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Home  Product Technical Articles   ISO8200B a galvanic isolated 8-channel driver:Datasheet, Pinout, and Applications[FAQ]

ISO8200B a galvanic isolated 8-channel driver:Datasheet, Pinout, and Applications[FAQ]

Author: William
Date: 27 Jul 2022
 329
ISO8200B Block Diagram

ISO8200B Description

ISO8200B Features

ISO8200B Applications

ISO8200B Block Diagram

ISO8200B Pinout

ISO8200B Functional description

ISO8200B Parallel interface

ISO8200B Direct control mode

ISO8200B Synchronous control mode

ISO8200B packaging information

ISO8200B Datasheet

ISO8200B FAQ

ISO8200B Description

A galvanically separated 8-channel driver with a very low supply current is the ISO8200B. There are two separate galvanic separated voltage domains in it (Vcc for the power stage and Vdd for the digital stage). Other incorporated features include reset for immediate power output termination, undervoltage shutdown with hysteresis, and loss of GND protection.

With one side linked to ground, IC is designed to drive any form of load. The device is protected from overload and short-circuit by active channel current restriction, thermal shutdown (independent for each channel), and automated restart. When the IC temperature drops below a reset threshold during overload conditions, the channel in question is automatically turned off and back on if the junction temperature exceeds the threshold. The overloaded channel is shut off if this condition causes case temperature to above the TCR limit threshold, and it only turns back on when junction and case temperatures reach the reset levels. Channels that aren't overwhelmed keep running properly. An OR-wired nonlatched common FAULT indication that signals the channel OVT is provided by an internal circuit. The FAULT pin is an open-drain active low fault indication pin.

 

ISO8200B Features

  • Parallel input interface
  • Direct and synchronous control mode
  • High common mode transient immunity
  • Output current: 0.7 A per channel
  • Short-circuit protection
  • Channel over temperature protection
  • Thermal independence of separate channels
  • Common output disable pin
  • Case over temperature protection
  • Loss of GNDcc and Vcc protection
  • Under voltage shutdown with auto-restart and hysteresis
  • Over voltage protection (Vcc clamping)
  • Very low supply current
  • Common fault open-drain output
  • 5 V and 3.3 V TTL/CMOS compatible I/Os
  • Fast demagnetization of inductive loads
  • Reset function for IC output disable
  • ESD protection
  • IEC 61000-4-2, IEC 61000-4-4, IEC 61000-4-5 and IEC 61000-4-8 compliant
  • UL1577 certification
  •  

 

ISO8200B Applications

  • Programmable logic control
  • Industrial PC peripheral input/output
  • Numerical control machines
  • Drivers for all types of loads (resistive, capacitive, inductive)

 

ISO8200B Block Diagram

ISO8200B Block Diagram

 

ISO8200B Pinout

ISO8200B Pinout

 

ISO8200B Functional description

  • ISO8200B Parallel interface
  • ISO8200B Direct control mode
  • ISO8200B Synchronous control mode

 

ISO8200B Parallel interface

Three interfacing signals are provided by the smart parallel interface integrated into the ISO8200B, which a microcontroller can simply manage. The input buffer that stores the value of the channel inputs is enabled by the LOAD signal. The SYNC signal controls the synchronization between the channel outputs on the isolated side and the low voltage side by copying the input buffer value into the transmission buffer. The channel outputs are enabled by the OUT EN signal. The configuration of the channel outputs is updated with a refresh frequency by an internal refresh signal. When LOAD is high, this signal can be turned off by driving the SYNC input low. SYNC and LOAD pins can function in synchronous control mode (SCM) or direct control mode (DCM) (SCM).

 

ISO8200B Direct control mode

The device operates in direct control mode when the same signal is applied to the SYNC and LOAD inputs (DCM). The SYNC/LOAD signal functions in DCM as an active low input enable:

  • when the signal is high, the current output configuration is kept regardless the input values
  • when the signal is low, each channel input directly drives the respective output

The channel outputs are always driven directly by the inputs in this mode of operation, with the exception of when OUT EN is low, which can be achieved by shorting both signals to the digital ground (outputs disabled).

 

ISO8200B Synchronous control mode

The device can function in synchronous control mode when the SYNC and LOAD inputs are separately driven (SCM). The SCM is used to drive all of the outputs of various devices simultaneously and to lessen output jitter. The SYNC signal is high while the LOAD signal is driven down in SCM to update the input buffer. The SYNC signal is forced low for at least tSYNC while the LOAD signal is increased (SCM). Any pending communication between the isolated side and low voltage side is finished during this time, and the internal refresh is turned off. The channel output configuration is modified in accordance with the input configuration when the SYNC signal is raised. The maximum jitter of the channel outputs is tjitter if the tSYNC(SCM) limit is reached (SCM). When multiple devices use the same SYNC signal, all outputs change at once with a maximum jitter that is correlated with the maximum delay and jitter for a single device.

 

ISO8200B packaging information

ISO8200B packaging information(1)

ISO8200B packaging information(2)

 

ISO8200B Datasheet

The below is the Datasheet about ISO8200B:

ISO8200B Datasheet

 

ISO8200B FAQ

What is the ISO8200B?

The ISO8200B is an 8-channel driver with galvanically isolated channels and a very low supply current. It contains two distinct galvanically separated voltage zones (Vcc for the power stage and Vdd for the digital stage). Reset for immediate power output termination, undervoltage shutdown with hysteresis, and loss of GND protection are further features that have been implemented.

 

What can the ISO8200B be used for?

It can be applied to Programmable logic control and Industrial PC peripheral input/output.

 

How many pins of the ISO8200B?

36 pins.

Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
(USD)
ISO8200BTR ISO8200BTR Company:STMicroelectronics Remark:Power Switch/Driver 1:1 700mA PowerSO-36 Package:36-BSSOP (0.433", 11.00mm Width) Exposed Pad
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $11.23000
10+: $10.14000
25+: $9.66880
100+: $8.39530
250+: $8.01800
600+: $7.78663
Inquiry

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