Conductive Polymer Hybrid Aluminum Electrolytic Capacitor: Proposed Solutions

We would like to introduce examples of Panasonic hybrid capacitors adopted by customers.

Component proposal flow

STEP❶
Confirm information on power elements used by the customer.

Please give us information on the power circuits and related components you are using.

[Power circuit] input voltage, output voltage, load current, switching frequency, etc.
[Components used] power IC, capacitor, inductor, etc.

STEP❷
Choosing a capacitor

Based on design information given by the customer, we choose a capacitor that best fits the customer’s product.

STEP❸
Examining the capacitor

Based on the chosen capacitor and information on power elements used by the customer, we conduct a simulation for a circuit in which the capacitor will operate under using service conditions specified by the user.

STEP❹
Propose an optimum capacitor

After analyzing simulation results, we propose an optimum capacitor.

Choose a capacitor as a solution for a problem the customer needs to clear.

Case 1: Space saving in the board mounting area by reducing the number of output capacitors

STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin 24V
Output voltage Vout 12V
Load current 10A
Switching frequency 300kHz
Response to load transient current
Rising 1A→10A
Falling 10A→1A
Through rate 10A/us
STEP❷ Choosing a capacitor

■Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current

＜Evaluation results＞

Present product design
Series ZC
Rated voltage 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2Arms
ESR 20mΩ
Number of components 3
Space 360 mm2
Target performance
Total capacitance 1000uF
Size φ10 or less
Total ripple current 6 Arms
Total ESR 6.7mΩ
Number of components 1 or 2
Space 240 mm2
Choose a capacitor to review
Series ZK ZKU ZSU
Product number EEHZK1E471P EEHZK1E561UP EEHZS1E102UP
Rated voltage 25V 25V 25V
Capacitance 470uF 560uF 1000uF
Size φ10x10.2mm φ10x10.2mm φ10x16.5mm
Number of capacitors (estimate) 2 2 1~2
Present product design
Series ZC
Rated voltage 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2Arms
ESR 20mΩ
Number of components 3
Space 360 mm2
Target performance
Total capacitance 1000uF
Size φ10 or less
Total ripple current 6 Arms
Total ESR 6.7mΩ
Number of components 1 or 2
Space 240 mm2
Choose a capacitor to review
Series ZK ZKU ZSU
Product number EEHZK1E471P EEHZK1E561UP EEHZS1E102UP
Rated voltage 25V 25V 25V
Capacitance 470uF 560uF 1000uF
Size φ10x10.2mm φ10x10.2mm φ10x16.5mm
Number of capacitors (estimate) 2 2 1~2
STEP❸ Examining the capacitor
Capacitor
Series		 Mounting area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)		 Space
saving		 Output
voltage
Stability
ZC
25V 330uF
ø10x10.2mm
 		 224mV - 234mV - - -
ZK
(EEHZK1E471P)
25V 470uF
ø10x10.2mm

-33%

 225mV Equal to the
conventional
type		 235mV Equal to the
conventional
type		 〇 〇
ZKU
(EEHZK1E561UP)
25V 560uF
ø10x10.2mm

-33%

 214mV Improved 222mV Improved 〇 ◎
ZSU
(EEHZS1E102UP)
25V 1000uF
ø10x16.5mm

-66%

 222mV Equal to the
conventional
type		 234mV Equal to the
conventional
type		 ◎ 〇
Capacitor Series Mounting
area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)
ZC
 		 224mV - 234mV -
ZK
(EEHZK1E471P)

-33%

 225mV Equal to the
conventional
type		 235mV Equal to the
conventional
type
ZKU
(EEHZK1E561UP)

-33%

 214mV Improved 222mV Improved
ZSU
(EEHZS1E102UP)

-66%

 222mV Equal to the
conventional
type		 234mV Equal to the
conventional
type
Capacitor Series Space
saving		 Output
voltage
Stability
ZC
 - -
ZK
(EEHZK1E471P) 		〇 〇
ZKU
(EEHZK1E561UP) 		〇 ◎
ZSU
(EEHZS1E102UP) 		◎ 〇
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Reducing the number of capacitors is possible.
STEP❹ Propose an optimum capacitor
Product numberRated voltage
(V)		Capacitance
(µF)		Rated ripple current
(Arms)		Product dimensions
(mm)		Durability
EEHZS1E102UP2510004
(125℃/100kHz)		Φ10×16.5125°C/4000h
EEHZS1E102UV
(Vibration-resistant product)		2510004
(125℃/100kHz)		Φ10×16.8125°C/4000h

Case 2: Low-height app design achieved by a reduction in the size and height of output capacitors

STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin 24V
Output voltage Vout 12V
Load current 10A
Switching frequency 300kHz
Response to load transient current
Rising 1A→10A
Falling 10A→1A
Through rate 10A/us
STEP❷ Choosing a capacitor

■Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current

＜Evaluation results＞

Present product design
Series ZC
Rated voltage 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2 Arms
ESR 20 mΩ
Number of components 2
Space 240 mm2
Target performance
Total capacitance 660uF
Size 8 mm or less in height
Total ripple current 4 Arms
Total ESR 10 mΩ
Number of components -
Space -
Choose a capacitor to review
Series ZK ZKU
Product number EEHZK1E151XP EEHZKE181XUP
Rated voltage 25V 25V
Capacitance 150uF 180uF
Size Ø6.3x7.7 mm Ø6.3x7.7 mm
Number of capacitors (estimate) 5 4
Present product design
Series ZC
Rated voltage 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2 Arms
ESR 20 mΩ
Number of components 2
Space 240 mm2
Target performance
Total capacitance 660uF
Size 8 mm or less in height
Total ripple current 4 Arms
Total ESR 10 mΩ
Number of components -
Space -
Choose a capacitor to review
Series ZK ZKU
Product number EEHZK1E151XP EEHZKE181XUP
Rated voltage 25V 25V
Capacitance 150uF 180uF
Size Ø6.3x7.7 mm Ø6.3x7.7 mm
Number of capacitors (estimate) 5 4
STEP❸ Examining the capacitor
Capacitor
Series		 Mounting area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)		 Space
saving		 Output
voltage
Stability
ZC
25V 330uF
ø10x10.2mm
 		 255mV - 260mV - - -
ZK
(EEHZK1E151XP)
25V 150uF
ø6.3x7.7mm

+10%

 249mV Improved 251mV Improved × 〇
ZKU
(EEHZKE181XUP)
25V 180uF
ø6.3x7.7mm

-10%

 250mV Improved 253mV Improved 〇 〇
Capacitor Series Mounting
area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)
ZC
 		 255mV - 260mV -
ZK
(EEHZK1E151XP)

+10%

 249mV Improved 251mV Improved
ZKU
(EEHZKE181XUP)

-10%

 250mV Improved 253mV Improved
Capacitor Series Space
saving		 Output
voltage
Stability
ZC
 - -
ZK
(EEHZK1E151XP) 		× 〇
ZKU
(EEHZKE181XUP) 		〇 〇
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Replacing the current capacitor with a smaller capacitor in size is possible.
STEP❹ Propose an optimum capacitor
Product numberRated voltage
(V)		Capacitance
(µF)		Rated ripple current
(Arms)		Product dimensions
(mm)		Durability
EEHZKE181XUP251801.8
(125℃/100kHz)		Φ6.3×7.7125°C/4000h
EEHZKE181XUV
(Vibration-resistant product)		251804
(125℃/100kHz)		Φ6.3×7.7125°C/4000h

Case 3: Space saving in the board mounting area by a reduction in the size of output capacitors

STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin 24V
Output voltage Vout 12V
Load current 10A
Switching frequency 300kHz
Response to load transient current
Rising 1A→10A
Falling 10A→1A
Through rate 10A/us
STEP❷ Choosing a capacitor

■ Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current

＜Evaluation results＞

Present product design
Series ZC
Rated voltage 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2 Arms
ESR 20 mΩ
Number of components 3
Space 360 mm2
Target performance
Total capacitance 1000uF
Size φ10 or less
Total ripple current 6 Arms
Total ESR 6.7 mΩ
Number of components 3
Space 360 mm2or less
Choose a capacitor to review
Series ZKU
Product number EEHZK1E331UP
Rated voltage 25V
Capacitance 330uF
Size ø8x10.2 mm
Number of capacitors (estimate) 3
Present product design
Series ZC
Capacitance 25V
Capacitance 330uF
Size φ10x10.2
Ripple current 2 Arms
ESR 20 mΩ
Number of components 3
Space 360 mm2
Target performance
Total capacitance 1000uF
Size φ10 or less
Total ripple current 6 Arms
Total ESR 6.7 mΩ
Number of components 1～2
Space 240 mm2
Choose a capacitor to review
Series ZKU
Product number EEHZK1E331UP
Rated voltage 25V
Capacitance 330uF
Size ø8x10.2 mm
Number of capacitors (estimate) 3
STEP❸ Examining the capacitor
Capacitor
Series		 Mounting area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)		 Space
saving		 Output
voltage
Stability
ZC
25V330uF
ø10x10.2mm
 		 224mV - 234mV - - -
ZKU
(EEHZK1E331UP)
25V 330uF
ø8x10.2mm

-25%

 222mV Equal to the
conventional
type		 230mV Equal to the
conventional
type		 〇 〇
Capacitor Series Mounting
area
Reduction
effects		 Rising 1 A → 10 A
(spec:△V=600mV)		 Falling 10 A → 1 A
(spec:△V=600mV)
ZC
 		 224mV - 234mV -
ZKU
(EEHZK1E331UP)

-25%

 222mV Equal to the
conventional
type		 230mV Equal to the
conventional
type
Capacitor Series Space
saving		 Output
voltage
Stability
ZC
 - -
ZKU
(EEHZK1E331UP) 		〇 〇
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Replacing the current capacitor with a smaller capacitor in size is possible.
STEP❹ Propose an optimum capacitor
Product numberRated voltage
(V)		Capacitance
(µF)		Rated ripple current
(Arms)		Product dimensions
(mm)		Durability
EEHZK1E331UP253302
(125℃/100kHz)		Φ8×10.2125°C/4000h
EEHZK1E331UV
(Vibration-resistant product)		253304
(125℃/100kHz)		Φ8×10.2125°C/4000h