ADP1046ACPZ-R7 datasheet(76/96 Pages) AD

76 / 96 page

ADP1046

Data Sheet

Rev. 0 | Page 76 of 96

ADAPTIVE DEAD TIME REGISTERS

Register 0x68 to Register 0x70 can be used to program the adaptive dead time (ADT) feature. It is recommended that the software GUI be

used to program the adaptive dead time edges.

Figure 58. Adaptive Dead Time Window in the GUI

Table 104. Register 0x68—Adaptive Dead Time Threshold

Bits

Bit Name

R/W

Description

[7:0]

Adaptive dead

time threshold

R/W

This register sets the ADT threshold. This 8-bit number is compared to the eight MSBs of the CS1 value

the PWM signals are affected as a linear function of the CS1 current, as programmed in Register 0x69

to Register 0x6F. When this register is programmed to 0x00, the ADT function is disabled.

Table 105. Register 0x69—Dead Time 1

Bits

Bit Name

R/W

Description

t1 polarity

R/W

0 = positive polarity; 1 = negative polarity.

[6:4]

t1 offset

R/W

This value multiplied by Register 0x70[2:0] determines the t1 offset from nominal timing at no load.

Bit 6

Bit 5

Bit 4

Offset (ns)

t2 polarity

R/W

0 = positive polarity; 1 = negative polarity.

[2:0]

t2 offset

R/W

This value multiplied by Register 0x70[2:0] determines the t2 offset from nominal timing at no load.

Bit 2

Bit 1

Bit 0

Offset (ns)

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