Diodes AP3107Z User Manual

AP3107Z

Document number: DS36677 Rev. 2 - 1

1 of 11

www.diodes.com

November 2013

AP3107Z

A Product Line of

Diodes Incorporated

Description

The AP3107Z is the high voltage start-up, current mode PWM controller with green mode power-saving operation.

To minimize the standby power consumption, a proprietary adaptive green mode function provides frequency modulation at light load conditions. To avoid acoustic noise problems, the minimum PWM frequency is set at about 26kHz.

The AP3107Z features proprietary frequency dithering function internally that helps to reduce EMI emission of a power supply with minimum line filters used.

The AP3107Z also integrates a lot of functions such as Leading-Edge Blanking (LEB) of the current sensing, internal slope compensation, line compensation and several protection features. The protection functions include cycle-by-cycle current limit (OCP), over voltage protection, OTP, OLP and brownout protection.

The AP3107Z is available in SO-7 package.

Features

• High-voltage Start-up Circuit

• Low Start-up Current: 15μA Max.

• Fixed Oscillation Frequency: 65kHz

• Ultra Low Standby Power Application

• Non-audible-noise Green Mode Control

• LEB (Leading-edge Blanking) on SENSE Pin

• Soft Driving

• Fast OCP for Abnormal Short Circuit

• Frequency Linearly Decreasing at Light Load

• Internal Slope Compensation

• Programmable Brownout Protection

• Useful Pin Fault Protections

• SENSE, FB Pins Floating

• FB Short to Ground

• Comprehensive System Protections

• VCC Over Voltage Protection (VOVP)

• Over Temperature Protection (OTP)

• Constant Over Load Protection (COLP)

• Short Circuit Protection (SCP)

• Compact Size SO-7 Package

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

SO-7

Applications

• Switching AC/DC Adaptor

• LCD Monitor/TV Power

• Open Frame Switching Power Supply

1

2

3

4

7

6

5

BNO

SENSE

FB

GND

GATE

VCC

HV

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

HIGH VOLTAGE GREEN MODE PWM CONTROLLER

AP3107Z

Document number: DS36677 Rev. 2 - 1

2 of 11

www.diodes.com

November 2013

AP3107Z

A Product Line of

Diodes Incorporated

Pin Number

Pin Name

Function

1

BNO

Brownout Protection Pin. Connected to GND by a resistor to set the brownout level. This pin is shortened to the ground to set the maximum brownout voltage

2

FB

Voltage Feedback Pin., Connecting it with an opto-coupler to close the control loop can achieve system regulation

3

SENSE

Current Sense Pin. Connect it to sense the MOSFET current

4

GND

Ground 5 GATE

Gate drive output to drive the external MOSFET

6

VCC

Supply Voltage Pin

7

HV

Connect this pin to the positive terminal of bulk capacitor to provide start-up current for the controller. When VCC voltage reaches UVLO (on), this HV loop will be turned off to save the power loss of the start-up circuit

R10

5.1k

C10

0.1F

C4

R9

4.7k

R8 20k

C3 2nF

R4

R12 620

R7

0.5

Q1

7N60

BD1

R2

100k

V

OUT

J1

C2

100F

1 2

4 3

U2

U3 AZ431

D2

FR107

R5

510

R1 20k

C9 470F

L2 5H

D3

C8

1000F

T

HV

BNO

GATE

VCC

FB

GND

U1 AP3107Z

22F

C1

D1

C7

C6

C5

SENSE

2k

R11

0.1F

470pF

R3

R6

MBR20H100C

L1

J2

C11

D4

R13

Typical Applications Circuit

Pin Descriptions

AP3107Z

Document number: DS36677 Rev. 2 - 1

3 of 11

www.diodes.com

November 2013

AP3107Z

A Product Line of

Diodes Incorporated

Soft

Driver

18V

QBD

CLK

RB

DFF

OSC with

Frequency Dithering

2R2

OCP

0.85V

Burst Mode

PWM

OLP

OTP

VCC OVP

UVLO

16V

Internal Bias

0.3V

PG

25s Filter

4ms

Soft Start

OTP

140

℃

FOCP

35V

8.6V

R2

1.1V

VCC

6

FB

2

GND

4

SENSE

3

GATE

5

HV

7

250ns LEB

R3

R1

BNO

1

BNO Sense

Line Sense

28V

VCC OVP

OVP

2.2V

35ms Filter

OLP

BOK OFF

BOK ON/OFF

Line Sense

PG

VDD

BOK ON

R4

Functional Block Diagram

AP3107Z

Document number: DS36677 Rev. 2 - 1

4 of 11

www.diodes.com

November 2013

AP3107Z

A Product Line of

Diodes Incorporated

Parameter

Symbol

Value

Unit

Supply Voltage

VCC

30

V

Input Voltage to HV

VHV

600

V

GATE Output Current

I

GATE

500

mA

Input Voltage to FB, SENSE

VFB, V

SENSE

-0.3 to 7

V

Thermal Resistance (Junction to Ambient)

θ

JA

186

ºC /W

Power dissipation at TA<25ºC

PD

550

mW

Operating Junction Temperature

TJ

-40 to +150

ºC

Storage Temperature

T

STG

+150

ºC

ESD (Human Body Model)

–

3000

V

ESD (Machine Model)

–

300

V

Parameter

Symbol

Min

Max

Unit

Supply Voltage

VCC

10

25

V

Ambient Temperature

TA

-40

+85

ºC

Absolute Maximum Ratings (Note 4)

Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

Recommended Operating Conditions