Datasheet > TPS37_V01

TPS37_V01

更新时间： 2024-09-17 02:52:11

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描述
TPS37 Wide VIN 65 V Dual Channel Overvoltage & Undervoltage (OV & UV) Detector with Programmable Sense and Reset Delay Function

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TPS37_V01 数据手册

TPS37

SNVSBJ1D – OCTOBER 2020 – REVISED DECEMBER 2021

TPS37 Wide V_IN65 V Dual Channel Overvoltage & Undervoltage (OV & UV) Detector

with Programmable Sense and Reset Delay Function

1 Features

3 Description

•

Wide supply voltage range: 2.7 V to 65 V

SENSE and RESET pins are 65 V graded

Low quiescent current: 1 µA (typical)

Flexible and wide voltage threshold options

Table 13-1

– 2.7 V to 36 V (1.5% maximum accuracy)

– 800 mV option (1% maximum accuracy)

Built-in hysteresis (V_HYS)

– Percentage options: 2% to 13% (1% steps)

– Fixed options: V_TH< 8 V = 0.5 V, 1 V, 1.5 V,

2 V, 2.5 V

Programmable reset time delay

– 10 nF = 12.8 ms, 10 μF = 12.8 s

Programmable sense time delay

– 10 nF = 1.28 ms, 10 μF = 1.28 s

Manual Reset (MR) feature

The TPS37 is a family of wide input range and

low quiescent current window supervisors for fast

detection of overvoltage (OV) and undervoltage

(UV) conditions. Each device includes a precision

internal reference, two independent and configurable

voltage comparators and integrated resistor dividers.

The TPS37 can be connected directly to and

monitor 12 V / 24 V supply rails in a variety of

industrial applications including factory automation,

motor drives, building automation and others. Built-in

hysteresis on the SENSE pins prevents false reset

signals when monitoring a supply voltage rail.

•

The separate VDD and SENSE pins allow

redundancy sought by high-reliability systems.

SENSE is decoupled from VDD and can monitor

higher and lower voltages than VDD. Optional use

of external resistors are supported by the high

impedance input of the SENSE pins. CTSx and CTRx

pins allow delay adjustability on the rising and falling

edges of the RESET signals. Also, CTSx functions

as a debouncer by ignoring voltage glitches on the

monitored voltage rails; CTRx operates as a manual

reset (MR) that can be used to force a system reset.

•

Output reset latching feature

Output topology: Open-Drain or Push-Pull

2 Applications

•

Analog input module

CPU (PLC controller)

Servo drive control module

Servo drive power stage module

Servo drive functional safety module

HVAC valve and actuator control

TPS37 is available in a WSON or SOT-23 package.

The central pad is non-conductive to increase the

creepage between VDD and GND per guidelines in

IEC60664. TPS37 operates over –40°C to +125°C T_A.

Device Information

PART NUMBER

TPS37

PACKAGE ⁽¹⁾

WSON (10) (DSK)

SOT-23 (14) (DYY) ⁽²⁾

BODY SIZE (NOM)

2.5 mm × 2.5 mm

4.1 mm × 1.9 mm

TPS37

(1) For package details, see the mechanical drawing addendum

at the end of the data sheet.

(2) Product Preview

0.95

0.90

0.85

0.80

0.75

0.70

0.65

Power Switch

DC/DC

24V

VDD

SENSE1

SENSE2

RESET1

RESET2

MCU

TPS37

LDO

0.60

-40^oC

25^oC

0.55

0.50

125^oC

SENSE1 = Overvoltage monitor

SENSE2 = Undervoltage monitor

10 15 20 25 30 35 40 45 50 55 60 65

Supply Voltage (V)

Typical I_DDvs V_DD

Typical Application Circuit

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...48

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