Datasheet AIM702H50B (Alpha & Omega) - 8
| Fabricante | Alpha & Omega |
| Descripción | Intelligent Power Module |
| Páginas / Página | 10 / 8 — AIM702H50B. Example of Application Circuit. (19) P. (18) U1. (17) P. (16) … |
| Formato / tamaño de archivo | PDF / 709 Kb |
| Idioma del documento | Inglés |
AIM702H50B. Example of Application Circuit. (19) P. (18) U1. (17) P. (16) V. (15) W. Micro. Controller. (14) U2. (13) N. (12)COM. www.aosmd.com
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AIM702H50B Example of Application Circuit (19) P
C1 D1 C2 (1) VB(U) UVB UHO C1 D1 C2 (2) VB(V) VVB
(18) U1 #1
UVS
(17) P
C1 D1 C2 (3) VB(W) WVB VHO
(16) V
VVS
#2
M R (4) IN(UH) UHIN C R (5) IN High-side (VH) VHIN PWM input C R (6) IN WHO (WH) WHIN 15V C (7) V
(15) W
CC WVS VCC C1 D1 C2 COM
Micro Controller
VCC VLO
#5
C3 C4
#2
R (8) IN(UL) ULIN C R (9) IN Low-side (VL) WLO VLIN PWM input C R (10) IN(WL) WLIN Make a short connection,
(14) U2
C and GND wiring should
#3
R2 (11) VOT Temperature ULO VOT be connected at N1 sensing C5 10kΩ
(13) N
COM Open: OT Enabled
(12)COM
10kΩ Pull-down: OT Disabled R1 Current detection
#4
C4 Shunt resistor N1 Control GND wiring Power GND wiring Recommended Component Values: (#1) C1:1~3.3µF, C2:100nF, D1:20V (#2) R:100Ω, C:1nF (#3) R2:2kΩ, C5:10nF (#4) R1:1kΩ, C4:2nF (#5) C3:0.1~0.22µF (1) If the control GND is connected with the power GND by common broad pattern, it may cause malfunction by power GND fluctuation. It is recommended to connect the control GND and power GND at a point (N1), near the terminal of shunt resistor. (2) A zener diode D1 (20V/1W) is recommended between each pair of control supply pins to prevent surge destruction. (3) Prevention of surge destruction can further be improved by placing the bus capacitor as close to pin P and N1 as possible. Generally a 0.1~0.22µF snubber capacitor C3 between the P-N1 terminals is recommended. (4) When the current detection function is utilized by using the shunt resistor, the RC filter (R1 and C4) needs to be inserted to avoid the voltage spike noise in the current detection circuit. C4 should be placed as close to the controller as possible. (5) Tight tolerance and temperature-compensated components are also recommended when selecting the R2*C5 filter for VOT. The R2*C5 time constant should be set such that VOT is immune to noise. Recommended values of R2 and C5 are 2kΩ and 10nF. (6) It is recommended that all capacitors are mounted as close to the IPM as possible. (C1: electrolytic type with good temperature and frequency characteristics. C2: ceramic type with 0.1µF, good temperature, frequency and DC bias characteristics). (7) To prevent malfunction, the layout to each input should be as short as possible. When using the RC coupling circuit (R: 100Ω, C: 1nF), place it as close to the IPM input pins as possible, and make sure the input signal levels meet the required turn-on and turn-off threshold voltages. Rev.1.2 January 2020
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Page 8 of 10
C1 D1 C2 (1) VB(U) UVB UHO C1 D1 C2 (2) VB(V) VVB
(18) U1 #1
UVS
(17) P
C1 D1 C2 (3) VB(W) WVB VHO
(16) V
VVS
#2
M R (4) IN(UH) UHIN C R (5) IN High-side (VH) VHIN PWM input C R (6) IN WHO (WH) WHIN 15V C (7) V
(15) W
CC WVS VCC C1 D1 C2 COM
Micro Controller
VCC VLO
#5
C3 C4
#2
R (8) IN(UL) ULIN C R (9) IN Low-side (VL) WLO VLIN PWM input C R (10) IN(WL) WLIN Make a short connection,
(14) U2
C and GND wiring should
#3
R2 (11) VOT Temperature ULO VOT be connected at N1 sensing C5 10kΩ
(13) N
COM Open: OT Enabled
(12)COM
10kΩ Pull-down: OT Disabled R1 Current detection
#4
C4 Shunt resistor N1 Control GND wiring Power GND wiring Recommended Component Values: (#1) C1:1~3.3µF, C2:100nF, D1:20V (#2) R:100Ω, C:1nF (#3) R2:2kΩ, C5:10nF (#4) R1:1kΩ, C4:2nF (#5) C3:0.1~0.22µF (1) If the control GND is connected with the power GND by common broad pattern, it may cause malfunction by power GND fluctuation. It is recommended to connect the control GND and power GND at a point (N1), near the terminal of shunt resistor. (2) A zener diode D1 (20V/1W) is recommended between each pair of control supply pins to prevent surge destruction. (3) Prevention of surge destruction can further be improved by placing the bus capacitor as close to pin P and N1 as possible. Generally a 0.1~0.22µF snubber capacitor C3 between the P-N1 terminals is recommended. (4) When the current detection function is utilized by using the shunt resistor, the RC filter (R1 and C4) needs to be inserted to avoid the voltage spike noise in the current detection circuit. C4 should be placed as close to the controller as possible. (5) Tight tolerance and temperature-compensated components are also recommended when selecting the R2*C5 filter for VOT. The R2*C5 time constant should be set such that VOT is immune to noise. Recommended values of R2 and C5 are 2kΩ and 10nF. (6) It is recommended that all capacitors are mounted as close to the IPM as possible. (C1: electrolytic type with good temperature and frequency characteristics. C2: ceramic type with 0.1µF, good temperature, frequency and DC bias characteristics). (7) To prevent malfunction, the layout to each input should be as short as possible. When using the RC coupling circuit (R: 100Ω, C: 1nF), place it as close to the IPM input pins as possible, and make sure the input signal levels meet the required turn-on and turn-off threshold voltages. Rev.1.2 January 2020
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Page 8 of 10