ISOW7840 Datasheet, PDF (1/38 Pages) Texas Instruments – High-Performance, 5000-VRMS Reinforced Quad-Channel Digital Isolators With Integrated High-Efficiency, Low-Emissions DC-DC Converter

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ISOW7840, ISOW7841, ISOW7842, ISOW7843, ISOW7844
SLLSEY2 – MARCH 2017
ISOW784x High-Performance, 5000-V_RMS Reinforced Quad-Channel Digital Isolators With
Integrated High-Efficiency, Low-Emissions DC-DC Converter
1 Features
•1 Integrated High-Efficiency DC-DC Converter With
On-Chip Transformer
• 3-V to 5.5-V Wide Input Supply Range
• Regulated 5-V or 3.3-V Output
• Up to 0.65-W Output Power
• 5 V to 5 V; 5 V to 3.3 V: Available Load Current ≥
130 mA
• 3.3 V to 3.3 V: Available Load Current ≥ 75 mA
• Soft-Start to Limit Inrush Current
• Overload and Short-Circuit Protection
• Thermal Shutdown
• Default Output: High and Low Options
• Signaling Rate Up to 100 Mbps
• Low Propagation Delay: 13 ns Typ (5-V Supply)
• High CMTI: ±100 kV/µs Minimum
• Robust Electromagnetic Compatibility (EMC)
– System-Level ESD, EFT, and Surge Immunity
– Low Emissions
• 16-pin Wide SOIC Package
• Extended Temperature Range: –40°C to +125°C
• Safety-Related Certifications:
– 7071-V_PK Reinforced Isolation per DIN V VDE
V 0884-10 (VDE V 0884-10): 2006-12
– 5000-V_RMS Isolation for 1 Minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 60601-1 End Equipment
Standards
– CQC Approval per GB4943.1-2011
– TUV Certification According to EN 60950-1
and EN 61010-1
– All Agency Certifications are Planned
3 Description
The ISOW784x is a family of high-performance,
quad-channel reinforced digital isolators with an
integrated high-efficiency power converter. The
integrated DC-DC converter provides up to 650 mW
of isolated power at high efficiency and can be
configured for various input and output voltage
configurations. Therefore these devices eliminate the
need for a separate isolated power supply in space-
constrained isolated designs.
The ISOW784x family of devices provide high
electromagnetic immunity and low emissions while
isolating CMOS or LVCMOS digital I/Os. The signal-
isolation channel has a logic input and output buffer
separated by a silicon dioxide (SiO₂) insulation
barrier, whereas, power isolation uses on-chip
transformers separated by thin film polymer as
insulating material. Various configurations of forward
and reverse channels are available. If the input signal
is lost, the default output is high for the ISOW784x
devices and low for the devices with the F suffix (see
the Device Features).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ISOW7840
ISOW7841
ISOW7842
ISOW7843
ISOW7844
SOIC (16)
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Isolation Transformer
VCC
DC-DC
Primary
DC-DC
Secondary
VISO
2 Applications
• Industrial Automation
• Motor Control
• Grid Infrastructure
• Medical Equipment
• Test and Measurement
1
VSI
VSO
Isolation Capacitor
INx
OUTx
GNDI
GNDO
V_CC is the primary supply voltage
referenced to GND1. V_ISO is the isolated
supply voltage referenced to GND2.
V_SI and V_SO can be either V_CC or V_ISO
depending on the channel direction.
V_SI is the input-side supply voltage
referenced to GNDI and V_SO is the output-
side supply voltage referenced to GNDO.
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.