ISL6540A Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability

VIN (min) (V)	3.3
VIN (max) (V)	20
VOUT (min) (V)	0.6
VOUT (max) (V)	VIN
IOUT (max) (A)	30

The ISL6540A is an improved version of the ISL6540 single-phase voltage-mode PWM controller with input voltage feed-forward compensation to maintain a constant loop gain for optimal transient response, especially for applications with a wide input voltage range. Its integrated high speed synchronous rectified MOSFET drivers and other sophisticated features provide complete control and protection for a DC/DC converter with minimum external components, resulting in minimum cost and less engineering design efforts.

The output voltage of the converter can be precisely regulated with an internal reference voltage of 0.591V, and has an improved system tolerance of ±0.68% over commercial temperature and line load variations. An external voltage can be used in place of the internal reference for voltage tracking/DDR applications.

The ISL6540A has an internal linear regulator or external linear regulator drive options for applications with only a single supply rail. The internal oscillator is adjustable from 250kHz to 2MHz. The integrated voltage margining, programmable pre-biased soft-start, differential remote sensing amplifier, and programmable input voltage POR features enhance the ISL6540A value.

ISL6540A 特点

VIN and Power Rail Operation from +3.3V to +20V
Fast Transient Response - 0 to 100% Duty Cycle
- 15MHz Bandwidth Error Amplifier with 6V/μs Slew Rate
- Voltage-Mode PWM Leading and Trailing-Edge Modulation Control
- Input Voltage Feedforward Compensation
2.9V to 5.5V High Speed 2A/4A MOSFET Gate Drivers
- Tri-state for Power Stage Shutdown
Internal Linear Regulator (LR) - 5.5V Bias from VIN
External LR Drive for Optimal Thermal Performance
Voltage Margining with Independently Adjustable Upper and Lower Settings for System Stress Testing and Over Clocking
Reference Voltage I/O for DDR/Tracking Applications
Improved 0.591V Internal Reference with Buffered Output
- ±0.68%/±1.0% Over Commercial/Industrial Range
Source and Sink Overcurrent Protections
- Low-and High-Side MOSFET rDS(ON) Sensing
Overvoltage and Undervoltage Protections
Small Converter Size - QFN package
Oscillator Programmable from 250kHz to 2MHz
Differential Remote Voltage Sensing with Unity Gain
Programmable Soft-Start with Pre-Biased Load Capability
Power-Good Indication with Programmable Delay
EN Input with Voltage Monitoring Capability
Pb-Free (RoHS Compliant)

ISL6540A 应用

Power Supply for some Microprocessors and GPUs
Wide and Narrow Input Voltage Range Buck Regulators
Point of Load Applications
Low-Voltage and High Current Distributed Power Supplies

ISL6540A 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL6540ACRZ	量产	民用级	28 Ld QFN	3	1.47
ISL6540ACRZ-T	量产	民用级	28 Ld QFN T+R	3	1.47
ISL6540AIRZ	量产	工业级	28 Ld QFN	3	1.79
ISL6540AIRZ-T	量产	工业级	28 Ld QFN T+R	3	1.79
ISL6540AIRZA	量产	工业级	28 Ld QFN	3	2.53
ISL6540AIRZA-T	量产	工业级	28 Ld QFN T+R	3	2.53
ISL6540ACRZA	Coming Soon	民用级	28 Ld QFN	3	价格录入中
ISL6540ACRZA-T	Coming Soon	民用级	28 Ld QFN T+R	3	价格录入中
ISL6540AEVAL1Z	Coming Soon		评估板	N/A	价格录入中