Bandwidth
:
Mounting Style
: SMD/SMT
Packaging
: Tube
Operating Supply Voltage
: 5 V
Operating Temperature Range
: + 85 C
Input Offset Voltage
: 3 mV
Common Mode Rejection Ratio (Min)
: 140 dB
Supply Current
: 20 mA
Package / Case
: SO-16
Features: • Output Voltage Directly Compatible with A/D Converters (0 V to VREF)
• Fast (3 ms) Short Circuit Detection with Transient Fault Rejection
• Absolute Value Signal Output for Overload Detection
• 1 mV/ Offset Change vs. Temperature
• SO-16 Package
• -40 to +85 Operating Temperature Range
• 25 kV/ms Isolation Transient Immunity
• Regulatory Approvals (Pending): UL, CSA, VDE 0884 (891 Vpeak Working Voltage)
Specifications
|
Parameter |
Symbol |
Min. |
Max. |
Units |
Note |
| Storage Temperature |
TS |
-55 |
125 |
|
|
| Operating Temperature |
TA |
-40 |
100 |
|
| Supply Voltages |
VDD1, VDD2 |
0.0 |
5.5 |
A |
4 |
| Steady-State Input Voltage |
|
| 2 Second Transient Input Voltage |
-2.0 |
|
| Output Voltage |
VIN+, VIN- |
-6.0 |
VDD1 + 0.5 |
|
| Absolute Value Output Voltage |
VOUT |
-0.5 |
VDD2 + 0.5 |
|
| Reference Input Voltage |
ABSVAL |
-0.5 |
VDD2 + 0.5 |
|
|
VREF |
0 |
VDD2 + 0.5 V |
5 |
| Reference Input Current |
IREF |
|
20 |
mA |
|
| Output Current |
IVOUT |
|
20 |
|
| Absolute Value Current |
IABSVAL |
|
20 |
|
| FAULT Output Current |
IFAULT |
|
20 |
|
| Input IC Power Dissipation |
PI |
|
200 |
mW |
|
| Output IC Power Dissipation |
PO |
|
200 |
|
| Solder Reflow Temperature Profile |
See Package Outline Drawings section |
DescriptionThe HCPL-788J isolation amplifier is designed for current sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-788J. A larger analog output voltage is created on the other side of the HCPL-788J's optical isolation barrier. The output voltage is proportional to the motor current and can be connected directly to a singlesupply A/D converter. A digital over-range output (FAULT) and an analog rectified output (ABSVAL) are also provided. The wire OR-able over-range output (FAULT) is useful for quick detection of short circuit con-Figure 1. Current Sensing Circuit.
ditions on any of the motor phases. The wire-OR-able rectified output (ABSVAL), simplifies measurement of motor load since it performs polyphase rectification. Since the common-mode voltage swings several hundred volts in tens of nanoseconds in modern electronic motor drives, the HCPL-788J was designed to ignore very high common-mode transient slew rates (10 kV/ms).
Parameters: | Technical/Catalog Information | HCPL-788J |
| Vendor | Avago Technologies US Inc. |
| Category | Isolators |
| Type | Current Sensor |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (7.5mm Width) |
| Packaging | Tube |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | HCPL 788J
HCPL788J
516 1145 5 ND
51611455ND
516-1145-5
|
HCPL-788J Data Sheet
