Datasheet > PS10

PS10

更新时间： 2024-11-28 06:05:11

品牌	Logo	应用领域
超科 - SUPERTEX		/
页数	文件大小	规格书
13页	265K
描述
Quad Power Sequencing Controller

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中文翻译

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数据手册

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PS10 数据手册

PS10 - Active H^Pig^S1h^0/PS11

PS11 - Active Low

Initial Release

Quad Power Sequencing Controller

Features

Description

ꢀ

Sequencing of Four or More* Supplies, ICs, or Sub-

Many of today’s high performance FPGA’s, Microproces-

sors, DSP and industrial/embedded subsystems require

sequencing of the input power. Historically this has been

accomplished: i) discretely using comparators, references

& RC circuits; ii) using expensive programmable control-

lers; or iii) with low voltage sequencers requiring resistor

drop downs and several high voltage optocoupler or level

shift components.

systems

ꢀ

Independently Programmable Delays Between Open

Drain PWRGD Flags (5ms to 200ms)

±10V to ±90V Operation

ꢀ

Tracking in Combination with Schottky Diodes

Input Supervisors Including:

o UV/OV Lock Out/Enable

o Power-On-Reset (POR)

The PS10/11 saves board space, improves accuracy,

eliminates optocouplers or level shifts and reduces overall

component count by combining four timers, programmable

input UV/OV supervisors, a programmable POR and four

90V open drain outputs. A high reliability, high voltage,

junction isolated process allows the PS10/11 to be con-

nected directly across the high voltage input rails.

ꢀ

Low Power Consumption, 0.4mA Supply Current

Small SO-14 Package

*By Daisy-Chaining PS10/11’s

Applications

The power-on-reset interval (POR) may be programmed

by a capacitor on Cramp. To sequence additional sys-

tems, PS10/11 may be daisy chained together. If at any

time the input supply falls outside the UV/OV detector

range the PWRGD outputs will immediately become IN-

ACTIVE. Down sequencing may be accomplished with

additional components (see page 11).

ꢀ

Power Supply Sequencing

-48V Telecom and Networking Distributed Systems

-24V Cellular and Fixed Wireless Systems

-24V PBX Systems

+48V Storage Systems

FPGA, Microprocessor Tracking

Industrial/Embedded System Timing/Sequencing

High Voltage MEMs Driver’s Supply Sequencing

High Voltage Display Driver’s Supply Sequencing

The PS10/PS11 is available in a space saving SO-14

package.

Typical Application Circuit

Waveform

(49.9k pull-up on PS11 PWRGD pins)

GND or +48V

/EN

DC/DC

CONVERTER

+12V

COM

487K

V_IN

PWRGD-D / PWRGD-D

PWRGD-C / PWRGD-C

PWRGD-B / PWRGD-B

PWRGD-A / PWRGD-A

6.81K

9.76K

/EN

DC/DC

CONVERTER

+5V

PS10/PS11

V_EE

COM

Ramp

/EN

DC/DC

CONVERTER

+3.3V

COM

10nF

RTB

RTC

RTD

/EN

DC/DC

CONVERTER

+2.5V

COM

-48V or GND

Notes:

1. Under Voltage Shutdown (UV) set to 37V.

2. Over Voltage Shutdown (OV) to 57.8V.

Relative to Negative Rail

A051204

Supertex, Inc. • 1235 Bordeaux Drive, Sunnyvale, CA 94089 • Tel: (408) 222-8888 • FAX: (408) 222-4895 • www.supertex.com

12 3 4 5 6 7...13

中文翻译

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