SI88240ED-IS Datasheet, PDF (1/48 Pages) Silicon Laboratories – QUAD DIGITAL ISOLATORS WITH DC-DC CONVERTER

Si88x4x
QUAD DIGITAL ISOLATORS WITH DC-DC CONVERTER
Features
 High-speed isolators with
 Highly-reliable: 100 year lifetime
integrated dc-dc converter
 High electromagnetic immunity and
 Fully-integrated secondary sensing ultra-low emissions
feedback-controlled converter with  RoHS compliant packages
dithering for low EMI
SOIC-20 wide body
 dc-dc converter peak efficiency of SOIC-24 wide body
83% with external power switch  Isolation of up to 5000 Vrms
 Up to 5 W isolated power with  High transient immunity of
external power switch
100 kV/µs (typical)
 Options include dc-dc shutdown,  AEC-Q100 qualified
frequency control, and soft start  Wide temp range
 Standard Voltage Conversion
–40 to +125 °C
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
Applications
 Industrial automation systems
 Hybrid electric and electric
vehicles
 Isolated power supplies
 Inverters
 Data acquisition
 Motor control
 PLCs, distributed control systems
Safety Approval (Pending)
 UL 1577 recognized
Up to 5000 Vrms for 1 minute
CSA component notice 5A
approval
 VDE certification conformity
VDE 0884-10
 CQC certification approval
GB4943.1
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 four digital channels. The dc-dc
converter has user-adjustable frequency for minimizing emissions, a soft-start
function for safety, a shut-down 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.
Ordering Information:
See page 38.
Pin Assignments
See page 33
GNDP 1
VSW 2
VDDP 3
VDDA 4
GNDA 5
SH 6
A1 7
A2 8
A3 9
A4 10
HF
XMTR
HF
RCVR
HF
XMTR
HF
RCVR
HF
XMTR
HF
RCVR
HF
XMTR
HF
RCVR
Si88240
Patents pending
20 GNDB
19 VDDB
18 DNC
17 NC
16 VSNS
15 COMP
14 B1
13 B2
12 B3
11 ^B4
Preliminary Rev. 0.6 7/15
Copyright © 2015 by Silicon Laboratories
Si88x4x
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.