PAC5255 Datasheet, PDF (40/71 Pages) Active-Semi, Inc – Power Application Controller

PAC5255
Power Application Controller
12. APPLICATION SPECIFIC POWER DRIVERS (ASPD)
12.1. Features
 6 low-side and 3 ultra-high-voltage high-side gate drivers
 2 open-drain drivers
 Configurable delays and fast fault protection
12.2. Block Diagram
Figure 12-1. Application Specific Power Drivers
APPLICATION SPECIFIC POWER DRIVERS
HIGH-SIDE GATE DRIVERS
HS1
FAULT HS2
PROTECT _LS2
LS1
ENDRV
DELAY
LEVEL
SHIFT
PRE-
DRIVER
DELAY
LOW-SIDE GATE DRIVERS
V
P
PRE-
DRIVER
Low-Speed
Clock Gen
DXBx
DXHx
DXSx
CLKOUT/ENHS2
DRLx
DOUTOMx
OM DRIVERS
OMx
12.3. Functional Description
The Application Specific Power Drivers (ASPD, Figure 12-1) module handles power driving for power control
applications. The ASPD has six low-side gate drivers (DRLx), three ultra-high-voltage high-side gate drivers (DXHx), two
medium-voltage open-drain drivers (OMx) and a low-speed clock output/5V external driver enable signal
(CLKOUT/ENHS2). Each gate driver can drive an external MOSFET or IGBT switch in response to high-speed control
signals from the micro-controller ports, and a pair of high-side and low-side gate drivers can form a half-bridge driver. The
open-drain drivers provide activation control for relays, LEDs, buffers, and other loads.
Figure 12-2 below shows typical gate driver connections and Table 21 shows the ASPD resources available on PAC5255.
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Rev 1.1‒April 15, 2016