AN2738 datasheet(9/54 Pages) STMICROELECTRONICS

No. de pieza	AN2738

Descripción Electrónicos	L6390 half-bridge gate driver

PDF	54 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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9 / 54 page

AN2738

Dead time and interlocking function management

Doc ID 14589 Rev 2

9/54

Figure 4.

Timing waveforms

Figure 5.

Typical dead time vs. DT resistor value

LIN

HIN

LVG

HVG

LIN

HIN

LVG

HVG

LIN

HIN

LVG

HVG

LIN

HIN

LVG

HVG

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

CONTROL SIGNAL EDGES

OVERLAPPED:

INTERLOCKING + DEAD TIME

CONTROL SIGNALS EDGES

SYNCHRONOUS (*):

DEAD TIME

CONTROL SIGNALS EDGES

NOT OVERLAPPED,

BUT INSIDE THE DEAD TIME:

DEAD TIME

CONTROL SIGNALS EDGES

NOT OVERLAPPED,

OUTSIDE THE DEAD TIME:

DIRECT DRIVING

(*) HIN and LIN can be connected togheter and driven by just one control signal

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

gate driver outputs OFF

(HALF-BRIDGE TRI-STATE)

0.5

1.5

2.5

3.5

100

150

200

250

300

Rdt (kOhm)

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