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OPTION_REG Datasheet(PDF) 44 Page - Microchip Technology |
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OPTION_REG Datasheet(HTML) 44 Page - Microchip Technology |
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44 / 222 page  MCP19111 DS22331A-page 44 2013 Microchip Technology Inc. 6.9 MOSFET Driver Programmable Dead Time The turn-on delay of the high-side and low-side drive signals can be configured independently to allow differ- ent MOSFETs and circuit board layouts to be used to construct an optimized system. See Figure 6-2. Setting the HDLYBY and LDLYBY bits of the PE1 register enables the high-side and low-side delay, respectively. The amount of delay added is controlled in the DEADCON register. See Register 6-9 for more information. FIGURE 6-2: MOSFET DRIVER DEAD TIME HDLY LDLY HDRV LDRV REGISTER 6-9: DEADCON: DRIVER DEAD TIME CONTROL REGISTER R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x HDLY3 HDLY2 HDLY1 HDLY0 LDLY3 LDLY2 LDLY1 LDLY0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-4 HDLY<3:0>: High-Side Dead Time Configuration bits 0000 = 11 ns delay 0001 = 15 ns delay 0010 = 19 ns delay 0011 = 23 ns delay 0100 = 27 ns delay 0101 = 31 ns delay 0110 = 35 ns delay 0111 = 39 ns delay 1000 = 43 ns delay 1001 = 47 ns delay 1010 = 51 ns delay 1011 = 55 ns delay 1100 = 59 ns delay 1101 = 63 ns delay 1110 = 67 ns delay 1111 = 71 ns delay bit 3-0 LDLY<3:0>: Low-Side Dead Time Configuration bits 0000 = 4 ns delay 0001 = 8 ns delay 0010 = 12 ns delay 0011 = 16 ns delay 0100 = 20 ns delay 0101 = 24 ns delay 0110 = 28 ns delay 0111 = 32 ns delay 1000 = 36 ns delay 1001 = 40 ns delay 1010 = 44 ns delay 1011 = 48 ns delay 1100 = 52 ns delay 1101 = 56 ns delay 1110 = 60 ns delay 1111 = 64 ns delay |
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