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HCPL-316J-500E датащи(PDF) 2 Page - AVAGO TECHNOLOGIES LIMITED |
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HCPL-316J-500E датащи(HTML) 2 Page - AVAGO TECHNOLOGIES LIMITED |
2 / 33 page 2 Desat Condition Pin 6 UVLO Detected on (FAULT) VIN+ VIN- (VCC2 - VE) Pin 14 Output VOUT 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, afford- able, and easy-to-implement. Features such as user con- figurable inputs, integrated VCE detection, under volt- Figure 1. Typical desaturation protected gate drive circuit, noninverting. Output Control The outputs (VOUT and FAULT) of the HCPL-316J are con- trolled 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-invert- ing using the VIN+ or VIN- inputs respectively. When an in- verting 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 VU- VLO+ > 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. * THESE COMPONENTS ARE ONLY REQUIRED WHEN NEGATIVE GATE DRIVE IS IMPLEMENTED. Description of Operation during Fault Condition 1. DESAT terminal monitors the IGBTVCE 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. + – + – * * * 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 age lockout (UVLO), “soft” IGBT turn-off and isolated fault feedback provide maximum design flexibility and circuit protection. |
Аналогичный номер детали - HCPL-316J-500E |
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Аналогичное описание - HCPL-316J-500E |
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