NIRSP31

Value line Triple-Channel Digital Isolators

With Integrated DC to DC Converter

Datasheet (EN) 0.4

Page 1

Product Overview

The NIRSP31 device is value line triple-channel digital

isolators with integrated isolated DC-DC converter. The

isolated DC-DC converter provide up to 300mW output

power use on chip transformer. The feedback PWM

signal is sent to primary side by a digital isolator based on

Novosense capacity isolation technology. The high

integrated solution can help to simplify system design and

improve reliability. The NIRSP31 device is safety

certified by UL1577 support 2kVrms insulations

withstand voltages, while providing high electromagnetic

immunity and low emissions. The data rate of the

NIRSP31 is up to 20Mbps, and the common-mode

transient immunity (CMTI) is up to 50kV/us. The

NIRSP31 devices provide 5V to 5V, 5V to 3.3V

conversion mode, the output voltage can be set by SEL

pin.

Key Features

 Up to 2000V

rms

Insulation voltage for NIRSP31

 Power supply voltage: 4.75V to 5.25V

 support 60mA load current

 Over current and over temperature protection



Date rate: DC to 20Mbps



High CMTI: 50kV/us

 Propagation delay: <50ns



High system level EMC performance:

Enhanced system level ESD, EFT, Surge immunity

 Operation temperature: -40℃~85℃



RoHS-compliant packages: LGA-18

Applications

 Industrial Battery Management System



Industrial automation system



Isolated SPI, RS232, RS485

 General-purpose multichannel isolation

Device Information

Part Number

Package

Body Size

NIRSP31-DLARR

LGA 18

4.00 × 5.00mm

Functional Block Diagrams

Figure 1. NIRSP31 Block Diagram

NIRSP31

Datasheet (EN) 0.4

Page 2

INDEX

1. PIN CONFIGURATION AND FUNCTIONS

.......................................................................................................................................

2. ABSOLUTE MAXIMUM RATINGS

..................................................................................................................................................

3. RECOMMENDED OPERATING CONDITIONS

.................................................................................................................................

4. THERMAL INFORMATION

.............................................................................................................................................................

5. SPECIFICATIONS

............................................................................................................................................................................

5.1. ISOLATED DC/DC CONVERTER STATIC SPECIFICATIONS

.....................................................................................................................

5.2. DIGITAL ISOLATOR ELECTRICAL CHARACTERISTICS

.............................................................................................................................

5.3. TYPICAL PERFORMANCE CHARACTERISTICS

.....................................................................................................................................

5.4. PARAMETER MEASUREMENT INFORMATION

...................................................................................................................................

6. HIGH VOLTAGE FEATURE DESCRIPTION

.......................................................................................................................................

6.1. INSULATION AND SAFETY RELATED SPECIFICATIONS

..........................................................................................................................

7. FUNCTION DESCRIPTION

..............................................................................................................................................................

7.1. DEVICE FUNCTIONAL MODES

.......................................................................................................................................................

7.2. EMI CONSIDERATIONS

................................................................................................................................................................

7.3. OUTPUT SHORT AND OVER TEMPERATURE PROTECTION

...................................................................................................................

8. APPLICATION NOTE

.......................................................................................................................................................................

8.1. TYPICAL APPLICATION

..................................................................................................................................................................

8.2. PCB LAYOUT

............................................................................................................................................................................

9. PACKAGE INFORMATION

............................................................................................................................................................

10. ORDER INFORMATION

..............................................................................................................................................................

11. DOCUMENTATION SUPPORT

....................................................................................................................................................

12. TAPE

ND REEL INFORMATION

................................................................................................................................................

13. REVISION HISTORY

....................................................................................................................................................................