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SI88321ED-IS Datasheet(PDF) 1 Page - Silicon Laboratories

Part # SI88321ED-IS
Description  DUAL DIGITAL ISOLATORS WITH DC-DC CONVERTER
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI88321ED-IS Datasheet(HTML) 1 Page - Silicon Laboratories

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Rev. 0.5 7/15
Copyright © 2015 by Silicon Laboratories
Si88x2x
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Si88x2x
D UAL D IGITAL I SOLATORS WITH DC-DC C ONVERTER
Features
Applications
Safety Approval (Pending)
Description
The Si88xx integrates Silicon Labs’ proven digital isolator technology with an
on-chip isolated dc-dc converter that provides regulated output voltages of
3.3 or 5.0 V (or >5 V with external components) at peak output power levels
of up to 5 W. These devices provide up to two digital channels. The dc-dc
converter has user-adjustable frequency for minimizing emissions, a soft-start
function for safety, a shutdown option and loop compensation. The device
requires only minimal passive components and a miniature transformer.
The ultra-low-power digital isolation channels offer substantial data rate,
propagation delay, size and reliability advantages over legacy isolation
technologies. Data rates up to 100 Mbps max are supported, and all devices
achieve propagation delays of only 23 ns max. Ordering options include a
choice of dc-dc converter features, isolation channel configurations and a fail-
safe mode. All products are certified by UL, CSA, VDE, and CQC.
High-speed isolators with
integrated dc-dc converter
Fully-integrated secondary sensing
feedback-controlled converter with
dithering for low EMI
dc-dc converter peak efficiency of
83% with external power switch
Up to 5 W isolated power with
external power switch
Options include dc-dc shutdown,
frequency control, and soft start
Standard Voltage Conversion

3/5 V to isolated 3/5 V

24 V to isolated 3/5 V supported
Precise timing on digital isolators

0–100 Mbps

18 ns typical prop delay
Highly-reliable: 100 year lifetime
High electromagnetic immunity and
ultra-low emissions
RoHS compliant packages

SOIC-20 wide body

SOIC-16 wide body
Isolation of up to 5000 Vrms
High transient immunity of
100 kV/µs (typical)
AEC-Q100 qualified
Wide temp range

–40 to +125 °C
Industrial automation systems
Hybrid electric and electric
vehicles
Isolated power supplies
Inverters
Data acquisition
Motor control
PLCs, distributed control systems
UL 1577 recognized

Up to 5000 Vrms for 1 minute
CSA component notice 5A
approval
VDE certification conformity

VDE0884-10
CQC certification approval

GB4943.1
Patents pending
Ordering Information:
See page 36.
Pin Assignments
See page 31
1
2
3
4
5
6
18
20
19
17
16
15
GNDP
RSN
ESW
VDDA
GNDA
VREGA
GNDB
VDDB
VREGB
NC
VSNS
COMP
Si88620
7
8
14
13
NC
SH_FC
SS
NC
9
10
12
11
A1
A2
B1
B2
HF
XMTR
HF
XMTR
HF
RCVR
HF
RCVR


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