Cypress CY8C29x66, AN2309, CY8C24794 specifications BAT2

AN2309

Figure 4. Two-Cell Battery Charger Schematic – CPU, Cell Balancing, and Measuring Equipment

Q1

IRLML6402

POWER+
										C1	R1
										0.01uF	10K
				R4	1K
DRIVE										Q2
										BC817
							C4
										R5
							0.1uF			15K
				U1				VCC
						Vcc	28
Vi2			1	P0[7]		P0[6]	27			Vi1
	TP1		2				26
				P0[5]		P0[4]				Tbat
Vref			3				25	V2
				P0[3]		P0[2]
		V1	4				24	BAT_GND
				P0[1]		P0[0]
			5	P2[7]		P2[6]	23
			6				22
				P2[5]		P2[4]
			7				21			LED_YELLOW
				P2[3]		P2[2]
			8				20
				P2[1]		P2[0]				LED_GREEN
			9	SMP		Xres	19			XRES
			10	P1[7]		P1[6]	18
BAL1			11				17			DRIVE
				P1[5]		P1[4]
			12				16
BAL2				P1[3]		P1[2]				LOAD_EN
			13				15
				P1[1]		P1[0]
			14	Vss
				CY 8C24423A
J2		VCC
1
2
3						XRES
4		TX
5		CALIBRATION
ISSP/DEBUG							Vref
								R15		R16
								1M 1%		1M 1%
		Vi2
								C8	0.1u
		Vi1
								R20		R21
								200K 1%		200K 1%
								R23

POWER- 100mOh 1%

V2

BAL2

V1

BAT_GND

		D1
		BAT+
+ C2	C3	MBR360
47uF
	1uF CER

	R7	150K 0.1%
C5	R6
0.01u
	50K 0.1%		R8
			1M
	Vbias
			Q4
			IRLML6402
	R9
			Q3
			BC817
	330R	R10	R11
		10K	100
					J1
				BAT2	1
	R13 150K 0.1%				2
				BAT1	3
				GND	4
C6	R12			TERMO	5
0.01u			R14
	50K 0.1%				BAT_CON
			100
	Vbias
			Q5
	BAL1		IRLML2502
			R17
			1M
	R18 150K 0.1%
C7	R19		R22
0.01u
	50K 0.1%		Tbat
	Vbias		10K	R24
				10K 1%
				Vref

November 25, 2007 Document No. 001-17394 Rev. *B - 7 -

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