Datasheet

 2013 Microchip Technology Inc. DS22331A-page 45
MCP19111
6.10 Output Voltage Configuration
Two registers control the error amplifier reference
voltage. The reference is coarsely set in 15 mV steps
and then finely adjusted in 0.82 mV steps above the
coarse setting (see Registers 6-10 and 6-11). Higher
output voltages can be achieved by using a voltage
divider connected between the output and the +V
SEN
pin. Care must be taken to ensure maximum voltage
rating compliance on all pins.
Note: The OVFCON<VOUTEN> bit must be set
to enable the output voltage setting
registers.
REGISTER 6-10: OVCCON: OUTPUT VOLTAGE SET POINT COARSE CONTROL REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
OVC7 OVC6 OVC5 OVC4 OVC3 OVC2 OVC1 OVC0
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 7-0 OVC<7:0>: Output Voltage Set Point Coarse Configuration bits
OVC<7:0> = (V
OUT
/15.8 mV)+15.8 mV
REGISTER 6-11: OVFCON: OUTPUT VOLTAGE SET POINT FINE CONTROL REGISTER
R/W-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
VOUTEN — — OVF4 OVF3 OVF2 OVF1 OVF0
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 VOUTEN: Output Voltage DAC Enable bit
1 = Output Voltage DAC is enabled
0 = Output Voltage DAC is disabled
bit 6-5 Unimplemented: Read as ‘0’
bit 4-0 OVF<4:0>: Output Voltage Set Point Coarse Configuration bits
OVF<4:0> = (V
OUT
– V
OUT_COARSE
)/0.8 mV