ap2014 Diodes, Inc., ap2014 Datasheet

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ap2014

Manufacturer Part Number
ap2014
Description
Synchronous Pwm Controller
Manufacturer
Diodes, Inc.
Datasheet

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Synchronous PWM Controller
- Synchronous Controller in 8-Pin Package
- Operating with single 5V or 12V supply voltage
- Internal 200KHz Oscillator (400KHz for AP2014A)
- Soft-Start Function
- Fixed Frequency Voltage Mode
- 500mA Peak Output Drive Capability
- Protects the output when control FET is shorted
- SOP-8L/PDIP-8L Pb-Free package
- Graphic Card
- Hard Disk Drive
- DDR memory source sink Vtt application
- Low cost on-board DC to DC such as 5V to 3.3V,
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this
product. No rights under any patent accompany the sale of the product.
2.5V or 1.8V
Applications
Pin Assignments
Features
LDrv
GND
Vcc
FB
1
3
4
SOP-8L/PDIP-8L
2
(Top View)
AP2014/A
5
8
7
6
Comp
SS
Vc
HDrv
1/12
The AP2014 controller IC is designed to provide a
low cost synchronous Buck regulator for on-board
DC to DC converter applications. With the migration
of today’s ASIC products requiring low supply
voltages such as 1.8V and lower, together with
currents in excess of 3A, traditional linear regulators
are simply too lossy to be used when input supply is
5V or even in some cases with 3.3V input supply.
The
MOSFETs such as AF9410, provide a low cost
solution for such applications. This device features
an internal 200KHz oscillator (400KHz for "A"
version), under-voltage lockout for both Vcc and Vc
supplies, an external programmable soft-start
function as well as output under-voltage detection
that latches off the device when an output short is
detected.
Name
Comp
GND
HDrv
LDrv
Pin
Vcc
FB
SS
Vc
Pin Descriptions
General Description
AP2014
Pin
No.
1
2
3
4
5
6
7
8
This pin is connected directly to the output of the
switching regulator via resistor divider to provide
feedback to the Error amplifier.
This pin provides biasing for the internal blocks of
the IC as well as power for the low side driver. A
minimum of 1uF, high frequency capacitor must be
connected from this pin to ground to provide peak
drive current capability.
Output driver for the synchronous power MOSFET.
This pin serves as the ground pin and must be
connected directly to the ground plane. A high
frequency capacitor (0.1 to 1uF) must be connected
from V5 and V12 pins to this pin for noise free
operation.
Output driver for the high side power MOSFET.
This pin is connected to a voltage that must be at
least 4V higher than the bus voltage of the switcher
(assuming 5V threshold MOSFET) and powers the
high side output driver. A minimum of 1uF, high
frequency capacitor must be connected from this
pin to ground to provide peak drive current
capability.
Compensation pin of the error amplifier. An external
resistor and capacitor network is typically connected
from
compensation.
This pin provides soft-start for the switching
regulator. An internal current source charges an
external capacitor that is connected from this pin to
ground which ramps up the output of the switching
regulator, preventing it from overshooting as well as
limiting the input current. The converter can be
shutdown by pulling this pin below 0.5V.
together
this
pin
with
to
Description
AP2014/A
ground
dual
Rev. 1.2 Nov 29, 2005
to
N-channel
provide
loop

Related parts for ap2014

ap2014 Summary of contents

Page 1

... This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. General Description The AP2014 controller IC is designed to provide a low cost synchronous Buck regulator for on-board converter applications. With the migration of today’ ...

Page 2

... Synchronous PWM Controller Ordering Information AP2014/A X Block Diagram 3V 20uA 8 SS 64uA POR Max 1.25V 25K 25K Fb 1 Comp 7 Absolute Maximum Ratings Symbol V Vcc Supply Voltage Supply Voltage (not rated for inductive load Storage Temperature Range ST T Operating Junction Temperature Range ...

Page 3

... C A Conditions AP2014 AP2014A 5 < Vcc < Supply Ramping Supply Ramping Ramping Down (AP2014) FB Ramping Down (AP2014A) Freq=200KHz, C =1500pF L Freq=200KHz, C =1500pF L SS=0V SS=0V SS=0V SS=3V, FB=1V SS=0V, FB=1V AP2014 AP2014A C =1500pF L C =1500pF L FB=1V, Freq=200KHz FB=1.5V 3/12 AP2014/A =25°C. Low duty A Min. Typ. Max. Unit 1.225 1.25 1.275 V 0.784 0.8 0.816 - 0.2 0.35 % 4.0 4.2 4 ...

Page 4

... AF9410N L1 5.6u/9.0 Q2 AF9410N C20 100p C1 0.1uF C8 470u AF9410N 5 Q2 AF9410N R6 C20 6.8k 100p Option Single Supply 12V Input 4/12 AP2014/A VIN=5V C11 0.1u R1 820 R2 3.3K Vout +1.5V/7.0A C12 C13 C17 0.1u 470u 470u VIN=12V C11 0.1u R1 820 R2 3.3K L1 Vout +1.5V/7.0A 5.6u/9A C12 C13 C17 470u 470u ...

Page 5

... Single Supply 12V Input C1 D1 0.1uF 1N4148 C4 0. Comp 10nF R6 C20 47k 100p I ( 15mA)=(VIN-V -V )/RZD Single Supply 24V Input 5/12 AP2014/A VIN=12V C8 C11 470u 0.1u R1 10K Vout +5V/5.0A 10uH/6A C13 C17 470u 0.1u VIN=24V C8 C11 470u 0.1u R1 10K R2 Q1-1 3.3K AF4928N-1 L1 Vout +5V/4.0A ...

Page 6

... LDrv 10nF R4 3. GND C13 0.1uF Dual Supply, 5V Bus and 12V Bias Input Anachip Corp www.anachip.com.tw L1 1uH + C3 100uF Q1 AF9410 L2 10uH Q2 AF9410 C10 C11 1uF Q3 AF9410 L3 10uH Q4 AF9410 R6 R5 1.65K 1K 6/12 AP2014 47uF 1.8V/1A AP1187 + C5 47uF 2.5V/ 220uF 3.3V/1.8A + C12 220uF Rev. 1.2 Nov 29, 2005 ...

Page 7

... Frequency v.s. Temperature 240.0 230.0 220.0 210.0 200.0 190.0 180.0 170.0 160.0 150.0 -40 7/12 AP2014/A Efficiency v.s. Iout Iout(A) Line Regulation 5.0 7.0 9.0 11.0 12.0 15.0 Vin(V) - 100 125 o Temperature ( C) Rev. 1.2 Nov 29, 2005 ...

Page 8

... Synchronous PWM Controller Typical Performance Characteristics (Continued) Icc and Iccq v.s. Vin 15.00 13.00 11.00 9.00 7.00 5.00 3.00 4 Vin(V) Icc and Ic v.s. Temperature 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 -40 - Temperature ( C) AP2014A Ic and Icc vs Vc 21.0 Ic(mA) 19.0 Icc(mA) 17.0 15.0 13.0 11.0 9.0 7.0 5.0 3 Anachip Corp www.anachip.com.tw 16.00 14.00 12.00 10.00 Icc(mA) Iccq(mA) 8.00 6.00 4.00 2.00 4 Vfb v.s. Temperature 1.30 Icc(mA) Ic(mA) 1.28 1.26 1.24 1.22 1.20 75 100 125 ...

Page 9

... Vcc=5V, Vc=12V, Vout=2.5V, Iout=5A , Temp=28 Dead time = 160ns Phase Highside GATE Lowside GATE Anachip Corp www.anachip.com.tw Vout Ripple Vcc=5V; Vc=12V; Vout=2.5V Iout=5A, Vripple=33.2mV Dead time v.s. Iout o C Dead time = 150ns Dead time v.s. Iout o C Dead time = 150ns 9/12 AP2014/A Rev. 1.2 Nov 29, 2005 ...

Page 10

... Synchronous PWM Controller Function Descriptions Introduction The AP2014 is a fixed frequency, voltage mode synchronous controller and consists of a precision reference voltage, an error amplifier, an internal oscillator, a PWM comparator, 0.5A peak gate driver, soft-start and shutdown circuits Diagram). The output voltage of the synchronous converter is set and controlled by the output of the error amplifier ...

Page 11

... Nom. Max. Min. 1.60 1.75 0.055 - 0.25 0.040 1.45 1.50 0.051 0.41 0.51 0.013 0.20 0.25 0.0075 5.05 5.30 0.189 3.90 4.10 0.146 1. 5.99 6.20 0.228 0.71 1.27 0.015 - 0. 11/12 AP2014 (4X) Nom. Max. 0.063 0.069 - 0.100 0.057 0.059 0.016 0.020 0.008 0.010 0.199 0.209 0.154 0.161 0.050 - 0.236 0.244 0.028 0.050 - 0.004 Rev. 1.2 Nov 29, 2005 ...

Page 12

... AP2014 Nom. Max. - 0.210 - - 0.130 0.138 0.018 0.022 0.060 0.065 0.039 0.045 0.010 0.014 0.365 0.375 0.313 0.325 0.250 0.258 0.100 - 0.130 0.150 0.350 0.382 0.033 0.038 Rev. 1.2 Nov 29, 2005 ...

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