HV9901_08 Просмотр технического описания (PDF) - Supertex Inc

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HV9901_08

Universal Relay Driver

Supertex Inc 

HV9901

Electrical Characteristics (TA = +25°C unless otherwise noted)

Sym Parameter

Min

Typ

Max

Units Conditions

tENI

Shutdown delay

Enable input voltage - High

VENI

Enable input voltage - Low

Enable input current - High

IENI

Enable input current - Low

-

50

100

ns

0.7VCC

-

VCC

V

0

-

0.3VCC

V

-

1.0

5.0

μA

-5.0

-1.0

-

μA

Polarity voltage - High

VPOL

Polarity voltage - Low

Polarity current - High

IPOL

Polarity current - Low

0.7VCC

-

0

-

-

1.0

-5.0

-1.0

VCC

0.3VCC

5.0

-

V

2.0V < VCC < 5.5V

V

μA

μA

Enable output voltage - High

VENO

Enable output voltage - Low

0.9VCC

-

VCC

V

0

-

0.1VCC

V

Enable Logic Truth Table

POL

ENI

ENO Gate Drive Output

Low

Low

High

High

Low

High

High

Low

High

Low

Low

High

VGT = Oscillating output, duty cycle depends on inductive load

VGT = Low, SYNC = High, oscillator shut down.

VGT = Oscillating output, duty cycle depends on inductive load

VGT = Low, SYNC = High, oscillator shut down.

Application Information

I PULL − IN

= VCS (HL )

RSENSE

VCS (HI ) = 833mV nom

VCS (LL )

=

VDD

1 + RHDa

R HDb

VDD = 9.0V nom

I HOLD

= VCS (LL )

RSENSE

( ) t PULL− IN

=−

RHDa

RHDb

CHD



ln1 −

VCS (HL

VCS (LL

)

)

− VDD

− VDD





fPWM

≈ 3.23kHz

+

21.8GHz

ROSC

⋅Ω

(valid for f pwm> 23kHz)

VCC

= 1.25V 1+

R FBa

R FBb





t PULL-IN

I PULL-IN

IHOLD

Time

Figure 1

● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com

4

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