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Silicon Laboratories

Si88620 Datasheet Preview

Si88620 Datasheet

DUAL DIGITAL ISOLATORS

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Si88x2x
DUAL 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-16 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
VDE0884-10
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 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.
Ordering Information:
See page 36.
Pin Assignments
See page 31
GNDP 1
RSN 2
ESW 3
VDDA 4
GNDA 5
VREGA 6
SH_FC 7
SS 8
A1 9
HF
XMTR
HF
RCVR
A2 10 HF
XMTR
HF
RCVR
Si88620
Patents pending
20 GNDB
19 VDDB
18 VREGB
17 NC
16 VSNS
15 COMP
14 NC
13 NC
12 B1
11 B2
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.




Silicon Laboratories

Si88620 Datasheet Preview

Si88620 Datasheet

DUAL DIGITAL ISOLATORS

No Preview Available !

TABLE OF CONTENTS
Si88x2x
Section
Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.1. Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.2. Digital Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.3. DC-DC Converter Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.4. Transformer Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3. Digital Isolator Device Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1. Device Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3.2. Undervoltage Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3. Layout Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4. Fail-Safe Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.5. Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6. Package Outline: 20-Pin Wide Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7. Land Pattern: 20-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
8. Package Outline: 16-Pin Wide Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9. Land Pattern: 16-Pin Wide-Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10. Top Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.1. Si88x2x Top Marking (20-Pin Wide Body SOIC) . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.2. Top Marking Explanation (20-Pin Wide Body SOIC) . . . . . . . . . . . . . . . . . . . . . . . 43
10.3. Si88x2x Top Marking (16-Pin Wide Body SOIC) . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10.4. Top Marking Explanation (16-Pin Wide Body SOIC) . . . . . . . . . . . . . . . . . . . . . . . 44
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Rev. 0.5
2


Part Number Si88620
Description DUAL DIGITAL ISOLATORS
Maker Silicon Laboratories
Total Page 30 Pages
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