TL598_TI 脉宽调制 (PWM) 控制电路

TL598的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
功能描述：脉宽调制 (PWM) 控制电路
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TL598的产品详情：

The TL598 incorporates all the functions required in the construction of pulse-width-modulated (PWM) controlled systems on a single chip. Designed primarily for power-supply control, the TL598 provides the systems engineer with the flexibility to tailor the power-supply control circuits to a specific application.

The TL598 contains two error amplifiers, an internal oscillator (externally adjustable), a dead-time control (DTC) comparator, a pulse-steering flip-flop, a 5-V precision reference, undervoltage lockout control, and output control circuits. Two totem-pole outputs provide exceptional rise- and fall-time performance for power FET control. The outputs share a common source supply and common power ground terminals, which allow system designers to eliminate errors caused by high current-induced voltage drops and common-mode noise.

The error amplifier has a common-mode voltage range of 0 V to VCC - 2 V. The DTC comparator has a fixed offset that prevents overlap of the outputs during push-pull operation. A synchronous multiple supply operation can be achieved by connecting RT to the reference output and providing a sawtooth input to CT.

The TL598 device provides an output control function to select either push-pull or parallel operation. Circuit architecture prevents either output from being pulsed twice during push-pull operation. The output frequency for push-pull applications is one-half the oscillator frequency (f_o=1/2 RT CT). For single-ended applications: (f_o=1/RT CT)

TL598的优势和特性：

Complete PWM Power-Control Function
Totem-Pole Outputs for 200-mA Sink or Source Current
Output Control Selects Parallel or Push-Pull Operation
Internal Circuitry Prohibits Double Pulse at Either Output
Variable Dead-Time Provides Control Over Total Range
Internal Regulator Provides a Stable 5-V Reference Supply, Trimmed to 1% Tolerance
On-Board Output Current-Limiting Protection
Undervoltage Lockout for Low VCC Conditions
Separate Power and Signal Grounds

TL598的参数（英文）：

Topology
Boost,
Duty cycle (Max) (%)
45
Supply voltage (Max) (V)
40
UVLO thresholds on/off (V)
4/6
Features
Adjustable Switching Frequency, Error Amplifier, Multi-topology
Operating temperature range (C)
0 to 70
Rating
Catalog
Frequency (Max) (kHz)
300
Gate drive (Typ) (A)
0.2

TL598具体的完整产品型号参数及价格（美元）：

TL598的完整型号有：TL598CD、TL598CDR、TL598CN，以下是这些产品的关键参数及官网采购报价：

TL598CD，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TL598CD的批量USD价格：.652（1000+）

TL598CDR，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TL598CDR的批量USD价格：.543（1000+）

TL598CN，工作温度：0 to 70，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TL598CN的批量USD价格：.624（1000+）

TL598的评估套件：

TL598的电路图解：

TL598的评估套件：