Datasheet > 5962-12236

5962-12236

更新时间： 2022-06-02 22:18:50

品牌	Logo	应用领域
安华高科 - AVAGO		光电栅驱动
页数	文件大小	规格书
33页	557K
描述
2.5 Amp Gate Drive Optocoupler with Integrated (VCE) Desaturation Detection and Fault Status Feedback

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5962-12236 数据手册

Typical Fault Protected IGBT Gate Drive Circuit

The ACPL-516x is an easy-to-use, intelligent gate driver

age lockout (UVLO),“soft”IGBT turn-oﬀ and isolated fault

feedback provide maximum design ﬂexibility and circuit

protection.

which makes IGBT V fault protection compact, aﬀord-

able, and easy-to-implement. Features such as user con-

ﬁgurable inputs, integrated V detection, under volt-

ACPL-516x

IN+

IN-

BLANK

100 Ω

LED2+

DESAT

DESAT 14

CC1

–

µC

GND1

RESET

FAULT

CC2

–

OUT

–

LED1+

LED1-

PULL-DOWN

* THESE COMPONENTS ARE ONLY REQUIRED WHEN NEGATIVE GATE DRIVE IS IMPLEMENTED.

Figure 1. Typical desaturation protected gate drive circuit, noninverting

Description of Operation during Fault Condition

Output Control

1. DESATterminalmonitorstheIGBTV voltagethrough The outputs (V

and FAULT) of the ACPL-516x are con-

OUT

trolled by the combination of V , UVLO and a detected

DESAT

IGBT Desat condition. As indicated in the below table, the

ACPL-516x can be conﬁgured as inverting or non-invert-

2. When the voltage on the DESAT terminal exceeds 7V,

the IGBT gate voltage (V ) is slowly lowered.

OUT

ing using the V or V inputs respectively. When an in-

IN+

IN-

3. FAULT output goes low, notifying the microcontroller

of the fault condition.

verting conﬁguration is desired, V must be held high

IN+

and V toggled. When a non-inverting conﬁguration is

IN-

4. Microcontroller takes appropriate action.

desired, V must be held low and V

toggled. Once

IN-

IN+

UVLO is not active (V

- V > V

), V

UVLO

is allowed to

OUT

CC2

go high, and the DESAT (pin 14) detection feature of the

ACPL-516x will be the primary source of IGBT protection.

UVLO is needed to ensure DESAT is functional. Once V

U-

> 11.6 V, DESAT will remain functional until V

VLO+

UVLO-

12.4 V. Thus, the DESAT detection and UVLO features of

the ACPL-516x work in conjunction to ensure constant

IGBT protection.

Desat Condition

Detected on

Pin 14

Pin 6

UVLO

(FAULT)

Output

Low

High

Low

(V - V )

OUT

IN+

IN-

CC2

Active

Low

High

Yes

Low

High

Not Active

High

123 4 5 6 7...33

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