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High-Efficiency Buck Converter Guide

The GS9216 is a small, high-performance synchronous buck converter chip suitable for battery-powered portable devices like notebooks. It has a wide input voltage range of 2.7-26V and can output voltages between 0.6-12V with ±1% accuracy over varying loads and input voltages. The chip uses constant-on-time control for high efficiency during transients and at different loads while maintaining fast response times under 100ns. It has integrated high and low-side MOSFETs and supports frequencies from 100-600kHz with a power save mode to reduce power consumption at light loads. The GS9216 is available in a TQFN23-4x4 package and includes protections like over

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8K views1 page

High-Efficiency Buck Converter Guide

The GS9216 is a small, high-performance synchronous buck converter chip suitable for battery-powered portable devices like notebooks. It has a wide input voltage range of 2.7-26V and can output voltages between 0.6-12V with ±1% accuracy over varying loads and input voltages. The chip uses constant-on-time control for high efficiency during transients and at different loads while maintaining fast response times under 100ns. It has integrated high and low-side MOSFETs and supports frequencies from 100-600kHz with a power save mode to reduce power consumption at light loads. The GS9216 is available in a TQFN23-4x4 package and includes protections like over

Uploaded by

ziko
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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High Performance Single Synchronous Buck Converter GS9216

Features General Description


 Wide Output Current Range：12A The GS9216 is small size chip with a relative
 Wide Input Voltage Range：2.7V~26V constant on-time synchronous buck switching
 Adjustable 0.6V~12V Output Range converter suitable for applications in notebook
 ±1% Output Voltage Accuracy over Line and computers and other battery operated portable
Load devices. Features include wide input voltage
 Constant-on-time control scheme for fast range, high efficiency and fast dynamic response
transient and high Efficiency The GS9216 has a unique power save mode,
 Programmable Operation Frequency from which can save battery power supply by
100kHz to 600kHz decreasing frequency when load current falls
 Integrated 19 mΩ at VCC=5V N-Channel down below preset critical current point.
MOSFET For High Side The fast dynamic transient response means that
 Integrated 6.8 mΩ at VCC=5V N-Channel buck converter applications based on GS9216
MOSFET For Low Side will provide about 100ns-order response to load
 Selectable Forced PWM or automatic when output voltage falls down or rises up. The
PFM/PWM mode frequency will increase or decrease to meet the
 Support pure MLCC change in output load. Moreover, the GS9216 will
 Power Good Indicator take the same method to regulate the output
 Under-Voltage Protection voltage when input voltage changes. When
 Over-Voltage Protection transient response regulated, the converter will
 External Adjustable Soft-Start and Soft-Stop maintain a new steady-state operation. Both the
 Over Temperature Protection transient response state and the new state, the
 Over Current Protection GS9216 always has the same on-time width.
 TQFN23-4x4 package The GS9216 is suitable for the solutions which
 Green Product (RoHS, Lead-Free, the output voltage is between 0.6V and 12V. An
Halogen-Free Compliant) external setting resistor and output voltage can
set the on-time width and frequency for the
Applications converter. Additional features include current limit,
 Notebook computers soft-start, over-voltage and under-voltage
 CPU core/IO Supplies protection, a Power Good flag and soft discharge
 Chip/RAM Supplies upon shutdown. The GS9216 is available in
 Graphic Cards package TQFN23-4x4.

This document is GStek's confidential information. Anyone having confidential obligation to GStek shall keep this document confidential. Any unauthorized
disclosure or use beyond authorized purpose will be considered as violation of confidentiality and criminal and civil liability will be asserted.

Green Solution Technology Co., LTD.


Rev.:1.4 1 Feb-19

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