MPC17559EPSLASHR2 datasheet(10/19 Pages) FREESCALE

10 / 19 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

17559

FUNCTIONAL DESCRIPTION

INTRODUCTION

FUNCTIONAL DESCRIPTION

INTRODUCTION

The 17559 is a monolithic dual 3-phase plus dual H-Bridge

multiple motor driver IC ideal for portable electronic

applications containing two brushless DC motors plus two DC

brush motors (or plus one bipolar step motor). The control

logic translates the input signals to the gate-driver circuitry

while providing cross-conduction suppression.

The drivers are designed to be PWM’ed at high

frequencies for efficient and noise-free motor control. The

17559 is designed for portable audio and video applications

such as camcorders, but it may be used in any application

requiring highly efficient control of micromotors.Authors’

Note:

FUNCTIONAL DESCRIPTION

THREE-PHASE DRIVER CHANNEL 1 INPUT

(UI1, VI1, AND WI1)

The three-phase driver channel 1 input terminals (UI1, VI1,

and VI1) set the driver states (UO1, VO1, and WO1) in

accordance with the logic set force defined in Table 7,

page 11. Typically these inputs are supplied from an MCU or

a digital signal processor (DSP) to provide the phasing of the

currents applied to a brushless DC motor.

THREE-PHASE DRIVER CHANNEL 1 OUTPUT

(UO1, VO1, AND WO1)

The three-phase driver channel 1 output terminals (UO1,

VO1, and WO1) drive a three-phase motor, as well as supply

the peak currents with applied ON resistance (RDS(ON)hb).

THREE-PHASE DRIVER CHANNEL 1 PHASE

POWER GROUND (PGNDW1 AND PGNDUV1)

The three-phase driver channel 1 phase power ground

terminals (PGNDw1 and PGNDuv1) are ground terminals for

three-phase driver channel 1. PGNDw1 is a ground for W

phase driver, and PGNDuv1 is a ground for U and V phase

driver. PGNDw1 and PGNDuv1 are physically connected in

the IC in order to reduce internal resistance.

THREE-PHASE DRIVER CHANNEL 1 PHASE

POWER SUPPLY (VMVW1 AND VMU1)

The three-phase driver channel 1 phase power supply

terminals (VMvw1 and VMu1) are power supply terminals for

three-phase driver channel 1. VMvw1 is a power supply for V

and W phase driver, and VMu1 is a power supply for U phase

driver. VMvw1 and VMu1 are phyically connected in the IC in

order to reduce internal resistance.

THREE-PHASE DRIVER CHANNEL 2 INPUT

(UI2, VI2, AND WI2)

The three-phase driver channel 2 input terminals (UI2, VI2,

and WI2) set the driver states (UO2, VO2, and WO2) in

accordance with the logic set force in Table 7. Typically these

inputs are supplied from an MCU or DSP to provide the

phasing of the current applied to a brushless DC motor.

THREE-PHASE DRIVER CHANNEL 2 OUTPUT

(UO2, VO2, AND WO2)

The three-phase driver channel 2 output terminals (UO2,

VO2, and WO2) drive a three-phase motor, as well as supply

the peak currents with applied ON resistance (RDS(ON)hb).

THREE-PHASE DRIVER CHANNEL 2 PHASE

POWER GROUND (PGNDW2 AND PGNDUV2)

The three-phase driver channel 2 phase power ground

terminals (PGNDw2 and PGNDuv2) are ground terminals for

three-phase driver channel 2. PGNDw2 is a ground for W

phase driver, and PGNDuv2 is a ground for U and V phase

driver. PGNDw2 and PGNDuv2 are physically connected in

the IC in order to reduce internal resistance.

THREE-PHASE DRIVER CHANNEL 2 PHASE

POWER SUPPLY (VMVW2 AND VMU2)

The three-phase driver channel 2 phase power supply

terminals (VMvw2 and VMu2) are power supply terminals for

three-hase driver channel 2. VMvw2 is a power supply for V

and W phase driver, and VMu2 is a power supply for U phase

driver. VMvw2 and VMu2 are phyically connected in the IC in

order to reduce internal resistance.

LOGIC INPUT (OE, FI1, RI1, FI2, AND RI2)

These logic input terminals control each H-Bridge output.

OE = 1 is an output enable for each H-Bridge control and for

each three-phase comparator (refer to Table 6, page 11).

H-BRIDGE OUTPUTS (RO1, FO1, RO2, AND FO2)

These terminals provide connection to the outputs of each

internal H-Bridge (see Figure 1, 17559 Simplified Application

Diagram, page 1).

POWER SUPPLY (VMR1, VMF1, VMR2, AND VMF2)

These VM terminals carry the main power supply voltage

and current into the H-Bridge power section of the 17559.

The supply voltage then becomes controlled and/or

modulated by the IC as it delivers the power to the loads

attached between the output terminals. All VM terminals are

connected internally for VMR1 and VMF1, and VMR2 and

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