＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESFEATURESVLB517-01R>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 +/-40A(max)>Built in short circuit protection with soft shut down
>Electrical isolation voltage is 10.2kVrms (for 1 minute)>Fiber optic interface

TARGETED HVIGBT MODULES
VCES=4500V series up to 1500A class
VCES=3300V series up to 1800A class

Image photo

APPLICATIONS

Medium voltage inverter , HVDC infrastructure , Traction or Power supply etc.

OUTLINE◆Input side - Output side
Clearance : 37mm
Creepage : 37mm
◆CN2 - CN4
Clearance : 31mm
Creepage : 37mm

BLOCK DIAGRAM
CN1 VD

CN3 : Main output connector
CN4 : Sub connector
TP : Test Pad

VCC (TP3)

(TP7)
UVL
GND
(TP8)

Reg.
E (TP4)

DC‐AC

Ctrip
(C63)
VEE (TP5)C

DETECTReg.

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE

HFBR‐2522Z
FOT1

CN2

SHUT DOWNFAULT OUT

Vo1(TP1)
Vo2(TP2)

Rg_on

CN3

G

Rg_offE
RG5

GE

Fo(TP6)CN4

HFBR‐1523Z* There are not Rg_on and Rg_off at the initial state. So please solder the chosen resistors.
* The test pins on the test pad are not installed in mass production.

Jul.2022

1

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULES

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

SymbolParameterConditions

VD

Supply voltage

Between VD and GND

IOHP

Ratings

Unit

16

V-40

A40

A

Output peak current

Pulse width 3us

VisoIsolation voltage between
primary and secondary

Sine wave voltage 60Hz, for 1min

10200

Vrms

Tc

Case temperature

Surface temperature of output power MOSFET
on substrate

100deg CTopr

Operating temperature

No condensation allowable-40 ~ 85

deg CTstg

Storage temperature

No condensation allowable-40 ~ 85

deg C

IOLP

IdriveGate drive current

Gate average current

200mA

VC

Peak collector voltage

Peak terminal voltage of CN24500

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

UnitMinTypMaxRecommended range

14.5

1515.5

VSwitching frequency

Recommended range
It is limited by gate average current (max:200mA)--10kHz

Gate resistance

Recommended range (Total compound value)

0.1

--

Ω

Rs

Soft discharge resistor

Value of RG5, Recommended range

0-120

Ω

VOH

Plus bias output voltage

Idrive = 0 ~ 200mA

141516V

VOL

Minus bias output voltage

Idrive = 0 ~ 200mA-15-13-11VtPLH“L-H” propagation time

IF=30mA, Fiber length=50cm, C_load:0.57uF-TBD-ustPHL“H-L” propagation time

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

-TBD

-

usttimer

Timer

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 190V

-TBD

-

us

VSC

SC detect voltage

Collector voltage of IGBT

190

-

-

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

-

V

HOW TO CANCEL THE SHORT-CIRCUIT PROTECTION CIRCUIT
The short-circuit protection circuit of this product does not function when the connection of CN2 is open.

2

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESCONNECTION EXAMPLE1VLB517

HVIGBT Std. pkg.

Wire cable for collector sense

CN2

CN1
Input 15V
FOR1

FOT1

Optical fiber cablefor gate signal
Optical fiber cablefor fault output

CN4
CN3

Twist pair wire cablefor gate drive

CN3 : Main output connector
CN4 : Sub connector

CONNECTION EXAMPLE2Gate drive unit VLB517(High side)
Wire cable for gate drive*Less than 20cm (rough guide)

3.3kV or 4.5kV class HV100 pkg. (2 parallel)
Adaptor Unit
(VLB521)Gate drive unit VLB517(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.

3

＜Gate Drive Unit＞

PRELIMINARY

VLB517-01R
DRIVER FOR HVIGBT MODULESCONNECTION EXAMPLE3

Gate drive unit VLB517(High side)

3.3kV or 4.5kV class HV100 pkg. (4 parallel)

Wire cable for gate driveGate drive unit VLB517(Low side)
Wire cable for low sidecollector sense
Adaptor Unit
(VLB521)

Wire cable for high sidecollector sense

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

4

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE1( single connection1 of HV100 )CN1

VCC (TP3)UVL

Reg.
E (TP4)

DC‐AC

Ctrip
(C63)
VEE (TP5)

CN2

L/F

DETECTReg.

Vo1(TP1)
Vo2(TP2)

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE
SHUT DOWNFAULT OUT

Rg_on

CN3

CN2

Rg_off

321TLAC

321CN1

RG5

FOT1

VLB517-01R

Fo(TP6)

CN4

VLB521
CN1(Adaptor Unit)

VCC (TP3)UVLReg.
E (TP4)

DC‐ACCtrip(C63)
VEE (TP5)

CN2

L/F

DETECTReg.

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE

Vo1(TP1)
Vo2(TP2)

SHUT DOWNFAULT OUT

Rg_on

CN3

Rg_off

RG5

FOT1
Fo(TP6)

VLB517-01R

5CN4CN4321TLAC

321

CN3

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE2( single connection2 of HV100 )CN1

VCC (TP3)UVL

Reg.
E (TP4)

DC‐AC

Ctrip
(C63)
VEE (TP5)

CN2

L/F

DETECTReg.

Vo1(TP1)
Vo2(TP2)

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE
SHUT DOWNFAULT OUT

Rg_on

CN3

CN2

Rg_off

32
1

TLAC

321

CN1

RG5

FOT1

VLB517-01R

Fo(TP6)

CN4

VLB521
CN1(Adaptor Unit)

VCC (TP3)UVL

Reg.
E (TP4)

DC‐AC

Ctrip
(C63)
VEE (TP5)

CN2

L/F

DETECTReg.

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE

Vo1(TP1)
Vo2(TP2)

SHUT DOWNFAULT OUT

Rg_on

CN3

Rg_off

RG5

FOT1
Fo(TP6)

VLB517-01R

6CN4

CN4321TLAC

321CN3

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESAPPLICATION EXAMPLE3( 3 parallel connection of HV100 )CN1

VCC (TP3)UVL

Reg.
E (TP4)

DC‐ACCtrip(C63)
VEE (TP5)

CN2

L/F

DETECTReg.

Vo1(TP1)
Vo2(TP2)

LATCH & Timer

PRE
DRIVE

FOR1
INTER
FACE
SHUT DOWNFAULT OUT

Rg_on

CN3CN2

Rg_off

321TLAC

L/F

321

CN1

CN2321TLAC

L/F

321

CN1

CN2321TLAC

321CN1

RG5

FOT1

VLB517-01R

Fo(TP6)CN1

CN4

VLB521VLB521

Adaptor Unit

Adaptor Unit

Adaptor Unit

L/F

L/F

L/F

VLB521

VCC (TP3)UVL

Reg.
E (TP4)

DC‐AC

Ctrip
(C63)
VEE (TP5)CN2DETECTReg.

LATCH & Timer
PRE
DRIVE

FOR1
INTER
FACE
SHUT DOWNFAULT OUT

Vo1(TP1)
Vo2(TP2)

Rg_on

CN3

Rg_off

CN432
1

TLAC

RG5

FOT1
Fo(TP6)

VLB517-01R

CN47321CN3

CN4321TLAC

321CN3CN4321TLAC

321CN3

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

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 200mAIdrive: 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 IGBT
N: Parallel number of IGBT module

Gate charge-13V

Q2

Q1

DEFINITION OF CHARACTERISTICS
Switching operation

Operation of short circuit protection
IF(Primary)

30mA
IF
50%(Primary)

Vo1
(TP1)

0V
‐10V

VOH

Vo1
(TP1)

Vo2
(TP2)

Vo2
(TP2)

ttrip

ttimer0V
10V
Fo(TP6)

VOL
tPHL

tPLH

0V

Fault output(Primary)

Tested by
f=3kHz, Duty=50%

INTERFACE APPLICATION EXAMPLEVLB517

CN1 VD
VD
15V

5V

IF(30mA)

VCC (TP3)

(TP7)
UVL
GND
(TP8)

Reg.
E (TP4)

DC‐ACCtrip(C63)
VEE (TP5)

CN2

HFBR-1522Z etc.
LEDdrivecircuit

C

DETECTReg.

LATCH & Timer

FOR1

PRE
DRIVE

Gate signal

INTER
FACE

5V

Optical fiber cablefor gate signal

SHUT DOWNFAULT OUTHFBR‐2522Z
FOT1

Vo1
(TP1)
Vo2
(TP2)

Rg_on

CN3

Rg_off

G
E

RG5

G

4.7k

E

Fault output

Fo(TP6)

HFBR‐1523Z

0.1μF
HFBR-2523Z etc.
Optical fiber cablefor fault signal

8CN4

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULES

OPERATION OF PROTECTION CIRCUIT(1) In case the input gate signal is “ON” and the collector voltage
is high, this drive unit will recognize the circuit as short circuit
OPERATION FLOW ON DETECTING SHORT CIRCUIT
and reduce the gate voltage. Besides, put out fault signal (”L”)
which inform that protection circuit is operating at the same
STARTtime from Fo terminal (Test Pad6).
(2) The protection circuit reset and resort to ordinary condition
if input signal is “OFF” when the premised 1~2msec passed.
DETECTION OF( “OFF” period needs 10us or more )SHORT CIRCUIT(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.
The ttrip can be extended by adding a capacitor to C63 on unit.
(If needed C63, lough guide is 22~68pF)
GATE SHUTDOWNTIMER STARTLATCH & TIMER RESET SYSTEM IN SHORTOUTPUT FAULT SIGNAL
TIMER
CIRCUIT PROTECTION CIRCUIT
1 ~ 2ms
Once the short-circuit protection circuit starts, it shuts down
the gate output and keeps alarm output, causing the latchstatus. This status is canceled if the input signal is OFF
END OF TIMER
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 signal becomes OFF.
INPUT SIGNAL ISAs mentioned above, on the latch & timer reset system, theOFF
latch 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
CLEAR ALARM
input signals are received. For this reason, it is possible toENABLE OUTPUT
safely stop the entire equipment by sending error signals tothe microcomputer during this period to stop all gate signals.

TIMING CHART
IF(Primary)

VGE(IGBT)VCE(IGBT)

IC(IGBT)

VSC
Short-circuit
occurrence

Masked time (ttrip)
TimerFo(TP6)The latch status is canceled.
Fault output(Primary)

9＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESABOUT MOUNTING GATE RESISTORS FOR NORMAL SWITCHING

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 for normal switching.
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.
RG1

Drivecircuit

Vo1Vo2

CN3

RG2

GRG3

E

RG4

Layout pattern connection on substrate*Refer to next page: Gate resistor mount part (Initial is open)
Example 2

Example 1

Drivecircuit

Vo1

CN3

RG1
RG3

Drivecircuit

GE

Vo2

Vo1
Vo2

Rg_on RG1
Rg_off RG3

RG1
RG2

CN3

G

RG3

E

RG4

Rg_on RG1//RG2
Rg_off RG3//RG4

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)
Rb: Balance resistance value on adaptor unit
N: Parallel number of modules
Rg_on : Gate ON resistance value on VLB517
Rg_off : Gate OFF resistance value on VLB517

CN1 VD

VCC (TP3)

(TP7)
UVL
GND
(TP8)

E (TP4)Ctrip(C63)
VEE (TP5)CN2CDETECTReg.

LATCH & Timer

FOR1
INTER
FACE

HFBR‐2522Z
FOT1

Rg_onReg.

DC‐AC

PRE
DRIVENote)

SHUT DOWNFAULT OUT

Vo1(TP1)
Vo2(TP2)

CN3

GE
RG5GE

Fo(TP6)

HFBR‐1523Z

10Rg_offCN4

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

DRIVER FOR HVIGBT MODULESABOUT DISCHARGE RESISTOR FOR SOFT SHUT DOWNON ACTIVITY OF SHORT CIRCUIT PROTECTION
When the short circuit protection works, the soft gate shut down circuit works to suppress collector surge voltage of IGBT.
When short circuit protection circuit operates, the gate voltage descends slowly by the discharge circuit in dotted lineof following figure.
In this figure, main discharge resistor is RG5. But RG5 is not installed in this drive unit at the initial state.
So please solder the chosen resistor(1W class) certainly.
And please set RG5 by the following equation.
VCC
DETECTLATCH & Timer
PREDRIVE

INTER
FACE

CN2

Rg_on

SHUT DOWNFAULT OUTRin

Rg_offModule

RG5

CN4CN1

CN3VEE

RG5

Equivalent gate discharge circuit on
activity of short circuit protection

Please adjust RG5 value so that it may satisfy the next equation. ( Reference guide )C x R_discharge = 2 ~ 5 (usec)
C= N X (Q1+lQ2l) / (VCC+lVEEl)
R_discharge =RG5 + RG_off +Rin
NN: Parallel number of IGBT module* If single driving, N=1
Q1 : Gate charge at Vge=+15V (Read from data sheet of IGBT)
Q2 : Gate charge at Vge=-13V (Read from data sheet of IGBT)VCC : 15lVEEl : 13
R_discharge : Total discharge resistance for gate soft shut down on activity of short circuit protection
Rin: Inner gate resistance of IGBT module

Please confirm that off surge voltage at blocking short circuit current doesn't exceedmaximum rating of VCES by actual operation finally.

11

＜Gate Drive Unit＞

VLB517-01R

PRELIMINARY

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

CN3: 53259-0229 (Molex)

Pin No.

SignalPin No.

Signal1VD

1Emitter

2

GND

2

Gate

CN4: 53259-0229 (Molex)

CN2: 53259-0229 (Molex)
Pin No.

SignalPin No.

Signal1

Collector

1

Emitter2

Collector

2

Gate

CN2

Screw hole Φ3.5mm x 7

pin2
pin1

pin2

pin1
pin2 CN1

CN4 pin1
CN3

pin2
pin1

We recommend following parts or equivalent product for wire cable
HOUSINGTERMINAL

Maker

51067-0200

50217-8100Molex

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& washer
Screw& washer

Metallic caseSpacer made of the resin

12

＜Gate Drive Unit＞

PRELIMINARY

VLB517-01R
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 isminimal, 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.

Maximum
ratings

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 for
the terminal arrangement.

13

＜Gate Drive Unit＞

PRELIMINARY

VLB517-01R
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 be
exported 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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