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MCP19116 Datasheet(PDF) 46 Page - Microchip Technology

Part # MCP19116
Description  Digitally Enhanced Power Analog Synchronous Low-Side PWM Controller with Improved 8k Word Core
PDF  246 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP19116 Datasheet(HTML) 46 Page - Microchip Technology

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MCP19116/7
DS20005479B-page 46
 2015-2016 Microchip Technology Inc.
6.6
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 duty cycle occur
The amount of negative slope added to the error
amplifier
output
is
controlled
by
the
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) = 4.4683 * 1.077N where N is the decimal value written to the SLPCRCON Register
<SLPS5:SLPS0> from 0 to 63.



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