2010-2013 Microchip Technology Inc. DS22259C-page 7
MTS2916A
2.1 Current Detection Selection
(I01, I02, I11, I12)
Comparator input for current threshold detection. The
voltage across the sense resistor is fed back to this
input through the low pass filter RcCc. The power tran-
sistors are disabled when the sense voltage exceeds
the reference voltage of the selected comparator.
When this occurs, the current decays for a time set by
RtCt (T
OFF
= 1.1 RtCt).
2.2 Current Flow Direction Selection
(PHASE1, PHASE2)
Logic input to select the direction of current flow
through the load. A “HIGH” logic signal level causes
load current to flow from OUTxA to OUTxB. A “LOW”
logic level causes load current to flow from OUTxB to
OUTxA.
2.3 Current Sense Reference
(V
REF1
, V
REF2
)
Reference voltage for current sense comparator.
Determines the level of output current detection
together with sensing resistor and inputs I0x, I1x.
2.4 Output Stage OFF Time
(RC1, RC2)
A parallel RtCt network connected to this pin sets the
OFF time of the power transistors. The monostable
pulse generator is triggered by the output of the current
sense comparator.
2.5 Ground Terminal (GND)
Logic supply ground. Only the driver current flows out
of this pin; there is no high current. Minimize voltage
drops between this pin and the logic inputs.
2.6 Logic Supply Voltage (V
LOGIC
)
Connect V
LOGIC
to the logic source voltage. Decouple
the supply with a 0.1 µF ceramic capacitor mounted
close to the V
LOGIC
and GND terminals.
2.7 Current Sense Comparator Input
(COMPIN1, COMPIN2)
Current sense comparator input.
2.8 Current Sense Input
(SENSE1, SENSE2)
Connection to lower sources of output stage for inser-
tion of current sense resistor.
2.9 Output Stage
(OUT1A, OUT2A, OUT1B, OUT2B)
Output connection to “A” side and “B” side of motor
windings.
2.10 Load Supply Voltage (V
LOAD
)
Connect V
LOAD
to the motor positive voltage supply.
The motor current is supplied through this pin and the
selected output transistors.
