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PDF GS92A5 Data sheet ( Hoja de datos )
| Número de pieza | GS92A5 | |
| Descripción | High Performance Single Synchronous Buck Converter | |
| Fabricantes | Green Solution Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de GS92A5 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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High Performance Single Synchronous Buck Converter
http://www.btian.com.cn
135-9038-5985 Andy
GS92A5
Features
Wide Input Voltage Range：3V~28V
Adjustable 0.8V~20V Output Range
±1% Output Voltage Accuracy over Line and
Load
Wide output load range: 0 to 10A
Constant-on-time control scheme for fast
transient and high Efficiency
Programmable Operation Frequency from
100kHz to 600kHz
Selectable Forced PWM or automatic
PFM/PWM mode
45% Under-Voltage Protection
125% Over-Voltage Protection
FB Short Protection
Internal 5V Pre-regulator
External Adjustable Soft-Start and Soft-Stop
Internal Over Temperature Protection
Programmable Over Current Protection
TQFN20-5x5 package
Green Product (RoHS, Lead-Free,
Halogen-Free Compliant)
Applications
Notebook computers
CPU core/IO Supplies
Chip/RAM Supplies
General Description
The GS92A5 is small size chip with a relative
constant on-time synchronous buck switching
converter suitable for applications in notebook
computers and other battery operated portable
devices. Features include very wide input voltage
range, high efficiency and a fast dynamic
response with internal fast response scheme.
The GS92A5 have a unique power save mode,
which can save battery power supply by
decreasing frequency when load current falls
down below preset critical current point.
The fast dynamic transient response means that
buck converter applications based on GS92A5
will provide about 100ns-order response to load
when output voltage falls down or rises up. The
frequency will increase or decrease to meet the
change in output load. Moreover, the GS92A5 will
take the same method to regulate the output
voltage when input voltage changes. When
transient response regulated, the converter will
maintains a new steady-state operation. Both the
transient response state and the new state, the
GS92A5 always has the same on-time.
The GS92A5 is suitable for the solutions which
have the output voltage between 0.8V and 20V.
An external setting resistor and output voltage
can set the on-time, duty-cycle and frequency for
the converter. The integrated gate drivers feature
adaptive shoot-through protection, fast signal
transmission. Additional features include current
limit, soft-start, over-voltage and under-voltage
protection, a Power Good flag and soft discharge
upon shutdown. The GS92A5 is available in
package TQFN20-5x5.
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.:0.3
1
Jan-15
1 page  
High Performance Single Synchronous Buck Converter
http://www.btian.com.cn
135-9038-5985 Andy
GS92A5
11~14
15
PGND
LGATE
16 UGATE
17 BOOT
18 VCC
19 SS
20 EN/DEM
O Power Ground.
Lower gate drive output. Connect to gate of low-side power
O
MOSFET.
Upper gate drive output for Buck Converter. Connect to gate of
O
high-side power MOSFET.
Bootstrap Capacitor Connection. Connect an external capacitor
I
between BOOT and VSWH Pin.
I/O Internal Linear Regulator Output.
Soft-Start Time Setting Pin. Connect a capacitor between SS and
I/O
AGND to set the soft-start time.
Buck Enable Control Pin. EN=Low, Shutdown; EN=High,
I
Auto-DEM Mode; EN=Floating, Forced CCM
Ordering Information
GS92A5TQ-R
1. Package
2. Shipping
No Item
Contents
1 Package TQ:TQFN20-5x5
2 Shipping R: Tape & Reel
Example: GS92A5 TQFN20-5x5 Tape & Reel ordering information is “GS92A5TQ-R”
Green Solution Technology Co., LTD.
Rev.:0.3
5
Jan-15
5 Page 
High Performance Single Synchronous Buck Converter
http://www.btian.com.cn
135-9038-5985 Andy
GS92A5
OVP
CH1:Vout; CH2:FB; CH3:PHASE
UVP
CH1:Vout; CH2:FB; CH3:PHASE
C
Power ON in Short Condition
CH1:VOUT CH2:VIN CH3:PHASE CH4:IOUT
Power ON then Short
CH1:VOUT CH2:VIN CH3:PHASE CH4:IOUT
OTP
CH1:VOUT CH3: PHASE CH4: IOUT
Load Transient DEM Mode(1A to 9A)
CH1:VOUT CH3: PHASE CH4: IOUT
Green Solution Technology Co., LTD.
Rev.:0.3
11
Jan-15
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet GS92A5.PDF ] | |
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