EG3013 データシートの表示（PDF） - Unspecified

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コンポーネント説明

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EG3013

Half-Bridge Driver

Unspecified 

micro corp.

Input/Output Logic Table：

Input

HIN(Pin4）

LIN（Pin3）

0

0

0

1

1

0

1

1

EG3013 datasheet

Half-Bridge Driver

Output

HO(Pin7）

LO（Pin5）

0

1

0

0

0

0

1

0

From above logic table view, Case A: when HIN and LIN are low at same time, LO will output high to

turn on low side MOSFET and HO will output low to turn off high side MOSFET. Case B: when HIN and

low and LIN are high at same time, HO will output high to turn on high side MOSFET and LO will output

low to turn off low side MOSFET. Case C: when HIN goes low and LIN goes high or HIN goes high and

LIN goes low, HO and LO will simultaneously output low to turn off high and low side MOSFET, the

interlock and dead time functions prevent both outputs from being turned on simultaneously.

8.3 Bootstrap

The EG3013 uses a bootstrap structure, which has the advantage of being simply and low cost. The

Figure 8-3 will help to understand the operation of bootstrap circuit. The voltage at VCC forces current

through the internal bootstrap diode or external bootstrap diode, bootstrap capacitor and low side

MOSFET, which will charge the bootstrap capacitor to prepare it for driving the high side MOSFET.

External bootstrap diode

+48V

FR107

8 VB

HIN 2

+15V

VCC 1

VC

7 HO

6 VS

LIN 3

5 LO

EG3013

Figure 8-3. EG3013 Bootstrap circuit structure

Copyright © 2012 by EGmicro Corporation

www.EGmicro.com

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