Fairchild FSL156MRBN service manual

FSL156MRBN Green-Mode Fairchild Power Switch (FPS™)

FSL156MRBN — Green-Mode Fairchild Power Switch (FPS™)

April 2012

Features



Advanced Soft Burst-Mode Operation for Low Standby Power and Low Audible Noise

 Random Frequency Fluctuation (RFF) for Low EMI  Pulse-by-Pulse Current Limit  Various Protection Functions: Overload Protection

(OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output-Short Protection (OSP), and Under-Voltage Lockout (UVLO) with Hysteresis

 Low Operating Current (0.4mA) in Burst Mode  Internal Startup Circuit  Internal High-Voltage SenseFET: 650V  Built-in Soft-Start: 15ms  Auto-Restart Mode

Applications

 Power Supply for LCD Monitor, STB, and

DVD Combination

Description

The FSL156MRBN is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), LeadingEdge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSL156MRBN series can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform suited for cost-effective design of a flyback converter.

Ordering Information

(2)

AC

Open

Frame

Replaces

Device

(5)

FSFM300N

FSGM300

Output Power Table

Operating

Part Number Package

Junction

Temperature

FSL156MRBN 8-DIP

Notes:

1. Lead-free package per JEDEC J-STD-020B.

2. The junction temperature can limit the maximum output power.

3. 230V

4. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature.

5. Maximum practical continuous power in an open-frame design at 50C ambient temperature.

or 100/115VAC with voltage doubler.

AC

-40°C ~ +125°C

Current

Limit

1.60A

R

DS(ON)

(Max.)

2.2

230VAC ±15%

Adapter

(4)

26W 40W 20W 30W

Open

Frame

(3)

(5)

85-265V

Adapter

(4)

Application Circuit

FSL156MRBN — Green-Mode Fairchild Power Switch (FPS™)

Figure 1. Typical Application Circuit

Internal Block Diagram

Figure 2. Internal Block Diagram

Pin Configuration

FSL156MRBN — Green-Mode Fairchild Power Switch (FPS™)

1. GND

2. V

CC

8. Drain

7. Drain

FSL156MRBN

3. FB

4. N.C.

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin # Name Description

1 GND Ground. This pin is the control ground and the SenseFET source.

2 VCC

3 FB

4 N.C. No Connection

5, 6, 7, 8 Drain SenseFET Drain. High-voltage power SenseFET drain connection.

Power Supply. This pin is the positive supply input, which provides the internal operating current for both startup and steady-state operation.

Feedback. This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 7.0V, the overload protection triggers, which shuts down the FPS™.

6. Drain

5. Drain

FSL156MRBN — Green-Mode Fairchild Power Switch (FPS™)

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

V

Drain Pin Voltage 650 V

DS

V

CC

V

Feedback Pin Voltage -0.3 10.0 V

FB

I

Drain Current Pulsed 4 A

DM

I

Continuous Switching Drain Current

DS

EAS Single Pulsed Avalanche Energy

PD

T

J

T

Storage Temperature -55 +150

STG

ESD

Notes:

6. Repetitive peak switching current when the inductive load is assumed: Limited by maximum duty (D

and junction temperature (see Figure 4).

7. L=45mH, starting T

8. Infinite cooling condition (refer to the SEMI G30-88).

9. Although this parameter guarantees IC operation, it does not guarantee all electrical characteristics.

Pin Voltage 26 V

CC

1.90 A

1.27 A

1.5 W

(7)

Total Power Dissipation (TC=25C)

T

=25C

(6)

C

TC=100C

190 mJ

(8)

Maximum Junction Temperature 150

Operating Junction Temperature

Electrostatic Discharge Capability

=25C.

J

Human Body Model, JESD22-A114 5

Charged Device Model, JESD22-C101 2

(9)

-40 +125

MAX

C

kV

=0.73)

Figure 4. Repetitive Peak Switching Current

Thermal Impedance

TA=25°C unless otherwise specified.

Symbol Parameter Value Unit

JA Junction-to-Ambient Thermal Impedance

JL Junction-to-Lead Thermal Impedance

Notes:

10. JEDEC recommended environment, JESD51-2 and test board, JESD51-10 with minimum land pattern.

11. Measured on the SOURCE pin #7, close to the plastic interface.

(10)

85 °C/W

(11)

11 °C/W

FSL156MRBN — Green-Mode Fairchild Power Switch (FPS™)

Electrical Characteristics

TJ = 25C unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Unit

SenseFET Section

BV

Drain-Source Breakdown Voltage VCC = 0V, ID = 250µA 650 V

DSS

I

Zero-Gate-Voltage Drain Current

DSS

R

Drain-Source On-State Resistance VGS=10V, ID =1A 1.8 2.2 

DS(ON)

C

Input Capacitance

ISS

C

Output Capacitance

OSS

(12)

V

(12)

V

tr Rise Time V

tf Fall Time V

t

Turn-On Delay V

d(on)

t

Turn-Off Delay V

d(off)

V

= 650V, TA = 25C

DS

= 25V, V

DS

= 25V, V

DS

= 325V, ID = 4A, RG=25 26 ns

DS

= 325V, ID = 4A, RG=25 25 ns

DS

= 325V, ID = 4A, RG=25 14 ns

DS

= 325V, ID= 4A, RG=25 32 ns

DS

= 0V, f=1MHz 515 pF

GS

= 0V, f=1MHz 75 pF

GS

Control Section

f

Switching Frequency

S

f

D

MAX

D

MIN

Switching Frequency Variation

S

Maximum Duty Ratio V

Minimum Duty Ratio V

IFB Feedback Source Current V

V

START

V

STOP

t

V

RECOMM

SS

UVLO Threshold Voltage

After Turn-On, V

Internal Soft-Start Time V

Recommended VCC Range 13 23 V

(12)

V

(12)

= 14V, V

CC

-25C < T

= 14V, V

CC

= 14V, V

CC

= 0 65 90 115 µA

FB

V

= 0V, V

FB

= 40V, V

STR

= 4V 61 67 73 kHz

FB

< 125C

J

= 4V 61 67 73 %

FB

= 0V 0 %

FB

Sweep 11 12 13 V

CC

= 0V 7.0 7.5 8.0 V

FB

Sweep 15 ms

CC

Burst-Mode Section

V

BURH

V

BURL

HYS

Burst-Mode Voltage V

0.30 0.35 0.40 V

150 mV

= 14V, VFB Sweep

CC

Protection Section

I

Peak Drain Current Limit di/dt = 300mA/µs 1.45 1.60 1.75 A

LIM

V

Shutdown Feedback Voltage V

SD

I

Shutdown Delay Current V

DELAY

t

Leading-Edge Blanking Time

LEB

V

Over-Voltage Protection VCC Sweep 23.0 24.5 26.0 V

OVP

t

OSP

V

OSP

t

OSP_FB

TSD

T

HYS

Output-Short

Threshold VFB 1.8 2.0 2.2 V

Protection

V

Thermal Shutdown Temperature

Hysteresis 60

Threshold Time

(12)

FB

Blanking Time 2.0 2.5 3.0 µs

(12,14)

300 ns

(12)

= 14V, V

CC

= 14V, V

CC

Sweep 6.45 7.00 7.55 V

FB

= 4V 1.2 2.0 2.8 µA

FB

OSP Triggered when t (Lasts Longer than t

Shutdown Temperature 125 135 145

ON<tOSP

& VFB>V

OSP

OSP_FB

)

250 µA

±5 ±10 %

0.45 0.50 0.55 V

0.7 1.0 1.3 µs

C

Continued on the following page…

Fairchild FSL156MRBN service manual

Specifications and Main Features

Frequently Asked Questions

User Manual