Accurate motor current monitoring IC Broadcom HCPL-7520-500E with high common mode transient immunity
Product Overview
The HCPL-7520 is an isolated linear current sensing IC family specifically designed for current sensing in low-power electronic motor drives. It accurately monitors motor current by sensing the analog voltage drop across an external resistor and translating it into an output voltage across an optical isolation barrier. Engineered to reject high common-mode transient slew rates (up to 15 kV/s), it provides the precision and stability required for accurate motor current monitoring in noisy motor control environments, contributing to smoother motor control with reduced torque ripple. The HCPL-7520 also serves general analog signal isolation applications.
Product Attributes
- Brand: Avago Technologies
- Certifications: UL 1577 (3750 Vrms/1 min.), CSA, IEC/EN/DIN EN 60747-5-2 (Option 060 only)
- Compliance: RoHS 6 fully compliant options available
Technical Specifications
| Model | Description | Key Features | Package | Safety Approval | RoHS Compliant |
|---|---|---|---|---|---|
| HCPL-7520 | Isolated Linear Current Sensing IC | 15 kV/s CMR, 60 ppm/C gain drift, -0.6 mV offset, 100 kHz bandwidth, 0.06% non-linearity | 8-pin DIP (300 mil) | UL 1577 (3750 Vrms) | Standard / Available |
| HCPL-7520-300E | Surface Mount Option | 15 kV/s CMR, 60 ppm/C gain drift, -0.6 mV offset, 100 kHz bandwidth, 0.06% non-linearity | Gull Wing Surface Mount | UL 1577 (3750 Vrms) | Yes |
| HCPL-7520-060E | IEC/EN/DIN EN 60747-5-2 Option | 15 kV/s CMR, 60 ppm/C gain drift, -0.6 mV offset, 100 kHz bandwidth, 0.06% non-linearity | 8-pin DIP (300 mil) | IEC/EN/DIN EN 60747-5-2 | Yes |
| Parameter | Symbol | Min. | Typ. | Max. | Units | Conditions |
|---|---|---|---|---|---|---|
| Common-Mode Rejection Ratio | CMRRIN | 63 | dB | |||
| Input Offset Voltage | VOS | -6 | -0.6 | 6 | mV | VIN+ = 0 V |
| Input Offset Voltage vs. Temperature | Vos/T | 8 | 20 | V/C | VIN+ = 0 V | |
| Gain Drift vs. Temperature | G/T | 60 | 300 | ppm/C | ||
| Non-linearity | NL200 | 0.06 | 0.55 | % | -0.2 V < VIN+ < 0.2 V | |
| Bandwidth (-3 dB) | BW | 50 | 100 | kHz | ||
| Common Mode Transient Immunity | CMTI | 10 | 15 | kV/s | TA = 25C, VCM = 1000 V | |
| Input-Output Withstand Voltage | VISO | 3750 | Vrms | 1 minute | ||
| Supply Voltage | VDD1, VDD2 | 4.5 | 5.0 | 5.5 | V | |
| Operating Temperature | TA | -40 | 85 | C |
Applications
- Low-power inverter current sensing
- Motor phase and rail current sensing
- Switched mode power supply signal isolation
- General purpose low-power current sensing and monitoring
- General purpose analog signal isolation
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