ir11682s International Rectifier Corp., ir11682s Datasheet

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ir11682s

Manufacturer Part Number
ir11682s
Description
Dual Smart Rectifier Driver Ic Features
Manufacturer
International Rectifier Corp.
Datasheet

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Typical Connection Diagram
*Please note that this datasheet contains advance information that could change before the product is
released to production.
Features
Typical Applications
Secondary-side
synchronous rectification in resonant half bridge
topologies
200V proprietary IC technology
Max 400KHz switching frequency
Anti-bounce logic and UVLO protection
4A peak turn off drive current
Micropower start-up & ultra low quiescent current
10.7V gate drive clamp
80ns turn-off propagation delay
Wide Vcc operating range
Direct sensing for both Synchronous Rectifiers
Cycle by Cycle MOT Check Circuit prevents multiple
false trigger GATE pulses
Minimal component count
Simple design
Lead-free
LCD & PDP TV, Telecom SMPS, AC-DC adapters
Vin
Rtn
C1
C2
high
M1
M2
1
speed
Lr
2
controller
SR1
for
Rg1
Package Options
Product Summary
Topology
VD
V
I
Turn on Propagation Delay
Turn off Propagation Delay
o+
1
2
3
4
OUT
IR11682
DUAL SMART RECTIFIER DRIVER IC
& I
GATE1
VCC
VS1
VD1
IR1168
o-
Cdc
(typical)
GATE2
GND
VD2
VS2
8
7
6
5
SR2
8-Lead SOIC
Rg2
© 2010 International Rectifier
Datasheet No – 97476
LLC Half-bridge
200V
10.7V Clamped
+1A & -4A
100ns (typical)
80ns (typical)
IR11682S
Cout
March 24, 2010
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ir11682s Summary of contents

Page 1

... OUT I o+ Turn on Propagation Delay Turn off Propagation Delay Package Options SR1 Rg1 Datasheet No – 97476 IR11682S DUAL SMART RECTIFIER DRIVER IC LLC Half-bridge 200V 10.7V Clamped & I (typical) +1A & -4A o- 100ns (typical) 80ns (typical) 8-Lead SOIC Cdc 8 GATE1 GATE2 ...

Page 2

... Electrical Characteristics Functional Block Diagram Input/Output Pin Equivalent Circuit Diagram Lead Definitions Lead Assignments Application Information and Additional Details Package Details Tape and Reel Details Part Marking Information Ordering Information www.irf.com © 2010 International Rectifier 2 IR11682S Page ...

Page 3

... MOSFETs. Ruggedness and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression that allows reliable operation in fixed and variable frequency applications. www.irf.com © 2010 International Rectifier 3 IR11682S ...

Page 4

... 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. SOIC8N (per JEDEC standard JESD22-A115) (per EIA/JEDEC standard EIA/JESD22-A114) 4 IR11682S †† Industrial ††† MSL2 260°C (per IPC/JEDEC J-STD-020) ...

Page 5

... V -5 200 -0.3 20 GATE T -40 150 J T -55 150 S R 128 θJA P 970 D fsw 400 Definition 5 IR11682S Units Remarks =20V, Gate off CC °C °C °C/W SOIC-8 mW SOIC-8, T =25°C AMB kHz Min. Max. Units 8.6 18 † -3 200 -25 125 ° ...

Page 6

... IBIAS2 V 2 OFFSET Symbol Min. Typ. Max BLANK 2.5 V TH3 5 HYST3 Symbol Min. Typ. Max. T 600 850 1100 Onmin 6 IR11682S and I ) parameters O O Units Remarks V GBD =1nF 400kHz mA LOAD SW C =4.7nF 400kHz mA LOAD SW mA µ 0. ...

Page 7

... Don t 80 120 Doff 1.2 down source sink 7 IR11682S and I ) parameters O O Units Remarks 200mA GATE V V =12V-18V (internally clamped 1nF LOAD 4.7nF LOAD 1nF LOAD 4.7nF ...

Page 8

... VTH3 RESET Min ON Time (With Cycle by Cycle MOT Check Circuit) Min OFF Time Min ON Time (With Cycle by Cycle MOT Check Circuit) Min OFF Time RESET VTH3 8 IR11682S VCC UVLO & REGULATOR GATE1 Shoot-through Protection Logic GATE2 COM © 2010 International Rectifier ...

Page 9

... I/O Pin Equivalent Circuit Diagram www.irf.com © 2010 International Rectifier 9 IR11682S ...

Page 10

... Sync FET 1 Source Voltage Sense Sync FET 1 Drain Voltage Sense Sync FET 2 Drain Voltage Sense Sync FET 2 Source Voltage Sense Analog and Power Ground Gate Drive Output 2 1 GATE1 GATE2 2 VCC GND 3 VS1 VS2 4 VD1 VD2 10 IR11682S © 2010 International Rectifier ...

Page 11

... MOSFETs 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. www.irf.com The internal devices and gate driver are © 2010 International Rectifier 11 IR11682S ...

Page 12

... This function can avoid reverse current that occurs when the system works at very light/no load conditions and reduce system standby power consumption by disabling GATE outputs. The IC automatically goes back to normal operation mode once the load increases to a level and the secondary current conduction time is longer than MOT. www.irf.com © 2010 International Rectifier 12 IR11682S ...

Page 13

... V Gate V TH1 Figure 1: Input comparator thresholds *R . This drop is usually accompanied by some amount of ringing, that D DSON 13 IR11682S as a shunt resistance and the DSON as a shunt resistance and its GATE is DSON TH3 . TH2 © 2010 International Rectifier ...

Page 14

... IC is ready for next BLANK TH1 V TH2 Gate Drive Blanking MOT Figure 2: Secondary currents and voltages Figure 3: Waveform without MOT protection 14 IR11682S threshold with a relatively TH1 after VTH1 is triggered. When the BLANK V TH3 t BLANK time © 2010 International Rectifier ...

Page 15

... Figure 4: Waveform under MOT protection mode General Timing Waveform VCC UVLO TH2 90% 50% 10% www.irf.com NORMAL Figure 5: Vcc UVLO V TH1 t Don V Gate t rise Figure 6: Timing waveform 15 IR11682S VCC ON VCC UVLO t UVLO t Doff t fall © 2010 International Rectifier ...

Page 16

... Figure 8: Undervoltage Lockout vs. Temperature 14.0 13.9 13.8 13.7 13.6 13.5 13.4 13.3 13.2 13.1 100 °C 150 °C -50 °C Figure 10: Icc Supply Currrent @1nF Load vs. 16 IR11682S VCC ON VCC UVLO 0 °C 50 °C 100 °C 150 °C Temperature Icc @400KHz, C =1nF LOAD 0 °C 50 °C 100 °C 150 °C Temperature Temperature ...

Page 17

... Figure 12: V 900 ns 890 ns 880 ns 870 ns 860 ns Ch2 850 ns Ch1 840 ns 830 ns 100 °C 150 °C -50 °C Figure 14: MOT vs Temperature 17 IR11682S Ch2 Ch1 0 °C 50 °C 100 °C 150 °C Temperature vs. Temperature TH2 MOT_Ch1 MOT_Ch2 0 °C 50 °C 100 °C 150 °C Temperature ...

Page 18

... Figure 18: Gate Output Tr and Tf time @ 1nF 18 IR11682S Ch1 Turn-off Propagation Delay Ch2 Turn-off Propagation Delay 0 °C 50 °C 100 °C 150 °C Temperature Temperature Tr_Ch1 Tr_Ch2 Tf_Ch1 Tf_Ch2 0 °C 50 ° ...

Page 19

... Package Details: SOIC8N www.irf.com © 2010 International Rectifier 19 IR11682S ...

Page 20

... Metric Imperial Min Max Min 329.60 330.25 12.976 20.95 21.45 0.824 12.80 13.20 0.503 1.95 2.45 0.767 98.00 102.00 3.858 n/a 18.40 n/a 14.50 17.10 0.570 12.40 14.40 0.488 20 IR11682S Max 0.318 0.161 0.484 0.218 0.255 0.208 n/a 0.062 A Max 13.001 0.844 0.519 0.096 4.015 0.724 0.673 0.566 © 2010 International Rectifier ...

Page 21

... Part Marking Information www.irf.com © 2010 International Rectifier 21 IR11682S ...

Page 22

... For technical support, please contact IR’s Technical Assistance Center www.irf.com Standard Pack Form Tube/Bulk SOIC8N Tape and Reel http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 22 IR11682S Complete Part Number Quantity 95 IR11682SPBF 2500 IR11682STRPBF © 2010 International Rectifier ...

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