AN33012UA Evaluation Board Manual Panasonic Corporation Automotive & Industrial Systems Company Semiconductor Business Division 1 AN33012UA Evaluation board (front side) S 1 G 4 Pin1-3 can short together GND VCC Pin 1-3 can short together JG 7K2 8 D 5 G 4 Pin5-8 can short together SYNC input terminal (external clock input) DCDC Channel 1 output pin SW3 TL_CTRL control switch JG 7K2 S 1 8 D 5 Pin 5-8 can short together DCDC Channel 2 output pin SW2 Channel 2 Enable control switch Upper side (high): DCDC Channel 2 ON Lower side (low): DCDC Channel 2 OFF JP2 If you connect this jumper switch, the FLAG pin will be connected to VREG(4.9V) via a 200kregister. JP1 RT resistor setting jumper SW1 Channel 1 Enable control switch Upper side (high): DCDC Channel 1 ON Lower side (low): DCDC Channel 1 OFF *)About FET and SBD, It becomes the selection parts that assume maximum output current = 2A or more. 2 AN33012UA Evaluation board (back side) This is a two layer circuit board. The back side is shown below. (The front side is shown on the previous page.) Compensation RC for Channel 2 Compensation RC for Channel 1 Feed back resistor for Channel 2 Feed back resistor for Channel 1 3 AN33012UA Evaluation board (schematic) The block diagram of the board is shown below. Vcc 1 TL_CTRL 2 Pull-up CCT CVREG VREG 11 EN2 EN1 VCC 17 8 1 9 CVCC1~3 CT 10 RFLAG 2 Timer Latch VREG PLL OVP VCC) VINT 13 TSD 15 VREF VCC_S1 L2 OCP CNT 23 22 HSD2 OVP OVP SCP SCP RRS1 3 OUTBUF_EN1 OUTBUF_EN2 PRIDRV FET2 5.0V 2 OCP RS2 RT BGR VCC_S2 24 RRS2 NMOS1 RRT1 UVLO 14 TL JPRT Ext.CLK OSC CTL 3 1 SYNC RRT3 12 1 FLAG RRT2 JPFLAG RS1 PRIDRV FET1 4 PWM ERAMP SST ERAMP SST HSD1 PWM D2 L1 5.0V D1 COUT2 COUT1 COMP2 CC2_1 CC2_2 CC2_3 19 18 21 SS2 FB2 CSS2 RC2_1 RC2_2 RC2_4 RC2_3 RC2_5 RC2_6 4 5 SS1 CSS1 7 FB1 6 COMP1 RC1_1 RC1_2 RC1_6 RC1_5 RC1_3 RC1_4 16 SGND CC1_1 CC1_2 CC1_3 20 PGND AN33012UA Evaluation board (components) The BOM of this board is shown below. Table 1 : component on the evaluation board (reference) Board Component Name Part Name Size Value Maker Description CC1_1,CC2_1 GCM1882C1H222JA01J JIS1608_[EIA0603] 2.2nF Murata Compensation Capacitor CC1_2,CC2_2 GCM1882C1H270JA01J 27pF Murata Compensation Capacitor CC1_3,CC2_3 GCM1882C1H471JA01J JIS1608_[EIA0603] 470pF Murata Compensation Capacitor CCT,CSS1,CSS2,CTL GCM188R11C104KA01J JIS1608_[EIA0603] 0.1uF Murata Setting Capacitor CVREG GCM188R71C105KA49J JIS1608_[EIA0603] 1uF Murata VREG Capacitor CVCC1,CVCC2,CVCC3 CKG57NX7R1H226MT JIS5750[EIA2220] 22F TDK COUT1,COUT2 TMK325C7226MM-T JIS322_[EIA1210] 22F TAIYO YUDEN LX1,LX2 ECH8305 -- SANYO PMOSFET L1,L2 CDRH8D43-100NC 8.3(L) x 8.3(W) 10H SUMIDA Inductor -- Panasonic 2ch DC-DC Controller 3.8(L) x 2.4(W) -- Panasonic Schottky Diode Input Capacitor Output Capacitor IC1 AN33012UA D1,D2 DB24416 RC1_1,RC2_1, RC1_5,RC2_5 ERA3AEB752V JIS1608_[EIA0603] R=7.5k Panasonic Compensation & Feedback Resistor RC1_3,RC2_3, RC1_6,RC2_6 ERJ3GEY0R00V JIS1608_[EIA0603] R=0 Panasonic Compensation & Feedback Resistor RC1_2,RC2_2 ERA3AEB152V JIS1608_[EIA0603] R=1.5k Panasonic Compensation & Feedback Resistor RC1_4,RC2_4 ERA3AEB303V JIS1608[EIA0603] R=30k Panasonic Compensation & Feedback Resistor RFLAG ERA3AEB204V JIS1608_[EIA0603] R=200k Panasonic Pull-up Resistor RMOS1-2 ERJ3GEY0R00V JIS1608_[EIA0603] R=0 Panasonic RRT1 ERA3AEB134V JIS1608_[EIA0603] R=130k Panasonic OSC Setting Resistor RRS1,RRS2 ERJ8BWFR011V R=11m Panasonic OCP Sense Resistor Note: The specifications of the BOM are reference values. Other components might be mounted depending on target values of output voltage, frequency, etc. 5 Request for your special attention and precautions in using the technical information and semiconductors described in this book (1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. 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