AN4043 datasheet(39/60 Pages) STMICROELECTRONICS

39 / 60 page

AN4043

Package

Doc ID 022726 Rev 2

39/60

High-side bias voltage pins /high-side bias voltage reference

Pins: VbootU-U, VbootV-V, VbootW-W

●

The bootstrap section is designed to realize a simple and efficient floating power

supply, in order to provide the gate voltage signal to the high-side IGBTs

●

The SLLIMM-nano family integrates the bootstrap diodes. This helps users to save

costs, board space, and number of components

●

The advantage of the ability to bootstrap the circuit scheme is that no external power

supplies are required for the high-side IGBTs

●

Each bootstrap capacitor is charged from the VCC supply during the on-state of the

corresponding low-side IGBT

●

To prevent malfunction caused by noise and ripple in supply voltage, a good quality

(low ESR, low ESL) filter capacitor should be mounted close to these pins

●

The value of bootstrap capacitors is strictly related to the application conditions. Please

consult

Section 2.3.11: Bootstrap circuit for more information.

Gate driver bias voltage

Pins: VCC U, VCC V, VCC W

●

Control supply pins for the built-in ICs

●

To prevent malfunction caused by noise and ripple in the supply voltage, a good quality

(low ESR, low ESL) filter capacitor should be mounted close to these pins.

Gate drive supply ground

Pin: GND

●

Ground reference pin for the built-in ICs

●

To avoid noise influence, the main power circuit current should not be allowed to flow

through this pin (see

Section 5.1: Layout suggestions).

Pin #

Name

Description

STGIPN3H60A

STGIPN3H60

STGIPN3H60A

STGIPN3H60

Positive DC input

U phase output

Negative DC input for U phase

VbootV

Bootstrap voltage for V phase

V phase output

Negative DC input for V phase

VbootW

Bootstrap voltage for W phase

W phase output

Negative DC input for W phase

Table 10.

Input and output pins (continued)

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