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參數(shù)資料
| 型號： | PQ60240HZA25NNF-G |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 600 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, HALF BRICK PACKAGE-10 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大?。?/td> | 2078K |
| 代理商： | PQ60240HZA25NNF-G |
Product # PQ60240HZx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005987 Rev. 1
12/02/10
Page 13
Technical
Specification
PQ60240HZx25
Applications Section
Share Accuracy: Inside each converter micro-controller, the
duty cycle is generated digitally, making for excellent duty cycle
matching between connected units. Some small duty cycle
mismatch is caused by (well controlled) process variations in the
MOSFET gate drivers. However, the voltage difference induced
by this duty cycle mismatch appears across the impedance of
the entire power converter, from input to output, multiplied by
two, since the differential current flows out of one converter and
into another. So, a small duty cycle mismatch yields very small
differential currents, which remain small even when 100 units are
placed in parallel.
In other current-sharing schemes, it is common to have a current-
sharing control loop in each unit. However, due to the limited
bandwidth of this loop, units do not necessarily share current
on startup or during transients before this loop has a chance to
respond. In contrast, the current-sharing scheme used in this
product has no control dynamics: control signals are transmitted
fast enough that the slave units can mirror the control state of
the master unit on a cycle-by-cycle basis, and the current simply
shares properly, from the first switching cycle to the last.
Vin(+)
Vin(-)
Vout(+)
Vout(-)
Share (+)
Share (-)
On/Off
Sense (+)
Sense (-)
Trim
Vin(+)
Vin(-)
Vout(+)
Vout(-)
Share (+)
Share (-)
On/Off
Sense (+)
Sense (-)
Trim
Vin(+)
Vin(-)
Vout(+)
Vout(-)
Share (+)
Share (-)
On/Off
Sense (+)
Sense (-)
Trim
Load
>470nH
>10F
Up to 100 Units
Electrolytic
Capacitor
Electrolytic
Capacitor
Electrolytic
Capacitor
Figure G: Typical application circuit for parallelling of full-featured units
advanced
publication
advanced
publication
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