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HCPL316J 数据表(PDF) 2 Page - Agilent(Hewlett-Packard) |
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HCPL316J 数据表(HTML) 2 Page - Agilent(Hewlett-Packard) |
2 / 33 page 2 UVLO Desat Condition Pin 6 VIN+ VIN- (VCC2 - VE) Detected on (FAULT) VOUT Pin 14 Output 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 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 Figure 1. Typical Desaturation Protected Gate Drive Circuit, Non-Inverting. configurable inputs, integrated VCE detection, under voltage lockout (UVLO), “soft” IGBT turn-off and isolated fault feed- back provide maximum design flexibility and circuit protection. 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 (VOUT) is slowly lowered. 3. FAULT output goes low, notifying the microcontroller of the fault condition. 4. Microcontroller takes appropriate action. Output Control The outputs (VOUT 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 (VCC2 - VE > VUVLO), VOUT is allowed to go 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 VUVLO- < 12.4 V. Thus, the DESAT detection and UVLO features of the HCPL-316J work in conjunction to ensure constant IGBT protection. – + + – * * * CBLANK DDESAT RPULL-DOWN 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 VE VLED2+ DESAT VCC2 VC VOUT VEE VEE VIN+ VIN- VCC1 GND1 RESET FAULT VLED1+ VLED1- HCPL-316J + – µC RF VF + – RG VCE VCE + – + – 100 Ω * THESE COMPONENTS ARE ONLY REQUIRED WHEN NEGATIVE GATE DRIVE IS IMPLEMENTED. |
类似零件编号 - HCPL316J |
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类似说明 - HCPL316J |
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