Esquema Inversor

PICREF-1 PICREF-1 SCHEMATICS

UPS System Overview In the Battery Boost circuit, the transistor pairs are connected in parallel for the purpose of handling high currents. The current transformer T2 is connected as shown to sense each pair’s current with just one transformer, i.e., to prevent it from saturating.

The UPS may be split into 4 main circuits: Input Power Factor Correction, Battery Boost, Free-Running Chopper, and Inverter. The UPS is an on-line device which normally will have the Power Factor Correction circuit feeding the Chopper, which then feeds the Inverter. If the input power should be lost, the Power Factor Correction circuit falls out of the power flow and the Battery Boost circuit automatically provides power to the Chopper.

The control for the 120V/240V relay (power switch) was not implemented. Wherever input power monitoring would take place, monitoring for 120 or 240V would also occur and switch the relay. These functions would be placed before the PFC circuit.

The Inverter is driven by the Inverter Drive circuitry, which in turn is controlled by the Inverter Control circuitry containing the microcontroller.

Power Factor Correction The Power Factor Correction circuit is provisional, so the parts listed are generic parts.

UPS circuit board (PCB) power flow is shown in Figure 1.

FIGURE 1:

From Battery

PCB POWER FLOW

Battery Boost PCB

Inverter Control Card PIC17C43, Hardware Protection

Inverter Drive Card IGBT Drivers

From Input Filter

Power Factor Correction PCB

Power Flow

PCB

Control

Other Circuitry

 1997 Microchip Technology Inc.

Free-Running Chopper PCB

H-Bridge (Inverter)

To Output Filter

page 1

page 2

AC_IN_LO

AC_IN_HI

Input Filter / Protection

B_GND

BB_I_FDBK2

BB_I_FDBK1

Q4_DRIVE

Q3_DRIVE

Q2_DRIVE

T2 ZZ3450

Q2 IRFP264

PWR_AC_IN_LO

PWR_AC_IN_HI

B_GND

Q1 IRFP264

Q4 IRFP264

C1 1uF 600V

D3 DESI 30-12A

I_GND

DC_BUS_OUT(-)

DC_BUS_OUT(+)

Transistor Pair B Push-Pull Battery Boost Circuit

Power Factor Correction

Q3 IRFP264

Transistor Pair A Push-Pull Battery Boost Circuit

L1 500uH

DESI 30-12A

D2

D1 DESI 30-12A

I_GND

C4 1uF 600V

380Vdc Bus

R5 100k 2W

R4 100k 2W

Internal to Board

External to Board

LEGEND

I_GND

C6 6100uF 350V

C5 6100uF 350V

+DC_BUSS

FIGURE 2:

Q1_DRIVE

BATTERY(+)BUS

T1 ZZ3449

Battery Boost Circuit

PICREF-1 UPS SYSTEM OVERVIEW - PAGE 1 OF 3

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc. I_GND

Q8_DRIVE

Q8_DRIVE_RET

Q7_DRIVE

Q7_DRIVE_RET

Q7 2N6770

Q6_DRIVE_RET

Q5_DRIVE_RET

Q5 2N6770

T4 ZZ9454

Q6_DRIVE

CH_GND

CH_I_FDBK1

CH_GND

CH_I_FDBK2

X2

X1

O_GND

120_OR_240

Q8 2N6770

Q6 2N6770

T5 ZZ9454

T6 ZZ3455

RYL2

RYL1

I_GND

D10 DESI 60-12A

D9 DESI 60-12A

L4 725uH

Rectifier Circuit

C9 1uF 600V

O_GND

C11 250uF 350V

C10 250uF 350V

R7 100k 2W

R6 100k 2W

RECT_WAV

FIGURE 2:

Q5_DRIVE

+DC_BUSS

Free-Running Chopper Circuit

240Vac or 120Vac Power Switch

PICREF-1

UPS SYSTEM OVERVIEW - PAGE 2 OF 3

page 3

page 4

Q11_E

Q11_G

Q11_C

Q9_E

C12 0.58uF

Q11

Q9

Q12_E

Q12_G

Q12_C

Q10_E

Q10_G

Q10_C

O_GND

Q12

C13 0.58uF

Q10

L6 300uH

C14 10uF 600V

L5 300uH

C15 10uF 600V

C16 10uF 600V

R8 5.6

C17 10uF 600V

L7 50uH

Output Filtering T7 ZZ3459

AC_OUT_LO

OUT_IFDBK2

OUT_IFDBK1

AC_OUT_HI

FIGURE 2:

Q9_G

Q9_C

RECT_WAV

IGBT H-Bridge

PICREF-1 UPS SYSTEM OVERVIEW - PAGE 3 OF 3

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

Internal to Board

External to Board

LEGEND

PWR_AC_IN_LO

PWR_AC_IN_HI

R3 25.98k R4 5.1k

D4 MDA4008

D2 MDA4008

P_GND

D3 MDA4008

D1 MDA4008 R2 375k

R1 375k

R5 29.3k C1 0.01µF

15

16

7

6

8

2

1

SIG_G

C(T)

RAMPC

I(SIN)

R(T)

MULT

P_GND

11

PWR_G

U1 UC3854 Unitrode

I(SENSE)

Vcc

13

Vcc

CLK

SHUT

VREF

OUT

OVP

INV

EA 0

C2 1µF

9

10

14

12

5

4

3

C4 1µF

P_GND

R6 10k

C3 0.47µF

D6 DESI60-06A

R7 1k

INV (To page 2) OVP (To page 2)

R8 12k

C5 0.47µF

I SENSE (To page 2)

L1 OUT (To page 2)

P_GND

R10 10k

C6 1µF

DC BUS OUT(+) (To page 2)

Q5 2N2222A

R9 4.7k

VREF (To page 2)

FIGURE 3:

L1 500µH

D5 DESI60-06A

PICREF-1

POWER FACTOR CORRECTION (PFC) – PAGE 1 OF 2

page 5

page 6

OUT

OUT

R12 100

P_GND

Internal to Board

External to Board

LEGEND

R11 20k

P_GND

GND

U2 TSC429CPA

GND

IN

VDD

P_GND

C7 1µF

D7 1N4150-1

C8 0.47µF

P_GND

500:1

T1

R13 24

Q1

R14 24

Q2

R15 24

R16 24

OVP (From page 1)

INV (From page 1)

Q3

Q4

R17 4.87k

R18 180k

R19 180k

DC BUS OUT(+) (From page 1)

R22 4.56k

R21 180k

R20 180k

C10 6100µF

C9 6100µF

R24 100k

R23 100k

C11 1µF

DC_BUS_OUT(-)

DC_BUS_OUT(+)

FIGURE 3:

I SENSE (From page 1)

VREF (From page 1)

VDD

Vcc

L1 OUT (From page 1)

PICREF-1 PFC – PAGE 2 OF 2

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

Internal to Board

External to Board

R1 523

B_GND

B_GND

VREF

BATTERY(+)BUS

B_GND

BB_SYN1

R2 37.5k

R23 69.8k

B_GND

R10 24

R22 10k

3

2

C15 0.1µF

1

R21 10k

C19 100pF

U6a 11 LM139

4

Vcc

R9 2.67k

B_GND

+

-

C9 0.01µF

R11 6.8k

B_GND

B_GND

C7 470pF

C17 10nF

C8 2700pF

C18 1µF

R8 10k

C16 10nF

Q1 2N2222A

LOW_BAT

R20 100

SS 8

C5 1µF

GND

PGND

OUT B

OUT A

10

R14 6.2 1/4W

C12 680pF

B_GND

I Lim 9

2

R25 2.49k

C6 0.47µF

VREF NL

16

U5 UC3825AN

CLK/LEB

RAMP

Ct

Rt

Vc

13

E/A OUT

INV

C11 470pF

C10 100pF

4

7

6

5

3

1

Vcc

15

Vcc

5

3

D17 1N4150-1

D15 1N4150-1

B_GND

12

14

11

R24 1.5k

4

2

D18 1N4150-1

BB_I_FDBK2

BB_I_FDBK1

Out B (To page 2)

Out A (To page 2)

VREF

D16 1N4150-1

R13 1k

R12 510

U4b 4049

U4a 4049

B_GND

R26 2.49k

B_GND

FIGURE 4:

LEGEND

FEEDBACK

R3 37.5k

PICREF-1

BATTERY BOOST (BB) CONTROL CARD – PAGE 1 OF 3

page 7

page 8

OUT B (From page 1)

OUT A (From page 1)

R15 2k

R4 2k

2

R16 1k

B_GND

C13 1µF

R5 1k

2 OUT 6

OUT 7

8 VDD

OUT 6

B_GND

GND 5

U3 TSC429CPA GND 4

IN

VDD

VDD OUT 7

8

1

C14 0.47µF

Vcc

B_GND

GND 5

U2 TSC429CPA GND 4

IN

1 VDD

C4 0.47µF

R18 5.6

R17 5.6

R7 5.6

R6 5.6

B_GND

Q4_DRIVE

Q3_DRIVE

B_GND

Q2_DRIVE

Q1_DRIVE

Q4_DRIVE

Q3_DRIVE

Q2_DRIVE

Q1_DRIVE

B_GND

Transistor Pair B Push-Pull Battery Boost Circuit

Internal to Board

External to Board

LEGEND

Transistor Pair A Push-Pull Battery Boost Circuit

Portion of Battery Boost Circuit

FIGURE 4:

B_GND

C3 1µF

Vcc

PICREF-1 BB – PAGE 2 OF 3

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc. Internal to Board

B_GND

4

CN3

CN2

B_GND LOW_BAT B_GND

2 3 4

BATTERY(+)BUS

16

BB_SYN1

3

FEEDBACK

BB_I_FDBK2

BB_I_FDBK1

B_GND

Q4_DRIVE

Q3_DRIVE

B_GND

Q2_DRIVE

Q1_DRIVE

1

15

X2

14

13

12

11

10

9

8

7

6

5

4

3

2

1

2

CN1

C2 100µF 25V

B_GND

Vcc

X1

D4 1N5615

D3 1N5615

C1 33µF 35V

I

U1 7815 O 3 R 2

1

D2 1N5615

D1 1N5615

External to Board

LEGEND

T1 ZZ3448

1

FIGURE 4:

X2

X1

R19 47 1/2w

PICREF-1

BB – PAGE 3 OF 3

page 9

page 10

+DC_BUSS

CH_GND

R1 24

R6 1k

R7 510

D5 1N985B

D6 1N985B

D7 1N985B

R5 10k

R19 100k

R18 4.7k

CH_GND

Q2 2N2222A

Vcc

4

7

6

5

3

1

SS 8

Vc

GND

PGND

OUT B

OUT A

R7 20.0

C11 680pF

10

CH_GND

I Lim 9

2

CH_GND

12

14

11

CH_GND

C4 0.47µF

VREF NL

16

U2 UC3825AN

CLK/LEB

RAMP

Ct

Rt

E/A OUT

Q2 2N2222A

R4 100

Vcc INV

C10 470pF

C10 100pF CH_GND

R3 1.5k

13

C3 1µF

5

3

4

2

CH_GND

CH_GND

CH_I_FDBK2

CH_I_FDBK1

100kHz Out B (To page 2)

100kHz Out A (To page 2)

Internal to Board

External to Board

LEGEND

D9 1N4150-1

D8 1N4150-1

U5b 4049

U5a 4049

FIGURE 5:

CH_GND

FRC_SYN1

C7 4700pF

CH_GND

15

Vcc

PICREF-1 FREE-RUNNING CHOPPER (FRC) CONTROL CARD – PAGE 1 OF 3

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

R10 2.2k 100kHz Out B (From page 1)

R8 2.2k 100kHz Out A (From page 1)

R11 1k

2

CH_GND

C12 1µF

R9 1k

2 OUT 6

OUT 7

8 VDD

CH_GND

GND 4

GND 5

U4 TSC429CPA

OUT 6

OUT 7

VDD

VDD

IN

8

1

C13 0.47µF

Vcc

CH_GND

GND 5

U3 TSC429CPA GND 4

IN

VDD

1

C6 0.47µF

T2

R15 12

R14 12

R13 12

R12 12

Q6_DRIVE_RET

Q6_DRIVE

Q7_DRIVE_RET

Q7_DRIVE

Q8_DRIVE_RET

Q8_DRIVE

Q5_DRIVE_RET

Q5_DRIVE

Q7_DRIVE_RET

Q7_DRIVE

Q5_DRIVE_RET

Q5_DRIVE

CH_GND

CH_I_FDBK1

+DC_BUSS

Q8_DRIVE_RET

Q8_DRIVE

Q6_DRIVE_RET

Q6_DRIVE

Internal to Board

External to Board

LEGEND

CH_GND

CH_I_FDBK2

Portion of Free-Running Chopper Circuit

FIGURE 5:

CH_GND

C5 1µF

Vcc

PICREF-1

FRC – PAGE 2 OF 3

page 11

page 12 Internal to Board

External to Board

LEGEND

T1 ZZ3448

4

3

2

J1

D4 1N5615

D3 1N5615

1

D2 1N5615

D1 1N5615

CH_GND

FRC_SYN1

X2

X1

C1 33µF 35V

1 I

U1 7815 O 3 R 2 C2 100µF 25V

CH_GND

Vcc

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

J2

+DC_BUSS

CH_GND

CH_I_FDBK2

CH_GND

CH_I_FDBK1

Q8_DRIVE_RET

Q8_DRIVE

Q7_DRIVE_RET

Q7_DRIVE

Q6_DRIVE_RET

Q6_DRIVE

Q5_DRIVE_RET

Q5_DRIVE

FIGURE 5:

X2

X1

R17 47 1/2 W

PICREF-1 FRC – PAGE 3 OF 3

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

ZC-

ZC+

+5V

Gnd 7

VDD

R29 1k

Out 8

Internal to Board

R27 1k

+5V

+5V

C4 0.1µF

11 10 Clr Clk Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12

9 7 6 5 3 2 4 13 12 14 15 1

33 34 35 36 37 38 39 40 9 8 7 6 5 4 3 2 28 29 30 32

R28 1k

RD7/AD16 RD6/AD14 RD5/AD13 RD4/AD12 RD3/AD11 RD2/AD10 RD1/AD9 RD0/AD8 RC7/AD7 RC6/AD6 RC5/AD5 RC4/AD4 RC3/AD3 RC2/AD2 RC1/AD1 RC0/AD0 RE2/WR RE1/OE RE0/ALE MCLR/VPP

U1 PIC17C43 RA5/TX/CK RA4/RX/DT RA3 RA2 RA1/T0CKI RA0/INT RB7 RB6 RB5/TCLK3 RB4/TCLK12 RB3/PWM2 RB2/PWM1 RB1/CAP2 RB0/CAP1 TEST OSC1/CLKIN OSC2/CLKOUT VDD VSS VSS

U9 74HC4040

31 10

19 20 1

21 22 23 24 25 26 18 17 16 15 14 13 12 11 27

ENABLE-

ENABLE+

C7 0.1µF

PWM (To page 3)

U4 CTX171 25MHz

+5V

External to Board

LEGEND

C5 0.1µF

14

U20 4N35 l

l

U19 4N35 l

195kHz

3.125MHz

C26 4.7µF 10V

POS_NEG FAULT ENABLE (To/from page 3)

ALARM

D7 D6 D5 D4 D3 D2 D1 D0 RD’ WR’ CS’ INT’

+5V

R30 47k

+5V C6 0.1µF

D10 1N4150-1

D7 D6 D5 D4 D3 D2 D1 D0 RD’ WR’ INT’ CS’

13 14 15 16 17 18 19 20 3 23 21 2 22 24 12

195kHz (To page 2)

3.125MHz (To page 2)

-5V

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 RD WR INT CS CLK DV+ DGND

R31 4.75k

R25 4.75k

Vrout

CH0 CH1 CH2 CH3 AV+ Vr+ VrV-

U5 ADC10154CIN

-5V

4 5 6 7 1 9 10 11 8

+

-

R32 4.75k

5

6

R26 4.75k

C23 330µF 10v

3

2

+5V

+

-

-12V

4

8

+12V

R24 4.75k

1

R36 100

C14 0.1µF

U16a LM158

R23 4.75k

C31 0.1µF

C13 0.1µF

U16b LM158

7

-5V

CH1 (From page 2)

CH0 (From page 2)

R37 100

C32 0.1µF

FIGURE 6:

FLT-

FLT+

U21 4N35

+5V

PICREF-1

INVERTER CONTROL (INV CRTL) CARD – PAGE 1 OF 4

page 13

page 14 1

U6a LT1013CN8

R11 2.2k

195kHz (From page 1)

3.125MHz (From page 1)

-5V

D5

D6

+

3

2

R22 1k

C22 22pF

R3 931

-12V

4

8

+12V

8

8

C10 47pF

13 U15d 74AC00 11 12

U15c 9 74AC00

10

U18c 9 7400

10

R4 100k

R5 100k

+5V

3

C24 0.1µF

4 U15b 74AC00 6 5

U15a 2 74AC00

1

C11 47pF

R6 100k

R7 100k

R20 1k

+5V

C21 0.1µF

R21 220

OSENSE_2

OSENSE_1

Q1 2N2222A

-5V

CH1 (To page 1)

+5V

D7

D8

T2

7 U6b LT1013CN8

R12 2.2k

R10 49.9

R9 1k

BB_SYNC1

5

6

PFC_SYNC2

PFC_SYNC1

FRC_SYNC2

FRC_SYNC1

BB_SYNC2

+

-

R8 82k

Internal to Board

External to Board

LEGEND

CSENSE_1

FIGURE 6:

CH0 (To page 1)

+5V

R2 931

PICREF-1 INV CRTL - PAGE 2 OF 4

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

Out of Saturation (From page 4)

R19 4.75k

4 U13b 74AC00 6 5

3 U13a 2 74AC00

1

D9 1N4150-1

Internal to Board

External to Board

LEGEND

ENABLE

R1 4.75k

+5V

T1

+5V C25 0.1µF

PWM

L1

U11a 3 2 74AC00

1

POS_NEG

U13d 11 12 74AC00

13

D2 1N5615

D1 1N5615

U13c 8 9 74AC00

10

FAULT

D4 1N5615

D3 1N5615

11

U11b 6 5 74AC00

4

U18d 12 7400

13

C29 0.1µF

1 I

I

U11d 11 12 74AC00

13

R34 1k

R33 1k

U3 7805 O 3 R 2

C27 1nF

2

1

C28 1nF

9

U17c 7486

+5V

U17a 7486

C2 2.2µF 25V

10

+5V

U2 +12V 7812 O 3 C3 R 2.2µF 2 25V

U11c 8 9 74AC00

10

+5V

C8 47µF 25V

C1 47µF 25V

1

12

8 13

R35 1k

5

3 4

I

I

L_HI

L_HI

U17d 7486

U18b 5 7400

4

U17b 7486

11

6

6

3

U8 7912 O 3 R 1

U7 7905 O 3 R 1

U18a 2 7400

1

2

2

+5V C30 0.1µF

U14c 8 9 74AC00

10

U14d 11 12 74AC00

13

U14a 3 2 74AC00

1

U14b 6 5 74AC00

4

C12 2.2µF 25V -12V

C9 2.2µF 25V -5V

Q11_DRIVE

Q9_DRIVE

Q12_DRIVE

Q10_DRIVE

FIGURE 6:

HF_BIAS2

HF_BIAS1

PICREF-1

INV CRTL – PAGE 3 OF 4

page 15

page 16

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

CN1

Q12_DRIVE

Q12_OC_ALARM

Q11_DRIVE

Q11_OC_ALARM

Q10_DRIVE

Q10_OC_ALARM

Q9_DRIVE

+12V C19 0.1µF

+5V

R16 1k

R15 1k

R14 1k

R13 1k

C20 0.1µF

C18 1nF

C17 1nF

C16 1nF

C15 1nF

10

11

3

4

9

12

2

5

U10b 4082

U10a 4082

13

1

Out of Saturation (To page 3)

4

3

2

1

4

3

2

1

4

3

2

1

CN4

CN3

CN2

4

3

2

1

4

3

2

1

4

3

2

1

Internal to Board

External to Board

LEGEND

ENABLE-

ENABLE+

FLT-

FLT+

ZC-

ZC+

HF_BIAS2

HF_BIAS1

CN7

CN6

CN5

PFC_SYNC2

PFC_SYNC1

CHP_SYNC2

CHP_SYNC1

BB_SYNC2

BB_SYNC1

CSENSE_1

OSENSE_2

OSENSE_1

FIGURE 6:

2

1

Q9_OC_ALARM

PICREF-1 INV CRTL – PAGE 4 OF 4

 1997 Microchip Technology Inc.

 1997 Microchip Technology Inc.

Q#_DRIVE

From Inverter Control Board

Internal to Board

External to Board

LEGEND

14

15

R2, R6, R10, R14 1.5k

+5Vdc

O_GND

AMP

OVP

4

U1, U2, U3, U4 EXB840

5 6

9

1

3

2

Q#_GND

C2, C6, C10, C14 33µF 35V

C1, C5, C9, C13 33µF 35V

Q#_GND

C3, C7, C11, C15 100µF 25V

3 R 2

I

1

R4, R8, R12, R16 33

O

U9, U10 U11, U12 7818

Q#_E

Q#_G

Q#_C

C4, C8, C12, C16 33µF 35V

D6, D10, D14, D18 1N5615

D5, D9, D13, D17 1N5615

The Inverter Drive Card has four (4) circuits as shown to drive each of the four Inverter H-Bridge transistors (# = 9, 10, 11, 12).

D1, D2, D3, D4 ERA34-10

Q#_GND

Note:

C17, C18, C19, C20 330pF

U5, U6, U7, U8 H11L1

R3, R7, R11, R15 1.5k

Q# of Inverter H-Bridge

D8, D12, D16, D20 1N5615

D7, D11, D15, D19 1N5615

T1, T2, T3, T4 ZZ3448

X2

X1

FIGURE 7:

To Inverter Control Board

Q#_OC_ALARM

R1, R5, R9, R13 1.5k

+12Vdc

PICREF-1

INVERTER DRIVE (INV DRV) CARD – PAGE 1 OF 2

page 17

page 18 20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

CN1

Internal to Board

External to Board

LEGEND

Q12_DRIVE

Q12_OC_ALARM

Q11_DRIVE

Q11_OC_ALARM

Q10_DRIVE

Q10_OC_ALARM

Q9_DRIVE

Q9_OC_ALARM

O_GND

+12Vdc

+5Vdc

4

3

2

1

CN2

X2

X1

4

3

2

1

4

3

2

1

CN6

CN5

Q12_E

Q12_G

Q12_C

Q11_E

Q11_G

Q11_C

Q10_E

4

Q10_C

Q10_G

CN4

CN3

Q9_E

Q9_G

Q9_C

3

2

1

4

3

2

1

FIGURE 7:

3

2

1

PICREF-1 INV DRV – PAGE 2 OF 2

 1997 Microchip Technology Inc.