PDE-3061-0

ECN3061

6.

Standard Application

No.

Component

Recommended Value

Usage

Remark

1

C0

More than 0.22

µF

for smoothing VB

(VB; internal power supply)

The stress voltage is

8V.

2

C1,C2

1.0

µF ± 20%

for a charge pump

The stress voltage is

VCC.

3

D1,D2

Hitachi DFG1C4(glass mold)

Hitachi DFM1F4(resin mold)

or considerable parts

for a charge pump

400V/1A

≤100ns

4

CTR

1800 pF

± 5%

for an internal clock

Note 1.

5

RTR

22 k

Ω ± 5%

for an internal clock

Note 1.

Note 1.

The internal clock frequency is approximately determined by next equation.

At recommended value of CR, the error factor of IC is about 10%.

; Ln is natural logarithm.

= 0.494 / (C*R)

(Hz)

Clock

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

Upper Arm

Driver

Lower Arm

Driver

Pulse Generator

VB supply

Charge Pump

Microprocessor

Motor

Hall ICs

VS1

GH1