DM Series Application Notes

DM Series

Gate Driver Module

Rev.1.1 Aug, 2016 TAMURA CORPORATION 1 / 19

Rev.1.1

Aug, 2016

Overview

The Gate driver module (DM Series) is composed of an insulating type DC / DC converter and the gate drive circuit.

DM series allows you to easily develop gate drive circuits by externally connecting gate circuits, DESAT protection

circuits, etc.

Features

・ Built-in DC/DC converter using a quasi-resonant circuit to ensure high efficiency.

・ Supporting input voltages of 15 V to 24 V.

・ Input-output dielectric withstand voltage: AC2500V (1 second guarantee)

・ Input-output insulation distance: 6 mm

・ Input-output capacitance of 15 pF typ., highly resistant to common-mode noise.

・ Gate driving signal is transmitted using magnetic coupling.

・ Very short delays of about 100 ns, providing compatibility with high frequency.

・ Resin filling for increased heat dissipation performance.

・ DC/DC converter incorporating overcurrent protection and overheating protection.

・ Gate drive circuits incorporating a fault signal output function, a low-voltage malfunction prevention function (UVLO,

under-voltage lockout), and a DESAT protection function.

The example of application circuits and parts value which are indicated to this application note aim at assistance of a

design. Therefore, external parts variation or user operating conditions are not fully taken into consideration. Please

take parts variation, operating conditions into consideration when designing.

DM Series Application Notes

Rev.1.1 Aug, 2016 TAMURA CORPORATION 2 / 19

Contents

1. Application examples ...................................................................................................................................................................................................3

1.1 Circuit example (For SiC-MOSFET) ..............................................................................................................................................................3

1.2 Parts example (For SiC-MOSFET).................................................................................................................................................................3

1.3 Circuit example (For IGBT) ................................................................................................................................................................................4

1.4 Parts example (For IGBT) ..................................................................................................................................................................................4

1.5 Block diagram..........................................................................................................................................................................................................5

2. Pin functions and descriptions .................................................................................................................................................................................6

2.1 Pin functions ............................................................................................................................................................................................................6

2.2 Pin descriptions ......................................................................................................................................................................................................7

2.3 Operation truth table ............................................................................................................................................................................................8

2.4 Functional description ..........................................................................................................................................................................................8

3. Selection and description of external components ..................................................................................................................................... 10

3.1 Abnormal input current protection .............................................................................................................................................................. 10

3.2 Gate circuits ......................................................................................................................................................................................................... 10

3.3 DESAT protection circuit ................................................................................................................................................................................ 11

4. DC/DC converter protection functions ............................................................................................................................................................ 12

4.1 Overload protection function ......................................................................................................................................................................... 12

4.2 Overheat protection function ........................................................................................................................................................................ 12

5. Peripheral board design, wiring, and setting for the module ................................................................................................................... 13

5.1 Gate wiring ............................................................................................................................................................................................................ 13

5.2 Areas where neither components nor wiring patterns may be placed ....................................................................................... 13

5.3 Wiring for GND on the input side ................................................................................................................................................................. 14

5.4 Wiring of the DC/DC converter .................................................................................................................................................................. 14

5.5 Use in a strong magnetic field ..................................................................................................................................................................... 15

5.6 Input signals .......................................................................................................................................................................................................... 15

5.7 One-channel driving .......................................................................................................................................................................................... 16

5.8 Use of a mechanical switch for input for the DC/DC converter .................................................................................................. 16

6. Recommended hole diameter, land size, and pin pitch ................................................................................................................................ 17

7. Recommended soldering conditions (lead-free solder) ............................................................................................................................. 17

8. Temperature derating............................................................................................................................................................................................... 18

Important Notice ............................................................................................................................................................................................................... 19