http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Diodes Semiconductor Electronic Components Datasheet

AP3586B Datasheet

Single Phase Synchronous Buck PWM Controller

No Preview Available !

AP3586B pdf
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
General Description
The AP3586A/B/C is a compact synchronous
-rectified buck controller specifically designed to
operate from 5V or 12V supply voltage and deliver
high-quality output voltage as low as 0.6V
(AP3586A) or 0.8V (AP3586B/C). This device
operates at fixed 300kHz (AP3586A/B) or 200kHz
(AP3586C) frequency and provides an optimal level
of integration to reduce size and cost of the power
supply.
This controller integrates internal MOSFET drivers
that support 12V+12V bootstrapped voltage for high-
efficiency power conversion. The bootstrap diode is
built-in to simplify the circuit design and minimize
external part count.
This controller provides single feedback loop,
voltage-mode control with fast transient response.
The error amplifier features a 10MHz gain-bandwidth
product and 6V/µs slew rate which enables high
converter bandwidth for fast transient performance.
Other features include internal soft-start, under
voltage protection, over current protection and
shutdown function. With afore-mentioned functions,
this part provides customers a compact, high
efficiency, well-protected and cost-effective
solutions.
The AP3586A/B/C is available in SOIC-8 and
PSOP-8 packages.
Features
• Supply Voltage: 5V/12V
VIN Input Range: 3.3V to 12V
0.6V/0.8V to 82% of VIN Output Range
Internal Reference: 0.6V/0.8V
• Simple Single-loop Control
Voltage-mode PWM Control
Duty Cycle: 0% to 82%
Fast Transient Response
• 10MHz High-bandwidth Error Amplifier with
6V/µs Slew Rate
• Fixed Oscillator Frequency: 300kHz/200kHz
• Lossless, Programmable Over Current Protection
(Uses Lower MOSFET RDS(ON) )
• Start-up into Pre-biased Load
• Built-in Thermal Shutdown
• Built-in Soft-start
• Over Current Protection
• Over Voltage Protection
• Under Voltage Protection
• Integrated Boot Diode
Applications
Subsystem Power Supplies
PCI, AGP, Graphics Cards, Digital TV
SSTL-2 and DDR/2/3 SDRAM Bus Termination
Supply
Cable Modems, Set Top Boxes, and DSL
Modems
Industrial Power Supplies and General Purpose
Supplies
Mar. 2012 Rev. 1. 1
SOIC-8/PSOP-8
Figure 1. Package Types of AP3586A/B/C
BCD Semiconductor Manufacturing Limited
1


Diodes Semiconductor Electronic Components Datasheet

AP3586B Datasheet

Single Phase Synchronous Buck PWM Controller

No Preview Available !

AP3586B pdf
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Pin Configuration
M Package
(SOIC-8)
MP Package
(PSOP-8)
18
27
36
45
18
27
36
45
Figure 2. Pin Configuration of AP3586A/B/C (Top View)
Pin Description
Pin Number
SOIC-8 PSOP-8
11
22
33
44
55
66
77
88
9
Pin Name
BOOT
UGATE
GND
LGATE/OCSET
VCC
FB
COMP/EN
PHASE
Exposed Pad
Function
Bootstrap pin. Connect a bootstrap capacitor from this pin to
PHASE for creating a BOOT voltage suitable to drive a standard
N-Channel MOSFET.
Upper-gate drive pin. Connect this pin to the upper MOSFET gate
providing the gate drive. This pin is monitored by the adaptive
shoot-through protection circuitry to determine when the upper
MOSFET has turned off.
Ground for the IC. All voltage levels are measured with respect to
this pin. Connect this pin directly to the low side MOSFET source
and ground plane with the lowest impedance. The exposed pad
must be soldered to a large PCB and connected to GND for
maximum power dissipation.
Low-side Gate Driver Output and Over-Current Setting Input.
This pin is the gate driver for low-side MOSFET. It is also used to
set the maximum inductor current. Refer to the section in
“Function Description” for detail.
Bias supply pin. Provides a 5V or 12V bias supply for the chip
from this pin. The pin should be bypassed with a capacitor to
GND.
Feedback pin. This pin is the inverting input of the internal error
amplifier. Use FB pin, in combination with the COMP pin, to
compensate the voltage control feedback loop of the converter. A
resistor divider from output to GND is used to set the output
voltage.
Compensation and disable pin. This pin is the output of the Error
Amplifier. Pull COMP pin low will shut down the IC.
This pin connects to the source of the upper MOSFET and the
drain of the lower MOSFET. This pin is also monitored by the
adaptive shoot-through protection circuitry to determine when the
upper MOSFET has turned off.
Exposed Pad as ground pin.
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
2


Part Number AP3586B
Description Single Phase Synchronous Buck PWM Controller
Maker BCD
Total Page 17 Pages
PDF Download
AP3586B pdf
Download PDF File
AP3586B pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 AP3586A Single Phase Synchronous Buck PWM Controller BCD
BCD
AP3586A pdf
2 AP3586B Single Phase Synchronous Buck PWM Controller BCD
BCD
AP3586B pdf
3 AP3586C Single Phase Synchronous Buck PWM Controller BCD
BCD
AP3586C pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components