resistance  
Package Power Dissipation  
150  
150  
128  
970  
°C  
°C  
°C/W  
mW  
RθJA  
PD  
SOIC-8  
SOIC-8, TAMB=25°C  
An input resistor of 2kΩ or above is required to SYNC pin for negative pulse  
Recommended Operating Conditions  
For proper operation the device should be used within the recommended conditions.  
Symbol  
Definition  
Min.  
Max.  
Units  
VCC  
Supply voltage  
11  
19  
V
VD  
Drain Sense Voltage  
Junction Temperature  
Switching Frequency  
200  
125  
500  
-3  
-25  
---  
TJ  
Fsw  
°C  
kHz  
-3V negative spike width 100ns  
VD  
Recommended Component Values  
Symbol  
RMOT  
Component  
MOT pin resistor value  
Min.  
5
Max.  
75  
Units  
kΩ  
5
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Electrical Characteristics  
VCC=15V and TA = 25°C unless otherwise specified. The output voltage and current (VO and IO) parameters are  
referenced to GND (pin7).  
Supply Section  
Parameters  
Symbol Min.  
Typ.  
Max.  
Units  
Remarks  
VCC Turn On Threshold  
VCC Turn Off Threshold  
(Under Voltage Lock Out)  
VCC ON  
9.4  
10.4  
11.0  
V
VCC UVLO  
8.6  
9.3  
10.0  
V
VCC Turn On/Off Hysteresis VCC HYST  
1.1  
8.5  
45  
V
CLOAD=1nF,fSW=400kHz  
CLOAD=10nF,fSW=400kHz  
SYNC=low  
10  
55  
mA  
mA  
mA  
Operating Current  
ICC  
Quiescent Current  
Start-up Current  
IQCC  
ICC START  
I SLEEP  
VENHI  
1.8  
100  
150  
2.8  
1.6  
1.5  
2.3  
200  
200  
3.3  
2.0  
µA VCC=VCC ON - 0.1V  
Sleep Current  
µA VEN=0V, VCC =15V  
V
V
Enable Voltage High  
Enable Voltage Low  
Enable Pull-up Resistance  
2.25  
1.2  
VENLO  
REN  
MΩ  
GBD  
Comparator Section  
Parameters  
Turn-off Threshold  
Turn-on Threshold  
Hysteresis  
Symbol Min.  
Typ.  
-3.5  
-230  
230  
1
Max.  
0
Units  
mV  
mV  
mV  
µA  
Remarks  
VTH1  
VTH2  
-7  
-263  
-197  
VHYST  
IIBIAS1  
IIBIAS2  
VD = -50mV  
VD = 200V  
Input Bias Current  
Input Bias Current  
7.5  
10  
100  
µA  
VCM  
Input CM Voltage Range  
0
2
V
One-Shot Section  
Parameters  
Blanking pulse duration  
Symbol Min.  
tBLANK  
Typ.  
17  
Max.  
25  
Units  
µs  
Remarks  
9
2.5  
5.4  
40  
V
V
VCC=10V – GBD  
VCC=20V – GBD  
Reset Threshold  
Hysteresis  
VTH3  
mV VCC=10V – GBD  
VHYST3  
Minimum On Time Section  
Parameters  
Symbol Min.  
Typ.  
240  
3
Max.  
300  
3.6  
Units  
ns  
Remarks  
180  
TOnmin  
RMOT =5kΩ, VCC=12V  
RMOT =75kΩ, VCC=12V  
Minimum on time  
2.4  
µs  
6
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Electrical Characteristics  
VCC=15V and TA = 25°C unless otherwise specified. The output voltage and current (VO and IO) parameters are  
referenced to GND (pin7).  
SYNC Section  
Parameters  
SYNC Voltage High (disable) VSYHI  
SYNC Voltage Low (enable)  
SYNC Turn-on Prop. Delay  
SYNC Turn-off Prop. Delay  
Minimum SYNC pulse width  
Symbol Min.  
Typ.  
2.5  
0.8  
Max.  
3.0  
1.0  
Units  
V
V
Remarks  
2.0  
0.6  
VSYLO  
TSyon  
TSyoff  
TSYPW  
SYNC =high to low  
65  
55  
100  
90  
ns  
ns  
ns  
SYNC=low to high  
GBD  
50  
Gate Driver Section  
Parameters  
Symbol Min.  
Typ.  
Max.  
Units  
Remarks  
Gate Low Voltage  
VGLO  
0.24  
0.5  
V
IGATE = 200mA  
VCC=12V-18V  
Gate High Voltage  
Rise Time  
VGTH  
tr1  
tr2  
tf1  
tf2  
9.0  
10.7  
20  
180  
10  
14  
V
(internally clamped)  
ns  
ns  
ns  
ns  
CLOAD = 1nF, VCC=12V  
CLOAD = 10nF, VCC=12V  
CLOAD = 1nF, VCC=12V  
CLOAD =10nF, VCC=12V  
VDS to VGATE –VDS goes down  
from 6V to -1V  
VDS to VGATE –VDS goes up from  
-1V to 6V  
IGATE = 200mA – GBD  
IGATE = -200mA  
Fall Time  
44  
Turn on Propagation Delay  
tDon  
70  
95  
75  
ns  
Turn off Propagation Delay  
Pull up Resistance  
Pull down Resistance  
Output Peak Current(source) IO source  
Output Peak Current (sink) IO sink  
tDoff  
rup  
rdown  
50  
5
1.2  
1
ns  
A
CLOAD = 10nF – GBD  
CLOAD = 10nF – GBD  
4
A
7
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Functional Block Diagram  
MOT  
VCC  
VCC  
UVLO  
&
EN  
REGULATOR  
Cycle by Cycle  
MOT Check  
Circuit  
VCC  
VD  
Min ON Time  
RESET  
VTH1  
VTH2  
RESET  
VGATE  
GND  
VS  
DRIVER  
Min OFF Time  
RESET  
RESET  
VTH3  
SYNC  
8
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IR1169S  
I/O Pin Equivalent Circuit Diagram  
VCC  
SYNC  
GND  
VCC  
ESD  
Diode  
ESD  
Diode  
MOT/  
or EN  
RESD  
ESD  
Diode  
ESD  
Diode  
GND  
VCC  
VD  
RESD  
ESD  
Diode  
ESD  
Diode  
GATE  
ESD  
200V  
Diode  
Diode  
GND  
GND  
9
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© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Lead Definitions  
PIN#  
Symbol  
VCC  
SYNC  
MOT  
EN  
Description  
1
2
3
4
5
6
7
8
Supply Voltage  
SYNC Input for direct turn off  
Minimum On Time  
Enable  
FET Drain Sensing  
FET Source Sensing  
Ground  
VD  
VS  
GND  
VGATE  
Gate Drive Output  
Lead Assignments  
1
2
3
4
VCC  
SYNC  
MOT  
EN  
8
7
6
5
VGATE  
GND  
VS  
VD  
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IR1169S  
Detailed Pin Description  
VCC: Power Supply  
This is the supply voltage pin of the IC and it is monitored by the under voltage lockout circuit. It is possible to turn  
off the IC by pulling this pin below the minimum turn off threshold voltage, without damage to the IC.  
To prevent noise problems, a bypass ceramic capacitor connected to Vcc and COM should be placed as close as  
possible to the IR1169. This pin is internally clamped.  
SYNC: Direct Turn-off and Reset  
SYNC is used to directly turn-off the SR MOSFET by an external signal. The gate output of IR1169 is low when  
SYNC voltage is higher than VSYHI threshold. The propagation delay from SYNC goes high to gate turns off is  
55ns. The turn-off of SYNC is a direct control and it ignores the MOT time (override).  
The SYNC pin will reset MOT and Blanking time when SYNC switches from low to high. It will reset MOT timer  
and Blanking timer only at the rising edge of signal. This function is useful for very low output voltage condition  
(such as overload or short circuit) where the VD voltage is too low to reach Vth3 threshold to reset the timers.  
SYNC pin also can be used to control the turn-on time of SR MOSFET (adding additional delay time at turn-on for  
noise immunity).  
If not used, SYNC pin should be connected to GND.  
MOT: Minimum On Time  
The MOT programming pin controls the amount of minimum on time. When VSYNC is low and VTH2 is crossed, the  
gate signal will become active and turn on the power FET. Spurious ringings and oscillations can trigger the input  
comparator off. The MOT blanks the input comparator keeping the FET on for a minimum time.  
The MOT is programmed between 200ns and 3us (typ.) by using a resistor referenced to COM.  
EN: Enable  
This pin is used to activate the IC “sleep” mode by pulling the voltage level below 1.6V (typ). In sleep mode the IC  
will consume a minimum amount of current. All switching functions will be disabled and the gate will be inactive.  
VD: Drain Voltage Sense  
VD is the voltage sense pin for the power MOSFET Drain. This is a high voltage pin and particular care must be  
taken in properly routing the connection to the power MOSFET drain.  
VS: Source Voltage Sense  
VS is the differential sense pin for the power MOSFET Source. This pin should be connected directly to the power  
ground pin (7) but must be used to create a kelvin contact as close as possible to the power MOSFET source pin.  
GND: Ground  
This is ground potential pin of the integrated control circuit. The internal devices and gate driver are referenced to  
this point.  
VGATE: Gate Drive Output  
This is the gate drive output of the IC. Drive voltage is internally limited and provides 1A peak source and 4A peak  
sink capability. Although this pin can be directly connected to the power MOSFET gate, the use of minimal gate  
resistor is recommended, especially when putting multiple FETs in parallel.  
Care must be taken in order to keep the gate loop as short and as small as possible in order to achieve optimal  
switching performance.  
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IR1169S  
Application Information and Additional Details  
State Diagram  
POWER ON  
Gate Inactive  
UVLO MODE  
VCC < VCCon  
Gate Inactive  
ICC max = 200uA  
VCC > VCCon,  
ENABLE HIGH  
VCC < VCCuvlo  
or  
ENABLE LOW  
NORMAL  
Gate Active  
Gate PW MOT  
Cycle by Cycle MOT Check Enabled  
SYNC Enabled  
VDS>VTH1 @ MOT  
VDS<VTH1 @ MOT  
MOT PROTECTION  
MODE  
Gate Output Disabled  
UVLO/Sleep Mode  
The IC remains in the UVLO condition until the voltage on the VCC pin exceeds the VCC turn on threshold  
voltage, VCC ON. During the time the IC remains in the UVLO state, the gate drive circuit is inactive and the IC  
draws a quiescent current of ICC START. The UVLO mode is accessible from any other state of operation  
whenever the IC supply voltage condition of VCC < VCC UVLO occurs.  
The sleep mode is initiated by pulling the EN pin below 1.6V (typ). In this mode the IC is essentially shut  
down and draws a very low quiescent supply current.  
Normal Mode and Synchronized Enable Function  
The IC enters in normal operating mode once the UVLO voltage has been exceeded and EN voltage is above  
VENHI threshold. When the IC enters Normal Mode from UVLO Mode, the GATE output is disabled (stays low)  
until VDS exceeds VTH3 to activate the gate. This ensures that the GATE output is not enabled in the middle of  
a switching cycle. This logic prevents any reverse currents across the device due to minimum on time function  
in the IC. The gate will continuously drive the SR MOSFET after this one-time activation. The Cycle by Cycle  
MOT protection circuit is enabled in Normal Mode.  
MOT Protection Mode  
If the secondary current conduction time is shorter than the MOT (Minimum On Time) setting, the next driver  
output is disabled. This function can avoid reverse current that occurs when the system works at very low  
duty-cycles or at very light/no load conditions and reduce system standby power consumption by disabling  
GATE outputs. The Cycle by Cycle MOT Check circuit is always activated under Normal Mode and MOT  
Protection Mode, so that the IC can automatically resume normal operation once the load increases to a level  
and the secondary current conduction time is longer than MOT.  
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IR1169S  
General Description  
The IR1169 Smart Rectifier IC can emulate the operation of diode rectifier by properly driving a Synchronous  
Rectifier (SR) MOSFET. The direction of the rectified current is sensed by the input comparator using the power  
MOSFET RDson as a shunt resistance and the GATE pin of the MOSFET is driven accordingly. Internal blanking  
logic is used to prevent spurious transitions. The Synchronous pin (SYNC) can directly take the signal sent from  
primary controller to turn off the gate of SR MOSFET prior to the turn-on of primary MOSFET therefore prevent  
negative current in SR circuit under CCM condition.  
IR1169 is suitable for Flyback, Forward and Resonant Half-Bridge topologies.  
VGate  
VDS  
VTH2  
VTH1  
VTH3  
Figure 1: Input comparator thresholds  
Flyback Application  
The modes of operation for a Flyback circuit differ mainly for the turn-off phase of the SR switch, while the turn-on  
phase of the secondary switch (which corresponds to the turn off of the primary side switch) is identical.  
Turn-on phase  
When the conduction phase of the SR FET is initiated, current will start flowing through its body diode, generating  
a negative VDS voltage across it. The body diode has generally a much higher voltage drop than the one caused by  
the MOSFET on resistance and therefore will trigger the turn-on threshold VTH2  
.
At that point, if SYNC voltage is low IR1169 will drive the gate of MOSFET on, which will in turn cause the  
conduction voltage VDS to drop down. This drop is usually accompanied by some amount of ringing, that can  
trigger the input comparator to turn off; hence, a Minimum On Time (MOT) blanking period is used that will  
maintain the power MOSFET on for a minimum amount of time.  
The programmed MOT will limit also the minimum duty cycle of the SR MOSFET and, as a consequence, the max  
duty cycle of the primary side switch.  
DCM/CrCM Turn-off phase  
Once the SR MOSFET has been turned on, it will remain on until the rectified current will decay to the level where  
VDS will cross the turn-off threshold VTH1. This will happen differently depending on the mode of operation.  
In DCM the current will cross the threshold with a relatively low dI/dt. Once the threshold is crossed, IR1169 will  
turn off gate and the current will start flowing again thru the body diode, causing the VDS voltage to jump negative.  
Depending on the amount of residual current, VDS may trigger once again the turn on threshold: for this reason  
VTH2 is blanked for a certain amount of time (TBLANK) after VTH1 has been triggered.  
The blanking time is internally set. As soon as VDS crosses the positive threshold VTH3 the blanking time is  
terminated and the IC is ready for next conduction cycle.  
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IR1169S  
ID_PRIM  
VDS_PRIM  
time  
T3  
T1  
T2  
ID_SEC  
VDS_SEC  
time  
Figure 2: Flyback primary and secondary currents and voltages for DCM mode  
ID_PRIM  
VDS_PRIM  
time  
T2  
T1  
ID_SEC  
VDS_SEC  
time  
Figure 3: Flyback primary and secondary currents and voltages for CrCM mode  
Vin  
VOUT  
RCC  
CVCC  
VCC  
1
GATE  
8
GND  
7
SYNC  
Cin  
Cout  
2
MOT  
3
VS  
6
EN  
4
VD  
5
IR1169  
Rmot  
Rg  
Rtn  
Figure 4: IR1169 schematic in DCM/CrCM mode Flyback  
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IR1169S  
VTH3  
ISEC  
VDS  
T1  
T2  
time  
VTH1  
VTH2  
TDon  
TDoff  
Gate Drive  
Blanking  
time  
MOT  
17us blanking  
Figure 5: IR1169 DCM/CrCM Sync Rect operation (with SYNC connected to COM)  
CCM Turn-off phase  
In CCM mode the turn on phase is identical to DCM or CrCM and therefore won’t be repeated here.  
The turn off transition is much steeper and dI/dt involved is much higher (Figure 6). If the SR controller wait for the  
primary switch to turn back on and turn the gate off according to the FET current crossing VTH1, it has high chance  
to get reverse current in the SR MOSFET. A predictable turn-off prior to the primary turn-on is necessary. A  
decoupling and isolation capacitor can be used to couple the primary gate signal to IR1169 SYNC pin and turn-off  
the SR MOSFET prior to the current slope goes to negative. Some turn-on delay to the primary MOSFET can  
guarantee no shoot through between the primary and secondary.  
ID_PRIM  
VDS_PRIM  
time  
T2  
T1  
ID_SEC  
VDS_SEC  
time  
Figure 6: Primary and secondary currents and voltages for CCM mode  
In CCM application the connection of IR1169 is recommended as shown in Figure 7.  
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IR1169S  
Vin  
VOUT  
RCC  
CVCC  
vcc  
VCC  
1
SYNC  
2
GATE  
8
GND  
7
Cin  
Cout  
MOT  
3
VS  
6
EN  
4
VD  
5
IR1169  
Rmot  
Rg  
Rtn  
M1  
Primary  
Controller  
Figure 7: IR1169 schematic in CCM mode Flyback  
IR1169 is designed to directly take the control information from primary side with capacitor coupling. A high  
voltage, low capacitance capacitor is used to send the primary gate driver signal to the SYNC pin. To have the  
circuit work properly, a Y cap is required between primary ground and secondary ground. No pulse transformer is  
required for the SYNC function, helps saving cost and PCB area.  
The turn-off phase with SYNC control is shown in Figure 8.  
In this case a blanking period is not applied; SYNC logic high will reset blanking time.  
ISEC  
VDS  
T1  
T2  
time  
VTH1  
VTH2  
TDon  
TSYoff  
Gate Drive  
time  
time  
MOT  
MOT  
Primary turn-on is been  
delayed to avoid shoot-through  
Primary Gate  
VSYLO  
VSYHI  
SYNC  
SYNC high, turn off the Gate &  
Reset blanking time  
SYNC low, gate is enabled  
Figure 8: Secondary side CCM operation  
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IR1169S  
Forward Application  
The typical forward schematic with IR1169 is shown in Figure 9. The operation waveform of secondary Sync Rect  
circuit in Forward is similar to the CCM operation of Flyback.  
LOAD  
Primary  
Controller  
GATE  
8
VCC  
1
VCC  
1
GATE  
8
SYNC  
2
GND  
7
SYNC  
2
GND  
7
MOT  
3
VS  
6
MOT  
3
VS  
6
EN  
4
VD  
5
EN  
4
VD  
5
Coupling Cap  
Y Cap  
Synchronous signal  
Figure 9: Forward application circuit  
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IR1169S  
Resonant Half-Bridge Application  
The typical application circuit of IR1169 in LLC half-bridge is shown in Figure 10.  
M3  
Rg1  
RCC1  
CVCC1  
Vin  
VCC  
1
SYNC  
2
GATE  
8
GND  
7
M1  
MOT  
3
VS  
6
EN  
4
VD  
5
Lr  
T1  
IR1169  
Rmot1  
Lm  
M2  
VOUT  
RCC2  
CVCC2  
Cr  
Rtn  
VCC  
1
GATE  
8
SYNC  
GND  
Cout  
2
7
MOT  
3
VS  
6
EN  
4
VD  
5
IR1169  
Rmot2  
Rg2  
M4  
Figure 10: Resonant half-bridge application circuit  
The SYNC pin can be tied to COM in LLC converter. The turn-on phase and turn-off phase is similar to Flyback  
converter except the current shape is sinusoid. The typical operation waveform can be found below.  
VTH3  
IDS  
VDS  
T1  
T2  
VTH1  
VTH2  
Gate Drive  
Blanking  
MOT  
tBLANK  
time  
Figure 11: Resonant half-bridge operation waveform (with SYNC connected to GND)  
18 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
The SYNC pin also can be connected to a control signal for special turn-on and/or turn-off control. Figure 12 is an  
example where the SYNC function is used to put some delay to the turn-on phase.  
VTH3  
IDS  
VDS  
T1  
T2  
VTH1  
VTH2  
TDoff  
TSYon  
Gate Drive  
Blanking  
SYNC  
MOT  
tBLANK  
time  
SYNC rising edge, reset MOT and Tblank  
Figure 12: Resonant half-bridge with SYNC control  
MOT Protection Mode  
The MOT protection prevents reverse current in SR MOSFET. This function works in all three topologies. Figure  
13 is an example in Flyback converter.  
VDS  
ISEC  
Gate Drive  
time  
MOT  
Sensed VD>VTH1 at  
Disable the next gate output  
the end of MOT  
Figure 13: MOT Protection Mode  
19 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
SYNC Reset Function  
The SYNC pin resets MOT and Blanking time when SYNC switches from low to high. This function is useful for  
very low output voltage condition (such as overload or short circuit) where the VD voltage is too low to reach Vth3  
threshold to reset the timers.  
VDS<Vth3  
IDS  
VTH3  
VDS  
VTH1  
VTH2  
T1  
T2  
TDoff  
TSYon  
Gate Drive  
tBLANK  
MOT  
MOT  
tBLANK  
SYNC  
time  
SYNC rising edge, reset MOT and Tblank  
Figure 14: Reset by SYNC when VD<Vth3  
General Timing Waveform  
SYNC  
VSYHI  
VSYLO  
VTH1  
VDS  
VTH2  
tDon  
tDoff  
tSYoff  
tSYon  
VGATE  
90%  
50%  
10%  
tr  
tf  
tr  
tf  
Figure 15: Timing waveform  
20 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
11 V  
10 V  
9 V  
IQCC  
2.5  
2.0  
1.5  
VCC ON  
VCC UVLO  
8 V  
-50 °C  
-50 °C  
0 °C  
50 °C  
Temperature  
100 °C  
150 °C  
0 °C  
50 °C  
100 °C  
150 °C  
Temperature  
Figure 17: Icc Quiescent Currrent vs. Temperature  
Figure 16: Undervoltage Lockout vs. Temperature  
Icc @400KHz, CLOAD=1nF  
9.0  
-2.0  
-3.0  
-4.0  
-5.0  
-6.0  
8.5  
8.0  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
Temperature  
Temperature  
Figure 18: Icc Supply Currrent @1nF Load vs.  
Temperature  
Figure 19: VTH1 vs. Temperature  
21 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
75 ns  
70 ns  
65 ns  
60 ns  
55 ns  
50 ns  
45 ns  
40 ns  
35 ns  
-150.0  
-200.0  
-250.0  
-300.0  
Turn-on Propagation Delay  
Turn-off Propagation Delay  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
Temperature  
Temperature  
Figure 21: Turn-on and Turn-off Propagation Delay  
vs. Temperature  
Figure 20: VTH2 vs. Temperature  
4 us  
3 us  
2 us  
1 us  
0 us  
3.0 V  
2.5 V  
VEN HI  
VEN LO  
2.0 V  
RMOT=75k  
RMOT=25k  
RMOT=5k  
1.5 V  
1.0 V  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
Temperature  
Temperature  
Figure 22: MOT vs Temperature  
Figure 23: Enable Threshold vs. Temperature  
22 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
3.0 V  
2.5 V  
2.0 V  
1.5 V  
1.0 V  
0.5 V  
80 ns  
75 ns  
70 ns  
65 ns  
60 ns  
55 ns  
50 ns  
45 ns  
40 ns  
35 ns  
SYNC HI  
SYNC LO  
SYNC Turn-on Delay  
SYNC Turn-off Delay  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
-50 °C  
0 °C  
50 °C  
100 °C  
150 °C  
Temperature  
Temperature  
Figure 25: SYNC Turn-on and Turn-off  
Propagation Delay vs. Temperature  
Figure 24: SYNC Thresholds vs. Temperature  
11.5 V  
11.0 V  
10.5 V  
25 ns  
20 ns  
15 ns  
10 ns  
Tr  
Tf  
5 ns  
0 ns  
VGH@Vcc=18V  
VGH@Vcc=12V  
10.0 V  
-50 °C  
-50 °C  
0 °C  
50 °C  
Temperature  
100 °C  
150 °C  
0 °C  
50 °C  
Temperature  
100 °C  
150 °C  
Figure 26: Gate Clamping Voltage vs. Temperature  
Figure 27: Rise and Fall time vs. Temperature  
23 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Package Details: SOIC8N  
24 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Tape and Reel Details: SOIC8N  
LOADED TAPE FEED DIRECTION  
A
B
H
D
F
C
NOTE : CONTROLLING  
DIMENSION IN MM  
E
G
CARRIER TAPE DIMENSION FOR 8SOICN  
Metric  
Imperial  
Min  
0.311  
0.153  
0.46  
Code  
A
B
C
D
E
F
G
H
Min  
7.90  
3.90  
11.70  
5.45  
6.30  
5.10  
1.50  
1.50  
Max  
8.10  
4.10  
12.30  
5.55  
6.50  
5.30  
n/a  
Max  
0.318  
0.161  
0.484  
0.218  
0.255  
0.208  
n/a  
0.214  
0.248  
0.200  
0.059  
0.059  
1.60  
0.062  
F
D
B
C
A
E
G
H
REEL DIMENSIONS FOR 8SOICN  
Metric  
Imperial  
Code  
A
B
C
D
E
F
G
H
Min  
329.60  
20.95  
12.80  
1.95  
98.00  
n/a  
14.50  
12.40  
Max  
330.25  
21.45  
13.20  
2.45  
102.00  
18.40  
17.10  
14.40  
Min  
12.976  
0.824  
0.503  
0.767  
3.858  
n/a  
Max  
13.001  
0.844  
0.519  
0.096  
4.015  
0.724  
0.673  
0.566  
0.570  
0.488  
25 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Part Marking Information  
Part number  
Date code  
IR1169S  
YWW ?  
IR logo  
Pin 1  
Identifier  
C XXXX  
Lot Code  
(Prod mode –  
4 digit SPN code)  
?
MARKING CODE  
P
Lead Free Released  
Assembly site code  
Per SCOP 200-002  
Non-Lead Free Released  
26 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  
IR1169S  
Qualification Information†  
Industrial††  
Comments: This family of ICs has passed JEDEC’s  
Industrial qualification. IR’s Consumer qualification level is  
granted by extension of the higher Industrial level.  
Qualification Level  
MSL2††† 260°C  
SOIC8N  
Moisture Sensitivity Level  
(per IPC/JEDEC J-STD-020)  
Class A  
Machine Model  
Human Body Model  
(per JEDEC standard JESD22-A115)  
ESD  
Class 1C  
(per EIA/JEDEC standard EIA/JESD22-A114)  
Class I, Level A  
(per JESD78)  
Yes  
IC Latch-Up Test  
RoHS Compliant  
Qualification standards can be found at International Rectifier’s web site http://www.irf.com/  
†† Higher qualification ratings may be available should the user have such requirements. Please contact your  
International Rectifier sales representative for further information.  
††† Higher MSL ratings may be available for the specific package types listed here. Please contact your  
International Rectifier sales representative for further information.  
The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility  
for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of  
other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any  
patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This  
document supersedes and replaces all information previously supplied.  
For technical support, please contact IR’s Technical Assistance Center  
http://www.irf.com/technical-info/  
WORLD HEADQUARTERS:  
233 Kansas St., El Segundo, California 90245  
Tel: (310) 252-7105  
27 www.irf.com  
© 2012 International Rectifier  
December 12, 2012  

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