BU64562GWZ Datasheet, PDF (10/24 Pages) Rohm – Piezoelectric Actuator Driver

BD64562GWZ
●Description of Functions
1) The structure of the driving wave for Piezo actuator
ⅠⅡ
1osc
1cycle = (ta + 1) + brake1 + tb + brake2 + (4 x osc)
ⅢⅣ Ⅴ
Ⅵ
Ⅶ
Ⅷ
1osc 1osc
1osc
Output①
Datasheet
ⅠⅡ
1osc
Ⅲ
1osc
Output②
ta+1 brake1
tb
brake2
ta
Ⅱ_{(RFeovrwerasred)}
Ⅵ ^Reverse
(Forward)
*9
*9
*9
Ⅰ HiZ
Ⅲ HiZ Ⅴ HiZ
*10
Ⅳ Short brake
*9
Ⅶ HiZ
*9 The state at osc = 0x0 or osc ≠ 0x0 and HiZE = 0x0 is HiZ.
*10 At mode = 0, the output logic is a setting of a short brake.
* 10
Ⅷ Short brake
Forward
Ⅱ _(Reverse)
*9
Ⅰ HiZ
*9
Ⅲ HiZ
dir (Address: 0x0, Data: D[0])
0
1
Output①
OUTA
OUTB
Output②
OUTB
OUTA
Note
Move to the direction of Macro
Move to the direction of infinity
Driving wave is set by the 4 parameters of ta / brake1 / tb / brake2.
OSC period is set by the OSC (Internal clock basic cycle setting).
ta
brake1
tb
brake2
: On section is ( ta + 1 - 1) = ta counts for Forward (Reverse) state.
: On section is (brake1 - 1) count for short brake state.
: On section is (tb1 - 1) count for Reverse (Forward) state.
: On section is (brake2 - 1) count for short brake state.
(Ex.) In case of setting 1 cycle = 10.67 µs, ta = 1.27 µs, brake1 = 0.13 µs, tb = 1.93 µs, brake2 = 7.07 µs.
osc[2:0]( = Basic cycle setting ) = 0x0 （ = Basic cycle = 66.67 ns）, and ta / brake1 / tb / brake2 setting below;
ta[7:0]
brake1[7:0]
tb[7:0]
brake2[7:0]
= 0x13
= 0x03
= 0x1E
= 0x6B
= 19 count
= 3 count
= 30 count
= 107 count
→ ON section = 19 + 1 – 1 = 19 count
→ ON section = 2 count
→ ON section = 29 count
→ ON section = 106 count
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TSZ22111・15・001
10/20
TSZ02201-0H2H0B600450-1-2
9.Oct.2012 Rev.001