DataSheet26.com

EM5301G PDF даташит

Спецификация EM5301G изготовлена ​​​​«Excelliance MOS» и имеет функцию, называемую «PWM Controller».

Детали детали

Номер произв EM5301G
Описание PWM Controller
Производители Excelliance MOS
логотип Excelliance MOS логотип 

12 Pages
scroll

No Preview Available !

EM5301G Даташит, Описание, Даташиты
12V Synchronous Buck PWM Controller
EM5301F/G
General Description
EM5301F/G is a synchronous rectified PWM
controller operating with 12V supply voltage. This
device operates at 160/200 kHz and provides an
optimal level of integration to reduce size and cost
of the power supply.
This part includes internal soft start, over
current protection, under voltage protection, over
voltage protection, and shutdown function. This
part is available in PSOP-8 package.
Ordering Information
Part Number Package Frequency
EM5301FGE PSOP-8 160kHz
EM5301GGE PSOP-8 200kHz
Applications
Notebook & Netbook
Graphic Cards & MB
Low Voltage Logic Supplies
Pin Configuration
Features
Operate from 12V Voltage Supply
0.8V VREF with 1.0% Accuracy
Voltage Mode PWM Control
160kHz or 200kHz Fixed Frequency
Oscillator
0% to 80% Duty Cycle
Internal Soft Start
Over Current Protection
Integrated Bootstrap Diode
Adaptive Non-Overlapping Gate Driver
Under Voltage Protection
Over Voltage Protection
Typical Application Circuit
EM5301
2013/5/2
Rev.A.1
1









No Preview Available !

EM5301G Даташит, Описание, Даташиты
Pin Assignment
EM5301F/G
Pin Name Pin No.
Pin Function
BOOT
UGATE
GND
LGATE
VCC
FB
COMP/
SD
PHASE
Bootstrap Supply for the floating upper gate driver. Connect the bootstrap
capacitor C BOOT between BOOT pin and the PHASE pin to form a bootstrap circuit.
1 The bootstrap capacitor provides the charge to turn on the upper MOSFET. Typical
values for C BOOT range from 0.1uF to 0.47uF. Ensure that C BOOT is placed near the
IC.
Upper Gate Driver Output. Connect this pin to the gate of upper MOSFET. This pin
2 is monitored by the adaptive shoot-through protection circuitry to determine when
the upper MOSFET has turned off.
Signal and Power Ground for the IC. All voltages levels are measured with respect
3 to this pin. Tie this pin to the ground island/plane through the lowest impedance
connection available.
Lower Gate Driver Output. Connect this pin to the gate of lower MOSFET. This pin
4 is monitored by the adaptive shoot-through protection circuitry to determine when
the lower MOSFET has turned off.
Supply Voltage. This pin provides the bias supply for the EM5301F/G and the lower
5
gate driver. The supply voltage is internally regulated to 5VDD for internal control
circuit. Connect a well-decoupled 10V to 13.2V supply voltage to this pin. Ensure
that a decoupling capacitor is placed near the IC.
6
Feedback Voltage. This pin is the inverting input to the error amplifier. A resistor
divider from the output to GND is used to set the regulation voltage.
Error Amplifier Output. This pin is the output of error amplifier and the
non-inverting input of the PWM comparator. Use this pin in combination with the
7 FB pin to compensate the voltage control feedback loop of the converter. Pulling
this pin lower than 0.2V disables the controller and causes the oscillator to stop,
the UGATE and LGATE outputs to be held low.
PHASE Switch Node. Connect this pin to the source of the upper MOSFET and the
drain of the lower MOSFET. This pin is used as the sink for the UGATE driver, and to
monitor the voltage drop across the lower MOSFET for over current protection.
8 This pin is also monitored by the adaptive shoot-through protection circuitry to
determine when the upper MOSFET has turned off. A Schottky diode between this
pin and ground is recommended to reduce negative transient voltage which is
common in a power supply system.
2013/5/2
Rev.A.1
2









No Preview Available !

EM5301G Даташит, Описание, Даташиты
Function Block Diagram
VCC
5
Soft Start
Internal
regulator
POR
FB 6
Vref=0.8V
-
- EA
+
COMP/SD 7
0.2V
OTP
Ramp
PWM
Oscillator
VCC
17V
Enable
75% Vref
FB
FB
130% Vref
EM5301F/G
Gate
control
logic
VCC
1 BOOT
2 UGATE
8 PHASE
VOCP
4 LGATE
3 GD
2013/5/2
Rev.A.1
3










Скачать PDF:

[ EM5301G.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
EM5301PWM ControllerExcelliance MOS
Excelliance MOS
EM5301FPWM ControllerExcelliance MOS
Excelliance MOS
EM5301GPWM ControllerExcelliance MOS
Excelliance MOS

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск