MPC17511AEPR2 Freescale Semiconductor, MPC17511AEPR2 Datasheet - Page 9

• Manufacturer Part Number: MPC17511AEPR2
• Description: IC DRIVER MOTOR H-BRIDGE 24-QFN
• Manufacturer: Freescale Semiconductor
• Type: Quad Line Receiverr

Specifications of MPC17511AEPR2

• Applications: DC Motor Driver, Stepper Motor Driver, H Bridge
• Number Of Outputs: 1
• Current - Output: 1A
• Voltage - Load: 2 V ~ 6.8 V
• Voltage - Supply: 2.7 V ~ 5.7 V
• Operating Temperature: -20°C ~ 65°C
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Operating Supply Voltage: 10 V
• Supply Current: 3 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MPC17511AEPR2TR

to small DC motors used in portable electronics. The 17511A
can operate efficiently with supply voltages as low as 2.0V to
as high as 6.8V, and it can provide continuos motor drive
currents of 1.0A while handling peak currents up to 3.0A. It is
easily interfaced to low-cost MCUs via parallel 3.0 V- or 5.0V-
compatible logic. The device can be pulse width modulated
(PWM-ed) at up to 200 kHz. The 17511A has four operating
modes: Forward, Reverse, Brake, and Tri-State (High
Impedance).
dynamic braking, PWM control of speed and torque, main
power supply undervoltage detection and shutdown, logic
power supply undervoltage detection and shutdown), in
addition to the 1.0A rms output current capability, make the
17511A a very attractive, cost-effective solution for
controlling a broad range of small DC motors. In addition, a
pair of 17511A devices can be used to control bipolar step
motors. The 17511A can also be used to excite transformer
OUT1 AND OUT2
internal power MOSFET H-Bridge of the IC. A typical load
connected between these pins would be a small DC motor.
These outputs will connect to either VM or PGND, depending
on the states of the control inputs (refer to
Table, page 8).
PGND AND LGND
should be connected together with a very low-impedance
connection.
CRES
reservoir capacitor (output of the charge pump). Alternatively
this pin can also be used as an input to supply gate-drive
voltage from an external source via a series current-limiting
resistor. The voltage at the CRES pin will be approximately
three times the V
utilizes a voltage tripler circuit. The VCRES voltage is used by
the IC to supply gate drive for the internal power MOSFET
H-Bridge.
VM
the power sections of the IC. This supply then becomes
controlled and/or modulated by the IC as it delivers the power
Analog Integrated Circuit Device Data
Freescale Semiconductor
The 17511A is a monolithic H-Bridge power IC applicable
Basic protection and operational features (direction,
The OUT1 and OUT2 pins provide the connection to the
The power and logic ground pins (PGND and LGND)
The CRES pin provides the connection for the external
The VM pins carry the main supply voltage and current into
DD
voltage, as the internal charge pump
Table 6, Truth
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
INTRODUCTION
primary windings with a switched square wave to produce
secondary winding AC currents.
Diagram, page 2, the 17511A is a monolithic H-Bridge with
built-in charge pump circuitry. For a DC motor to run, the
input conditions need to be set as follows: ENable input logic
HIGH, one INput logic LOW, and the other INput logic HIGH
(to define output polarity). The 17511A can execute dynamic
braking by setting both IN1 and IN2 logic HIGH, causing both
low-side MOSFETs in the output H-Bridge to turn ON.
Dynamic braking can also implemented by taking the ENable
logic LOW. The output of the H-Bridge can be set to an open-
circuit high-impedance (Z) condition by taking both IN1 and
IN2 logic LOW. (refer to
DC load current of up to 1.2A. An internal charge pump
supports PWM frequencies to 200 kHz. The EN pin also
controls the charge pump, turning it off when EN = LOW, thus
allowing the 17511A to be placed in a power-conserving
sleep mode.
to the load attached between OUT1 and OUT2. All VM pins
must be connected together on the printed circuit board with
as short as possible traces offering as low impedance as
possible between pins.
drops below the undervoltage threshold, the output power
stage switches to a tri-state condition. When the supply
voltage returns to a level that is above the threshold, the
power stage automatically resumes normal operation
according to the established condition of the input pins.
IN1, IN2, AND EN
control the outputs. These pins are 5.0 V CMOS-compatible
inputs with hysteresis. The IN1, IN2, and EN work together to
control OUT1 and OUT2 (refer to
GIN
logic LOW, GOUT supplies a level-shifted high-side gate
drive signal to an external MOSFET. When GIN is set logic
HIGH, GOUT is set to GND potential.
C1L AND C1H, C2L AND C2H
C2H, connect to the external bucket capacitors required by
the internal charge pump. The typical value for the bucket
capacitors is 0.1 μF.
As shown in
The 17511A outputs are capable of providing a continuous
VM has an undervoltage threshold. If the supply voltage
The IN1, IN2, and EN pins are input control pins used to
The GIN input controls the GOUT pin. When GIN is set
These two pairs of pins, the C1L and C1H and the C2L and
Figure 2, 17511A Simplified Internal Block
Table 6, Truth
FUNCTIONAL DESCRIPTION
Table 6, Truth
Table, page 8).
INTRODUCTION
Table).
17511A
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