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PAC5255 Datasheet(PDF) 43 Page - Active-Semi, Inc |
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PAC5255 Datasheet(HTML) 43 Page - Active-Semi, Inc |
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43 / 74 page  PAC5255 Power Application Controller 12.3.4. Open-Drain Drivers The OMx pin is a 23V open-drain driver output controlled by a register bit. OMx is capable of driving 40mA. The OMx pin is switched to VSSP with 17Ω impedance in the on state when the corresponding bit is '1', and is in the high-impedance off state when the corresponding bit is '0'. 12.3.5. Power Drivers Control All power drivers are initially disabled from power-on-reset. To enable the power drivers, the microprocessor must first set the driver enable bit to '1'. The gate drivers controlled by the microcontroller ports and PWM signals according to Table 22, with configurable delays as shown in Table 22. The OMx open-drain drivers are controlled by their corresponding register bits. Refer to the PAC application notes and user guide for additional information on power drivers control programming. Table 22. Microcontroller Port and PWM to Power Driver Mapping PART NUMBER PWMA0 PWMA1 PWMA2 PWMA3/ PWMA4/ PWMB0 PWMA5/ PWMC0 PWMA6/ PWMD0 PWMA4/ PWMB0 PWMA5/ PWMA7/ PWMC1 PWMA6/ PWMD0 PAC5255 DRL0 DRL1 DRL2 DRL3 DRL4 DRL5 DXH0 DXH1 DXH2 Table 23. Power Driver Propgation Delay DRLx DXHx RISING FALLING RISING FALLING 130ns 140ns 200ns 240ns 12.3.6. Gate Driver Fault Protection The ASPD incorporates a configurable fault protection mechanism using two protection event signals from the Configurable Analog Front End (CAFE), designated as protection event 1 (PR1) and protection event 2 (PR2) signals. The DRL0/DRL1/DRL2 drivers are designated as low-side group 1, and the DRL3/DRL4/DRL5 gate drivers are designed as low-side group 2. The DXH0/DXH1/DXH2 ultra-high-voltage gate drivers are designated as high-side group 1. The PR1 - 43 - Rev 1.10‒March 3, 2018 Figure 12-3. High-Side Switching Transients and Optional Circuitry V DXSx V DXSx ≥ -10V V DXBx ≤ 625V V DXBx dV/dt dV/dt (a) High-Side Switching Transients (b) Optional Transient Protection and Slew Rate Control DXHx DRLx DXSx DXBx V P V IN PAC5255 |
Similar Part No. - PAC5255_18 |
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Similar Description - PAC5255_18 |
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