ISL6535 Synchronous Buck Pulse-Width Modulator (PWM) Controller

VIN (min) (V)	12
VIN (max) (V)	12
VOUT (min) (V)	0.6
VOUT (max) (V)	5
IOUT (max) (A)	30
VBIAS (V)	8 to 12

The ISL6535 is a high performance synchronous controller for demanding DC/DC converter applications. It provides overcurrent fault protection and is designed to safely startup into prebiased output loads.

The output voltage of the converter can be precisely regulated to as low as 0.597V, with a maximum tolerance of ±1% over the commercial temperature range, and ±1.5% over the industrial temperature range.

The ISL6535 provides simple, single feedback loop, voltagemode control with fast transient response. It includes a trianglewave oscillator that is adjustable from below 50kHz to over 1.5MHz. Full (0% to 100%) PWM duty cycle support is provided.

The error amplifier features a 15MHz gain-bandwidth product and 6V/μs slew rate which enables high converter bandwidth for fast transient performance.

The ISL6535's overcurrent protection monitors the current by using the rDS(ON) of the upper MOSFET, which eliminates the need for a current sensing resistor.

ISL6535 特点

Operates from +12V Input
Excellent Output Voltage Regulation
- 0.597V Internal Reference
- ±1% Over the Commercial Temperature Range
- ±1.5% Over the Industrial Temperature Range
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
- Leading and Falling Edge Modulation
Small Converter Size
- Constant Frequency Operation
- Oscillator Programmable from 50kHz to Over 1.5MHz
12V High Speed MOSFET Gate Drivers
- 2.0A Source/3A Sink at 12V Low Side Gate Drive
- 1.25A Source/2A Sink at 12V High Side Gate Drive
- Drives Two N-Channel MOSFETs
Overcurrent Fault Monitor
- High-Side MOSFET's rDS(ON) Sensing
- Reduced ~120ns Blanking Time
Converter can Source and Sink Current
Soft-Start Done and an External Reference Pin for Tracking Applications are Available in the QFN Package
Pin Compatible with ISL6522
Supports Start-Up into Prebiased Loads
Pb-free available (RoHS compliant)

ISL6535 应用

Power Supply for some Pentium(R), PowerPCTM, as well as Graphic CPUs
High-Power 12V Input DC/DC Regulators
Low-Voltage Distributed Power Supplies

ISL6535 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 $
ISL6535CBZ	量产	民用级	14 Ld SOIC	2
ISL6535CBZ-T	量产	民用级	14 Ld SOIC T+R	2
ISL6535CRZ	量产	民用级	16 Ld QFN	2
ISL6535CRZ-T	量产	民用级	16 Ld QFN T+R	2
ISL6535IBZ	量产	工业级	14 Ld SOIC	2
ISL6535IBZ-T	量产	工业级	14 Ld SOIC T+R	2
ISL6535IRZ	量产	工业级	16 Ld QFN	2
ISL6535IRZ-T	量产	工业级	16 Ld QFN T+R	2
ISL6535EVAL1	Coming Soon		评估板	N/A
ISL6535EVAL1Z	Coming Soon		评估板	N/A
ISL6535EVAL2	Coming Soon		评估板	N/A
ISL6535EVAL2Z	Coming Soon		评估板	N/A
ISL6535CB	停产	民用级	14 Ld SOIC		N/A
ISL6535CB-T	停产	民用级	14 Ld SOIC T+R		N/A