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PDF APW8713 Data sheet ( Hoja de datos )
| Número de pieza | APW8713 | |
| Descripción | High Input Voltage 8A PWM Converter | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APW8713
High Input Voltage 8A PWM Converter With Adj. Soft Start
Features
General Description
• Adjustable Output Voltage from +0.8V to +12V
The APW8713 is a 8A, synchronous, step-down converter
- 0.8V Reference Voltage
with integrated 30mΩ N-channel High-Side MOSFET and
- +1% Accuracy over Temperature
9mΩ Low-Side MOSFET. The APW8713 steps down high
• Operates from An Input Battery Voltage Range of voltage to generate low-voltage chipset or RAM supplies
+2.7V to +28V
in notebook computers.
• Power-On-Reset Monitoring on VCC pin
The APW8713 provides excellent transient response and
• Excellent line and load transient responses
accurate DC voltage output in either PFM or PWM Mode.
• PFM mode for increased light load efficiency
In Pulse Frequency Mode (PFM), the APW8713 provides
very high efficiency over light to heavy loads with loading-
• Programmable PWM Frequency from 100kHz to modulated switching frequencies. In PWM Mode, the con-
1000kHz
verter works nearly at constant frequency for low-noise
• Integrated 30mΩ at VCC=5V N-Channel MOSFET requirements.
For High Side
The APW8713 is equipped with accurate current-limit,
• Integrated 9mΩ at VCC=5V N-Channel MOSFET For output under-voltage, and output over-voltage protections,
Low Side
perfect for various applications. A Power-On-Reset func-
• Integrated Bootstrap Forward P-CH MOSFET
tion monitors the voltage on VCC to prevent wrong
• External Adjustable Soft-Start and Soft-Stop
operation during power-on. The APW8713 has external
•
adjustable soft-start and built-in an integrated output dis-
Selectable Forced PWM or automatic PFM/PWM
charge method for soft stop. A soft-start ramps up the
mode
output voltage with programmable timing to reduce the
• Power Good Monitoring
start-up current. A soft-stop function actively discharges
• 70% Under-Voltage Protection
the output capacitors.
• 125% Over-Voltage Protection
The APW8713 is available in TQFN4x4-23 (Power PAK).
• Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
• Over-Temperature Protection
Applications
• TQFN-23 4mmx4mm package
• Lead Free and Green Device Available (RoHS
Compliant)
• Notebook
• Mother Board
• Table PC
• Hand-Held Portable
• AIO PC
• Set-top boxes
• LCD TV
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Sep., 2013
1
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
1 page  
APW8713
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN=12V,VEN=5V and TA= -40 to 85 oC. Typical values are at TA=25oC.
Symbol
Parameter
POWER-OK INDICATOR
VPOK
POK Threshold
IPOK POK Leakage Current
POK Sink Current
POK Out Debounce Time2
POK Enable Delay Time
CURRENT SENSE
IOCP OCP Threshold
Zero Crossing Comparator
Offset
PROTECTION
VUV UVP Threshold
UVP Debounce Interval
UVP Enable Delay
VOVR
OVP Rising Threshold1
OVP Propagation Delay
TOTR
OTP Rising Threshold (Note
5)
OTP Hysteresis (Note 5)
Test Condition
POK in from Lower (POK Goes
High)
POK out from Normal (POK Goes
Low)
VPOK=5V
VPOK=0.5V
When run away 90%
From EN High to POK High
Valley Current of IL
VGND-LX Voltage, PFM=0V
EN high to UVP workable
OVP Occur
VFB Rising, Over Voltage=10mV
Min.
APW8713
Typ. Max.
Unit
87 90 93 %
120 125 130 %
-
1.25
-
-
0.1
7.5
20
Tss
- µA
- mA
- µs
- ms
11 - - A
-5 0 5 mV
65 70 75 %
16 µs
Tss ms
120 125 130 %
- 3 - µs
- 145 - oC
- 45 - oC
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Sep., 2013
5
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
5 Page 
APW8713
Block Diagram
125% VREF
POK
Delay
LX
Mean Value
Circuit
TON
PFM
90% VREF
125% VREF
OV
70% VREF
FB
Fault
Latch
UV Logic
Thermal
Shutdown
Error
Comparator
On-Time
Generator
PFM
EN
VCC
LDO
VREF
POR
Soft Start
LX
SS
Current
Limit
Reference
VCC
Gate
Driver
UG
VLX
VCC
Gate
Driver
LG
GND
VIN
BOOT
LX
PGND
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Sep., 2013
11
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet APW8713.PDF ] | |
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