PDE-3063-0

ECN3063

6.

Standard Application

Component

Recommended Value

Usage

Remark

C0

More than 0.22

µF

for inner power

supply(VB).

stress voltage is VB

C1,C2

0.5

µF ± 20%

for charge pump

stress voltage is VCC

D1,D2

Hitachi DFG1C6 (glass mold)

Hitachi DFM1F6(resin mold)

or considerable parts

for charge pump

600V/1.0A

trr

≤100ns

CTR

1800 pF

± 5%

for clock

Note 1.

RTR

22 k

Ω ± 5%

for clock

Note 1.

Rs

Note.2

Overcurrent limit

Note 1.

Clock frequency is determined approximately by next equation.

Floating capacitance of PCB must be considered.

At Recommended Value of CR, the error factor of IC is about 10%.

fclock = -1 / (2C*R*Ln(1-3.5/5.5))

; Ln is natural logarithm

= 0.494 / (C*R)

(Hz)

Note 2.

Current is limited by the following equation.

IO = Vref / Rs

(A)

Clock

GH1

GL

VTR

CR

UT

VT

WT

UB

VB

WB

VCC

VS2

CL

C-

C+

CB

D2

D1

C1

C2

+

+

-

-

RS

CTR

RTR

VB

MU

MV

MW

VCC(15V)

Vref

VS

Top Arm

Driver

Pulse Generator

VB supply

Charge Pump

Microprocessor

Motor

VS1

GH2

C0

CLOCK

RS

Vref

0.5V

Latch

+

–

Filter

1

µs

R

S

Bottom Arm

Driver