A916CY-100M | DigiCamel IC Datasheet

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PDF pages: 23

Technical content

Datasheet sections

3.1 Setup
3.2 Checkup
7.1 Output voltage
7.2 Oscillation frequency
7.3 Soft-start time
7.4 Short-circuit detection time
8.2 Load Reguration (VIN  12 V)
8.3 Line regulation
8.4 Soft-start operation waveforms
9.3 CH3 5 V output

Evaluation Board Datasheet Cypress Semiconductor Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 002-08322 Rev. *A Revised November 22, 2016 The MB39A112 evaluation board is a surface mount circuit board with 3 channels of down conversion circuit. This evaluation board when the under voltage lockout protection circuit do operation or the short-circuit protection is detected by the protection function, the FET is turned off and the output is stopped. In addition, each channel can be controlled to be turned on and off, and can be set for a soft-start. Evaluation Board Specifications (Ta   25 C) Parameter Terminal Value UnitMin Typ Max Input voltage VIN 7 12 20 V Oscillation frequency  2115 2350 2585 kHz Output voltage CH1 VO1 1.14 1.2 1.26 V CH2 VO2 3.13 3.3 3.47 V CH3 VO3 4.75 5.0 5.25 V Ripple voltage CH1 VO1 6 12 24 mV CH2 VO2 16 33 64 mV CH3 VO3 25 50 100 mV Output current CH1 VO1 800 1200 1500 mA CH2 VO2 150 500 1000 mA CH3 VO3 150 200 300 mA Soft-start time CH1  6.3 10 18.6 ms CH2  7.8 12 22.8 ms CH3  7.8 12 22.8 ms Short-circuit detection time  430 720 1420 s

Document Number: 002-08322 Rev. *A Page 3 of 23 MB39A112EVB-01 1. Terminal Description 2. Switch Description 3. Setup and Checkup

3.1 Setup

■ Connect power-supply terminals side to the VIN and GND, and connect the VO side to required loading device  or measuring instrument. ■ Set SW1 to SW3 (CS1 to CS3) to OFF (output OFF) .

3.2 Checkup

■ Turn on VIN (power supply) , set SW1 to SW3 to ON (output ON) . The IC works normally with the following outputs :  VO1  1.2 V (Typ) , VO2  3.3 V (Typ) , VO3  5 V (Typ) Symbol Description VIN Power supply terminal VIN  7 V to 25 V (Typ 12 V) VOX DC/DC converter output terminal GND GND terminal GNDX DC/DC converter GND terminal ICGND MB39A112 GND terminal SW Name Function OPEN L

1 CS1 CH1 control Output ON Output OFF

2 CS2 CH2 control Output ON Output OFF

3 CS3 CH3 control Output ON Output OFF

Document Number: 002-08322 Rev. *A Page 4 of 23 MB39A112EVB-01 4. Component Layout ■ On-board Component Layout (Continued) CTL1 GND VIN C17 C16 FB1 FB3 CSCP FB2 CS2 CS3 R14 R15 CS L CS OPEN SW1 SGND R16 C14 C15 VCC VCCO OUT2 VH OUT1 VD1 VO1 GND1 VO2 GND2 VO3 GND3 VD2 VD3 OUT3 R13 R11 R17 R18 C10 R10 R7R1 2 C12 NC CS3 CS2 CS1 CTL2 CTL3 R1 9 CS1 C11 C13 R2 0R2 1 1234

Document Number: 002-08322 Rev. *A Page 5 of 23 MB39A112EVB-01 (Continued) Board Layout Top Side Inside GND (Layer2) Inside VIN (Layer3) Bottom Side

Document Number: 002-08322 Rev. *A Page 6 of 23 MB39A112EVB-01 5. Connection Diagram +++ VREF bias 3.5 V VR Power ON/OFF CTL Bias Voltage VH VCCO − 5 V GND Drive3 Comp.3 Pch Io = 150 mA PWM CH3 Drive2 Comp.2 Pch Io = 150 mA PWM CH2 Drive1 Comp.1 Pch Io = 150 mA PWM CH1VREF 1.0 V Error Amp110 μA VREF 1.23 V Error Amp210 μA VREF 1.23 V Error Amp310 μA 2.7 V SCP Comp. SCP UVLOOSC 2.5 V 2.0 V Step-down Step-down Step-down L priority L priority H priority H: at SCP H:UVLO release Error Amp reference (1.0 V/1.23 V) Error Amp power supply SCPComp. power supplyCharge current 1 A CS1 CS2 CS3 NC OPEN L SW1 c b a 4 23 1 AVD1 VO1 lo1 = 0.8 A to 1.5 A 1.2 V 2 μH GND1 4.7 μF C17 0.1 μF 2.2 μF MCH3312 0 Ω 0 Ω OUT1 D1 SBE001 VCCO BVD2 VO2 lo2 = 0.15 A to 1 A 3.3 V 3.3 μH GND2 4.7 μF 2.2 μF MCH3312 0 Ω R2OUT2 D2 SBE001 CVD3 VO3 lo3 = 0.15 A to 0.3 A 5.0 V 10 μH GND3 4.7 μF 2.2 μF C16 0.1 μF MCH3308 0 Ω ICGND GND R3OUT3 D3 SBS005 A a 2.2 kΩ 100 kΩ 0.1 μF CTL1 R19 0.022 μF CS1 18 kΩ 820 Ω FB1 −INE1 B b R11 4.7 kΩ R12 56 kΩ R13 36 kΩ C12 0.1 μF CTL2 R20 VIN (12 V) GND 0.01 μF CS2 C11 R14 820 Ω FB2 −INE2 C c R15 680 Ω R16 30 kΩ R17 10 kΩ C13 0.1 μF CTL3 R21 0.01 μF CS3 C14 1000 pF C15 5.1 kΩ R10 RT CT 100 pF C10 R18 1 kΩ FB3 CSCP −INE3 0.1μF R5VCC GNDO VH 0 Ω 5 6 7 L priority CH1 ON/OFF signal (L:ON, H:OFF) CH2 ON/OFF signal (L:ON, H:OFF) CH3 ON/OFF signal (L:ON, H:OFF) * : Not mounted All channels are ON state in above diagram <20 Pin>

Document Number: 002-08322 Rev. *A Page 7 of 23 MB39A112EVB-01 6. Parts List No. Symbol Part name Model name Specification Package Manu- facturer Remarks (Circuit diagram mark) Rating Rating Rating

3 Value Devia-

1M 1 I C MB39A M06 Cypress

2 Q1 Pch FET MCH3312 PD 

 20 V ID 

2.0 A   MCPH3 SANYO

3 Q2 Pch FET MCH3312 PD 

 20 V ID 

4 Q3 Pch FET MCH3308 PD 

0.8 W VGSS  20 V ID 

1.0 A   MCPH3 SANYO

8 D1 SBD SBE001 IF (AV)

 2 A VRRM

9 D2 SBD SBE001 IF (AV)

 2 A VRRM

10 D3 SBD SBS005 IF (AV)

 1 A VRRM

11 L1 Coil A916CY-

IDC1  3 A IDC2  16 m  TOKO

12 L2 Coil A916CY-

IDC1  2.57 A IDC2  21.4 m  TOKO

13 L3 Coil A916CY-

IDC1  1.49 A IDC2  41.2 m  TOKO

14 C1 Ceramic

K 25 V Temperature characteristics B

3216 TDK

15 C2 Ceramic

M 16 V Temperature characteristics B

16 C3 Ceramic

K 25 V Temperature characteristics B

17 C4 Ceramic

M 16 V Temperature characteristics B

18 C5 Ceramic

K 25 V Temperature characteristics B

Document Number: 002-08322 Rev. *A Page 8 of 23 MB39A112EVB-01