HV430 Supertex, Inc., HV430 Datasheet

HV430

Manufacturer Part Number

HV430

Description

High Voltage Ring Generator

Manufacturer

Supertex, Inc.

Datasheet

1.HV430.pdf (8 pages)

Current page: 1 of 8
Download datasheet (472Kb)

Ordering Information

Features

Applications

Absolute Maximum Ratings

02/25/03

Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability

indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to

workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the

Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.

Storage temperature

Power dissipation

PP1

PP2

NN1

NN2

105Vrms ring signal

Output over current protection

5.0V CMOS logic control

Logic enable/disable to save power

Adjustable deadband in single-control mode

Power-on reset

Fault output for problem detection

Line access cards

Set-top/Street box

, logic supply

Operating Voltage

, positive high voltage supply

, positive gate voltage supply

, negative high voltage supply

, negative gate voltage supply

– V

NN1

PP1

325V

, power supply voltage

-V

NN1

Package Options

HV430WG

High Voltage Ring Generator

SOW-20

-65°C to +150°C

600mW

+220V

+340V

-220V

+7.5V

General Description

The Supertex HV430 is a high voltage PWM ring generator

integrated circuit. The high voltage outputs, V

are used to drive the gates of external high voltage P-channel

and N-channel MOSFETs in a push-pull configuration. Over

current protection is implemented for both the P-channel and N-

channel MOSFETs. External sense resistors set the over-cur-

rent trip point.

The RESET input functions as a power-on reset when connected

to an external capacitor.

The FAULT output indicates an over-current condition and is

cleared after 4 consecutive cycles with no overcurrent condition.

A logic low on RESET or ENABLE clears the FAULT output. It is

active-low and open-drain to allow wire OR’ing of multiple

drivers.

on the external P-channel MOSFET. Similarly, a logic high on N

will turn on the external N-channel MOSFET. Lockout circuitry

prevents the N and P switches from turning on simultaneously.

A pulse width limiter restricts pulse widths to no less than 100-

200ns.

For applications where a single control input is desired, the

MODE pin should be connected to SGND. The PWM control

signal is then input to the N

the control logic ensures break-before-make on the outputs,

thus avoiding cross conduction on the high voltage output during

switching. A logic high on N

MOSFET on and the N-Channel off, and vice versa. The IC can

be powered down by applying a logic low on the ENABLE pin,

placing both external MOSFETs in the off state.

gate

when the MODE pin is at logic high. A logic high on P

and N

gate

are controlled independently by logic inputs P

pin. A user-adjustable deadband in

will turn the external P-Channel

HV430

PGATE

and V

will turn

NGATE

and

Related parts for HV430

HV430 Summary of contents

Page 1

... Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website. General Description The Supertex HV430 is a high voltage PWM ring generator integrated circuit. The high voltage outputs, V are used to drive the gates of external high voltage P-channel and N-channel MOSFETs in a push-pull configuration ...

Page 2

... NN1 NN1 Min Typ Max V V PP2 PP1 12.5 12 100 150 200 300 V -0.85 V -1.0 V -1.15 PP1 PP1 PP1 150 2 HV430 Conditions load V and V switching at 100kHz OUTP OUTN P =N =0V, R =18kΩ load V and V switching at 100kHz OUTP OUTN P =N =0V, R =18kΩ ...

Page 3

... cycles 105 140 175 ns 300 ns 300 HV430 Unit Conditions V No load on V Ngate Ω I =80mA OUT I =-80mA Ω OUT ns C =1.0nF load ns C =1.0nF load ns ns mode Conditions V =5. ...

Page 4

... Trip Up P Translator Driver N Up Driver Translator Down Current Translator Trip SIG PWR V NN2 GND GND Regulator V NN2 4 External P-Channel MOSFET OFF ON OFF OFF ON OFF OFF OFF V PP1 V PP1 R sense V PSEN V PGATE NGATE V NSEN R sense V NN1 V NN1 HV430 Ringer Output ...

Page 5

... OUT OFF OUT OFF t P-Ndelay t Prise t Pfall t t N-Pdeadband P-Ndeadband t t Nfall Nrise t Pdelay(off) t Ppulse(min Prise Pfall t Ndelay(on) t Npulse(min) t Nrise 5 HV430 V DD GND V PP2 V PP1 V NN2 V NN1 V DD GND V PP2 V PP1 V DD GND t Ndelay(off) V NN2 V NN1 t Nfall ...

Page 6

... RST(ON Off OUT OFF ON Off N OUT OFF Switching t EN(ON) Off Switching Off Switching Switching Switching Switching GND V DD GND t EN(OFF) V PP2 Off V PP1 V NN2 Off V NN1 V RESET(ON) V RESET(OFF) GND V DD GND t RST(OFF) V PP2 Off V PP1 V NN2 Off V NN1 HV430 ...

Page 7

... FAULT Timing 1 ENABLE or RESET OUT OFF ON N OUT OFF Over N SENSE FAULT w/ext pull-up GND t FAULT(HOLD) Note: N overcurrent shown. P sense 7 HV430 V DD GND V DD GND V PP2 V PP1 V NN2 V NN1 ENABLE or RESET clears FAULT immediately operates identically. sense ...

Page 8

... V . NN1 controls both outputs in a complementary manner PP2 V PP1 V PSEN V PGATE N/C N/C V NGATE V NSEN V NN1 V NN2 8 and P independently control OUT activated. Remains Psen Nsen 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 222-8888 • FAX: (408) 222-4895 www.supertex.com HV430 02/25/03 ...

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