DRV594集成电路（IC）的电源管理-专用规格书PDF中文资料

DRV594属于集成电路（IC）的电源管理-专用。由德州仪器制造生产的DRV594电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。

1FEATURES

2• Operation Reduces Output Filter Size and Cost

by 50% Compared to DRV591

• ±3-A Maximum Output Current

• Low Supply Voltage Operation: 2.8 V to 5.5 V

• High Efficiency Generates Less Heat

• Overcurrent and Thermal Protection

• Fault Indicators for Overcurrent, Thermal and

Undervoltage Conditions

• Two Selectable Switching Frequencies

• Internal or External Clock Sync

• PWM Scheme Optimized for EMI

• 9×9 mm PowerPAD™ Quad Flatpack Package

APPLICATIONS

• Thermoelectric Cooler (TEC) Driver

• Laser Diode Biasing

DESCRIPTION

The DRV593 and DRV594 are high-efficiency,

high-current power amplifiers ideal for driving a wide

variety of thermoelectric cooler elements in systems

powered from 2.8 V to 5.5 V. The operation of the

device requires only one inductor and capacitor for

the output filter, saving significant printed-circuit

board area. Pulse-width modulation (PWM) operation

and low output stage on-resistance significantly

decrease power dissipation in the amplifier.

The DRV593 and DRV594 are internally protected against thermal and current overloads. Logic-level

fault indicators signal when the junction temperature

has reached approximately 128°C to allow for

system-level shutdown before the amplifier's internal

thermal shutdown circuitry activates. The fault

indicators also signal when an overcurrent event has occurred. If the overcurrent circuitry is tripped, the

devices automatically reset (see application

information section for more details).

The PWM switching frequency may be set to 500 kHz

or 100 kHz depending on system requirements. To

eliminate external components, the gain is fixed at

2.3 V/V for the DRV593. For the DRV594, the gain is

fixed at 14.5 V/V.