Fairchild FSL206MR service manual

FSL206MR Green Mode Fairchild Power Switch (FPS™)

FSL206MR — Green Mode Fairchild Power Switch (FPS™)

June 2012

Features

 Internal Avalanche-Rugged SenseFET: 650V  Precision Fixed Operating Frequency: 67kHz  No-Load <150mW at 265V

<25mW with Bias Winding for FSL206MR, <30mW with Bias Winding for FSL206MRBN

without Bias Winding;

AC

 No Need for Auxiliary Bias Winding  Frequency Modulation for Attenuating EMI  Line Under-Voltage Protection (LUVP)  Pulse-by-Pulse Current Limiting  Low Under-Voltage Lockout (UVLO)  Ultra-Low Operating Current: 300µA  Built-In Soft-Start and Startup Circuit  Various Protections: Overload Protection (OLP),

Over-Voltage Protection (OVP), Thermal Shutdown (TSD), Abnormal Over-Current Protection (AOCP) Auto-Restart Mode for All Protections

Applications

 SMPS for STB, DVD, and DVCD Player  SMPS for Auxiliary Power

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Description

The FSL206MR integrated Pulse-Width Modulator (PWM) and SenseFET is specifically designed for highperformance offline Switched-Mode Power Supplies (SMPS) with minimal external components. This device integrates high-voltage power regulators that combine an avalanche-rugged SenseFET with a Current-Mode PWM control block.

The integrated PWM controller includes: 7.8V regulator for no bias winding, Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, EMI attenuator, Thermal Shutdown (TSD) protection, temperature-compensated precision current sources for loop compensation, and fault-protection circuitry such as; Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal OverCurrent Protection (AOCP), and Line Under-Voltage Protection (LUVP). During startup, the FSL206MR offers good soft-start performance.

The internal high-voltage startup switch and the BurstMode operation with very low operating current reduce the power loss in Standby Mode. As a result, it is possible to reach power loss of 150mW with no-bias winding and 25mW (for FSL206MR) or 30mW (for FSL206MRBN) with bias winding at no-load condition when the input voltage is 265V

AC

.

Ordering Information

FSL206MR — Green Mode Fairchild Power Switch (FPS™)

(1)

Output Power Table

Part

Number

FSL206MRN

Operating

Temperature

Top Mark PKG

8-DIP

Packing

Method

Current

Limit

R

FSL206MR

-40 ~ 115°C

Rail 0.6A 19 12W 7W FSL206MRL 8-LSOP

FSL206MRBN L206MRB 8-DIP

Notes:

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

2. 230V

or 100/115VAC with doubler. The maximum power with CCM operation.

AC

3. Maximum practical continuous power in an open-frame design at 50°C ambient.

Application Diagram

AC

IN

DC

OUT

Drain

V

STR

LS

PWM

V

FB

GND

CC

AC

IN

LS

PWM

V

FB

DS(ON),MAX

Drain

V

STR

GND

V

CC

230V ±15%

Open

Frame

AC

(2)

(3)

265VAC

Frame

85 ~

Open

DC

OUT

(3)

(a) With Bias Winding (b) Without Bias Winding

Internal Block Diagram

Figure 1. Typical Application

Figure 2. Internal Block Diagram

Pin Configuration

Figure 3. Pin Configuration

Pin Definitions

Pin # Name Description

1 GND

2 VCC

3 VFB

4 LS

5 V

6, 7, 8 Drain

Ground. SenseFET source terminal on primary side and internal control ground. Positive Supply Voltage Input. Although connected to an auxiliary transformer winding,

current is supplied from pin 5 (V

Diagram section). It is not until V

) via an internal switch during startup (see Internal Block

STR

reaches the UVLO upper threshold (8V) that the internal

CC

startup switch opens and device power is supplied via the auxiliary transformer winding. Feedback Voltage. Non-inverting input to the PWM comparator, with a 0.11mA current source

connected internally and a capacitor and opto-coupler typically connected externally. There is a delay while charging external capacitor CFB from 2.4V to 5V using an internal 2.7A current source. This delay prevents false triggering under transient conditions, but allows the protection mechanism to operate under true overload conditions.

Line Sense Pin. This pin is used to protect the device when the input voltage is lower than the

rated input voltage range. If this pin is not used, connect to ground.

Startup. Connected to the rectified AC line voltage source. At startup, the internal switch

supplies internal bias and charges an external storage capacitor placed between the VCC pin

STR

and ground. Once V

reaches 8V, all internal blocks are activated. After that, the internal high-

CC

voltage regulator (HV REG) turns on and off irregularly to maintain V

Drain. Designed to connect directly to the primary lead of the transformer and capable of

switching a maximum of 650V. Minimizing the length of the trace connecting these pins to the transformer decreases leakage inductance.

FSL206MR — Green Mode Fairchild Power Switch (FPS™)

at 7.8V.

CC

FSL206MR — 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. T

Symbol Parameter Min. Max. Unit

V

STR

VDS Drain Pin Voltage -0.3 650.0 V

VCC Supply Voltage 26 V

VLS LS Pin Voltage -0.3

VFB Feedback Voltage Range -0.3

IDM Drain Current Pulsed

EAS Single-Pulsed Avalanche Energy

PD Total Power Dissipation 1.3 W

TJ Operating Junction Temperature -40 +150 °C

TA Operating Ambient Temperature -40 +125 °C

T

Storage Temperature -55 +150 °C

STG

ESD

Notes:

4. VFB is clamped by internal clamping diode (13V I V

< VFB < VCC.

SD

5. Repetitive rating: pulse-width limited by maximum junction temperature.

6. L=21mH, starting T

Pin Voltage -0.3 650.0 V

STR

(5)

1.5 A

(6)

Human Body Model, JESD22-A114 4

Charged Device Model, JESD22-C101 2

=25°C.

J

= 25°C unless otherwise specified.

A

Internally Clamped

Voltage

Internally Clamped

Voltage

(4)

V

11 mJ

KV

CLAMP_MAX

< 100A). After shutdown, before VCC reaching V

STOP

,

Thermal Impedance

TA=25°C unless otherwise specified.

Symbol Parameter Value Unit

JA Junction-to-Ambient Thermal Impedance

Notes:

7. JEDEC recommended environment, JESD51-2 and test board, JESD51-10 with minimum land pattern for 8DIP and JESD51-3 with minimum land pattern for 8LSOP.

(7)

93 °C/W

FSL206MR — Green Mode Fairchild Power Switch (FPS™)

Electrical Characteristics

TA = 25°C unless otherwise specified.

Symbol Parameter Condition 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

DS(ON)

C

Input Capacitances VGS = 0V, VDS = 25V, f = 1MHz 162 pF

iSS

C

Output Capacitance VGS = 0V, VDS = 25V, f = 1MHz 14.9 pF

OSS

C

Reverse Transfer Capacitance VGS = 0V, VDS = 25V, f = 1MHz 2.7 pF

RSS

tr Rise Time VDS = 325V, ID = 0.5A, RG = 25 6.1 ns

tf Fall Time VDS = 325V, ID = 0.5A, RG = 25 43.6 ns

Control Section

f

Switching Frequency VFB = 4V, VCC = 10V 61 67 73 KHz

OSC

f

Switching Frequency Variation -25°C < TJ < 85°C ±5 ±10 %

OSC

fM Frequency Modulation

D

Maximum Duty Cycle VFB = 4V, VCC = 10V 66 72 78 %

MAX

D

Minimum Duty Cycle VFB = 0V, VCC = 10V 0 0 0 %

MIN

V

START

V

STOP

UVLO Threshold Voltage

After Turn On 6 7 8 V

(8)

±3 KHz

IFB Feedback Source Current VFB= 0V, VCC = 10V 90 110 130 µA

t

Internal Soft-Start Time VFB = 4V, VCC = 10V 10 15 20 ms

S/S

Burst Mode Section

V

Burst-Mode HIGH Threshold Voltage

BURH

V

Burst-Mode LOW Threshold Voltage

BURL

HYS

Burst-Mode Hysteresis

BUR

Protection Section

I

Peak Current Limit

LIM

t

Current Limit Delay

CLD

(8)

100 ns

VSD Shutdown Feedback Voltage VCC = 10V 4.5 5.0 5.5 V

I

Shutdown Delay Current VFB = 4V 2.1 2.7 3.3 µA

DELAY

t

Leading-Edge Blanking Time

LEB

V

Abnormal Over-Current Protection

AOCP

V

Over-Voltage Protection VFB = 4V, VCC Increase 23.0 24.5 26.0 V

OVP

V

Line-Sense Protection On to Off VFB = 3V, VCC = 10V, VLS Decrease 1.9 2.0 2.1 V

LS_OFF

V

Line-Sense Protection Off to On VFB = 3V, VCC = 10V, VLS Increase 1.4 1.5 1.6 V

LS_ON

(8)

250 ns

TSD Thermal Shutdown Temperature

HYS

TSD Hysteresis Temperature

TSD

(8)

60 °C

VDS = 650V, VGS = 0V 50 µA

VDS = 520V, VGS = 0V, TA = 125°C

(9)

VGS = 10V, ID = 0.3A 14 19 

(8)

250 µA

VFB = 0V, VCC Sweep 7 8 9 V

= 10V,

V

CC

V

Increase

FB

= 10V,

V

CC

V

Decrease

FB

FSL206MR 0.66 0.83 1.00 V

FSL206MRB 0.40 0.50 0.60 V

FSL206MR 0.59 0.74 0.89 V

FSL206MRB 0.28 0.35 0.42 V

FSL206MR 90 mV

FSL206MRB 150 mV

= 4V, di/dt = 300mA/µs,

V

FB

V

= 10V

CC

(8)

0.7 V

(8)

125 135 150 °C

0.54 0.60 0.66 A

Continued on the following page…

Fairchild FSL206MR service manual

Specifications and Main Features

Frequently Asked Questions

User Manual