Confidential

Datasheet Version 1.1

June 2016. Revision 1.1

MagnaChip Semiconductor Ltd.

5

Level shifters

The MSI6000 has the 11-channel high voltage level shifter. It is designed to shift the level of a logic signal to

VGH or VGL. VGH is positive supplies with voltage range for +5V to +37.5V. and VGL is the negative supply with

voltage range for -15V to -5V.

Figure 2 contains a simplified block diagram of one channel with gate voltage shaping.

Level

Shifter&

GPM

Control

Block

RE

VGL

Q3

Q2

Q1

VGH

AVDD

ONCLK

OFFCLK

Figure 2) Level shifter Channel with Gate Voltage Shaping

On the rising edge of ONCLK, Q1 turns on, Q2 turns off and Q3 is turned on during a certain time which is set

by the RE resistor. So GCLK1 is charged by AVDD voltage through the RE resistor. After that, Q3 is turned off

and Q1 is turned on and GCLK1 voltage goes up to VGH. On the rising edge of OFFCLK, Q1 turns off, Q3 is

turned on, and GCLK1 voltage slices through Q3 and the RE resistor is connected to RE pin. On the falling edge

of OFFCLK, Q2 is turned on and Q3 is turned off, and GCLK1 voltage is driven to VGL.

This sequence is shown in the below figure.

Figure 3) Gate Voltage Shaping Timing Diagram

OFFCLK

GCLK1

ONCLK

VGL

GND

VGH

GND

GND