HCPL-316J - 2.5 Amp Gate Drive Optocoupler Datasheet - Desaturation Detection and Fault Status Feedback

Q: What does the DESAT terminal monitor in the HCPL-316J operation?

The DESAT terminal monitors the IGBT VCE voltage through DDESAT. When the DESAT voltage exceeds 7 V, the IGBT gate voltage is slowly lowered.

Q: How is the FAULT signal generated and what is its purpose?

When a fault condition is detected, the FAULT output goes low to notify the microcontroller. The microcontroller then takes the appropriate action.

Q: How do UVLO and desaturation detection work together for protection?

UVLO ensures the DESAT detection feature functions correctly. DESAT remains functional once VUVLO+ > 11.6 V until VUVLO- drops below 12.4 V, providing coordinated constant IGBT protection.

Oct 12, 2026

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HCPL-316J is a 2.5 A gate drive optocoupler for IGBT systems, providing compact, affordable, and easy fault protection with integrated VCE desaturation detection and isolated fault status feedback. The device supports CMOS/TTL-compatible inputs, drives IGBTs up to IC = 150 A and VCE = 1200 V, and includes fail-safe protection with desat detection and UVLO hysteresis. User-configurable modes (inverting/non-inverting, auto-reset/shutdown) enable flexible operation while meeting safety and regulatory requirements.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages32

Reading Time1 h 21 min

AccessFree to download

Features

Fault Protected IGBT Gate Drive

Description of Operation during Fault Condition

Output Control

Product Overview Description

HCPL-316J 2.5 Amp Gate Drive Optocoupler with Integrated (VCE) Desaturation Detection and Fault Status Feedback Data Sheet Description Avago’s 2.5 Amp Gate Drive Optocoupler with Integrated Desaturation (VCE) Detection and Fault Status Feedback makes IGBT VCE fault protection compact, affordable, and easy-to-implement while satisfying worldwide safety and regulatory requirements. Features • 2.5 A maximum peak output current • Drive IGBTs up to IC = 150 A, VCE = 1200 V • Optically isolated, FAULT status feedback • SO-16 package • CMOS/TTL compatible • 500 ns max. switching speeds Fault Protected IGBT Gate Drive Features (continued) • “Soft” IGBT turn-off • Integrated fail-safe IGBT protection – Desat (VCE) detection – Under Voltage Lock-Out protection (UVLO) with hysteresis • User configurable: inverting, noninverting, auto-reset, auto-shutdown • Wide operating V CC range: 15 to 30 Volts • -40°C to +100°C operating temperature range • 15 kV/µs min. Common Mode Rejection (CMR) at V CM = 1500 V • Regulatory approvals: UL, CSA, IEC/EN/DIN EN 60747- 5-5 (1414 V peak Working Voltage) | 3-PHASE INPUT | +HV | | --- | --- | | |
| CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which maybe induced byESD. The components featured in this datasheet are not to be used in military or aerospace applications or environments. Typical Fault Protected IGBT Gate Drive Circuit The HCPL-316J is an easy-to-use, intelligent gate driver which makes IGBT VCE fault protection compact, affordable, and easy-to-implement. Features such as user configurable inputs, integrated VCE detection, under volt- age lockout (UVLO),“soft” IGBT turn-off and isolated fault feedback provide maximum design flexibility and circuit protection. Figure 1. Typical desaturation protected gate drive circuit, noninverting. Description of Operation during Fault Condition 1. DESAT terminal monitors the IGBT VCE voltage through DDESAT. 2. When the voltage on the DESAT terminal exceeds 7 volts, the IGBT gate voltage (V OUT) is slowly lowered. 3. FAULT output goes low, notifying the microcontroller of the fault condition. 4. Microcontroller takes appropriate action. Output Control The outputs (V OUT and FAULT ) of the HCPL-316J are controlled by the combination of VIN, UVLO and a detected IGBT Desat condition. As indicated in the below table, the HCPL-316J can be configured as inverting or non-inverting using the VIN+or VIN-inputs respectively. When an inverting configuration is desired, VIN+ must be held high and VIN-toggled. When a non-inverting configuration is desired, VIN- must be held low and VIN+ toggled. Once UVLO is not active (V CC2-VE > VUVLO), V OUT is allowed togo high, and the DESAT (pin 14) detection feature of the HCPL-316J will be the primary source of IGBT protection. UVLO is needed to ensure DESAT is functional. Once VUVLO+ > 11.6 V, DESAT will remain functional until V UVLO- < 12.4 V. Thus, the DESAT detection and UVLO features of the HCPL-316J work in conjunction to ensure constant IGBT protection. | VIN+ | VIN- | UVLO (V CC2-VE) | Desat Condition
Detected on Pin 14 | Pin 6
(FAULT) Output | V OUT | | --- | --- | --- | --- | --- | --- | | X | X | Active | X | X | Low | | X | X | X | Yes | Low | Low | | Low | X | X | X | X | Low | | X | High | X | X | X | Low | | High | Low | Not Active | No | High | High | Product Overview Description The HCPL-316J is a highly integrated power control device that incorporates all the necessary components for a complete, isolated IGBT gate drive circuit with fault protection and feedback into one SO-16 package. TTL input logic levels allow direct interface with a microcontroller, and an optically isolated power output stage drives IGBTs with power ratings of up to 150 A and 1200 V. A high speed internal optical link minimizes the propagation delays bet

FAQs

What does the DESAT terminal monitor in the HCPL-316J operation?

The DESAT terminal monitors the IGBT VCE voltage through DDESAT. When the DESAT voltage exceeds 7 V, the IGBT gate voltage is slowly lowered.

How is the FAULT signal generated and what is its purpose?

When a fault condition is detected, the FAULT output goes low to notify the microcontroller. The microcontroller then takes the appropriate action.

How do UVLO and desaturation detection work together for protection?

UVLO ensures the DESAT detection feature functions correctly. DESAT remains functional once VUVLO+ > 11.6 V until VUVLO- drops below 12.4 V, providing coordinated constant IGBT protection.

Oct 12, 2026

Upload by Rainbow Cat