View MP1530DQ_947088.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TM
EV0055 (MP1530)
Triple Output Step-Up Plus Charge Pump for TFT Bias
EVALUATION BOARD
The Future of Analog IC Technology
TM
DESCRIPTION
The EV0055 evaluation board is designed to demonstrate the capabilities of MPS' MP1530 triple output step-up converter which is capable of powering a TFT panel from a regulated 3.3V or 5V. The MP1530 includes a 1.4MHz fixed-frequency step-up converter and a positive and negative linear regulator. The linear regulators are powered from a charge-pump driven by the step-up converter switch node (SW). A single on/off control enables all 3 outputs. The outputs are internally sequenced at power on and power off for ease of use. An internal soft-start prevents overloading the input source at startup. Cycle-by-cycle over current protection limits component overstress.
FEATURES
* * * 2.7 to 5.5V Operating Input Range 2.8A Switch Current Limit 3 Outputs In Single Package * Step-Up Converter up to 22V * Positive 20mA Linear Regulator * Negative 20mA Linear Regulator 250m Internal Power MOSFET Switch Up to 95% Efficiency 1A Shutdown Mode Fixed 1.4MHz Frequency Positive Regulator up to 38V Negative Regulator down to -20V Internal Power-On Sequencing Adjustable Soft-Start/Fault Timer Thermal Shutdown Cycle-by-Cycle Over Current Protection Under Voltage Lockout Ready Flag TFT LCD Displays Portable DVD Players Tablet PCs Car Navigation Displays
ELECTRICAL SPECIFICATIONS
Parameter Input Voltage Output Voltage 1 Output Current 1 Output Voltage 2 Output Current 2 Output Voltage 3 Output Current 3 Symbol VIN VMAIN IMAIN VGH IGH VGL IGL Value 2.7 - 5.5 +13 350 +27 20 -8.5 20 Units V V mA V mA V mA
* * * * * * * * * * * * * * * *
APPLICATIONS
"MPS" and "The Future of Analog IC Technology" are Trademarks of Monolithic Power Systems, Inc.
EV0055 EVALUATION BOARD
Efficiency vs Load Current
100 90 VIN=5V VIN=3.3V (Step-Up Converter Only)
EFFICIENCY (%)
80 70 60 50 40
Dimensions (2.4"X x 2.3"Y x 0.4"Z) Board Number EV0055
EV0055 Rev. 1.3 8/22/2005
30
MPS IC Number MP1530DQ
1
10 100 LOAD CURRENT (mA)
1000
MP1530_EC01
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
1
TM
EV0055 (MP1530) TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS EVALUATION BOARD
EVALUATION BOARD SCHEMATIC
C4 0.1F C10 0.1F C11 0.1F C21 NS C9 0.1F C12 0.1F D5 BAS40-04-7
D4 BAS40-04-7 D2 NS
C20 NS
D3 BAS40-04-7
C5 0.1F
VGH GND
R11 C18 0 330pF U1 VMAIN GND D1 1N5819HW C15 NS C8 10F 25V L1 4.7F 2.3A C2 10nF R2 100k
4 FB1 COMP GND 16 PGND 15 IN3 14 GH 13 IN2 12 11 10
R8 205k VGL EN GND
1 2 3
GL
SW CT RDY EN
R9 10k R4 68.1k R10 C17 0 330pF
MP1530
FB3
C13 1F 50V
RDY R6 93.1k
FB2 REF 8
9
5
IN 6
R7 10k
7
VIN GND C14 NS C1 10F 6.3V C19 NS R3 6.8k C3 10nF
C16 0.1F
R5 10k C7 0.1F
R1 100k C6 1F 25V
MP1530_S01
EV0055 Rev. 1.3 8/22/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
2
TM
EV0055 (MP1530) TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS EVALUATION BOARD
EV0055 BILL OF MATERIALS
Qty 1 2 Ref C1 C2, C3 C4, C5, C7, C9, C10, C11, C12, C16 C6 C8 C13 C14, C15, C19, C20, C21 C17, C18 D1 D2 D3, D4, D5 L1 R1, R2 R3 R4 R5, R7, R9 R6 R8 R10, R11 U1 4.7H NS Value 10F 10nF Description Ceramic Capacitor, 6.3V, X5R Ceramic Capacitor, 50V, X7R Package 1210 0805 Manufacturer P/N Distributor P/N Panasonic: ECJ-4YB1A106K Panasonic: ECJ-2VB1H103K Panasonic: ECJ-2YB1H104K Panasonic: ECJ-3YB1E105K Panasonic: ECJ-4YB1E106M TDK: C3225X7R1H105K Digikey: PCC2170CT-ND Digikey: PCC103BNCT-ND Digikey: PCC1840CT-ND Digikey: PCC1893CT-ND Digikey: PCC2243CT-ND Digikey: 445-1430-1-ND
8
0.1F
Ceramic Capacitor, 50V, X7R
0805
1 1 1 5 2 1 1 3 1 2 1 1 3 1 1 2 1
1F 10F 1F NS 330pF
Ceramic Capacitor, 25V, X7R Ceramic Capacitor, 25V, X5R Ceramic Capacitor, 50V, X7R Not Stuffed Ceramic Capacitor, 50V, NPO Schottky Diode, 40V, 1A Not Stuffed Schottky Diodes, Dual, 40V, 200mA 2.26A, SMD, Unshielded
1206 1210 1210
Panasonic: ECJ-2VC1H331J Diodes Inc: SOD-123 1N5819HW-7 0805 Diodes Inc: BAS40-04-7 Toko: 817FY-4R7M=P3 Panasonic: ERJ-6GEYJ104V Panasonic: ERJ-6GEYJ682V Panasonic: ERJ-6ENF6812V Panasonic: ERJ-6GEYJ103V Panasonic: ERJ-6ENF9312V Panasonic: ERJ-6ENF2053V Panasonic: ERJ-6GEY0R00V MPS: MP1530DQ
Digikey: PCC471CGCT-ND Digikey: 1N5819HWDICT-ND Digikey: BAS40-04DICT-ND
SOT23
100k Resistor, 5% 6.8k Resistor, 5%
0805 0805 0805 0805 0805 0805 0805 QFN16 (3x3)
68.1k Resistor, 1% 10k Resistor, 5%
93.1k Resistor, 1% 205k Resistor, 1% 0 Resistor, 5% MP1530
Digikey: P100KACT-ND Digikey: P6.8KACT-ND Digikey: P68.1KCCT-ND Digikey: P10KACT-ND Digikey: P93.1KCCT-ND Digikey: P205KCCT-ND Digikey: P0.0ACT-ND
EV0055 Rev. 1.3 8/22/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
3
TM
EV0055 (MP1530) TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS EVALUATION BOARD
PRINTED CIRCUIT BOARD LAYOUT
Figure 1--Top Silk Layer
Figure 2--Top Layer
Figure 3--Bottom Layer
EV0055 Rev. 1.3 8/22/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
4
TM
EV0055 (MP1530) TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS EVALUATION BOARD
QUICK START GUIDE
The three output voltages of this board are set to +13V, +27V, and -8.5V. The board layout accommodates most commonly used inductors and output capacitors. 1. Attach the positive end of loads to the VMAIN, VGH and GND (for the negative output) pins, respectively. Attach negative ends of the loads to GND and VGL (for the negative output) pins. 2. Attach an input voltage 2.7V VIN 5.5V and input ground to the VIN and GND pins, respectively. 3. The demo board starts up automatically once VIN is applied due to the pull-up resistor R1. To disable the MP1530 connect the EN pin to ground. 4. During startup RDY will be left HIGH. Once the turn-on sequence is complete, this pin will be pulled LOW if all regulators exceed 80% of their specified voltages. After all regulators are turned-on, a fault in any regulator will cause RDY to go HIGH after approximately 15s. If the fault persists for more than approximately 6ms (for CT=10nF), the entire chip will shut down. 5. To adjust the output voltages: Use a 10k to 50k for the low-side resistor of each voltage divider (i.e. R7, R9 and R5). VFB1 = VFB3 = VREF = 1.25V. For the step-up converter, determine the high-side resistor R6 using the equation:
R6 = VMAIN - VFB1 VFB1 R7
Where VMAIN is the output voltage of the step-up converter. For the positive charge-pump, determine the high-side resistor R8 by the equation:
R8 = VGH - VFB3 VFB3 R9
Where VGH is the output voltage of the positive linear regulator. Determine the number of positive charge pump stages (NPOS) by:
NPOS = VGH + VDROPOUT - VMAIN VMAIN - 2VD
Use VDROPOUT = 1V and VD = 0.4V for Schottky diodes. For the negative charge-pump, determine the high-side resistor R4 by the equation:
R4 = - VGL VREF R5
Where VGL is the output voltage of the negative linear regulator. Determine the number of negative charge pump stages (NNEG) by:
NNEG = - VGL + VDROPOUT VMAIN - 2VD
Use VDROPOUT = 0.3V and VD = 0.4V for Schottky diodes.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications.
EV0055 Rev. 1.3 8/22/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
5

▲Up To Search▲

Price & Availability of MP1530DQ

	To Download MP1530DQ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .