Datasheet AIM702H50B (Alpha & Omega) - 6
| Manufacturer | Alpha & Omega |
| Description | Intelligent Power Module |
| Pages / Page | 10 / 6 — AIM702H50B. Time Charts of the IPM Protective Function. Figure 5. … |
| File Format / Size | PDF / 709 Kb |
| Document Language | English |
AIM702H50B. Time Charts of the IPM Protective Function. Figure 5. Under-Voltage Protection (Low-side, UVCC)
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AIM702H50B Time Charts of the IPM Protective Function
Control Input Protection circuit state RESET SET RESET UVCCR 1 Control supply voltage V UV 5 CCT CC 3 2 4 6 Low side output
(1) Control supply voltage VCC exceeds under-voltage reset level (UVCCR), but MOSFETs turn on by next ON signal (L→H). (2) Normal operation: MOSFETs turn-on and output current. (3) VCC level drops to under-voltage trip level (UVCCT). (4) All low-side MOSFETs turn off regardless of control input condition. (5) VCC level reaches UVCCR. (6) Normal operation: MOSFETs turn on and output current.
Figure 5. Under-Voltage Protection (Low-side, UVCC)
Control Input Protection circuit state RESET SET RESET UVBSR 1 5 UVBST Control supply voltage VBS 3 2 4 6 High side output
(1) Control supply voltage VBS rises. After the voltage reaches under-voltage reset level (UVBSR), MOSFETs turn on by next ON signal (L→H). (2) Normal operation: MOSFETs turn on and output current. (3) VBS level drops to under-voltage trip level (UVBST). (4) All high-side MOSFETs turn off regardless of control input condition. (5) VBS level reaches UVBSR. (6) Normal operation: MOSFETs turn on and output current.
Figure 6. Under-Voltage Protection (High-side, UVBS)
Rev.1.2 January 2020
www.aosmd.com
Page 6 of 10
Control Input Protection circuit state RESET SET RESET UVCCR 1 Control supply voltage V UV 5 CCT CC 3 2 4 6 Low side output
(1) Control supply voltage VCC exceeds under-voltage reset level (UVCCR), but MOSFETs turn on by next ON signal (L→H). (2) Normal operation: MOSFETs turn-on and output current. (3) VCC level drops to under-voltage trip level (UVCCT). (4) All low-side MOSFETs turn off regardless of control input condition. (5) VCC level reaches UVCCR. (6) Normal operation: MOSFETs turn on and output current.
Figure 5. Under-Voltage Protection (Low-side, UVCC)
Control Input Protection circuit state RESET SET RESET UVBSR 1 5 UVBST Control supply voltage VBS 3 2 4 6 High side output
(1) Control supply voltage VBS rises. After the voltage reaches under-voltage reset level (UVBSR), MOSFETs turn on by next ON signal (L→H). (2) Normal operation: MOSFETs turn on and output current. (3) VBS level drops to under-voltage trip level (UVBST). (4) All high-side MOSFETs turn off regardless of control input condition. (5) VBS level reaches UVBSR. (6) Normal operation: MOSFETs turn on and output current.
Figure 6. Under-Voltage Protection (High-side, UVBS)
Rev.1.2 January 2020
www.aosmd.com
Page 6 of 10
