IR1176S International Rectifier, IR1176S Datasheet

IC DRIVER SYNC 5V 4A 20-SSOP

IR1176S

Manufacturer Part Number
IR1176S
Description
IC DRIVER SYNC 5V 4A 20-SSOP
Manufacturer
International Rectifier
Datasheet

Specifications of IR1176S

Configuration
Low-Side
Input Type
Non-Inverting
Current - Peak
4A
Number Of Configurations
2
Number Of Outputs
2
Voltage - Supply
4 V ~ 5.25 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Delay Time
-
High Side Voltage - Max (bootstrap)
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IR1176S
Manufacturer:
NS
Quantity:
12 500
Part Number:
IR1176S
Manufacturer:
IR
Quantity:
3 000
Part Number:
IR1176S
Manufacturer:
IR
Quantity:
20 000
Features
Description
The IR1176 is a high speed CMOS controller designed
to drive N-channel power MOSFETs used as synchro-
nous rectifiers in high current, high frequency forward
converters with output voltages equal or below 5V
Schmitt trigger inputs with double pulse suppression
allow the controller to operate in noisy environments.
The circuit does not require any ties to the primary
side and derives its operating power directly from
the secondary. The circuit functions by anticipating
transformer output transitions, then turns the power
MOSFETs on or off before the transitions of the trans-
former to minimize body drain diode conduction and
reduce associated losses. Turn on/off lead time can
be adjusted to accommodate a variety of power
MOSFET sizes and circuit conditions. The IR1176 also
provides gate drive overlap/dead-time control via
external components to further minimize diode con-
duction by nulling effects of secondary loop and de-
vice package inductance.
Minimizes loss due to power MOSFET body
Stand alone operation - no ties to primary side
High peak current drive capability - 4A
High speed operation - 2MHz
Provides constant and proper gate drive to power
MOSFETs regardless of transformer output
drain diode conduction
Schmitt trigger input with double pulse suppress-
ion allows operation in noisy environments
Adaptable to multiple topologies
SYNCHRONOUS RECTIFIER DRIVER
DC
.
Packages
Product Summary
Max lead time
I
O+/- (peak)
F
V
Preliminary Data Sheet PD60185-C
max
dd
20 Lead SOIC (MS-013AC)
IR1176SS
20 Lead Surface Mount
20 Lead PDIP
(MS-001AD)
IR1176S
(SSOP-20)
IR1176
500nsec
4A/4A
2MHz
5Vdc
IR1176

Related parts for IR1176S

IR1176S Summary of contents

Page 1

... Preliminary Data Sheet PD60185-C SYNCHRONOUS RECTIFIER DRIVER Product Summary O+/- (peak) F max Max lead time Packages . DC 20 Lead SOIC (MS-013AC) IR1176 5Vdc 4A/4A 2MHz 500nsec IR1176S 20 Lead Surface Mount (SSOP-20) IR1176SS IR1176 20 Lead PDIP (MS-001AD) ...

Page 2

IR1176 Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. Symbol Definition V Supply voltage dd I Input clamp current in P Power dissipation D Rth Thermal resistance JC Rth Thermal resistance ...

Page 3

Dynamic Electrical Characteristics o Vdd=5V Rbias = 34.0K unless otherwise specified. A Symbol Definition Vdd Supply voltage operating range Iqdd Vdd quiescent current ( 5V, Iout = 0) Freq Operating frequency ...

Page 4

... DTOUT1 DTOUT2 4 17 DTIN1 DTIN2 5 16 RADV2 RADV1 6 15 VFLTR2 VFLTRI 7 14 RVCO1 RVCO2 AVDD AVSS 10 11 UVSET RBIAS IR1176SS SOIC (wide body *VDD VSS 3 18 DTOUT1 DTOUT2 4 17 DTIN1 DTIN2 5 16 RADV2 RADV1 6 15 VFLTR2 VFLTRI 7 14 RVCO1 RVCO2 8 13 ...

Page 5

Fig. 1 Typical application circuit when supply Vout < 5.0 V Fig. 2 Typical application circuit when supply Vout = 5.0 V www.irf.com IR1176 ...

Page 6

IR1176 Fig. 3 Gate drive characteristics and definitions Phase Lock Loop Design Equations Resistor to set VCO Ceter Frequency: Rvco (KΩ) = [1E2 x Vchgpump(V Example (A): Choose Vchgpump = 1.5V, desired frequency (fvco) = 300KHz Rvco = ...

Page 7

PLL Nat fn(KHz)= Choose PLL Dampi ...

Page 8

IR1176 8 IR1176 Fig. 5 IR1176 Block Diagram www.irf.com ...

Page 9

Response at 25 T_DT vs R_DT 100pF 500 400 300 200 100 0 0 10K 20K 30K resistance Response at 25 T_ADV vs R_ADV www.irf.com 5 0 ...

Page 10

IR1176 Case Outline 20 Lead Surface Mount (SSOP-20) 10 01-6057 00 01-3078 00 (MS013AC) www.irf.com ...

Page 11

Case Outline www.irf.com 20 Lead SOIC IR1176 01-6070 00 01-3080 00 (MS013AC) 11 ...

Page 12

IR1176 Case Outline WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 12 20 Lead PDIP Data and specifications subject to change without notice. 01-6069 00 01-3079 00 (MS001AD) 1/7/2002 www.irf.com ...

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