＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESFEATURES

VLA557-03R>Single channel simple and easy gate drive system>Wire connection to IGBT module>Built in the isolated DC-DC converter for gate drive>Output peak current is +/-24A(max)>Built in short circuit protection with 2steps soft shut down
>Electrical isolation voltage is 6000Vrms (for 1 minute)>Fiber optic interface

TARGETED HVIGBT MODULES
VCES=3300V series up to 600A class LV100 type

APPLICATIONS

Medium voltage inverter , HVDC infrastructure , Traction or Wind power etc.

OUTLINE

Clearance
Input side - Output side  22.5mm

BLOCK DIAGRAM
CN1
VCC

VD

Creepage22.5mm

Note1) There is not Gate Resistors at the initial state.
So please solder the chosen resistor.

UVL
E

DC‐AC
C4(Ctrip)

CN2

VEE

GND

LATCH & TimerFOR1

HFBR‐2522ZC

DETECTReg.

TP1(Vo)

CN3

INTER
FACE

GE

SHUT DOWN
F.O.

G

FOT1

E

TP2(Fo)CN4
HFBR‐1522Z

VCC : HIC 25,31pin
E: HIC 26,27,34pin
VEE : HIC 28pin

CN3 : Main output connector
CN4 : Sub connector

TP : Test Pad

Oct.2020

1＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULES

MAXIMUM RATINGS(unless otherwise noted, Ta=25 ℃)

SymbolParameter

Conditions

VD

Supply voltage

Between VD and GND

IOHPRatings

Unit

16V-24

A

24

A

Output peak current

Pulse width 3us

VisoIsolation voltage between
primary and secondary

Sine wave voltage 60Hz, for 1min

6000

Vrms

Tc

Case temperature

Surface temperature of power transistor

100

deg CTopr

Operating temperature

No condensation allowable-40 ~ 85

deg CTstg

Storage temperature

No condensation allowable-40 ~ 85deg C

IOLPIdriveGate drive current

Gate average current

200mA

VC

Peak collector voltage

Peak terminal voltage of CN23300

V

ELECTRICAL CHARACTERISTICS
SymbolParameter

VD

Supply voltagef
RG(unless otherwise noted, Ta=25℃,VD=15V, Rg_on=Rg_off=1.5Ω, f=3kHz)
Conditions

Limits

Unit

Min

TypMaxRecommended range

14.5

15

15.5

V

Switching frequency

Recommended range
It is limited by gate average current (max:200mA)

--

10kHz

Gate resistance

Recommended range (Total compound value)

0.5--ΩVOH

Plus bias output voltage

Idrive = 0 ~ 200mA

13.5

15.3

16.5

VVOL

Minus bias output voltage

Idrive = 0 ~ 200mA-16.5-13-11VtPLH“L-H” propagation time

IF=30mA, Fiber length=50cm, C_load:0.57uF

0.1

0.4

0.8

us

tPHL

“H-L” propagation time

IF=30mA, Fiber length=50cm, C_load:0.57uF

0.03

0.15

0.5

us

ttimerTimer

Between start and cancel of protection(Under input signal is off state)

1-2

msttrip

Masked time detect
short circuit

Detect terminal (CN2) : over than 50V or open-

3.6-

us

VSC

SC detect voltage

Collector voltage of IGBT50--V

UVLO+_VCC

Under voltage lock out(Operation start)

VCC voltage

-

12.6-

V

UVLO-_VCC

Under voltage lock out(Operation stop)

VCC voltage

-

11.7

-

V2

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESCONNECTION EXAMPLE 1

Gate drive unit VLA557(High side)
Wire cable for gate drive*Less than 20cm (rough guide)( 2 parallel )Adaptor Unit
(VLA595)

Gate drive unit VLA557(Low side)
Wire cable for low sidecollector sense
Wire cable for high sidecollector sense

Note) When gate drive cable exceeds 20cm, please make it a twisted pair.

( 4 parallel )3

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESCONNECTION EXAMPLE2( 2 parallel )Wire cable for gate drive*Less than 20cm (rough guide)

VLA557 (High side)

VLA557 (Low side)

Wire cable for high sidecollector sense
Wire cable for low sidecollector sense

Note) When gate drive cable exceeds 20cm, please make it a twisted pair.

VLA557 (High side)( 4 parallel )VLA557 (Low side)4＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE1( single connection 1 )

VCC

CN1VD
UVL

E

DC‐AC
GND

C4(Ctrip)

L/F

DETECTReg.

TP1(Vo)LATCH & Timer

FOR1

CN2

VEE

2INTER
FACE

CN3

CN21

SHUT DOWN
F.O.

321

TLAC

321

CN121

FOT1
TP2(Fo)VLA557‐03R

CN4VLA595

VCC

CN1VD
UVL

E

DC‐AC
GND

C4(Ctrip)

L/F

DETECTReg.

LATCH & Timer

FOR1CN2VEE

TP1(Vo)2INTERFACE

CN31SHUT DOWN
F.O.

21FOT1
TP2(Fo)VLA557‐03R

5CN4CN4321TLAC

321CN3＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE2( single connection 2 )

VCC

CN1
VD
UVL

E

DC‐AC
GND

C4(Ctrip)

L/F

DETECTReg.

TP1(Vo)LATCH & Timer

FOR1

CN2

VEE

2INTER
FACE

CN3

CN21

SHUT DOWN
F.O.

321

TLAC

321

CN1

21

FOT1
TP2(Fo)VLA557‐03R

CN4

VLA595

VCC

CN1
VD
UVL

E

DC‐AC
GND

C4(Ctrip)

L/F

DETECTReg.

LATCH & Timer

FOR1

CN2

VEE

TP1(Vo)2INTER
FACE

CN31

SHUT DOWN
F.O.

21

FOT1TP2(Fo)

VLA557‐03R

6CN4CN4321TLAC

321CN3

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE3( 3 parallel connection )

VCC

CN1VD
UVL

E

DC‐AC
GND

C4(Ctrip)

L/F

DETECT

Reg.

L/F

L/F

TP1(Vo)LATCH & Timer

FOR1CN2VEE

2INTER
FACE

CN3

CN21

SHUT DOWN
F.O.

321TLAC

321CN1

CN2321TLAC

321CN1

CN2321TLAC

321CN121FOT1TP2(Fo)VLA557‐03R

CN4VCC

CN1VD

VLA595

VLA595

VLA595

L/F

L/F

L/F

UVL
E

DC‐AC
GND

C4(Ctrip)Reg.

LATCH & Timer

FOR1CN2VEEDETECT
TP1(Vo)2INTERFACE

CN31SHUT DOWN
F.O.

CN4321

TLAC

21

FOT1
TP2(Fo)VLA557‐03R

CN47321CN3

CN4321TLAC

321CN3CN4321TLAC

321CN3

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULES

CALCULATION FOR GATE DRIVE CURRENT (GATE AVERAGE CURRENT)
Gate charge characteristic of IGBTThis product has isolated DCDC converter built in for gate drive.
The maximum output average current is 200mA.
This current means maximum gate average current.
When you decide the switching frequency,
please check the gate average current by next formula.

VGE
15V

Idrive = (Q1＋lQ2l ) x f x N
 It must be less than 200mA
Idrive: Gate average current
Q1: Gate charge at +15V (Read from data sheet of IGBT)
Q2: Gate charge at -13V (Read from data sheet of IGBT)
f: Switching frequency of MOSFET
N: Parallel numberGate charge-13V
Q1

Q2

DEFINITION OF CHARACTERISTICS
Normal switching operation

Operation of short circuit protection
IF30mA
IF

50%

VOH

Vo(TP1)

0V
‐10V
ttrip

Vo(TP1)

ttimer0V
10V

Fo(TP2)

VOL

0V

tPHL

tPLH

Fault output(Primary)

Tested by
f=3kHz, Duty=50%

INTERFACE APPLICATION EXAMPLE

VLA557-03R

CN1
VCC

VD

VD
15V

5V

E

DC‐AC
C4(Ctrip)IF
HFBR-1522Z etc.
Gate signal

UVL

LEDdrive
circuitGND

CN2VEEC

DETECTReg.

TP1(Vo)LATCH & Timer

FOR15V

Optical fiber cablefor gate signal

4.7k

CN3INTERFACESHUT DOWNF.O.

HFBR‐2522Z

EGFOT1E

TP2(Fo)Fault output

VCC : HIC 25,31pin
E : HIC 26,27,34pin
VEE : HIC 28pin

HFBR‐1522Z

0.1μF

G

CN3 : Main output connector
CN4 : Sub connector

HFBR-2523Z etc.
Optical fiber cablefor fault signal

8CN4

TP : Test Pad

IGBT module

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULES

OPERATION OF PROTECTION CIRCUITOPERATION FLOW ON DETECTING SHORT CIRCUIT(1) In case the gate voltage is “H” and the collector voltage is high,this drive unit will recognize the circuit as short circuit andreduce the gate voltage. Besides, put out fault signal (”L”)
which inform that protection circuit is operating at the sametime from Fo terminal (Test Pad2).
(2) The protection circuit reset and resort to ordinary condition
if input signal is “OFF” when the premised 1~2msec passed.
( “OFF” period needs 10us or more )(3) When the output rises, the masked time detect short circuit (ttrip)
is set up so that on-time of IGBT can be secured properly.

STARTDETECTION OF
SHORT CIRCUITGATE SHUTDOWNTIMER STARTOUTPUT FAULT SIGNALLATCH & TIMER RESET SYSTEM IN SHORTCIRCUIT PROTECTION CIRCUIT

Once the short-circuit protection circuit starts, it shuts down
the gate output and keeps fault output, causing the latchstatus. This status is canceled if the input signal is OFF
when specific time elapses after the activation of the shortcircuit protection circuit. Then, gate output depending oninput signals becomes possible. If the input signal is ON
when specific time elapses, the latch status is not canceled:
it is canceled when the input signal becomes OFF.

END OF TIMER

TIMER
1 ~ 2msNoYes

INPUT SIGNAL ISOFF

As mentioned above, on the latch & timer reset system, thelatch status is resulted after activation of the protection
circuit and shutdown of the gate output. Therefore, during
this period, gate output is not made no matter how much
input signals are received. For this reason, it is possible tosafely stop the entire equipment by sending error signals tothe microcomputer during this period to stop all gate signals.

NoYes

CLEAR ALARM
ENABLE OUTPUT

TIMING CHART

IF(Primary LED)

VGE(IGBT)VCE(IGBT)

IC(IGBT)

VSC
Short-circuitoccurrence

Masked time (ttrip)
TimerFo(TP2)

The latch status is canceled.
Fault output(Primary)

9＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESABOUT MOUNTING GATE RESISTORS

There is not Gate Resistors on this unit at the initial state.
It is possible to install up to 4 resistors in mount area of gate resistor.
And there are some variations by combining resistors.
There are some examples in the following chart, please refer to it and set the gate resistors.
And please solder the chosen resistors.
TP1(Vo)Drivecircuit

SBD
D4SBD
D5CN3

RG1

RG2

RG3

RG4

GE

Layout pattern connection on substrate: Gate resistor mount part (Initial is open)
Example 2

Example 1
D4

Drivecircuit

D5

RG1

CN3

RG2

Rg_on RG1
Rg_off RG2

RG2

RG3

RG4

Rg_on RG1//RG3
Rg_off RG2//RG4
D5

D4

CN3

GE
Rg_on=Rg_off  RGa

RGa

THE WAY TO CALCULATE GATE RESISTANCE VALUE OF PARALLEL CONNECTION
RG_ON/1elem. = Gate ON resistance value per one element = Rb + (N x Rg_on)
RG_OFF/1elem. = Gate OFF resistance value per one element = Rb + (N x Rg_off)
Note)

Rb: Balance resistance value on adaptor unit
N: Parallel number of modules
Rg_on : Gate ON resistance value on VLA557
Rg_off : Gate OFF resistance value on VLA557
VCC

CN1
VD
UVL

E

DC‐AC
GND

C4(Ctrip)

LATCH & Timer

FOR1

CN2

VEE

DETECTReg.

TP1(Vo)

2

INTER
FACE

CN31

SHUT DOWN
F.O.

21

FOT1
TP2(Fo)

10

CN3

RG1

Example 3

Drivecircuit

D5

D4

Drivecircuit

Rg_on

Rg_offCN4

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESDETAILS OF CONNECTOR
CN1 : 53259-0229 (Molex)

CN3: 53259-0229 (Molex)

Pin No.

SignalPin No.

Signal1

VD

1Emitter

2

GND

2

Gate

CN4: 53259-0229 (Molex)

CN2: 53259-0229 (Molex)
Pin No.

SignalPin No.

Signal1

Collector

1

Emitter2

Collector

2

Gatepin2
CN2 pin1

Screw hole Φ3.5mm x 6
pin2
pin1
pin2
CN3pin1CN4

pin1
CN1
CN1
pin2

We recommend following parts or equivalent product for wire cable
HOUSINGTERMINAL

Maker

51067-0200

50217-8100

Molex

INSTALLATION OF THE DRIVE UNIT ON METALLIC CASE
When fixing this drive unit on a metallic case, please use the spacer made of the resin.
Screw& washerScrew& washer

Metallic caseSpacer made of the resin

11

＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULESFOR SAFETY USINGGreat detail and careful attention are given to the production activity of Hics, such as the development, the quality ofproduction, and in itʼs reliability. However the reliability of Hics depends not only on their own factors but also intheir condition of usage. When handling Hics, please note the following cautions.

CAUTIONS
Packing

Carrying

The materials used in packing Hics can only withstand normal external conditions.
When exposed to outside shocks, rain and certain environmental contaminators, thepacking materials will deteriorates. Please take care in handling.
1)
2)
3)
4)
5)

Donʼt stack boxes too high. Avoid placing heavy materials on boxes.
Boxes must be positioned correctly during transportation to avoid breakage.
Don't throw or drop boxes.
Keep boxes dry. Avoid rain or snow.
Minimal vibration and shock during transportation is desirable.

Storage

When storing Hics, please observe the following notices or possible deterioration of
their electrical characteristics, risk of solder ability, and external damage may occur.
1)
Devices must be stored where fluctuation of temperature and humidity is
minimal, and must not be exposed to direct sunlight. Store at the normal
temperature of 5 to 30 degrees Celsius with humidity at 40 to 60%.
2)
Avoid locations where corrosive gasses are generated or where much dust
accumulates.
3)
Storage cases must be static proof.
4)
Avoid putting weight on boxes.

Extendedstorage

When extended storage is necessary, Hics must be kept non-processed. When using
Hics which have been stored for more than one year or under severe conditions, besure to check that the exterior is free from flaw and other damages.

Maximumratings

To prevent any electrical damages, use Hics within the maximum ratings. The
temperature, current, voltage, etc. must not exceed these conditions.

Polarity

To protect Hics from destruction and deterioration due to wrong insertion, make sureof polarity in inserting leads into the board holes, conforming to the external view forthe terminal arrangement.

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＜Gate Drive Unit＞

VLA557-03R
DRIVER FOR HVIGBT MODULES

Keep safety first in your circuit designs!
·ISAHAYA Electronics Corporation puts the maximum effort into making semiconductor products betterand more reliable, but there is always the possibility that trouble may occur with them. Trouble withsemiconductors may lead to personal injury, fire or property damage. Remember to give due
consideration to safety when making your circuit designs, with appropriate measures such as (1)placement of substitutive, auxiliary circuits, (2) use of non-flammable material or (3) prevention
against any malfunction or mishap.
Notes regarding these materials·These materials are intended as a reference to our customers in the selection of the ISAHAYA products
best suited to the customerʼs application; they don't convey any license under any intellectual property
rights, or any other rights, belonging to ISAHAYA or a third party.
·ISAHAYA Electronics Corporation assumes no responsibility for any damage, or infringement of any
third party's rights, originating in the use of any product data, diagrams, charts or circuit application
examples contained in these materials.
·All information contained in these materials, including product data, diagrams and charts, represent
information on products at the time of publication of these materials, and are subject to change by
ISAHAYA Electronics Corporation without notice due to product improvements or other reasons.
It is therefore recommended that customers contact ISAHAYA Electronics Corporation or an authorized
ISAHAYA products distributor for the latest product information before purchasing product listed herein.
·ISAHAYA Electronics Corporation products are not designed or manufactured for use in a device orsystem that is used under circumstances in which human life is potentially at stake. Please contact
ISAHAYA Electronics Corporation or an authorized ISAHAYA products distributor when considering theuse of a product contained herein for any specific purposes, such as apparatus or systems fortransportation, vehicular, medical, aerospace, nuclear, or undersea repeater use.
·The prior written approval of ISAHAYA Electronics Corporation is necessary to reprint or reproduce inwhole or in part these materials.
·If these products or technologies are subject to the Japanese export control restrictions, they must beexported under a license from the Japanese government and cannot be imported into a country otherthan the approved destination.
Any diversion or re-export contrary to the export control laws and regulations of Japan and/or thecountry of destination is prohibited.
·Please contact ISAHAYA Electronics Corporation or authorized ISAHAYA products distributor for further
details on these materials or the products contained therein.

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