Free Redacted Document - District Court of Delaware - Delaware

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FISH & RICHARDSON P.C.

March 25, 2008 Page 2 produce a set of schematics for the AP3710 yesterday, but BCD's counsel was unable to confirm whether it will produce clean schematics for the AP3700 variants (or confirm there are no substantive differences between them), and BCD flatly refused to produce any schematics for its AP3706 or AP3708 products. BCD's response to Power Integrations' repeated requests has been to assert that the products are not relevant because they are not for sale or being offered for sale, but the data sheet for the AP3706 is available on BCD's web site with "Ordering Information" [see, e.g., Ex. H at 4], and Power Integrations understands that BCD is actively seeking to take more business from Power Integrations by trying to design these chips into the products of major multinational customers. As a result, the product schematics are critically important to Power Integrations' case and the proper scope of the pending motion for preliminary injunction. BCD has also refused to provide substantive responses to Power Integrations' Interrogatories Nos. 2-3 regarding BCD's non-infringement and invalidity contentions with respect to the patents-in-suit. BCD asserts that these responses are premature, but BCD sued Power Integrations seeking a Declaratory Judgment of noninfringement and invalidity, and, at the very least, Power Integrations is entitled to discovery of BCD's contentions that allegedly support the allegations in its complaint. At this time, BCD's response consists solely of a reference to pending reexamination requests that Fairchild filed for the '876 and '851 patents. [See Ex. A at 4-5.] BCD has suggested that it can withhold its contentions until the September 30 cutoff date for written discovery [Ex. F at 1], but in light of the Court's determination that it would not stay discovery, there is no basis for BCD's refusal to provide contention discovery responses regarding its present contentions and to timely supplement them in accordance with FRCP 26(e). Power Integrations believes the Court would see numerous other deficiencies in a quick review of BCD's discovery responses, but we must at this time rely on BCD's stated commitment to supplement its other responses and to produce documents on April 1. Nevertheless, without BCD's schematics and contentions, Power Integrations is at a severe disadvantage with respect to the pending motions and cannot begin any follow-up discovery. As a result, Power Integrations respectfully requests that the Court order BCD to produce these materials as soon as possible.
Respectfully, /s/Kyle Wagner Compton Kyle Wagner Compton

cc:

Clerk of Court (w/attachment via ECF) Steven J. Balick, Esquire (By Hand) Erik Puknys, Esquire (By Federal Express)

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Exhibit A

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Exhibit B

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Exhibit C

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Exhibit D

Case 1:07-cv-00633-JJF-LPS
Sharon Bradley
From: Sent: To: Cc: Michael Headley Tuesday, March 11, 2008 6:43 PM 'Puknys, Erik'

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'Yoches, Bob'; 'Burns, Robert'; Howard Pollack

Subject: RE: PI/BCD: BCD supplemental discovery responses and production Erik, Thank you for your call today regarding the status of BCD's discovery responses and production; I look forward to receiving your supplemental responses this Friday. Because it sounds as though you presently have people working with your client to collect documents, I wanted to follow up to confirm our discussion regarding the types of documents we expect to receive in the near term for purposes of addressing the pending motions. Per our call, we believe that BCD' communications with Samsung and its s cell phone charger subcontractors (including DongYang, RF Tech., H&T, HAEM, Dongwon, Dreamtech, Unitron, and Foxlink), sales records/point of sale information, distributor agreements and communications with distributors (including Future Electronics, Segyung BriteStone, ICT, and Tong Baek Trading Co.), and the schematics for the Accused Parts (AP3700 and variants, AP3710, and any other controllers with substantially identical frequency jitter functionality) are all highly relevant, responsive, and bear on the pending motions. This list is not exhaustive, but I hope it helps to expedite your production, as we still have not received any documents following the responses served last month. I appreciate your attention to this matter. Sincerely, Michael Michael R. Headley Fish & Richardson P.C. 500 Arguello St., Suite 500 Redwood City, CA 94063-1526 (650) 839-5139 (direct) (650) 839-5071 (fax) **************************************************************************************************************************** This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized use or disclosure is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. IRS CIRCULAR 230 DISCLOSURE: Any U.S. tax advice contained in this communication (including any attachments) is not intended or written to be used, and cannot be used, for the purpose of (i) avoiding penalties under the Internal Revenue Code or (ii) promoting, marketing or recommending to another party any transaction or matter addressed herein. ****************************************************************************************************************************

3/25/2008

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Exhibit E

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 General Description
The AP3706 is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The AP3706 provides constant voltage, constant current (CV/CC) regulation without requiring an optocoupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining stability. The AP3706 achieves excellent regulation and high power efficiency, the no-load power consumption is less than 200mW at 265VAC input. The AP3706 is available in SOIC-8 package.

Features
· · · · · · · · · · Primary Side Control for Rectangular Constant Current and Constant Voltage Output Eliminates Opto-Coupler and Secondary CV/CC Control Circuitry Eliminates Control Loop Compensation Circuitry Flyback Topology in DCM Operation Random Frequency Modulation to Reduce System EMI Valley Turn on of External Power NPN Transistor Built-in Soft Start Open Circuit Protection Over Voltage Protection Short Circuit Protection

Applications
· · Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Apparatus Standby and Auxiliary Power Supplies

SOIC-8

Figure 1. Package Type of AP3706

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Pin Configuration
M Package (SOIC-8)
CS VCC OUT GND 1 2 3 4 8 7 6 5 COMP BIAS VDD FB

Figure 2. Pin Configuration of AP3706 (Top View)

Pin Description
Pin Number 1 2, 3 4 5 6 7 8 Pin Name CS VCC OUT GND FB VDD BIAS COMP The primary current sense Supply voltage This pin drives the base of external power NPN switch Ground The voltage feedback from the auxiliary winding The 5V output of the internal voltage regulator This pin sets the bias current inside AP3706 with an external resistor to GND This pin connects a bypass capacitor for CC function Function

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Functional Block Diagram
VCC

UVLO

FB
0.1V COMP pfm

OVP & OCkP

pro

VDD
Regulator & Bias UVLO

Tonsec Detector

Tons

BIAS

EA 4.0V Tons V+ S&H

Vea COMP V+ pfm_d Vea S t R Q CV_ctrl pfm Driver

OUT

CS
0.5V

COMP

pfm

LEB Delay 430ns

pfm_d

COMP 0.46V I Tons CC_ctrl VDD

COMP

3.75V

COMP

R

Q

GND

S 0.75*I

Figure 3. Functional Block Diagram of AP3706

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Ordering Information
AP3706 -

E1: Lead Free Circuit Type TR: Tape and Reel Blank: Tube Package M: SOIC-8

Package SOIC-8

Temperature Range -40 to 85oC

Part Number AP3706M-E1 AP3706MTR-E1

Marking ID 3706M-E1 3706M-E1

Packing Type Tube Tape & Reel

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Absolute Maximum Ratings (Note 1)
Parameter Supply Voltage VCC Voltage at CS, BIAS, OUT, VDD, COMP to GND FB input (Pin 5) Output Current at OUT Power Dissipation at TA=25oC Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10s) Thermal Resistance Junction-to-Ambient ESD (Machine Model) Value -0.3 to 30 -0.3 to 7 -40 to 10 Internally limited 0.657 150 -65 to 150 300 190 200 Unit V V V A W
oC o

C

oC oC/W

V

Note 1: 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.

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Electrical Characteristics
(VCC=15V, TA=25oC, unless otherwise specified.)
Parameter UVLO SECTION Start-up Threshold Minimal Operating Voltage VTH (ST) VOPR(min) After turn on RBIAS=200k, Before turn on 17 6.7 18.5 7.4 20 8.1 V V Symbol Conditions Min Typ Max Unit

REFERENCE VOLTAGE SECTION BIAS Pin Voltage VDD Pin Voltage STANDBY CURRENT SECTION Start-up Current Operating Current DRIVE OUTPUT SECTION OUT Maximum Current Sink Source CURRENT SENSE SECTION Current Sense Threshold Pre-Current Sense Leading Edge Blanking FEEDBACK INPUT SECTION Feedback Threshold Enable Turn-on Voltage VFB VFB(EN) 3.90 -0.9 4.00 -0.7 4.10 -0.5 V V VCS VCS(PRE) 480 440 500 460 430 520 480 mV mV ns IOUT RBIAS=200k 50 25 30 mA IST ICC(OPR) VCC = VTH (ST)-0.5V, RBIAS=200k, Before turn on RBIAS=200k 70 680 80 900 µA µA VBIAS VDD 1.170 4.75 1.205 5.0 1.240 5.25 V V

COMP THRESHOLD VOLTAGE SECTION Turn-on Threshold Voltage PROTECTION SECTION Over Voltage Protection VFB(OVP) 7 8 9 V VCOMP 3.42 3.60 3.78 V

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Typical Performance Characteristics

19.5

100 90 80

19.0

Start-up Voltage (V)

Startup Current (µA) RBIAS=200k

18.5

70 60 50 40 30 20 -40

18.0

17.5

17.0

RBIAS=200k
-20 0 20 40 60
o

16.5 -40

-20

0

20

40

60
o

80

100

120

80

100

120

Ambient Temperature ( C)

Ambient Temperature ( C)

Figure 4. Start-up Voltage vs. Ambient Temperature

Figure 5. Start-up Current vs. Ambient Temperature

800 750 700 650 600 550 500 450 400 -40

5.20 5.15 5.10 5.05

Operating Current (µA)

VDD (V) RBIAS=200k
-20 0 20 40 60
o

5.00 4.95 4.90 4.85 4.80 -40

80

100

120

-20

0

20

40

60
o

80

100

120

Ambient Temperature ( C)

Ambient Temperature ( C)

Figure 6. Operating Current vs. Ambient Temperature

Figure 7. VDD vs. Ambient Temperature

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Typical Performance Characteristics (Continued)

120 110 100 90 80 70 60 50 40 100

80 70 60

Start-up Current (µA))

Out Source Current (µA)
o

50 40 30 20 10 0 100

TA=25 C
150 200 250 300 350 400

TA=25 C
150 200 250 300 350 400

o

Bias Resistor (k)

Bias Resistor (k)

Figure 8. Start-up Current vs. Bias Resistor

Figure 9. OUT Source Current vs. Bias Resistor

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Operation Description
Bridge VIN Vg + C1 LM NP VS NS D1 IS + CO VO IO

Q1
OUT

VAUX NAUX IP

AP3706
FB GND CS

RCS

Figure 10. Simplified Flyback Converter Controlled by AP3706

Figure 10 illustrates a simplified flyback converter controlled by AP3706. Constant Primary Peak Current The primary current ip(t) is sensed by a current sense resistor RCS as shown in Figure 10. The current rises up linearly at a rate of:

The energy stored in the magnetizing inductance LM each cycle is therefore:

Eg =

1 LM Ipk 2 2

................(3)

So the power transferring from the input to the output is given by:

dip (t ) vg (t ) = dt LM

................(1)

P=

1 LM Ipk 2 f SW 2

................(4)

See equation 2

Where the fsw is the switching frequency. When the peak current Ipk is constant, the output power depends on the switching frequency fsw. Constant Voltage Operation The AP3706 captures the auxiliary winding feedback voltage at FB pin and operates in constant-voltage (CV) mode to regulate the output voltage. Assuming the secondary winding is master, the auxiliary winding is slave during the D1 on-time. The auxiliary voltage is given by:

Ip 0A

Figure 11. Primary Current Waveform

As illustrated in Figure 11, when the current ip(t) rises up to Ipk, the switch Q1 turns off. The constant peak current is given by:

Vcs Ipk = Rcs
Mar. 2008 Rev. 1.1

................(2)

VAUX =

N AUX (Vo + Vd ) NS

................(5)

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Operation Description (Continued)
Where the Vd is the diode forward drop voltage.
See equation 5

The relationship between the output constant-current and secondary peak current Ipks is given by:

Iout =

1 Tons ................(7) Ipks 2 Tons + Toffs

0V 2/3 Tons Tons

At the instant of D1 turn-on, the primary current transfers to the secondary at an amplitude of:

Ipks =

NP Ipk NS

................(8)

Figure 12. Auxiliary Voltage Waveform

The output voltage is different from the secondary voltage in a diode forward drop voltage. The diode drop voltage depends on the current. If the secondary voltage is always detected at a constant secondary current, the difference between the output voltage and the secondary voltage will be a fixed Vd. The voltage detection point is at two-thirds of the D1 on-time. The CV loop control function of AP3706 then generates a D1 off-time to regulate the output voltage. Constant Current Operation The AP3706 is designed to work in constant-current (CC) mode. Figure 13 shows the secondary current waveforms.
See equation 8

Thus the output constant-current is given by:

Iout =

1 NP Tons 2 N Ipk = P Ipk 2 NS Tons + Toffs 7 N S ................(9)

Leading Edge Blanking When the power switch is turned on, a turn-on spike will occur on the sense-resistor. To avoid falsetermination of the switching pulse, a 430ns leadingedge blanking is built in. During this blanking period, the current sense comparator is disabled and the gate driver can not be switched off. CCM Protection The AP3706 is designed to operate in discontinuous conduction mode (DCM) in both CV and CC modes. To avoid operating in continuous conduction mode (CCM), the AP3706 detects the falling edge of the FB input voltage on each cycle. If a 0.1V falling edge of FB is not detected, the AP3706 will stop switching. OVP & OCkP The AP3706 includes output over-voltage protection (OVP) and open circuit protection (OCkP) circuitry as shown in Figure 14. If the voltage at FB pin exceeds 8V, 100% above the normal detection voltage, or the -0.7V falling edge of the FB input can not be monitored, the AP3706 will immediately shut off and enters hiccup mode. The AP3706 sends out a fault detection pulse every 8ms in hiccup mode until the fault has been removed. BCD Semiconductor Manufacturing Limited 9

Is
0A Tons Toffs

Iout

Figure 13. Secondary Current Waveform

In CC operation, the CC loop control function of AP3706 will keep a fixed proportion between D1 ontime Tons and D1 off-time Toffs by discharging or charging the capacitance connected in COMP pin. The fixed proportion is

Tons 4 = Toffs 3
Mar. 2008 Rev. 1.1

................(6)

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Operation Description (Continued)

FB COMP 8V R Q pro

S COMP -0.7V Timer_8ms

UVLO

Figure 14. OVP and OCkP Function Block

Typical Application
Bridge T1 D2 5V/1A VO+ + J1 AC 85-264V C1 R1 R6 C2 + Z1 D1 C6 +

VOR2 Q1

CS

VCC

OUT
R9 C5

R3

AP3706
BIAS GND COMP FB VDD
R7 R10

R11

R4

R5

C3

C4

R8

Figure 15. 5V/1A Output for Battery Charger of Mobile Phone

Mar. 2008 Rev. 1.1 10

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Preliminary Datasheet PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706 Mechanical Dimensions SOIC-8 Unit: mm(inch)

4.700(0.185) 5.100(0.201) 7°

1.350(0.053) 1.750(0.069)

0.320(0.013)

8°

7°

8°

0.675(0.027) 0.725(0.029)

D

5.800(0.228) 6.200(0.244)
D 20:1

1.270(0.050) TYP

0.100(0.004) 0.300(0.012) R0.150(0.006)

0.800(0.031)
0.200(0.008)

1.000(0.039) 3.800(0.150) 4.000(0.157)

0° 8°

0.330(0.013) 0.510(0.020)

0.190(0.007) 0.250(0.010) 0.900(0.035)

1° 5°
R0.150(0.006)

0.450(0.017) 0.800(0.031)

Mar. 2008 Rev. 1. 1 11

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