Fairchild FAN302HLMY_F117, FAN302HLMY

January 2013

FAN302HLMY_F117 PWM Controller for Low Standby Power BatteryCharger Applications — mWSaver™ Technology

FAN302HLMY_F117 — mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

Features

 mWSaver™ Technology Provides Industry’s

Best-in-Class Standby Power

- Ultra Low Power Consumption at No Load

(<10 mW at 230 V

AC

)

- Proprietary 500V High-Voltage JFET Startup

Reduces Startup Resistor Loss

- Low Operation Current in Burst Mode:

350 µA Maximum

 Constant-Current (CC) Control without Secondary-

Feedback Circuitry

 Fixed PWM Frequency at 85kHz with Frequency

Hopping to Reduce EMI

 High-Voltage Startup  Low Operating Current: 3.5 mA  Peak-Current-Mode Control with Slope

Compensation

 Cycle-by-Cycle Current Limiting  V  V  V

Over-Voltage Protection (Auto-Restart)

DD

Over-Voltage Protection (Latch Mode)

S

Under-Voltage Lockout (UVLO)

DD

 Gate Output Maximum Voltage Clamped at 15 V  Fixed Over-Temperature Protection (Latch Mode)  Available in an 8-Lead SOIC Package

Description

The FAN302HLMY_F117 advanced PWM controller significantly simplifies isolated power supply design that requires CC regulation of the output. The output current is precisely estimated with information in the primary side of the transformer and controlled with an internal compensation circuit. This removes the output current sensing loss and eliminates all external Control Circuitry (CC). The Green-Mode function, with an extremely low operating current (200 µA) in Burst Mode, maximizes the light-load efficiency, enabling conformance to worldwide Standby Mode efficiency guidelines.

Integrated protections include two-level pulse-by-pulse current limit, Over-Voltage Protection (OVP), brownout protection, and Over-Temperature Protection (OTP).

Compared with a conventional approach using an external control circuit in the secondary side for CC regulation, the FAN302HLMY_F117 can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability.

V

O

Maximum Typical Minimum

Applications

Battery Chargers for Cellular Phones, Cordless



Phones, PDAs, Digital Cameras, and Power Tools

 Replaces Linear Regulators and RCC SMPS

Figure 1. Typical Output V-I Characteristic

I

O

Ordering Information

Part Number

FAN302HLMY_F117

Operating

Temperature Range

-40°C to +105°C

Package

8-Lead, Small Outline Package (SOIC),

JEDEC MS-012, .150-Inch Narrow Body

Packing

Method

Tape & Reel

Application Diagram

FAN302HLMY_F117— mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

Internal Block Diagram

Figure 2. Typical Application

Figure 3. Functional Block Diagram

Marking Information

FAN302HLMY_F117— mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

Pin Configuration

Figure 4.Top Mark

CS

GATE

VDD

VS

Figure 5. Pin Assignments

F- Fairchild Logo

Z: Assembly Plant Code X: Year Code Y: Week Code TT: Die Run Code T: M=SOIC P: Y= Green Package M: Manufacture Flow Code

HV

NC

FB

GND

Pin Definitions

Pin # Name Description

Current Sense. This pin connects a current-sense resistor to sense the MOSFET current for

1 CS

2 GATE

3 VDD

4 VS

5 GND

6 FB

7 NC No Connect

8 HV

Peak-Current-Mode control for output regulation. The current-sense information is also used to

estimate the output current for CC regulation. PWM Signal Output. This pin has an internal totem-pole output driver to drive the power

MOSFET. It is internally clamped at 15 V. Power Supply. IC operating current and MOSFET driving current are supplied through this pin.

This pin is typically connected to an external V

Voltage Sense. This pin detects the output voltage information and diode current discharge

time based on the voltage of the auxiliary winding.

Ground Feedback. Typically, an opto-coupler is connected to this pin to provide feedback information to

the internal PWM comparator. This feedback is used to control the duty cycle in CV regulation.

High Voltage. This pin connects to the DC bus for high-voltage startup.

capacitor.

DD

FAN302HLMY_F117— mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

Absolute Maximum Ratings

Stresses exceeding the Absolute Maximum Ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

VHV HV Pin Input Voltage 500 V

V

DC Supply Voltage

VDD

VVS VS Pin Input Voltage -0.3 7.0 V

VCS CS Pin Input Voltage -0.3 7.0 V

VFB FB Pin Input Voltage -0.3 7.0 V

PD

Power Dissipation (TA=25°C)

θJA Thermal Resistance (Junction-to-Air) 150

θJC Thermal Resistance (Junction-to-Case) 39

TJ Operating Junction Temperature -40 +150

T

Storage Temperature Range -55 +150

STG

TL Lead Temperature, (Wave Soldering or IR, 10 Seconds) +260

ESD Electrostatic Discharge Capability

Notes:

1. All voltage values, except differential voltages, are given with respect to GND pin.

2. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.

3. ESD ratings including the HV pin: HBM=400 V, CDM=750 V.

(1,2)

30 V

660 mW

°C/W

°C

Human Body Model, JEDEC:JESD22_A114 (Except HV Pin)

(3)

Charged Device Model, JEDEC:JESD22_C101 (Except HV Pin)

(3)

5000

V

1500

Electrical Characteristics

VDD=15 V and TA=25°C unless noted.

Symbol Parameter Condition Min. Typ. Max. Unit

HV Section

V

Minimum Startup Voltage on HV Pin 50 V

HV-MIN

V

=100 V, VDD=0 V,

IHV Supply Current Drawn from HV Pin

I

Leakage Current Drawn from HV Pin

HV-LC

VDD Section

VOP Continuous Operation Voltage

V

Turn-On Threshold Voltage VDD Rising 15 16 17 V

DD-ON

V

Turn-Off Threshold Voltage VDD Falling 4.7 5.0 5.3 V

DD-OFF

V

Threshold Voltage for Latch-Off Release VDD Falling 2.5 V

DD-LH

I

Startup Current VDD=V

DD-ST

I

Operating Supply Current VDD=18 V, f=f

DD-OP

I

DD-BURST

V

t

D-VDDOVP

Burst-Mode Operating Supply Current VDD=8 V, C

VDD Over-Voltage Protection Level 25.0 26.5 28.0 V

DD-OVP

VDD Over-Voltage Protection Debounce Time

Oscillator Section

Center Frequency VCS=5 V, VS=2.5 V, VFB=5 V 82 85 88

f

Frequency

OSC

Hopping Range

Minimum Frequency for Continuous

f

OSC-CM-MIN

f

OSC-CCM

Conduction Mode (CCM) Prevention

(4)

Circuit

Minimum Frequency in Constant Current (CC) Regulation

Feedback Input Section

AV

Internal Voltage Scale-Down Ratio of FB

(5)

ZFB FB Pin Input Impedance 38 42 44 k

V

FB Pin Pull-Up Voltage FB Pin Open 5.3 V

FB-OPEN

V

FB-L

V

FB-H

FB Threshold to Disable Gate Drive in Burst Mode

FB Threshold to Enable Gate Drive in Burst Mode

Over-Temperature Protection Section

T

OTP

Threshold for Over-Temperature Protection (OVP)

HV

Controller Off

0.8 1.5 5.0 mA

VHV=500 V, VDD=15 V (Controller On with Auxiliary

0.8 3.0 A

Supply)

Limited by V Protection (OVP)

DD-ON

Over-Voltage

DD

25 V

– 0.16 V 400 450 A

, C

OSC

=1 nF 200 350 A

GATE

=1 nF 3.5 4.0 mA

GATE

f=85 kHz 100 180 s

±3

13 18 23 kHz

VCS=5 V, VS=0 V 23 26 29 kHz

1/3.5 1/3.0 1/2.5 V/V

VFB Falling,VCS=5 V, VS=0 V 1.2 1.4 1.6 V

VFB Rising,VCS=5 V, V

=0 V 1.3 1.5 1.7 V

S

+130 +140 +150

FAN302HLMY_F117— mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

kHz

°C

Continued on the following page…

FAN302HLMY_F117— mWSaver™ PWM Controller for Low Standby Power Battery-Charger Applications

Electrical Characteristics (Continued)

VDD=15 V and TA=25°C unless noted.

Symbol Parameter Condition Min. Typ. Max. Unit

Voltage-Sense Section

ITC Bias Current VCS=5 V 8.75 10.00 11.25 A

VS Sampling Voltage to Switch to the

V

VS-CM-MIN

V

VS-CM-MAX

V

SN-CC

V

SG-CC

S

G-CC

V

VS-OFFSET

V

VS-OVP

t

VS-OVP

Current-Sense Section

VVR

V

CCR

V

STH

V

STH-VA

tPD GATE Output Turn-Off Delay 100 150 ns

t

MIN

t

LEB

V

SLOPE

GATE Section

D

MAX

V

GATE-L

V

GATE-H

V

GATE-H

V

GATE-

CLAMP

Notes:

4. f

5. A

6. Guaranteed by design; not production tested.

Second Pulse-by-Pulse Current Limit in Power Limit Mode

VS Sampling Voltage to Switch Back to the

(6)

Normal Pulse-by-Pulse Current Limit

V

Sampling Voltage to Start Frequency

S

Decreasing in CC Mode

Vs Sampling Voltage to End Frequency Decreasing in CC Mode

Frequency Decreasing Slope of CC Regulation

ZCD Comparator Internal Offset Voltage

Output Over-Voltage Protection with V Sampling Voltage

Output Over-Voltage Protection Debounce Time

Internal Reference Voltage for CC Regulation

0.55 V

0.75 V

(6)

V

=5 V, fS1=f

CS

V

=5 V, fS2=f

CS

+2 kHz

S

= (fS1-fS2) / (V

G-CC

V

)

SG-CC

(6)

200 mV

S

2.70 2.80 2.85 V

f

=85 kHz 8 cycles

OSC

-2 kHz 2.05 2.15 2.25 V

OSC

OSC-CCM

SN-CC

0.45 0.70 0.95 V

30 38 46

2.475 2.500 2.525 V

Variation Test Voltage on CS Pin for CC Output (Non-Inverting Input of Error

V

=0.47 V 2.405 2.430 2.455 V

CS

Amplifier for CC Regulation)

Normal Current Limit Threshold Voltage 0.8 V

Second Current Limit Threshold Voltage, Power Limit Mode (V

S<VVS-CM-MAX

Minimum On Time

Leading-Edge Blanking Time

Slope Compensation

(6)

Maximum Duty Cycle 0.3 V

)

(6)

100 150 200 ns

=0.3 V 0.30 V

V

VS

V

=5 V, VVS=2.5 V,

CS

=5 V (Test Mode)

V

FB

430 530 630 ns

Maximum Duty Cycle 64 67 70 %

Output Voltage Low VDD=25 V, IO=10 mA 0 1.5 V

Output Voltage High VDD=8 V, IO=1 mA 5 8 V

Output Voltage High VDD=5.5 V, IO=1 mA 4.0 5.5 V

tr Rising Time VDD=15 V, C

tf Falling Time VDD=15 V, C

Gate Output Clamping Voltage V

OSC-CM-MIN

is a scale-down ratio of the internal voltage divider of the FB pin.

V

occurs when the power unit enters CCM operation.

=25 V 13 15 17 V

DD

=1 nF 100 140 180 ns

GATE

=1 nF 30 50 70 ns

GATE

kHz/V

Fairchild FAN302HLMY_F117, FAN302HLMY_F117 Schematics