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MCP19124 bảng dữ liệu(PDF) 46 Page - Microchip Technology

tên linh kiện MCP19124
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MCP19124 bảng dữ liệu(HTML) 46 Page - Microchip Technology

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MCP19124/5
DS20005619A-page 46
 2016 Microchip Technology Inc.
6.7
Slope Compensation
A negative voltage slope is added to the output of the
error amplifier. This is done to prevent subharmonic
instability when:
1.
The operating duty cycle is greater than 50%.
2.
Wide changes in the duty cycle occur.
The amount of negative slope added to the error
amplifier output is controlled by slope compensation
slew rate control bits.
The slope compensation is enabled by clearing the
SLPBY bit in the SLPCRCON register.
REGISTER 6-9:
SLPCRCON: SLOPE COMPENSATION RAMP CONTROL REGISTER
U-0
R/W-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
SLPBY
SLPS5
SLPS4
SLPS3
SLPS2
SLPS1
SLPS0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
u = Bit is unchanged
x = Bit is unknown
-n = Value at POR
‘1’
= Bit is set
‘0’
= Bit is cleared
bit 7
Unimplemented: Read as ‘0’
bit 6
SLPBY: Slope Compensation Bypass Control bit
1
= Slope compensation is bypassed
0
= Slope compensation is not bypassed (Default)
bit 5-0
SLPS<5:0>: Slope Compensation Slew Rate Control bits
SLPS (mV/µs) = 4.2785 x 1.0765N where N = the decimal value written to the SLPCRCON Register
SLPS<5:0> from 0 to 63.



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