IR2108半桥驱动

Data Sheet No. PD60161-R

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CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard CMOS or LSTTL output, down to 3.3V logic. The output drivers feature a high pulse current buffer stage designed for minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or IGBT in the high side configuration which operates up to 600 volts.

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IR2108(4) (S

) & (PbF)

Absolute Maximum Ratings

Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param-eters are absolute voltages referenced to COM. The thermal resistance and power dissipation ratings are measured S S BS DT97-3 for more details).

) & (PbF)

V BIAS (V CC, V BS) = 15V, V SS = COM, DT= V SS and T A = 25°C unless otherwise specified. The V IL, V IH and I IN parameters are referenced to V SS/COM and are applicable to the respective input leads: HIN and LIN. The V O, I O and Ron

parameters are referenced to COM and are applicable to the respective output leads: HO and LO.

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IR2108(4) (S

) & (PbF)

Functional Block Diagram

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IR2108(4) (S

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14 Lead PDIP 14 Lead SOIC

IR21084

IR21084S

Lead Assignments

8 Lead PDIP 8 Lead SOIC

1234

8

765

V CC HIN LIN COM

V B HO V S LO

1234

8

765

V CC HIN LIN COM

V B HO V S LO

1234567

14

1312111098

V CC HIN LIN DT VSS COM LO

V B HO V S

1234567

14

1312111098

V CC HIN LIN DT VSS COM LO

V B HO V S

Lead Definitions

Symbol Description

HIN

Logic input for high side gate driver output (HO), in phase (referenced to COM for IR2108 and VSS for IR21084)

Logic input for low side gate driver output (LO), out of phase (referenced to COM for IR2108and VSS for IR21084)

DT Programmable dead-time lead, referenced to VSS. (IR21084 only)VSS Logic Ground (21084 only)V B High side floating supply HO High side gate driver output V S High side floating supply return V CC Low side and logic fixed supply LO Low side gate driver output COM

Low side return

LIN

IR2108IR2108S

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IR2108(4) (S

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LIN

HO

LO

HIN

Figure 3. Deadtime Waveform Definitions

DT LO-HO

MDT=

- DT

HO-LO

LIN

LO

IR2108(4)(S

) & (PbF)

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IR2108(4) (S

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IR2108(4) (S

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m e (s

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IR2108(4) (S

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IR2108(4) (S

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n t (A

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IR2108(4) (S

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n t (A n t (A 300n t (A

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IR2108(4) (S

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n t (A n t (A n t (A

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IR2108(4) (S

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n t (A

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IR2108(4) (S

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n t (A n t (A

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IR2108(4) (S

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n t (A

) & (PbF)

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IR2108(4) (S

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IR2108(4)(S

) & (PbF)

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IR2108(4) (S

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IR2108(4)(S

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ORDER INFORMATION

Basic Part (Non-Lead Free)Lead-Free Part

8-Lead PDIP IR2108order IR21088-Lead PDIP IR2108order IR2108PbF

8-Lead SOIC IR2108S order IR2108S8-Lead SOIC IR2108S order IR2108SPbF 14-Lead PDIP IR21084order IR2108414-Lead PDIP IR21084order IR21084PbF 14-Lead SOICIR21084S order IR21084S14-Lead SOIC IR21084S order IR21084SPbF Array This product has been designed and qualified for the Industrial market.

Qualification Standards can be found on IR’s Website.

Data and specifications subject to change without notice. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105

TAC Fax: (310) 252-7903

Visit us at www.irf.com for sales contact information.09/08/04

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